Senior Software Engineer (Frontend)

🏢 Summary: Mid Frontend Engineer role focused on building interactive, high-performance frontend applications for a browser-based 3D design platform. The position involves developing scalable React and TypeScript solutions, integrating with backend services, and contributing to CAD-like user experiences in a collaborative engineering environment. Hybrid work model in Warsaw with full-time employment via Employer of Record. 🗂️ Requirements: 3+ years of commercial software engineering experience, JavaScript, TypeScript, React, Experience building component-based frontend applications, Experience integrating frontend applications with backend APIs, Understanding of testing, maintainable code, and code reviews, Ability to own features from design to production, Familiarity with backend systems, English B2+/C1, Strong communication and collaboration skills 📃 Skills: JavaScript, TypeScript, React, GraphQL, three.js, PostgreSQL, Ruby, Rails, Python, Playwright, CAD 🏢 Description: Salary: 18,500–21,700 PLN gross/month Location: Warsaw, Poland (Hybrid – 2 days/week in the office) Employment: Full-time Contract: Employment contract via Employer of Record We're looking for a Mid 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. You'll join a collaborative engineering team building intuitive, high-performance user experiences for a technically complex product, while working closely with Product, Design, and Backend Engineering teams. Requirements - Minimum 3 years of commercial software engineering experience - Strong experience with JavaScript, TypeScript, and React - Experience building modern component-based frontend applications - Experience integrating frontend applications with backend APIs - Understanding of software engineering best practices, including testing, maintainable code, and code reviews - Ability to own features from technical design through implementation and production - Familiarity with backend systems and willingness to contribute beyond the frontend when needed - Strong communication and collaboration skills - Professional proficiency in English (B2+/C1) Nice to Have - Experience with Ruby on Rails or Python - GraphQL in production - three.js or another 3D graphics library - Experience with Playwright or similar automated testing frameworks - Experience working in hybrid or distributed engineering teams - Exposure to CAD or graphics-intensive applications Responsibilities - Build modern, scalable frontend applications using React, TypeScript, and JavaScript - Deliver intuitive user experiences for a complex web platform - Own features end-to-end, from technical design through implementation, testing, deployment, and production support - Collaborate closely with Product Managers, Designers, and Engineers to deliver impactful product features - Integrate frontend applications with backend services and APIs - Write clean, maintainable, and well-tested code - Participate in code reviews, technical discussions, and architecture improvements - Help improve frontend engineering practices, tooling, and application reliability - Contribute to backend development when needed as part of a collaborative full-stack engineering environment

🏢 Summary: Senior Frontend Engineer role focused on leading development of a high-traffic web application for shipping management and rate comparison. The position involves end-to-end frontend ownership, from translating designs into production-ready interfaces to optimizing performance and accessibility. You will shape architecture decisions and maintain standards within a React/TypeScript monorepo environment. 🗂️ Requirements: 8+ years of production frontend development experience, 3+ years in senior role within scale-up or start-up environment, Deep expertise in React and TypeScript, Strong knowledge of state management and component architecture, Proficiency in HTML semantics and modern CSS, Experience with web performance optimization and Core Web Vitals, Practical expertise in WCAG 2.2 AA accessibility standards, Experience with unit, integration, and end-to-end testing, Experience working with monorepos, Ability to contribute to frontend and API architecture decisions 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, Grid, Flexbox, WCAG, CoreWebVitals, Testing, Monorepo, API, AWS, Snowflake, Figma 🏢 Description: Senior Frontend Engineer Our Client is an ambitious tech company on a mission to create a frictionless shipping experience for SMEs. They wrap real-time pricing, comparison, booking, and tracking into a clean and unified interface, replacing outdated logistics processes with a seamless digital platform. Role We are looking for an experienced Senior Frontend Engineer to play a central role in shaping a web app where thousands of customers every week sign up, compare rates, manage integrations, and book shipments. You will work end-to-end—from understanding customer problems to shipping production code—while leading frontend work on a core value team (Customer Experience, Marketplace, or SaaS). Responsibilities Plan and lead frontend development within your value team, collaborating closely with PMs, designers, and backend engineers. Translate designs into production user interfaces that are accessible, performant, well-tested, and consistent with the rest of the product. Build prototypes to put working code in front of customers when validating product ideas. Own web performance on the surfaces you touch, ensuring excellent Core Web Vitals to boost conversion rates. Champion accessibility across the platform (WCAG 2.2 AA is the baseline). Contribute to architecture decisions that cross the frontend/backend line, including API boundaries and real-time updates. Maintain shared standards across a React/TypeScript monorepo through code reviews and technical councils. Mentor junior engineers and contribute to the evolution of the company's design system. Key competences 8+ years of experience writing production frontend code, with the last 3+ at a senior level in a scale-up/start-up environment. Deep React and TypeScript experience, with strong opinions on state management and component architecture. Solid web fundamentals: HTML semantics, modern CSS (Grid, Flexbox, container queries), browser rendering pipelines, and the network layer. Accessibility expertise as a practitioner skill, capable of spotting WCAG issues during design reviews. Fluency in web performance, measuring and optimizing Core Web Vitals on real products. High testing maturity (unit, integration, and end-to-end tests). Excellent written and spoken English communication skills. Bonus points for: Experience with large-scale monorepos, background in logistics/marketplaces/B2B SaaS, contributing to design systems, embedding AI-assisted features, or a working knowledge of Go. Salary and Conditions Salary up to 7000 Euro per month 100% remote from Poland B2B contract signed directly with our Client Start ASAP Benefits Work with a modern tech stack (React, TypeScript, AWS, Snowflake, Figma, Claude Code, etc.) A curious, collaborative, low-ego culture within a Great Place to Work certified environment

🏢 Summary: Remote B2B contract role for a Senior Frontend Engineer to own and scale web and mobile experiences, including an AI-driven chat interface and complex health data UIs. The position focuses on building high-performance, production-grade applications using modern frontend technologies while collaborating closely with product and design. Candidates will drive frontend architecture, performance, and feature ownership in a fast-moving AI health tech environment. 🗂️ Requirements: 5+ years experience with React and TypeScript, Experience building production-level applications with real users, Strong frontend architecture and UI system design skills, Experience with web and mobile development, Ability to own features end-to-end, Experience with backend integration, Willingness to work weekends, Ability to work in fast-paced, ambiguous environment 📃 Skills: React, ReactNative, TypeScript, JavaScript, HTML, CSS, AI, Frontend, Mobile, Web 🏢 Description: Senior Frontend Engineer Location: Remote Europe or Poland preferred Type: B2B contract Compensation: 200,000 to 260,000 PLN base yearly plus up to 140,000.00 PLN vested over 4 years in Equity. Equity: Open to discussion About us We are building the intelligence layer for pet health. Our goal is to transform how pet owners and veterinarians understand, monitor, and act on health data. We combine AI, diagnostics, and longitudinal data to create a system that does not exist today. We are early, fast moving, and already working with real partners and data. What you will do Own the frontend across web and mobile experiences Build a fast, intuitive AI chat interface used daily by pet owners and vets Design and implement complex UI systems for health data, reports, and recommendations Work closely with product and design to ship quickly and iterate constantly Drive performance, responsiveness, and reliability at scale Help define the product, not just implement it What we are looking for Strong experience with React and TypeScript, 5+ Years Experience building production level apps with real users Eye for design and product quality Comfortable working in ambiguity and moving fast Ability to own features end to end Experience with Backend Willing to work weekends Bonus if you have worked on AI products, data heavy UIs, or health tech Tech stack React, React Native TypeScript Modern frontend tooling AI integrated workflows Why this role Working along some of the most famous engineers in AI like Soumith Chintala CTO of Thinking Machine Labs (Advisor) Direct impact on product, not just tickets Work on something genuinely new in AI and biology Fast iteration, real users, real data Equity Meaningful upside tied to company growth Early team member level ownership

🏢 Summary: Senior Front-end Developer role focused on designing and implementing complex user interfaces and single-page applications using modern frontend technologies. The position involves architecting scalable frontend solutions, optimizing performance, and integrating APIs in collaboration with backend and product teams. Hybrid work model with B2B contract in the banking sector. 🗂️ Requirements: Proficiency in HTML, Proficiency in CSS, Proficiency in JavaScript, Proficiency in TypeScript, Experience with Web Components, Experience with Lit, Strong knowledge of Node.js, Experience with npm, Familiarity with Vitest, Experience building single-page applications, Experience integrating REST APIs, Ability to optimize frontend performance 📃 Skills: HTML, CSS, JavaScript, TypeScript, WebComponents, Lit, Nodejs, npm, Vitest 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw, Łódź or Tricity - 3 days a week in the office Rate: up to 150 PLN/h (B2B contract) Introduction & Summary We are seeking a highly skilled Senior Front-end Developer proficient in modern frontend technologies to design and implement complex user interfaces. The ideal candidate should possess extensive experience with HTML, CSS, JavaScript, and TypeScript , alongside capabilities in Web Components. Exceptional collaboration skills are essential as the role involves working closely with various teams to enhance product offerings. Main Responsibilities Architect and implement interactive user interfaces and single-page applications. Establish best practices for application architecture and component reusability. Audit and enhance frontend performance and load times. Collaborate with backend engineers and product teams to integrate APIs. Ensure optimal user experiences across multiple devices. Key Requirements Proficiency in HTML, CSS, JavaScript, TypeScript . Experience with Web Components / Lit . Strong background in Node.js / npm . Familiarity with Vitest . Nice to Have Knowledge of CICD . Experience with Kafka . Familiarity with NinjaFork . Understanding of MQ .

🏢 Summary: Senior Frontend Engineer role focused on building and enhancing scalable web applications for a global e-commerce platform. The position involves designing high-quality, responsive user interfaces, optimizing performance, and contributing to frontend architecture using modern React and TypeScript ecosystems. You will collaborate with cross-functional teams to deliver robust, reusable, and maintainable frontend solutions. 🗂️ Requirements: Degree in Computer Science or equivalent experience, 4+ years of software engineering experience, Commercial experience in building production web applications, Strong proficiency in TypeScript including generics and strict mode, Expertise in React ecosystem including React 19 and React Router, Experience with modern bundlers, Experience with micro-frontend architecture and Module Federation, Experience with state management libraries, Experience with data-fetching libraries, Experience with unit and E2E testing, Experience publishing internal packages and Semantic Versioning, Experience with CI/CD pipelines and release workflows, Understanding of cloud computing principles, Experience with SQL and relational databases, Knowledge of API design and distributed applications 📃 Skills: JavaScript, TypeScript, React, ReactRouter, Rsbuild, Webpack, Vite, ModuleFederation, Zustand, TanStackQuery, RxJS, HeroUI, Tailwind, Jest, TestingLibrary, Playwright, Azure, Kubernetes, AzureDevOps, GitHubActions, Jenkins, SQL, MySQL, PostgreSQL 🏢 Description: Position: Senior Frontend Engineer Type of contract: COE (UoP) up to 22 700 PLN gross/month Working model: fully remote You can join our client and work on a modern digital platform designed to better connect shoppers and retailers within the global e-commerce ecosystem. The project focuses on building and enhancing scalable web applications and core services that power user interactions. You’ll collaborate closely with product and design teams to deliver intuitive, high-performance user experiences. The environment emphasizes innovation, usability, and continuous improvement of frontend architecture. Role summary: As a Senior Engineer, you will take ownership of designing and developing responsive, high-quality user interfaces while collaborating with cross-functional teams. The role involves translating UI/UX designs into functional applications, improving performance, and ensuring consistency through reusable components. You’ll also contribute to code quality through reviews and support architectural decisions. The position requires strong expertise in modern frontend technologies, especially React and TypeScript, along with experience in scalable application development. Responsibilities: Design and develop modern, responsive user interfaces Collaborate with designers, backend engineers, and DevOps teams Review code and maintain high engineering standards Build reusable UI components and optimize performance Ensure cross-browser compatibility and accessibility Key requirements: Degree in Computer Science (or equivalent experience) 4+ years of experience in software engineering Hands-on experience in writing production code for web applications; Practical knowledge in front-end technologies such as JavaScript, TypeScript, CSS, HTML, with strong proficiency in TypeScript (generics, type-safe APIs, strict mode); Expertise in the React ecosystem including React 19, React Router, modern bundlers (Rsbuild/Webpack/Vite), and micro-frontend architectures (Module Federation); Experience with state management and data-fetching libraries such as Zustand, TanStack React Query, and reactive patterns with RxJS; Familiarity with modern component libraries and styling toolchains-  HeroUI, Tailwind CSS, design-token-driven theming; Experience with unit and E2E testing frameworks such as Jest, Testing Library, and Playwright; Experience working with internal packages and publishing them to a private registry and Semantic Versioning; Familiarity with CI/CD pipelines and release workflows- Azure DevOps, GitHub Actions, or Jenkins- including PR validation, artifact promotion, and multi-environment deploys; An understanding of cloud computing principles and practices; experience with production applications in cloud environments. Azure and Kubernetes experience is preferred; Knowledge in key programming concepts like memory management, optimization techniques, API design, relational mapping frameworks, and distributed applications; An understanding of database concepts and experience writing SQL in a relational database such as MySQL or PostgreSQL; Familiarity with monitoring and logging solutions; Self-starter who can move projects forward by filling in the gaps on Agile teams, from delivering complete, well-defined functionalities with high quality standards, through reviewing other Engineers’ code to contributing to design sessions. Offer: COE, up to 22 700 PLN gross per month Private healthcare, life insurance, sports card, and lunch subsidy Learning and development support (including tuition assistance) Employee Assistance Program Remote or hybrid work model supporting work–life balance Opportunity to collaborate with experienced engineers on global-scale e-commerce solutions

🏢 Summary: Senior Frontend Engineer role focused on building and enhancing scalable web applications for a global e-commerce platform. The position involves designing responsive user interfaces, optimizing performance, and contributing to frontend architecture using modern technologies. You will collaborate with cross-functional teams to deliver high-quality, reusable, and accessible UI solutions. 🗂️ Requirements: Degree in Computer Science or equivalent experience, 4+ years of software engineering experience, Strong knowledge of JavaScript, TypeScript, HTML, CSS, Expertise in React ecosystem, Experience with state management libraries, Experience with testing frameworks, Experience with CI/CD pipelines, Experience with cloud environments, Understanding of APIs and distributed systems, Knowledge of SQL databases 📃 Skills: JavaScript, TypeScript, HTML, CSS, React, Zustand, ReactQuery, RxJS, Jest, Playwright, CI/CD, Azure, Kubernetes, SQL, APIs, Microfrontends, Routing, Bundlers 🏢 Description: Position: Senior Frontend Engineer Type of contract: COE (UoP) up to 22 700 PLB gross/month Working model: fully remote You can join our client and work on a modern digital platform designed to better connect shoppers and retailers within the global e-commerce ecosystem. The project focuses on building and enhancing scalable web applications and core services that power user interactions. You’ll collaborate closely with product and design teams to deliver intuitive, high-performance user experiences. The environment emphasizes innovation, usability, and continuous improvement of frontend architecture. Role summary: As a Senior Engineer, you will take ownership of designing and developing responsive, high-quality user interfaces while collaborating with cross-functional teams. The role involves translating UI/UX designs into functional applications, improving performance, and ensuring consistency through reusable components. You’ll also contribute to code quality through reviews and support architectural decisions. The position requires strong expertise in modern frontend technologies, especially React and TypeScript, along with experience in scalable application development. Responsibilities: Design and develop modern, responsive user interfaces Collaborate with designers, backend engineers, and DevOps teams Review code and maintain high engineering standards Build reusable UI components and optimize performance Ensure cross-browser compatibility and accessibility Key requirements: Degree in Computer Science (or equivalent experience) 4+ years of experience in software engineering Hands-on experience in writing production code for web applications; Practical knowledge in front-end technologies such as JavaScript, TypeScript, CSS, HTML, with strong proficiency in TypeScript (generics, type-safe APIs, strict mode); Expertise in the React ecosystem including React 19, React Router, modern bundlers (Rsbuild/Webpack/Vite), and micro-frontend architectures (Module Federation); Experience with state management and data-fetching libraries such as Zustand, TanStack React Query, and reactive patterns with RxJS; Familiarity with modern component libraries and styling toolchains-  HeroUI, Tailwind CSS, design-token-driven theming; Experience with unit and E2E testing frameworks such as Jest, Testing Library, and Playwright; Experience working with internal packages and publishing them to a private registry and Semantic Versioning; Familiarity with CI/CD pipelines and release workflows- Azure DevOps, GitHub Actions, or Jenkins- including PR validation, artifact promotion, and multi-environment deploys; An understanding of cloud computing principles and practices; experience with production applications in cloud environments. Azure and Kubernetes experience is preferred; Knowledge in key programming concepts like memory management, optimization techniques, API design, relational mapping frameworks, and distributed applications; An understanding of database concepts and experience writing SQL in a relational database such as MySQL or PostgreSQL; Familiarity with monitoring and logging solutions; Self-starter who can move projects forward by filling in the gaps on Agile teams, from delivering complete, well-defined functionalities with high quality standards, through reviewing other Engineers' code to contributing to design sessions. Offer: COE, up to 22 700 PLN gross per month Private healthcare, life insurance, sports card, and lunch subsidy Learning and development support (including tuition assistance) Employee Assistance Program Remote or hybrid work model supporting work–life balance Opportunity to collaborate with experienced engineers on global-scale e-commerce solutions

🏢 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 maintaining complex cloud-based web applications for network configuration, monitoring, and optimization. The position involves developing new features, maintaining a custom UI component library, and contributing to code and UX reviews within a global team. Hybrid work model with long-term B2B cooperation. 🗂️ Requirements: 5+ years experience building complex web applications, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of HTML5, Strong knowledge of CSS3, Experience with React, Experience with Redux, Experience with Redux Toolkit, Experience writing well-tested maintainable code, Experience with REST API integration, Proficient English communication skills 📃 Skills: JavaScript, TypeScript, HTML5, CSS3, React, Redux, ReduxToolkit, REST, Cypress, ReactTestingLibrary, Webpack, Lerna, Storybook, Cytoscape, ChartJS, MapLibre 🏢 Description: For a client, we are looking for a Senior Frontend Developer Salary: 150-170 net+VAT B2B Hybrid model: 1 day per week from the office in Warsaw or Kraków RESPONSIBILITIES About our Team As a team member, you will have the possibility to participate in the whole development process in Network Cloud Team projects. The primary objective of our applications is to set up, configure, monitor, and optimize servers and networks for clients globally. Working in our team allows you to learn various network automation techniques, be part of and create a mobile network future, develop cloud-based applications and have a real impact on how it will look like. Role and Responsibilities Develop new features, as well as maintain existing ones. Implementation and maintenance of custom UI components library. Participate in code review, as well as UX design review. Cooperation with colleagues from other Centers around the world. REQUIREMENTS 5+ years of experience building complex web applications using JavaScript, TypeScript, HTML5, CSS3. Experience with React, Redux and Redux Toolkit; Familiarity writing well-tested, maintainable code (knowledge of Cypress.io and React Testing Library is a plus). Familiarity with REST API integration Proficient English communication skills. NICE TO HAVE Experience with Webpack; Experience with Lerna or other mono-repo solutions; Experience with Storybook and component libraries development; Experience with data visualization (knowledge of Cytoscape.js, react-chartjs-2, maplibre or similar libraries is a plus); WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 150-170 PLN/hour Hybrid work from Warsaw or Cracow (1 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, life insurance, 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. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: Senior Front-End Engineer role focused on designing and implementing a micro-frontend architecture for a large-scale, real-time incident reporting platform. The position involves transforming monolithic systems into scalable microservices-based solutions and ensuring high performance, security, and maintainability. The engineer will collaborate with cross-functional teams to deliver secure, cloud-ready web applications. 🗂️ Requirements: University degree in Computer Science or related field, Minimum 5 years of front-end development experience, Advanced knowledge of JavaScript and TypeScript, Strong experience with Angular framework, Practical experience with SPA and micro-frontend architectures, Experience with .NET and C#, In-depth knowledge of HTML5 and Web Components, Knowledge of web application performance optimisation and scalability, Understanding of web application security principles, Familiarity with cloud environments and container platforms 📃 Skills: JavaScript, TypeScript, Angular, SPA, Microfrontends, .NET, C#, HTML5, WebComponents, APIs, OpenShift, Cloud, Docker, Microservices 🏢 Description: For one of our business partners, we are looking for Senior Front-End Engineer (Micro-Frontends) . You will be joining a strategic project for a European institution , located in Warsaw, linked to security and border control activities. The project aims to develop a new generation of systems capable of reporting and disseminating information on incidents in real time. The solution will implement the new requirements set out in the regulation recently adopted by the European Commission. As a Senior Front-End Engineer, you will participate in the definition, design and implementation of the new platform, working closely with multidisciplinary teams to build scalable, secure and high-performance solutions: Design and implement solutions based on micro-frontend architecture . Participate in the transformation of monolithic applications into architectures based on microservices and micro-frontends. Analyse, optimise and improve the performance, scalability and maintainability of applications. Apply security best practices from the design phase (Security by Design). Collaborate with business analysts in defining and validating functional requirements. Work closely with backend and frontend teams to ensure integrated and consistent solutions. Produce high-quality technical documentation. Carry out code reviews and contribute to the continuous improvement of development standards. Support the analysis and design of user interfaces (UI/UX) For this role, we are seeking experts in front-end software development with: A university degree in Computer Science, Computer Engineering, Telecommunications, Information Technology, Business Administration and Management, or related disciplines. A minimum of 5 years demonstrable professional experience in front-end development . Advanced knowledge of JavaScript and TypeScript . Solid experience with modern frameworks such as Angular . Practical experience with SPA and micro-frontend architectures . Experience in .NET with C# . In-depth knowledge of HTML5 , Web Components and standard browser APIs . Knowledge of performance optimisation, scalability and security in web applications. Familiarity with cloud environments and container platforms (experience with OpenShift will be an advantage). Offer: Contract: B2B signed with Shimi Rate 1400 PLN/MD net+VAT Type of work: 100% remote (except the 1st day) Full time job Benefits : Multisport card and private medical care

🏢 Summary: Full-time Senior Frontend Systems Engineer (AI Focused) role focused on building AI-supported frontend systems, reusable UI templates, and internal tools to improve scalability and reduce manual work. The position involves defining frontend standards, ensuring accessibility and performance, and collaborating with global teams to create maintainable, high-quality solutions. This is a hybrid role based in Wrocław with flexible hours and partial PST overlap. 🗂️ Requirements: Minimum 6 years of experience in frontend development, Strong knowledge of React, Experience with at least one additional framework: Vue, Angular, or Svelte, Experience building or maintaining component libraries or design systems, Strong knowledge of HTML5, Strong knowledge of CSS3, Experience with responsive design, Knowledge of accessibility standards (WCAG), Experience optimizing frontend performance, Experience using AI coding tools (e.g., Cursor, Claude, GitHub Copilot), Ability to review and improve AI-generated code for quality and security 📃 Skills: React, Vue, Angular, Svelte, HTML5, CSS3, WCAG, AI, Cursor, Claude, GitHubCopilot, Performance, Accessibility, ResponsiveDesign 🏢 Description: Please Note: Flexible working hours, overlap with PST a few times/week required Hybrid work model (2 days/week from the office in Wrocław) About us We are building the future of customer success with AI, from keeping customers to helping them grow. Our product uses AI to help companies take care of their customers. It supports the whole customer journey, from the first steps to long-term success. More than 2,000 companies trust our product to help customers learn, use features, connect with others, and succeed. About this role We are looking for a full-time Senior Frontend Systems Engineer (AI Focused) to join our Services team. You will report to the Manager of Solutions Engineering. This is a hybrid role based in Wroclaw, Poland. In this job, you will improve how we build frontend solutions for our services. This is not a typical feature development role. You will work with modern AI tools and create reusable UI systems and workflows. These will help our team work faster and more consistently. You will still write code, but you will also design shared systems and patterns that reduce manual work. This role is great for someone who likes building systems that other developers use. You will work closely with teams in the USA and India. This gives you a chance to help set global standards and solve complex technical problems. What you’ll do Build AI-supported frontend systems Create and maintain reusable UI templates and frontend tools used in many projects. Build internal tools that support AI in coding, testing, and documentation. Make sure AI-generated code is fast, accessible, and easy to maintain. Set rules and checks for AI-assisted development, like accessibility and responsive design. Reduce repeated manual work by creating reusable frontend patterns. Stay involved in complex UI work to make sure solutions are practical. Improve scalable customisation Find common frontend problems and turn them into automated solutions. Suggest better architecture to reduce custom work, like shared tools and extension points. Work with product engineers to improve scalability based on real project needs. Use data (like time spent and reuse frequency) to support your ideas. Set frontend standards Define and document best practices for frontend development. Ensure accessibility (WCAG), performance, and code quality are always maintained. Help other engineers learn advanced and responsible use of AI. Promote reusable systems instead of one-time solutions. What we’re looking for At least 6 years of experience building frontend systems with high-quality code. Strong knowledge of React and experience with another framework (Vue, Angular, or Svelte). Experience creating or maintaining shared component libraries or design systems. Strong skills in HTML5, CSS3, responsive design, accessibility, and performance. Experience using AI coding tools (like Cursor, Claude, or GitHub Copilot). Ability to check and improve AI-generated code for quality and security. Ability to work independently and collaborate well with teams. Why you’ll love it here We are a place where people work together, share ideas, and solve real problems. Our product keeps growing in customer success, product experience, and AI solutions. We grow together with our customers. Our culture is based on trust, support, and stability. People feel comfortable being themselves and connected to their work. As a Senior Frontend Systems Engineer, you will work with international teams in the USA and India. This gives you a chance to share knowledge, influence global standards, and solve complex technical challenges.