Senior Front-end Developer

🏢 Summary: The offer is for a Senior Frontend Developer to design and build complex single-page applications using modern JavaScript and TypeScript technologies in a hybrid work model. The role focuses on frontend architecture, performance optimization, and integration with backend services in a cross-functional environment. 🗂️ Requirements: Strong experience with HTML, Strong experience with CSS, Strong experience with JavaScript, Strong experience with TypeScript, Experience building single-page applications, Experience with Web Components, Experience with Lit, Experience with Node.js and npm ecosystem, Experience with testing frameworks, Experience with Vitest, Experience integrating REST APIs, Experience integrating GraphQL APIs, Experience with state management, Experience optimizing frontend performance 📃 Skills: HTML, CSS, JavaScript, TypeScript, WebComponents, Lit, Node.js, npm, Vitest, REST, GraphQL, SPA, StateManagement, Performance 🏢 Description: As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Senior Frontend Developer Preferred location - Gdańsk, Gdynia, Warsaw. Hybrid setup required: 2 days/week in the office, 3 days per week starting September. Responsibilities: Design and implement complex, interactive user interfaces and single‑page applications using TypeScript and JavaScript Define and maintain frontend architecture, including best practices for state management and component reusability Analyze and optimize application performance, including load times and Core Web Vitals Collaborate with backend engineers, UX/UI designers, and product managers Integrate frontend applications with REST and GraphQL APIs Support delivery of product features in a cross‑functional environment Requirements: Strong experience with: HTML, CSS, JavaScript, TypeScript Hands‑on experience with: Web Components / Lit and Node.js / npm ecosystem Experience with testing frameworks, such as Vitest Nice to have: Experience with CI/CD processes Familiarity with Kafka Familiarity with NinjaFork Familiarity with message queue solutions (MQ) Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 Summary: Senior React Developer role focused on building and optimizing modern, scalable web applications using cutting-edge front-end technologies in a hybrid work model. The position involves collaborating with cross-functional teams, implementing micro front-end architectures, and ensuring high-quality code through modern testing practices. It offers the opportunity to drive innovation and continuously enhance technical expertise. 🗂️ Requirements: 5+ years of experience in front-end web development, Strong expertise in React, Strong expertise in TypeScript, Experience with testing frameworks (Jest, Cypress, or Playwright), Experience building responsive, scalable web applications, Familiarity with micro front-end architecture, Knowledge of reactive programming (RxJS), Experience with modern build tools, Experience working in Agile SDLC environments, Legal right to work in the European Union 📃 Skills: React, Angular, TypeScript, JavaScript, Jest, Cypress, Playwright, RxJS, Webpack, Vite, Vitest, SSR, CSS-in-JS, HTML, CSS 🏢 Description: Unleash the Future of Web Applications — Drive Innovation with Cutting-Edge Front-End Technologies! Warsaw-based opportunity with hybrid work model As a Senior Front-End Developer , you will be working for our client, a leader in web application innovation within the technology industry. You’ll contribute to building and executing challenging projects across a variety of initiatives, collaborating closely with stakeholders, UX designers, and development teams to transform requirements into high-impact deliverables. This role offers a unique chance to learn new technologies and continually elevate your skills while shaping the future of digital experiences. Your main responsibilities: Develop and maintain modern, dynamic web applications using React, Angular, and TypeScript. Collaborate with cross-functional teams to translate user requirements into clean, scalable code. Implement best practices in testing using Jest, Cypress, or Playwright to ensure quality and performance. Integrate micro front-end architectures and reactive programming techniques such as RxJS. Optimize applications for maximum speed, scalability, and responsiveness. Contribute to code reviews, documentation, and continuous improvement processes. Leverage modern build tools like Webpack and Vite to streamline development workflows. Stay updated on industry trends and introduce innovative solutions to technical challenges. You're ideal for this role if you have: 5+ years of hands-on experience in front-end web development. Strong expertise in React, Angular, TypeScript, and testing frameworks like Jest, Cypress, or Playwright. Proven ability to deliver rich, responsive web applications with clean code. Familiarity with micro front-end architectures and reactive programming, particularly RxJS. Experience working in agile SDLC environments, including research, design, and engineering phases. Excellent communication skills and ability to manage multiple projects simultaneously. Self-motivated, innovative mindset with strong organizational skills. It is a strong plus if you have: (optional) Bachelor's degree in Computer Science or related field. Experience with SSR, CSS-in-JS, Vite, Vitest, and Webpack. Knowledge of micro front-end development and advanced build pipelines. Language Required for the role: Fluent Polish and English Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: B2B contract role for a Senior Frontend Developer to architect and build advanced single-page applications in the banking domain. The position focuses on frontend architecture, performance optimization, and integration with backend services using modern web technologies. Hybrid work model with collaboration across cross-functional teams. 🗂️ Requirements: Strong experience with HTML, Strong experience with CSS, Strong experience with JavaScript, Strong experience with TypeScript, Hands-on experience with Web Components, Hands-on experience with Lit, Good knowledge of Node.js, Knowledge of npm ecosystem, Experience with Vitest or similar testing frameworks, Experience integrating REST APIs, Experience integrating GraphQL APIs 📃 Skills: HTML, CSS, JavaScript, TypeScript, WebComponents, Lit, Node.js, npm, Vitest, REST, GraphQL 🏢 Description: We are looking for a Senior Frontend Developer for our client in the banking industry RESPONSIBILITIES Architect and implement advanced user interfaces and single-page applications using TypeScript and JavaScript Define and promote best practices for frontend architecture, state management and reusable components Optimize application performance, including load times and Core Web Vitals, ensuring smooth user experience across devices Collaborate closely with backend developers, UX/UI designers, and product managers Integrate frontend applications with REST and GraphQL APIs Ensure code quality through testing and participation in development lifecycle processes REQUIREMENTS Strong experience with HTML, CSS, JavaScript, and TypeScript Hands-on experience with Web Components / Lit Good knowledge of Node.js and npm ecosystem Experience with testing frameworks such as Vitest NICE TO HAVE Experience with CI/CD pipelines Familiarity with Kafka Knowledge of NinjaFork Experience working with messaging systems (MQ) WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 110-120 PLN/hour Hybrid work from Warsaw / Łódź / Gdynia / Gdańsk (3 times a week in the office) The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client Events and integration meetings, as well as participation in various initiatives, e.g., sports Access to the benefits offering (medical care, Multisport card) WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch.

🏢 Summary: Senior Frontend Engineer role focused on building and evolving a browser-based 3D design platform for modeling real-world physical systems. The position involves owning frontend features end-to-end, contributing to frontend architecture, collaborating across teams, and occasionally working with backend systems in a hybrid Warsaw-based setup. 🗂️ Requirements: 5+ years building production user interfaces in JavaScript and TypeScript, React experience, Knowledge of component-based frontend architecture, Experience integrating frontends with backend services and APIs, Ability to own features end-to-end, Willingness to work with backend code, Knowledge of system design, testing, refactoring, and technical writing, CS degree or equivalent production software experience, Fluent written and spoken English 📃 Skills: TypeScript, JavaScript, React, GraphQL, three.js, PostgreSQL, Ruby, Rails, Python, Playwright, Git, CAD 🏢 Description: 💰 Salary: 24,000 - 28,000 PLN/month 💻 Hybrid, Warsaw (2 Days/Week) 🕦 Full-time ☑️ Employment contract (UOP) via Employer of Record We're looking for a Senior Frontend Engineer for a software company whose platform lets professionals design real-world physical systems in an interactive, browser-based 3D environment. You'd join the team that owns the core of the product: the design surface where users model actual sites in a 3D canvas, backed by CAD tooling and a data model that keeps designs accurate to the physical world. Working stack: TypeScript, JavaScript, React, GraphQL, three.js, PostgreSQL, Ruby on Rails, and Python. A senior individual contributor role reporting into engineering leadership. You'll own features end-to-end, from technical design through to production support, and help steer the frontend architecture the team relies on. Requirements: 5+ years building production user interfaces in JavaScript and TypeScript React experience and a firm grasp of component-based frontend architecture Experience wiring frontends to backend services and APIs Comfort owning features end-to-end, from scoping through to production Willingness to step beyond the frontend when a feature calls for it, including reading and touching backend code (Ruby on Rails familiarity is a plus) Engineering fundamentals: system design, testing, refactoring, and clear technical writing A CS degree or an equivalent hands-on track record shipping production software Fluent in written and spoken English Nice to Have: GraphQL in production three.js or another 3D graphics library Ruby on Rails or Python Playwright or a comparable end-to-end testing framework Git in a collaborative, multi-engineer codebase Any exposure to CAD software Experience with distributed teams in a hybrid setup Key Responsibilities: Build and ship frontend experiences that make designing faster and more accurate Partner with Product, Design, and Engineering to scope, build, and release features Write clean, well-tested code and raise the bar through code reviews and technical discussions Strengthen reliability with automated tests and a share of the team's on-call rotation Contribute to shared frontend architecture, tooling, and technical standards Pick up backend work when it's needed to land the features you own Support a collaborative engineering culture through mentoring, planning, and cross-team work

🏢 Summary: Senior Frontend Developer role focused on building, maintaining, and optimizing scalable web applications using modern frontend technologies. The position involves designing web architecture, integrating APIs, and supporting CI/CD processes to deliver high-performance user experiences. The role requires strong experience in React-based ecosystems and modern DevOps practices. 🗂️ Requirements: Minimum 5 years of experience in modern frontend technologies, Strong experience with ReactJS and NextJS, Proficiency in HTML, CSS, TypeScript, and JavaScript, Experience designing scalable web architecture, Solid knowledge of REST APIs, Experience with NodeJS and package managers, Experience with CI/CD pipelines and GitHub workflows, Proficient in Git version control, Experience creating technical documentation (e.g., Confluence), English proficiency at B2 level or higher 📃 Skills: ReactJS, NextJS, HTML, CSS, TypeScript, JavaScript, REST, NodeJS, CI/CD, GitHub, Git, Confluence, Azure, GraphQL, HeadlessCMS 🏢 Description: We are seeking a highly skilled and motivated Senior Frontend Developer to join our team. The ideal candidate will have a strong background in front-end coding, troubleshooting, and optimizing web applications. You will play a key role in developing and maintaining high-quality, scalable, and performant web solutions using modern technologies. This position requires a proactive individual with excellent problem-solving skills and a passion for delivering exceptional user experiences. Must-Have Qualifications to be successful for the role: Technical Skills: Develop and maintain web applications using ReactJS / NextJS . Implement responsive designs using HTML, CSS, Typescript, and JavaScript . Create and maintain technical documentation using tools like Confluence. Design and implement scalable web architecture and artifacts. Solid knowledge of REST APIs . Experience with NodeJS and package managers. Utilize DevOps skills, including CI/CD pipelines , GitHub workflows , and actions . Manage version control using GIT effectively. Soft Skills: Strong problem-solving and troubleshooting abilities. Excellent communication and collaboration skills to work effectively in a team environment. Attention to detail and a proactive approach to identifying and resolving issues. Ability to adapt to new technologies and learn quickly. Experience: Minimum 5 years of experience in modern Frontend technologies. English proficiency should be at least B2 level. Nice-to-Have Qualifications: Experience with Azure or other cloud platforms. Experience with GraphQL. Experience with Headless CMS (Content Management System) . Optimize web performance, focusing on Core Web Vitals. Other Details: Work model: 2 days per week in the office and 3 days at home. We offer a flexible work schedule that includes 12 additional Compensation Days besides regular holidays. Note that specific work hours may vary between winter and summer schedules, and the candidate will be required to submit their CV in English.

🏢 Summary: Frontend Developer role focused on building and maintaining front-end applications that consume REST APIs in a hybrid work model. The position involves coding in line with application requirements, debugging, and enhancing existing solutions while collaborating within a development team. The role requires strong technical expertise in Angular and related technologies, along with effective communication in an international environment. 🗂️ Requirements: Experience with Angular Framework, Strong knowledge of TypeScript, Strong knowledge of JavaScript, Ability to consume and render data via REST APIs, Expertise in Hadoop, Expertise in MapReduce, Ability to reuse existing code in new applications, Fluent English 📃 Skills: Angular, TypeScript, JavaScript, REST, Hadoop, MapReduce, APIs 🏢 Description: General info: Model of work: hybrid (2-3 times per week work from office in Łódź) Type of contract: B2B contract Rate: 80 - 100 PLN net + vat/h Overview We are seeking a skilled Frontend Developer to design, create, and maintain front-end applications that effectively consume REST APIs. The ideal candidate must demonstrate strong communication skills and the ability to explain complex technical topics to non-technical audiences. This role involves ensuring that application code meets all requirements, along with debugging and enhancing application procedures. Main Responsibilities: Designing, creating, and maintaining front-end applications to consume REST APIs. Writing code in accordance with application requirements. Collaborating as part of a software development team to meet standards. Explaining complex technical concepts in clear language. Debugging applications to ensure functionality. Making suggestions for application enhancements and infrastructure improvements. Contributing to a positive work environment through effective teamwork. Key Requirements: Excellent communication skills to build trust with team members and stakeholders. Experience with Angular Framework. Strong knowledge of TypeScript and JavaScript. Ability to consume and render data via APIs. Capability to reuse existing code in new applications. Expertise in Hadoop and MapReduce. Fluent English is a must (daily communication in international environment) Nice to Have: Experience in similar financial institutions or environments. Knowledge of additional programming languages or frameworks. Understanding of DevOps practices.

🏢 Summary: Senior Frontend Developer role focused on building and leading high-performance frontend applications for self-serve advertising platforms in the AdTech domain. The project involves developing campaign management flows, pricing logic, and integrating programmatic components using modern JavaScript frameworks. Fully remote B2B contract for 6 months with possible extensions. 🗂️ Requirements: Proficiency in Nuxt (Vue 3), Strong TypeScript knowledge including Generics and Interfaces, Experience with Pinia state management, Knowledge of PrimeVue 4, Knowledge of Tailwind CSS, Familiarity with AJV or Zod validation libraries, Experience with dayjs and decimal.js, Experience with SSP/DSP or programmatic integrations, Experience with domain-driven architecture, Performance optimization skills 📃 Skills: Nuxt, Vue, TypeScript, Pinia, PrimeVue, Tailwind, AJV, Zod, dayjs, decimal.js, SSP, DSP, JavaScript, ESLint 🏢 Description: 🌍Work mode : remote. 💰 Rate: 140 -160 PLN/h on B2B. ⏰ Start : ASAP/ 1 msc. ⏳ Project length : 6 months + extensions. 📕Project language : English. ⚙️ Industry : AdTech. 💼 Workload : Full time. ⚙️ Recruitment process -1 technical interview. 💻 Equipment : work on own equipment. Summary: The role of the Senior Frontend Developer focuses on leading the development of high-performance frontend applications within the Ad-Tech domain , leveraging modern JavaScript frameworks . Main Responsibilities: Develop and maintain self-serve advertising platforms. Implement campaign management & booking flows. Actively contribute to pricing logic & financial calculations. Integrate SSP/DSP or programmatic components. Create and manage reporting & validation-heavy interfaces. Key Requirements: Proficient in Nuxt (Vue 3) . Strong command of TypeScript , including Generics and Interfaces. Experience with Pinia for state management. Knowledge of PrimeVue 4 and Tailwind CSS. Familiarity with AJV / Zod validation libraries. Skillful in dayjs & decimal.js . Experience with domain-driven architecture and performance optimization. Nice to Have: Experience with Nuxt Layers and modular architecture. Familiarity with the Mapper pattern (DTO → Domain). Experience with ESLint 9. Other Details: Work Environment: Remote position with significant flexibility in working hours. Industry: Engaging in a dynamic Ad-Tech landscape.

🏢 Summary: Full-time, 100% remote Senior Frontend Developer role focused on building and scaling complex, responsive web applications powered by AI-driven platforms. The position involves architecting high-quality front-end solutions, integrating with back-end services, and ensuring performance, scalability, and cross-browser compatibility. The role also includes driving best practices, code quality, and modern front-end standards within the team. 🗂️ Requirements: Strong knowledge of HTML5, CSS3, JavaScript (ES6), Strong understanding of DOM, Experience with React.js, Experience with Material UI, Experience with Responsive Design and cross-browser compatibility, Familiarity with SASS or LESS, Understanding of BEM methodology, Knowledge of CSS-in-JS, Knowledge of browser storage (cookies, localStorage, sessionStorage), Proficiency with npm or yarn, Experience with Jest or equivalent testing frameworks, Understanding of SEO best practices, Familiarity with TypeScript, Knowledge of SSR and service workers, Experience with Webpack, Vite, or Rollup, Understanding of browser extensions integration 📃 Skills: HTML5, CSS3, JavaScript, ES6, DOM, React, MaterialUI, SASS, LESS, BEM, CSS-in-JS, cookies, localStorage, sessionStorage, npm, yarn, Jest, TypeScript, SSR, Webpack, Vite, Rollup, SEO, ServiceWorkers 🏢 Description: Senior Frontend Developer (100% remote) 💰 Salary: 20,000-23,000 PLN/month 🌎 100% Remote 🕦 Full-time position ☑️ B2B or Contract of Employment We are looking for a Senior Frontend Developer for a partner client that helps businesses use artificial intelligence to run more efficiently and grow faster. The company builds and provides digital platforms and consulting services that enable organizations to manage operations, analyze data, and improve performance. Their solutions combine AI, automation, and deep business expertise to help clients simplify workflows, gain insights, and deliver greater value. Requirements: HTML5 , CSS3 , JavaScript (ES6) Strong understanding of the Document Object Model (DOM) Skilled in Responsive Design and cross-browser compatibility Experience with React.js and Material UI Familiarity with CSS preprocessors such as SASS or LESS Understanding of BEM methodology and CSS-in-JS approaches Knowledge of browser storage mechanisms (cookies, localStorage, sessionStorage) Proficient in using package managers (npm/yarn) Experience in unit testing using Jest or equivalent frameworks Understanding of SEO best practices Familiarity with TypeScript for type-safe, large-scale applications Knowledge of server-side rendering (SSR) and service workers Experience with code bundling and modern module bundlers (e.g., Webpack, Vite, Rollup) Understanding of browser extensions and their integration with web applications Responsibilities: Develop and maintain  complex, responsive user interfaces for large-scale web applications. Architect and integrate front-end components with back-end APIs and services , ensuring security, scalability, and performance. Drive the implementation of pixel-perfect UI/UX designs across browsers and devices. Provide technical mentorship to junior developers and guide the team in adopting modern best practices. Conduct code reviews , enforce standards, and maintain a clean, modular codebase. Evaluate and recommend new frameworks, tools, and libraries to enhance productivity. Manage project timelines, estimate development efforts, and collaborate effectively with cross-functional teams. Maintain comprehensive front-end documentation , design patterns, and style guides. Stay updated with industry trends , emerging technologies, and front-end innovations to continuously improve team capabilities. Participate in architectural discussions , ensuring long-term scalability and maintainability of the front-end ecosystem. Get to know DevsData We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com

🏢 Summary: Senior Frontend Developer role focused on building and optimizing high-performance, scalable user interfaces for high-frequency trading platforms in a hybrid Warszawa-based model. The position involves developing React-based solutions, enhancing trading infrastructure, and ensuring low-latency performance in financial systems. You will contribute to modern frontend workflows and collaborate on delivering robust, scalable digital trading solutions. 🗂️ Requirements: Minimum 4 years commercial frontend development experience, Strong proficiency in React JS, Strong proficiency in JavaScript, Strong proficiency in modern CSS, Experience with Jest testing framework, Experience with CI/CD processes, Working knowledge of GitLab, Understanding of design patterns, Understanding of programming best practices, Fluent English, Legal right to work in the European Union 📃 Skills: React, JavaScript, CSS, SCSS, Jest, GitLab, CI/CD, npm, Java, Python, Ag-Grid 🏢 Description: Empower scalable UI innovation — shape the future of high-frequency trading platforms! Location & Work Model Warszawa-based opportunity with hybrid work model. As a Senior Frontend Developer, you will be working for our client, a leader in systematic trading strategies within the financial industry. You will contribute to building and optimizing critical trading infrastructure across derivatives, FX, commodities, rates, and single stocks, helping to drive performance and scalability in digital trading solutions. Join us and be at the forefront of innovation and growth in financial technology. Your main responsibilities: Develop and optimize high-performance, scalable user interfaces using React JS (Hooks / Context API). Implement modern CSS techniques (CSS-in-JS / SCSS) to enhance user experiences. Collaborate with cross-functional teams to deliver seamless frontend solutions. Write robust unit tests with Jest and contribute to code quality standards. Contribute to modern frontend workflows, including npm, CI/CD pipelines (GitLab). Support backend integration using Java or Python (exposure welcome). Participate actively in UI design discussions to align with UX principles. Maintain and improve existing systems, ensuring low latency and high-volume trading efficiency. You're ideal for this role if you have: Minimum 4 years of commercial frontend development experience. Strong proficiency in React JS, JavaScript, and modern CSS. Sound understanding of design patterns and best programming practices. Experience with Jest testing framework. Working knowledge of CI/CD processes and tools (GitLab). Basic backend knowledge in Java or Python is a plus. It is a strong plus if you have: (optional) Experience with Ag-Grid library. Knowledge of good UX principles. Certifications or additional training in frontend technologies. Language Required for the role: Fluent English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Frontend Developer role focused on building and optimizing high-performance, scalable user interfaces for high-frequency trading platforms in a hybrid model in Warsaw. The position involves developing React-based solutions, enhancing UI performance, and supporting integration with backend systems in a low-latency trading environment. 🗂️ Requirements: Minimum 4 years commercial frontend development experience, Strong proficiency in React JS, Strong proficiency in JavaScript, Strong proficiency in modern CSS, Experience with Jest testing framework, Experience with CI/CD tools (GitLab), Understanding of design patterns and best programming practices, Fluent English, Legal right to work in the EU 📃 Skills: React, JavaScript, CSS, SCSS, Jest, GitLab, CI/CD, npm, Java, Python, Ag-Grid 🏢 Description: Empower scalable UI innovation — shape the future of high-frequency trading platforms! Location & Work Model Warszawa-based opportunity with hybrid work model. As a Senior Frontend Developer, you will be working for our client, a leader in systematic trading strategies within the financial industry. You will contribute to building and optimizing critical trading infrastructure across derivatives, FX, commodities, rates, and single stocks, helping to drive performance and scalability in digital trading solutions. Join us and be at the forefront of innovation and growth in financial technology. Your main responsibilities: Develop and optimize high-performance, scalable user interfaces using React JS (Hooks / Context API). Implement modern CSS techniques (CSS-in-JS / SCSS) to enhance user experiences. Collaborate with cross-functional teams to deliver seamless frontend solutions. Write robust unit tests with Jest and contribute to code quality standards. Contribute to modern frontend workflows, including npm, CI/CD pipelines (GitLab). Support backend integration using Java or Python (exposure welcome). Participate actively in UI design discussions to align with UX principles. Maintain and improve existing systems, ensuring low latency and high-volume trading efficiency. You're ideal for this role if you have: Minimum 4 years of commercial frontend development experience. Strong proficiency in React JS, JavaScript, and modern CSS. Sound understanding of design patterns and best programming practices. Experience with Jest testing framework. Working knowledge of CI/CD processes and tools (GitLab). Basic backend knowledge in Java or Python is a plus. It is a strong plus if you have: (optional) Experience with Ag-Grid library. Knowledge of good UX principles. Certifications or additional training in frontend technologies. Language Required for the role: Fluent English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.