21.485 Ofertas de Senior Web Developer en Colombia

Overview
Connecting clients to markets – and talent to opportunity.
With 4,500+ employees and over 300,000 commercial, institutional, payments, and retail clients, we operate from more than 70 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors.

Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Responsibilities
Position Purpose:
We are looking for a Sr. Web Developer to join our Websites Development team. The Websites Development team is responsible for the client facing marketing websites. You will be working as part of a scrum team, focused on high quality deliverables to meet the business requirements for front end development. We need a developer who can help maintain legacy software, while working on migration to new system(s), being able to multitask and be flexible in the day to day tasks is a must.

Primary duties will include:

• You will work in a scrum team located in Kraków and New Jersey
• You will work closely with the marketing team to identify new enhancements to the site, and then see those enhancements through to completion; work on maintaining and improving our existing Marketing Websites.
• You will work closely with the design team to build out new modules, as well as update existing modules for use in new brands.
• We build our platform with quality in mind so you will work closely with QA to ensure that all changes are properly understood, testable, and automated where it is sensible.
• You will also work to ensure that the site components are performant against modern benchmarks such as Core Web Vitals.
• You will handle a change from start to finish and ensure the delivered solution is of high quality and in line with company development practices, troubleshooting complex issues and provide time sensitive solutions.
• Active role in the entire sprint process from estimation and design to feature rollout and you will work with and pair with other members of the team of all disciplines, BA, QA and other developers.
• You will be expected to maintain a high level of conduct, ethical standards and values as well as maintain an appropriate level of competence through ongoing training, making requests for updates or development as required.

Qualifications
To land this role you will need
:

• 5-7 years of web application development

• HTML5, JavaScript, React, TypeScript, CSS and one of preprocessors SCSS, SASS, LESS

• Working with REST WebAPIs
• Visual Studio
• Git (Bitbucket)
• TeamCity, Powershell

• JQuery - nice to have

• 1-3 years of .Net web application development - nice to have

What makes you stand out:

• You should have a good understanding of modern web development technologies, feature rich CMS systems, and supporting highly trafficked global websites.
• You should have a good understanding of modern browsers regarding their abilities and limitations, across desktop and mobile.
• Experience in an agile environment and Scrum methodologies.
• Basic understanding of security concepts like API authentication/authorization, encryption, windows certificates.
• Sitecore CMS experience, or experience with similar CMS.
• Strong verbal and written communication skills (English).

Education / Certification Requirements:

• Bachelor's degree or higher in Engineering (Computer Systems, Software, IT&T, Systems)

Working environment:

• Hybrid

Overview

Senior Web Developer

Axpo: Pioneering a Sustainable Future with Advanced Technology

Axpo isn't just another player in the energy sector. With a presence in over 30 countries, we are at the forefront of integrating technology into energy management and distribution. Our century-old roots in the energy sector have branched out into a future where digital innovation is key. Our mission is to revolutionize energy use and production, making sustainable practices the norm, and driving a brighter, greener future. The Challenge awaits: An ever evolving digital modeling platform. We are crafting a brand new modelling platform for traders, Risk Managers and Analysts to build model-driven business insights, risk indicators, valuations, optimisation and forecasts. Expect to navigate shifting specifications, make critical architectural decisions, and adapt to a world where UI and back-end processes evolve rapidly. Seek Senior React Engineers: Masters of Adaptability and Innovation.

Your role at Axpo goes beyond typical development. As a Senior React Engineer, you’ll be instrumental in constructing a responsive and adaptive UI, mastering dynamic component generation, real-time communication, and addressing the complexities of an ever-changing digital environment.

• Take a leading role in shaping User Interfaces and applications of our Trading and Risk modeling platform (models creation, models execution, models operations, Trading applications) running in the cloud.
• Elegant UI creation: Bring to life intricate and responsive UIs using advanced design patterns.
• Implement new features and migrate existing models and tools (internal frameworks, Excel interfaces) to the new framework.
• Expert in RxJs: Manage state with finesse, leveraging the power of RxJs and Context API.
• Adaptive development: Skillfully adjust to evolving project requirements for our Trading and Risk modeling platform running in the cloud.
• Real-time communication: Implement real-time data exchange between the backend and frontend.
• Testing expertise: Ensure robustness and reliability through comprehensive testing.
• DevOps savviness: Embrace principles of continuous integration and delivery for maximum efficiency.
• Bring in your own experience and views to build reliable and future-proof products.

• University degree in Computer Science or equivalent experience.
• Proven track record building Trading and Modelling tools in financial environments (Banks, Hedge Funds, Utilities).
• React experience (5-8 years): Demonstrable expertise in React development. State management with Context API.
• RxJs: Proficient with Reactive Programming and State Management using Reactive Extensions.
• Cloud DevOps CI/CD foundations: Ability to work in an environment with modern CI/CD tooling and principles.
• English proficiency for seamless collaboration in a global team.
• Excellent communication skills: Liaising directly with Business users, Product Owners, Developers and designers.
• Agile mindset: Familiar with Scrum or Kanban.
• State management with Redux or MobX is a plus.
• Previous backend experience is a plus.
• Testing/SDET background (Playwright, Cypress, Selenium) advantageous.

• Meaningful impact: Your work will significantly influence our digital landscape.
• Work from home: Hybrid model with up to 60% remote work.
• Professional growth: Commitment to personal and career development.
• Collaborative culture: Innovation, creativity, and collaboration are celebrated.
• Madrid-based: Join our vibrant team in the heart of Madrid.
• Work-life balance and social benefits: Health, life insurance, gym-pass, lunch vouchers, psychology service, and more.

Department IT / Technology | Role Permanent position | Location Madrid | Remote status Hybrid | Employment type Full-time

react, RxJs

Overview

Senior Web Developer

Axpo: Pioneering a Sustainable Future with Advanced Technology

Axpo isn't just another player in the energy sector. With a presence in over 30 countries, we are at the forefront of integrating technology into energy management and distribution. Our century-old roots in the energy sector have branched out into a future where digital innovation is key. Our mission is to revolutionize energy use and production, making sustainable practices the norm, and driving a brighter, greener future. The Challenge awaits: An ever evolving digital modeling platform. We are crafting a brand new modelling platform for traders, Risk Managers and Analysts to build model-driven business insights, risk indicators, valuations, optimisation and forecasts. Expect to navigate shifting specifications, make critical architectural decisions, and adapt to a world where UI and back-end processes evolve rapidly. Seek Senior React Engineers: Masters of Adaptability and Innovation.

Your role at Axpo goes beyond typical development. As a Senior React Engineer, you’ll be instrumental in constructing a responsive and adaptive UI, mastering dynamic component generation, real-time communication, and addressing the complexities of an ever-changing digital environment.

• Take a leading role in shaping User Interfaces and applications of our Trading and Risk modeling platform (models creation, models execution, models operations, Trading applications) running in the cloud.
• Elegant UI creation: Bring to life intricate and responsive UIs using advanced design patterns.
• Implement new features and migrate existing models and tools (internal frameworks, Excel interfaces) to the new framework.
• Expert in RxJs: Manage state with finesse, leveraging the power of RxJs and Context API.
• Adaptive development: Skillfully adjust to evolving project requirements for our Trading and Risk modeling platform running in the cloud.
• Real-time communication: Implement real-time data exchange between the backend and frontend.
• Testing expertise: Ensure robustness and reliability through comprehensive testing.
• DevOps savviness: Embrace principles of continuous integration and delivery for maximum efficiency.
• Bring in your own experience and views to build reliable and future-proof products.

• University degree in Computer Science or equivalent experience.
• Proven track record building Trading and Modelling tools in financial environments (Banks, Hedge Funds, Utilities).
• React experience (5-8 years): Demonstrable expertise in React development. State management with Context API.
• RxJs: Proficient with Reactive Programming and State Management using Reactive Extensions.
• Cloud DevOps CI/CD foundations: Ability to work in an environment with modern CI/CD tooling and principles.
• English proficiency for seamless collaboration in a global team.
• Excellent communication skills: Liaising directly with Business users, Product Owners, Developers and designers.
• Agile mindset: Familiar with Scrum or Kanban.
• State management with Redux or MobX is a plus.
• Previous backend experience is a plus.
• Testing/SDET background (Playwright, Cypress, Selenium) advantageous.

• Meaningful impact: Your work will significantly influence our digital landscape.
• Work from home: Hybrid model with up to 60% remote work.
• Professional growth: Commitment to personal and career development.
• Collaborative culture: Innovation, creativity, and collaboration are celebrated.
• Madrid-based: Join our vibrant team in the heart of Madrid.
• Work-life balance and social benefits: Health, life insurance, gym-pass, lunch vouchers, psychology service, and more.

Department IT / Technology | Role Permanent position | Location Madrid | Remote status Hybrid | Employment type Full-time

react, RxJs

Overview

Senior Web Developer

Axpo: Pioneering a Sustainable Future with Advanced Technology

Axpo isn't just another player in the energy sector. With a presence in over 30 countries, we are at the forefront of integrating technology into energy management and distribution. Our century-old roots in the energy sector have branched out into a future where digital innovation is key. Our mission is to revolutionize energy use and production, making sustainable practices the norm, and driving a brighter, greener future. The Challenge awaits: An ever evolving digital modeling platform. We are crafting a brand new modelling platform for traders, Risk Managers and Analysts to build model-driven business insights, risk indicators, valuations, optimisation and forecasts. Expect to navigate shifting specifications, make critical architectural decisions, and adapt to a world where UI and back-end processes evolve rapidly. Seek Senior React Engineers: Masters of Adaptability and Innovation.

Your role at Axpo goes beyond typical development. As a Senior React Engineer, you’ll be instrumental in constructing a responsive and adaptive UI, mastering dynamic component generation, real-time communication, and addressing the complexities of an ever-changing digital environment.

• Take a leading role in shaping User Interfaces and applications of our Trading and Risk modeling platform (models creation, models execution, models operations, Trading applications) running in the cloud.
• Elegant UI creation: Bring to life intricate and responsive UIs using advanced design patterns.
• Implement new features and migrate existing models and tools (internal frameworks, Excel interfaces) to the new framework.
• Expert in RxJs: Manage state with finesse, leveraging the power of RxJs and Context API.
• Adaptive development: Skillfully adjust to evolving project requirements for our Trading and Risk modeling platform running in the cloud.
• Real-time communication: Implement real-time data exchange between the backend and frontend.
• Testing expertise: Ensure robustness and reliability through comprehensive testing.
• DevOps savviness: Embrace principles of continuous integration and delivery for maximum efficiency.
• Bring in your own experience and views to build reliable and future-proof products.

• University degree in Computer Science or equivalent experience.
• Proven track record building Trading and Modelling tools in financial environments (Banks, Hedge Funds, Utilities).
• React experience (5-8 years): Demonstrable expertise in React development. State management with Context API.
• RxJs: Proficient with Reactive Programming and State Management using Reactive Extensions.
• Cloud DevOps CI/CD foundations: Ability to work in an environment with modern CI/CD tooling and principles.
• English proficiency for seamless collaboration in a global team.
• Excellent communication skills: Liaising directly with Business users, Product Owners, Developers and designers.
• Agile mindset: Familiar with Scrum or Kanban.
• State management with Redux or MobX is a plus.
• Previous backend experience is a plus.
• Testing/SDET background (Playwright, Cypress, Selenium) advantageous.

• Meaningful impact: Your work will significantly influence our digital landscape.
• Work from home: Hybrid model with up to 60% remote work.
• Professional growth: Commitment to personal and career development.
• Collaborative culture: Innovation, creativity, and collaboration are celebrated.
• Madrid-based: Join our vibrant team in the heart of Madrid.
• Work-life balance and social benefits: Health, life insurance, gym-pass, lunch vouchers, psychology service, and more.

Department IT / Technology | Role Permanent position | Location Madrid | Remote status Hybrid | Employment type Full-time

react, RxJs

Connecting clients to markets – and talent to opportunity. With 4,500+ employees and over 300,000 commercial, institutional, payments, and retail clients, we operate from more than 70 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors.

Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Position Purpose: We are looking for a Sr. Web Developer to join our Websites Development team. The Websites Development team is responsible for the client facing marketing websites. You will be working as part of a scrum team, focused on high quality deliverables to meet the business requirements for front end development. We need a developer who can help maintain legacy software, while working on migration to new system(s), being able to multitask and be flexible in the day to day tasks is a must.

• You will work in scrum teams located in Kraków, Bangalorem, London, and several citites across the United States
• You will work closely with the marketing team to identify new enhancements to the site, and then see those enhancements through to completion; maintain and improve our existing Marketing Websites
• You will work closely with the design team to build out new modules, as well as update existing modules for use in new brands.
• We build our platform with quality in mind so you will work closely with QA to ensure that all changes are properly understood, testable, and automated where it is sensible.
• You will also work to ensure that the site components are performant against modern benchmarks such as Core Web Vitals.
• You will handle a change from start to finish and ensure the delivered solution is of high quality and in line with company development practices, troubleshooting complex issues and provide time sensitive solutions.
• Active role in the entire sprint process from estimation and design to feature rollout and you will work with and pair with other members of the team of all disciplines, BA, QA and other developers.
• You will be expected to maintain a high level of conduct, ethical standards and values as well as maintain an appropriate level of competence through ongoing training, making requests for updates or development as required.

To land this role you will need:

• 5-7 years of experience in web application development.
• Strong proficiency in Next.js, React, and TypeScript.
• Expertise in HTML5, JavaScript (ES6+), CSS, and one of the following pre-processors: SCSS, SASS, LESS (CSS preprocessors).
• Experience working with Bootstrap or Tailwind CSS (Utility-first CSS framework).
• Experience working with RESTful APIs and third-party integrations.
• Proficiency with Git (Bitbucket or GitHub) and CI/CD workflows/actions.
• Experience with unit testing frameworks (e.g., Jest, React Testing Library).
• Familiarity with Storybook for UI component development.
• Experience working in a monorepo environment.
• Familiarity with build tools like Webpack, Vite, or Turborepo.
• Experience working in agile environment (Scrum, Kanban).
• Basic understanding of Core Web Vitals (LCP, FID, CLS), performance metrics, and how to improve them for better user experience.
• Basic understanding of accessibility standards (WCAG) and how to implement accessible web applications.
• Familiarity with headless CMSs (e.g., Kontent.AI).

• You should have a good understanding of modern web development technologies, feature rich CMS systems, and supporting highly trafficked global websites.
• You should have a good understanding of modern browsers regarding their abilities and limitations, across desktop and mobile.
• Experience in an agile environment and Scrum methodologies.
• Basic understanding of security concepts like API authentication/authorization, encryption, windows certificates.
• Sitecore CMS experience, or experience with similar CMS.
• Strong verbal and written communication skills (English).
• Experience woking with server-side rendering (SSR), static site generation (SSG), and Incremental Static Regeneration (ISR) use cases in Next.js.
• Knowledge of SEO best practices for modern web applications and how to implement SEO-friendly features (e.g. meta tags, structured data, schema, and SEO optimization for performance).
• Basic understanding of security concepts like API authentication/authorization, encryption, and Windows certificates.
• Familiarity with headless CMSs (e.g., Kontent.AI).

• Bachelor’s degree or higher in Engineering (Computer Systems, Software, IT&T, Systems)

• Hybrid

• Mid-Senior level

• Full-time

• Engineering and Information Technology

Overview

Connecting clients to markets – and talent to opportunity. With 4,500+ employees and over 300,000 commercial, institutional, payments, and retail clients, we operate from more than 70 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Position Purpose: We are looking for a Sr. Web Developer to join our Websites Development team. The Websites Development team is responsible for the client facing marketing websites. You will be working as part of a scrum team, focused on high quality deliverables to meet the business requirements for front end development. We need a developer who can help maintain legacy software, while working on migration to new system(s), being able to multitask and be flexible in the day to day tasks is a must.

Primary duties will include:

• You will work in a scrum teams located in Kraków, Bangalore, London, and several cities across the United States
• You will work closely with the marketing team to identify new enhancements to the site, and then see those enhancements through to completion;work on maintaining and improving our existing Marketing Websites .
• You will work closely with the design team to build out new modules, as well as update existing modules for use in new brands.
• We build our platform with quality in mind so you will work closely with QA to ensure that all changes are properly understood, testable, and automated where it is sensible.
• You will also work to ensure that the site components are performant against modern benchmarks such as Core Web Vitals.
• You will handle a change from start to finish and ensure the delivered solution is of high quality and in line with company development practices, troubleshooting complex issues and provide time sensitive solutions.
• Active role in the entire sprint process from estimation and design to feature rollout and you will work with and pair with other members of the team of all disciplines, BA, QA and other developers.
• You will be expected to maintain a high level of conduct, ethical standards and values as well as maintain an appropriate level of competence through ongoing training, making requests for updates or development as required.

To land this role you will need:

• 5-7 years of experience in web application development.
• Strong proficiency in Next.js , React , and TypeScript .
• Expertise in HTML5 , JavaScript (ES6+), CSS , and one of the following pre-processors: SCSS , SASS , LESS (CSS preprocessors).
• Experience working with Bootstrap or Tailwind CSS (Utility-first CSS framework).
• Experience working with RESTful APIs and third-party integrations.
• Proficiency with Git (Bitbucket or GitHub) and CI/CD workflows/actions.
• Experience with unit testing frameworks (e.g., Jest , React Testing Library ).
• Familiarity with Storybook for UI component development.
• Experience working in a monorepo environment.
• Familiarity with build tools like Webpack , Vite , or Turborepo .
• Experience working in agile environment (Scrum , Kanban ).
• Basic understanding of Core Web Vitals (LCP, FID, CLS), performance metrics, and how to improve them for better user experience.
• Basic understanding of accessibility standards (WCAG) and how to implement accessible web applications.

What makes you stand out:

• You should have a good understanding of modern web development technologies, feature rich CMS systems, and supporting highly trafficked global websites.
• You should have a good understanding of modern browsers regarding their abilities and limitations, across desktop and mobile.
• Experience in an agile environment and Scrum methodologies.
• Basic understanding of security concepts like API authentication/authorization, encryption, windows certificates.
• Sitecore CMS experience, or experience with similar CMS.
• Strong verbal and written communication skills (English).
• Experience woking with server-side rendering (SSR), static site generation (SSG), and Incremental Static Regeneration (ISR) use cases in Next.js.
• Knowledge of SEO best practices for modern web applications and how to implement SEO-friendly features (e.g. meta tags, structured data, schema, and SEO optimization for performance).
• Basic understanding of security concepts like API authentication/authorization, encryption, and Windows certificates.
• Familiarity with headless CMSs (e.g., Kontent.AI).

Education / Certification Requirements:

• Bachelor’s degree or higher in Engineering (Computer Systems, Software, IT&T, Systems)

Working environment:

• Hybrid

Overview

Connecting clients to markets – and talent to opportunity. With 4,500+ employees and over 300,000 commercial, institutional, payments, and retail clients, we operate from more than 70 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Position Purpose: We are looking for a Sr. Web Developer to join our Websites Development team. The Websites Development team is responsible for the client facing marketing websites. You will be working as part of a scrum team, focused on high quality deliverables to meet the business requirements for front end development. We need a developer who can help maintain legacy software, while working on migration to new system(s), being able to multitask and be flexible in the day to day tasks is a must.

Primary duties will include:

• You will work in a scrum teams located in Kraków, Bangalore, London, and several cities across the United States
• You will work closely with the marketing team to identify new enhancements to the site, and then see those enhancements through to completion;work on maintaining and improving our existing Marketing Websites .
• You will work closely with the design team to build out new modules, as well as update existing modules for use in new brands.
• We build our platform with quality in mind so you will work closely with QA to ensure that all changes are properly understood, testable, and automated where it is sensible.
• You will also work to ensure that the site components are performant against modern benchmarks such as Core Web Vitals.
• You will handle a change from start to finish and ensure the delivered solution is of high quality and in line with company development practices, troubleshooting complex issues and provide time sensitive solutions.
• Active role in the entire sprint process from estimation and design to feature rollout and you will work with and pair with other members of the team of all disciplines, BA, QA and other developers.
• You will be expected to maintain a high level of conduct, ethical standards and values as well as maintain an appropriate level of competence through ongoing training, making requests for updates or development as required.

To land this role you will need:

• 5-7 years of experience in web application development.
• Strong proficiency in Next.js , React , and TypeScript .
• Expertise in HTML5 , JavaScript (ES6+), CSS , and one of the following pre-processors: SCSS , SASS , LESS (CSS preprocessors).
• Experience working with Bootstrap or (Utility-first CSS framework).
• Experience working with RESTful APIs and third-party integrations.
• Proficiency with Git (Bitbucket or GitHub) and CI/CD workflows/actions.
• Experience with unit testing frameworks (e.g., Jest , React Testing Library ).
• Familiarity with Storybook for UI component development.
• Experience working in a monorepo environment.
• Familiarity with build tools like Webpack , Vite , or Turborepo .
• Experience working in agile environment (Scrum , Kanban ).
• Basic understanding of Core Web Vitals (LCP, FID, CLS), performance metrics, and how to improve them for better user experience.
• Basic understanding of accessibility standards (WCAG) and how to implement accessible web applications.

What makes you stand out:

• You should have a good understanding of modern web development technologies, feature rich CMS systems, and supporting highly trafficked global websites.
• You should have a good understanding of modern browsers regarding their abilities and limitations, across desktop and mobile.
• Experience in an agile environment and Scrum methodologies.
• Basic understanding of security concepts like API authentication/authorization, encryption, windows certificates.
• Sitecore CMS experience, or experience with similar CMS.
• Strong verbal and written communication skills (English).
• Experience woking with server-side rendering (SSR), static site generation (SSG), and Incremental Static Regeneration (ISR) use cases in Next.js.
• Knowledge of SEO best practices for modern web applications and how to implement SEO-friendly features (e.g. meta tags, structured data, schema, and SEO optimization for performance).
• Basic understanding of security concepts like API authentication/authorization, encryption, and Windows certificates.
• Familiarity with headless CMSs (e.g., Kontent.AI).

Education / Certification Requirements:

• Bachelor’s degree or higher in Engineering (Computer Systems, Software, IT&T, Systems)

Working environment:

• Hybrid

Overview

Connecting clients to markets – and talent to opportunity. With 4,500+ employees and over 300,000 commercial, institutional, payments, and retail clients, we operate from more than 70 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Position Purpose: We are looking for a Sr. Web Developer to join our Websites Development team. The Websites Development team is responsible for the client facing marketing websites. You will be working as part of a scrum team, focused on high quality deliverables to meet the business requirements for front end development. We need a developer who can help maintain legacy software, while working on migration to new system(s), being able to multitask and be flexible in the day to day tasks is a must.

Primary duties will include:

• You will work in a scrum teams located in Kraków, Bangalore, London, and several cities across the United States
• You will work closely with the marketing team to identify new enhancements to the site, and then see those enhancements through to completion;work on maintaining and improving our existing Marketing Websites .
• You will work closely with the design team to build out new modules, as well as update existing modules for use in new brands.
• We build our platform with quality in mind so you will work closely with QA to ensure that all changes are properly understood, testable, and automated where it is sensible.
• You will also work to ensure that the site components are performant against modern benchmarks such as Core Web Vitals.
• You will handle a change from start to finish and ensure the delivered solution is of high quality and in line with company development practices, troubleshooting complex issues and provide time sensitive solutions.
• Active role in the entire sprint process from estimation and design to feature rollout and you will work with and pair with other members of the team of all disciplines, BA, QA and other developers.
• You will be expected to maintain a high level of conduct, ethical standards and values as well as maintain an appropriate level of competence through ongoing training, making requests for updates or development as required.

To land this role you will need:

• 5-7 years of experience in web application development.
• Strong proficiency in Next.js , React , and TypeScript .
• Expertise in HTML5 , JavaScript (ES6+), CSS , and one of the following pre-processors: SCSS , SASS , LESS (CSS preprocessors).
• Experience working with Bootstrap or Tailwind CSS (Utility-first CSS framework).
• Experience working with RESTful APIs and third-party integrations.
• Proficiency with Git (Bitbucket or GitHub) and CI/CD workflows/actions.
• Experience with unit testing frameworks (e.g., Jest , React Testing Library ).
• Familiarity with Storybook for UI component development.
• Experience working in a monorepo environment.
• Familiarity with build tools like Webpack , Vite , or Turborepo .
• Experience working in agile environment ( Scrum , Kanban ).
• Basic understanding of Core Web Vitals (LCP, FID, CLS), performance metrics, and how to improve them for better user experience.
• Basic understanding of accessibility standards (WCAG) and how to implement accessible web applications.

What makes you stand out:

• You should have a good understanding of modern web development technologies, feature rich CMS systems, and supporting highly trafficked global websites.
• You should have a good understanding of modern browsers regarding their abilities and limitations, across desktop and mobile.
• Experience in an agile environment and Scrum methodologies.
• Basic understanding of security concepts like API authentication/authorization, encryption, windows certificates.
• Sitecore CMS experience, or experience with similar CMS.
• Strong verbal and written communication skills (English).
• Experience woking with server-side rendering (SSR), static site generation (SSG), and Incremental Static Regeneration (ISR) use cases in Next.js.
• Knowledge of SEO best practices for modern web applications and how to implement SEO-friendly features (e.g. meta tags, structured data, schema, and SEO optimization for performance).
• Basic understanding of security concepts like API authentication/authorization, encryption, and Windows certificates.
• Familiarity with headless CMSs (e.g., Kontent.AI).

Education / Certification Requirements:

• Bachelor’s degree or higher in Engineering (Computer Systems, Software, IT&T, Systems)

Working environment:

• Hybrid

Overview

Connecting clients to markets – and talent to opportunity. With 4,500+ employees and over 300,000 commercial, institutional, payments, and retail clients, we operate from more than 70 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Position Purpose: We are looking for a Sr. Web Developer to join our Websites Development team. The Websites Development team is responsible for the client facing marketing websites. You will be working as part of a scrum team, focused on high quality deliverables to meet the business requirements for front end development. We need a developer who can help maintain legacy software, while working on migration to new system(s), being able to multitask and be flexible in the day to day tasks is a must.

Primary duties will include:

• You will work in a scrum teams located in Kraków, Bangalore, London, and several cities across the United States
• You will work closely with the marketing team to identify new enhancements to the site, and then see those enhancements through to completion;work on maintaining and improving our existing Marketing Websites .
• You will work closely with the design team to build out new modules, as well as update existing modules for use in new brands.
• We build our platform with quality in mind so you will work closely with QA to ensure that all changes are properly understood, testable, and automated where it is sensible.
• You will also work to ensure that the site components are performant against modern benchmarks such as Core Web Vitals.
• You will handle a change from start to finish and ensure the delivered solution is of high quality and in line with company development practices, troubleshooting complex issues and provide time sensitive solutions.
• Active role in the entire sprint process from estimation and design to feature rollout and you will work with and pair with other members of the team of all disciplines, BA, QA and other developers.
• You will be expected to maintain a high level of conduct, ethical standards and values as well as maintain an appropriate level of competence through ongoing training, making requests for updates or development as required.

To land this role you will need:

• 5-7 years of experience in web application development.
• Strong proficiency in Next.js , React , and TypeScript .
• Expertise in HTML5 , JavaScript (ES6+), CSS , and one of the following pre-processors: SCSS , SASS , LESS (CSS preprocessors).
• Experience working with Bootstrap or Tailwind CSS (Utility-first CSS framework).
• Experience working with RESTful APIs and third-party integrations.
• Proficiency with Git (Bitbucket or GitHub) and CI/CD workflows/actions.
• Experience with unit testing frameworks (e.g., Jest , React Testing Library ).
• Familiarity with Storybook for UI component development.
• Experience working in a monorepo environment.
• Familiarity with build tools like Webpack , Vite , or Turborepo .
• Experience working in agile environment ( Scrum , Kanban ).
• Basic understanding of Core Web Vitals (LCP, FID, CLS), performance metrics, and how to improve them for better user experience.
• Basic understanding of accessibility standards (WCAG) and how to implement accessible web applications.

What makes you stand out:

• You should have a good understanding of modern web development technologies, feature rich CMS systems, and supporting highly trafficked global websites.
• You should have a good understanding of modern browsers regarding their abilities and limitations, across desktop and mobile.
• Experience in an agile environment and Scrum methodologies.
• Basic understanding of security concepts like API authentication/authorization, encryption, windows certificates.
• Sitecore CMS experience, or experience with similar CMS.
• Strong verbal and written communication skills (English).
• Experience woking with server-side rendering (SSR), static site generation (SSG), and Incremental Static Regeneration (ISR) use cases in Next.js.
• Knowledge of SEO best practices for modern web applications and how to implement SEO-friendly features (e.g. meta tags, structured data, schema, and SEO optimization for performance).
• Basic understanding of security concepts like API authentication/authorization, encryption, and Windows certificates.
• Familiarity with headless CMSs (e.g., Kontent.AI).

Education / Certification Requirements:

• Bachelor’s degree or higher in Engineering (Computer Systems, Software, IT&T, Systems)

Working environment:

• Hybrid