Mid Frontend Developer - B2B / SaaS

🏢 Summary: Development and optimization of the frontend layer in e-commerce and headless CMS projects, with focus on scalable interfaces and high-quality user experience. The role involves implementing technical improvements, writing unit tests, participating in code reviews, and collaborating with cross-functional teams to deliver measurable project goals. Fully remote B2B position with modern tech stack. 🗂️ Requirements: 2–4 years experience with React or Svelte, Very good knowledge of HTML, Very good knowledge of CSS, Very good knowledge of TypeScript or JavaScript, Experience building scalable interfaces, Ability to make technical decisions, Knowledge of Clean Code principles, Experience with code review, Experience writing unit tests, Experience with Git, Experience with Jira or similar tools, Knowledge of SEO principles, Knowledge of accessibility (a11y) standards, Ability to estimate and plan work 📃 Skills: React, Svelte, HTML, CSS, TypeScript, JavaScript, Git, Jira, Vite, Webpack, SEO, a11y, Builder.io, API, Headless, UnitTesting, E2E 🏢 Description: Monogo to firma technologiczna tworząca nowoczesne rozwiązania dla e-commerce oraz architektury headless. Pracujemy z międzynarodowymi markami, dostarczając skalowalne i dopracowane doświadczenia cyfrowe. Łączymy inżynierię z podejściem produktowym – zależy nam nie tylko na kodzie, ale na realnym wpływie na biznes naszych klientów. Aktualnie wzmacniamy zespół – szukamy osoby, która pomoże nam rozwijać i utrzymywać warstwę prezentacji aplikacji oraz usprawniać doświadczenia użytkowników końcowych. Twoja rola: rozwój i optymalizacja warstwy interfejsu w projektach e-commerce i headless CMS proponowanie i wdrażanie usprawnień technicznych udział w code review i dbanie o standardy jakości w tym pisanie testów jednostkowych współpraca z zespołem supportowym, backend, QA, BA, PM przy analizie i rozwiązywaniu problemów realizacja zadań w oparciu o cele projektowe i mierzalne wskaźniki dbanie o standardy i jakość projektu (code review, testy jednostkowe itp.) Wymagania: min. 2–4 lata doświadczenia w pracy z React lub Svelte bardzo dobra znajomość HTML, CSS, TypeScript/JavaScript doświadczenie w budowie skalowalnych interfejsów umiejętność podejmowania decyzji technicznych w obrębie realizowanych zadań znajomość dobrych praktyk (Clean Code, code review, testy) doświadczenie z Git oraz narzędziami typu Jira znajomość zasad SEO i dostępności (a11y) umiejętność estymacji i planowania pracy Mile widziane: znajomość narzędzi buildowych (Vite, Webpack) doświadczenie z testami (unit / e2e) praca z architekturą headless / API-first znajomość Builder.io Świadczenia Co oferujemy? elastyczną współpracę B2B wynagrodzenie: 10000 – 15 000 zł netto (w zależności od doświadczenia) pracę w pełni zdalną dostęp do nowoczesnego stacku technologicznego, w tym narzędzi AI pakiet dodatkowych świadczeń (opieka medyczna, ubezpieczenie, karta sportowa) udział w międzynarodowych projektach i realny wpływ na produkt Jak pracujemy? stawiamy na otwartą komunikację i współpracę cenimy inicjatywę i samodzielność działamy iteracyjnie i adaptujemy się do zmian bierzemy odpowiedzialność za to, co dowozimy Brzmi dobrze? Wyślij CV i sprawdźmy, czy to dobry kierunek – kolejnym krokiem będzie krótkie zadanie rekrutacyjne.

🏢 Summary: Long-term remote contract for an experienced React Developer to build and maintain key frontend systems in the retail domain, including e-commerce and event-driven cloud-based platforms on AWS. The role involves working across multiple products in a shared pool, developing modern UI solutions and real-time integrations within a monorepo and containerized environment. 🗂️ Requirements: Very good knowledge of TypeScript, Very good knowledge of React 18.x–19.x, Experience with react-router-dom, Experience with Tailwind CSS, Experience with Radix-UI, Experience with TanStack React Query, Experience with styled-components, Experience with axios, Experience with dnd-kit, Experience with Vite, Experience with NX, Experience with Docker, Experience with Design Systems, Experience with REST API integration, Experience with WebSocket or MQTT, Willingness to work with different frontend stacks and React versions 📃 Skills: TypeScript, React, react-router-dom, Tailwind, Radix-UI, TanStack, ReactQuery, styled-components, axios, dnd-kit, Vite, NX, Docker, REST, WebSocket, MQTT, AWS 🏢 Description: Dla naszego klienta z branży retail , dynamicznie rozwijającego się w czterech kluczowych pionach (E-commerce, Mobile, Aplikacje wspierające oraz Wsparcie biznesu), poszukujemy doświadczonego programisty React . Dołączysz do zespołu odpowiedzialnego za kluczowe systemy ( m.in . E-commerce, OMS, CRM) oraz innowacyjne rozwiązania, takie jak systemy zarządzania IoT. Jednym z Twoich pierwszych wyzwań będzie rozwój i utrzymanie projektów oraz wewnętrznej platformy opartej na architekturze sterowanej zdarzeniami (Event-Driven Architecture) i chmurze AWS. Model pracy: praca zdalna (warsztaty i transfer wiedzy w Łodzi ok. raz na kwartał) Czas trwania: współpraca długofalowa Start: lipiec 2026 Zakres obowiązków Rozwój i utrzymanie aplikacji frontendowych opartych o React i TypeScript Praca rotacyjna nad 5–6 produktami (shared pool) Rozwój kluczowych obszarów: Czytnik (React 19 + Tailwind), Nawigacja, Tech Radar, SWK‑UI Implementacja UI w oparciu o Design Systemy (Tailwind, Radix‑UI, Ant Design, MUI) Integracja z backendem przez REST API oraz komunikacja real‑time (WebSocket / MQTT) Praca w środowisku monorepo (NX) i konteneryzacji ( Docker ) Oczekiwania Bardzo dobra znajomość TypeScript i React (18.x–19.x) Doświadczenie z: react‑router‑dom, Tailwind CSS, Radix‑UI, TanStack React Query, styled‑components, axios, dnd‑kit, Vite, NX, Docker Gotowość do pracy z różnymi stackami frontendowymi i wersjami Reacta Doświadczenie w pracy z Design Systemami Komfort w pracy z aplikacjami real‑time (WebSocket / MQTT) Mile widziane: MUI X Data Grid, TipTap, Redux, Ant Design / Material‑UI Oferujemy Stałe wsparcie osobistego agenta , dbającego o Twoją ciągłość projektową, kontakt z klientem, niezbędne formalności, komfort pracy oraz rozwój, Consultant Development Program – doradztwo w planowaniu kariery w oparciu o najnowsze trendy i potrzeby rynku IT, obejmujące m.in . konsultacje z agentami i mentorami kariery , Dostęp do 7N Learning & Development – platformy rozwojowo-edukacyjnej z webinarami, biblioteką artykułów i raportów branżowych oraz regularnymi zaproszeniami na jednorazowe i cykliczne wydarzenia rozwojowe – techniczne, biznesowe oraz life-stylowe, Spektakularne eventy integracyjne , zarówno dla Ciebie (np. coroczny wyjazd Kick-Off , imprezy świąteczne czy sportowe Letnie Igrzyska), jak i dla Twoich bliskich (np. pikniki rodzinne, premiery filmowe), Rozwój zawodowy nie tylko podczas projektu – możesz zaangażować się w przekazywanie wiedzy innym w ramach oferty 7N Services kierowanej do klientów 7N, Relacje i dostęp do wiedzy najbardziej doświadczonych ekspertów IT na rynku – średni staż zawodowy naszego Konsultanta w Polsce to ponad 10 lat. Pakiet benefitów zaplanowany od A do Z , czyli dofinansowanie do opieki medycznej, ubezpieczenia na życie, karty sportowej dla Ciebie i Twoich bliskich, a także zniżki do sklepów w Polsce i za granicą

🏢 Summary: Senior Frontend Engineer role focused on building and scaling a modern fintech platform for managing corporate spending. The position involves leading development of React and TypeScript-based SPA applications, integrating with microservices and APIs, and driving performance and architectural improvements. You will collaborate cross-functionally while mentoring engineers and shaping scalable front-end solutions in a cloud-native environment. 🗂️ Requirements: 5+ years professional software engineering experience, Strong commercial experience with React, Strong expertise in TypeScript, Advanced knowledge of modern JavaScript (ES6+), Experience building large-scale SPA applications, Experience designing scalable front-end architectures, Experience working with APIs and microservices-based systems, Hands-on experience with front-end testing (unit, integration, e2e), Experience with CI/CD pipelines, Experience with AWS, Experience with Kubernetes, Professional English proficiency (min. B2), Fluent Polish, Residence in Poland 📃 Skills: React, TypeScript, JavaScript, ES6, SPA, REST, GraphQL, Microservices, CI/CD, AWS, Kubernetes, Testing, SSR 🏢 Description: Join a team building a modern fintech platform that helps businesses manage company spending more efficiently. The project focuses on developing a financial product that enables seamless integration of financial tools—including corporate cards, expense management, and invoice processing—directly with partner ecosystems such as banks, accounting platforms, and HR systems. The platform empowers companies to automate financial operations, simplify reconciliation processes, and gain full real-time visibility into their spending. Your tasks Lead initiatives focused on designing, building, and maintaining scalable front-end applications primarily using React and TypeScript Build modern, performant, and intuitive user interfaces for key areas of the fintech platform Collaborate closely with cross-functional teams across backend engineering, product, and design to deliver scalable product solutions Integrate front-end applications with microservices-based architectures and APIs (REST / GraphQL) Analyze application performance and implement optimizations to ensure high responsiveness, reliability, and scalability Participate in code reviews, architecture discussions, and post-mortems while mentoring other engineers Proactively address technical debt and guide the team through technical challenges, refactoring initiatives, and architectural migrations Requirements At least 5 years of professional software engineering experience, including strong commercial experience with React Strong expertise in TypeScript, modern JavaScript (ES6+), and building large-scale SPA applications Solid experience designing scalable front-end architectures using component-based and modular design principles Experience working with APIs and distributed systems in microservices-based environments Hands-on experience with front-end testing frameworks (unit, integration, e2e) and observability/monitoring tools Previous work with CI/CD pipelines, cloud environments such as AWS, and container orchestration platforms like Kubernetes Strong problem-solving skills, ownership mindset, and passion for mentoring and elevating engineering teams Professional English proficiency - minimum B2 Fluent in Polish required Residing in Poland required Nice-to-have requirements Previous experience in fintech or building financial products Understanding of payments, cards, expense management, or accounting-related domains Experience working in a scale-up environment Experience with GraphQL, SSR, performance optimization, or building design systems What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Full-time onsite Mid Frontend Developer role focused on building and maintaining modern web applications using React. The position involves translating Figma designs into pixel-perfect, responsive interfaces and integrating with REST/GraphQL APIs. You will collaborate with backend teams to deliver secure, high-performance frontend solutions. 🗂️ Requirements: Full-time onsite work in Warsaw (near Metro Plac Wilsona), 2–4 years commercial experience with React, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Very good knowledge of HTML5, Very good knowledge of CSS3, Practical experience with TailwindCSS, Experience with state management patterns, Understanding of frontend security basics, Experience testing React components, Familiarity with Git workflows, Basic knowledge of Docker, Ability to use AI tools in development, English level B2+ 📃 Skills: React, JavaScript, TypeScript, HTML5, CSS3, TailwindCSS, REST, GraphQL, Git, Docker, Figma, WCAG, Next.js, Storybook, CI/CD, i18n 🏢 Description: Warsaw (Onsite – near Metro Plac Wilsona)💼 B2B About Silk Software House Silk Software House is a Warsaw-based development company delivering high-quality fintech, e-commerce, and enterprise systems for long-term clients. We focus on clean architecture, pragmatic engineering, and software that performs well in production. Your Role As a Mid Frontend Developer, you’ll design and implement modern web applications using React. You’ll work closely with backend developers and designers, translate Figma designs into pixel-perfect UI, and help maintain and evolve existing products. Responsibilities Design and implement modern web applications using React Build responsive, pixel-perfect UI based on Figma designs Integrate frontend applications with REST / GraphQL APIs Implement authentication and authorization flows Maintain and optimize existing frontend codebases Diagnose performance and rendering issues Collaborate with system architects, backend developers, and other stakeholders Ensure code quality, performance, and maintainability Requirements This role requires full-time onsite work (no remote or hybrid options). Candidates must be willing and able to work from our office near the Plac Wilsona metro station 2–4 years of commercial experience with modern React Strong knowledge of JavaScript and TypeScript Very good understanding of HTML5 and CSS3 Practical experience with TailwindCSS Experience with common state management patterns Good understanding of frontend security basics Basic experience with testing React components Familiarity with Git and standard development workflows Basic understanding of Docker Ability to use AI tools as part of the development workflow English at B2+ level with good communication skills Nice to Have Internationalization ( i18n ) E2E tests CI/CD pipelines Accessibility standards ( WCAG ) Experience with Next.js Storybook Rates (B2B) 80–110 PLN / hour Recruitment Process Intro call (30 min) Technical interview or short task Final fit & project discussion Offer

🏢 Summary: Frontend Developer role focused on building and maintaining a long-term B2B platform using a modern React and TypeScript stack in a monorepo environment. The position involves implementing complex client-side logic, ensuring high test coverage (unit, integration, E2E), and close collaboration with backend developers. Work includes code reviews, pair programming, and developing scalable, well-tested frontend architecture. 🗂️ Requirements: 3+ years of commercial experience with TypeScript, 3+ years of commercial experience with React, Experience writing unit, integration, and E2E tests, Experience with Redux and Redux-Saga, Experience working with monorepo setup, English level B2 or higher 📃 Skills: TypeScript, React, Redux, Redux-Saga, Vite, Rush, pnpm, Vitest, Jest, Playwright, Nightwatch, React-Testing-Library, React-Hook-Form, Zod, MUI, React-Router, React-Intl, NodeJS, PHP, PostgreSQL, Linux, Docker 🏢 Description: About us: XIAG is a Swiss IT company that employs leading developers. The main strategy is partnership with business, not outsourcing: the company holds stakes in most projects. Among our projects are platforms for an airline, a Swiss bank, a B2B marketplace, a job search platform, and many other projects. Location: Mokotowska 9, 00-640 Warszawa TL;DR: monorepo rush + pnpm workspace, react, TypeScript, Vite, redux toolkit with typed-redux-saga, react-router, react-hook-form, zod, mui, react-intl testing with nightwatch, playwright, vitest long term project in B2B 25 years old, 50 employees main office in Switzerland, offices in Russia (Novosibirsk and Sochi), Poland and Vietnam Work process we work with the stack: typescript, react/redux/redux-saga, vitest/jest/react-testing-library, playwright, vite, rushjs, react-hook-form, zod etc. we work actively with backend developers so if you understand their tasks and instruments that will be a big advantage (php, nodejs, postgres; linux, docker) a lot of code, a lot of logic on client, that’s why we try to cover whole code with tests (unit, E2E, integration) we practice code review and pair programming, brainstorm with team we are writing quality code: work, tested, supported we appreciate initiative, new ideas, we like discussions among colleagues if you wish it’s possible to develop to: full stack, mobile What we offer: b2b or UoP via our partner CVT - ****what to choose it’s up to you hybrid schedule: 3 days from the office and 2 days from home work day starts at 08:00 (if it is too early for you we can move to 09:00) daily English practise direct and open communication with top managers, lack of bureaucracy yearly salary review daily exchange with colleagues work hardware from our side free English lessons 1 time per week compensation of professional education 75% compensation of sick leave 100% free lunches work-life balance: we don’t like overworking so spend your free time with your family 14 remote days per year Requirements: typescript, react - 3+ years writing tests English B2 and higher - communication with top managers and PMs in English only your advantage if you use actively AI Additional info We appreciate our team and create developing environment for each person. That’s why we take recruiting seriously: ask you to make test task without writing code from your side (or your examples of code are also possible), just quickly code review and after that we invite you for pair programming with our developers. Our developers want to be confident in their colleagues. Type me if you have any questions! Telegram: TatianaKolesnikova17

🏢 Summary: Development role focused on building and scaling a SaaS web application in the HR Tech / transactional systems domain, covering both backend and frontend. The position involves designing APIs, implementing business logic in Laravel, developing UI in Angular, and ensuring high performance and code quality. The role includes architectural decisions, database optimization, and close collaboration with UX/UI and development teams. 🗂️ Requirements: Minimum 2 years commercial experience (or strong junior level), Very good knowledge of Laravel and PHP 8+, Very good knowledge of Angular, Ability to build end-to-end solutions (backend + frontend), Strong knowledge of OOP, SOLID, design patterns, Experience with MySQL and query optimization, Experience with REST API and webhooks, Experience with Eloquent ORM, Ability to implement layouts in HTML, SCSS, Tailwind, Experience with Git and Git Flow, Experience with Docker Compose 📃 Skills: PHP, Laravel, Angular, MySQL, Eloquent, REST, HTML, SCSS, Tailwind, Git, Docker, OOP, SOLID 🏢 Description: O pracodawcy Dołączysz do firmy rozwijającej własny produkt SaaS o rosnącej skali, wykorzystywany komercyjnie w obszarze HR Tech / systemów transakcyjnych. Zespół opiera się na partnerskiej współpracy, dużej samodzielności i kulturze jakości kodu. Pracujemy z nowoczesnym stackiem i jasną wizją rozwoju produktu. Zakres obowiązków Współtworzenie i rozwijanie kluczowych elementów aplikacji webowej - backend + frontend. Przekładanie wymagań biznesowych na stabilną logikę backendową oraz przejrzyste widoki w Angularze. Projektowanie i rozwijanie API oraz dbanie o spójny przepływ danych między modułami. Praca z bazą danych (MySQL) i optymalizacja zapytań, aby system działał wydajnie i przewidywalnie. Wdrażanie layoutów w HTML, SCSS, Tailwind - również w pixel‑perfect. Bieżąca współpraca z UX/UI i innymi developerami przy planowaniu funkcjonalności. Udział w code review i troska o wysoką jakość wdrożeń. Współtworzenie architektury i rozwiązań systemowych. Dokumentowanie kluczowych decyzji i rozwiązań technicznych. Wymagania Szukamy osoby, która: posiada komercyjne doświadczenie (2+ lata; rozważymy też juniorów), bardzo dobrze zna Laravel (PHP 8+) i Angular - oba są wymagane, potrafi budować przewidywalne, spójne i czytelne rozwiązania end‑to‑end (backend + frontend), doskonale zna OOP, SOLID, wzorce projektowe, swobodnie pracuje z MySQL i optymalizacją zapytań (Eloquent ORM), zna REST API, webhooki oraz integracje z usługami zewnętrznymi, umie wdrażać layouty w HTML, SCSS, Tailwind, pracuje z Git / Git Flow oraz Docker Compose, dba o jakość, architekturę i logikę kodu, potrafi konstruktywnie współpracować z UX/UI i zespołem developerskim, jest samodzielna, odpowiedzialna i dowozi tematy od A do Z. Mile widziane: Redis, Elasticsearch, doświadczenie z AI / modelami językowymi, doświadczenie w systemach SaaS / transakcyjnych / HR Tech. Oferujemy Indywidualne ścieżki rozwoju oraz dostęp do międzynarodowych projektów. Pracę z nowoczesnymi narzędziami i najnowszymi technologiami. Dowolną formę współpracy - UoP lub B2B . Atrakcyjne wynagrodzenie i system premiowy. Prywatną opiekę medyczną LuxMed (w tym możliwość rozszerzeń stomatologicznych i rehabilitacyjnych). System kafeteryjny + karta Multisport . Dofinansowanie do nauki języków obcych (zajęcia online z native speakerami). Elastyczny czas pracy w modelu hybrydowym. Imprezy integracyjne, wydarzenia firmowe i przede wszystkim zgrany zespół ! Sprawdź inne ciekawe oferty pracy na: https://antal.pl/dla-kandydata Check out other interesting jobs on: https://en.antal.pl/candidates

🏢 Summary: Frontend Developer role focused on building modern web applications using React, TypeScript, and Next.js (App Router) in a clean, up-to-date monorepo environment. The position involves developing complex UI components, maintaining a shared design system, and implementing comprehensive unit and E2E testing. The role emphasizes high code quality, collaboration, and use of modern tools including AI-assisted development. 🗂️ Requirements: Strong JavaScript skills, Strong TypeScript skills, Commercial or strong practical experience with React, Good knowledge of HTML, Good knowledge of CSS, Experience with responsive design, Experience with REST APIs, Experience with GraphQL APIs, Experience writing unit tests, Experience with React Testing Library or similar, Hands-on experience with E2E testing, Experience with Playwright or similar E2E tool, Proficiency with Git, Ability to work independently, Communicative English 📃 Skills: JavaScript, TypeScript, React, Next.js, HTML, CSS, Tailwind, Radix, shadcn, Storybook, Playwright, Vitest, Jest, ReactTestingLibrary, REST, GraphQL, Git, Turborepo, Yarn, TanStack, react-hook-form, Auth0, i18n, Claude, Cursor 🏢 Description: About us We build modern, high-quality web applications for the mobility sector using a clean TypeScript/React/Next.js monorepo. We keep our stack up to date and work with the latest stable versions of Next.js (App Router), React 19+, Tailwind, Playwright, GraphQL, and Storybook for component development and documentation. We also actively integrate AI tools into our daily workflow. You won’t have to deal with legacy code, outdated patterns, or old dependencies. Our team (8-10 people) maintains high standards through regular code reviews, 1:1 mentoring, and continuous refactoring and experimentation with new tools and practices. The frontend team is based in Poland, while the rest of the product team is in Sweden -so you’ll work closely with a local FE team while collaborating across the wider organisation. We’re looking for a proactive frontend developer with hands-on experience in React, who is comfortable writing tests (including E2E), and can work independently in a modern stack -while continuing to grow in a supportive, high-standard environment. 👉 You don’t need to tick every single box -if most of this sounds like you, we’d love to talk. Day-to-day responsibilities • Build new features and complex UI components using React / TypeScript / Next.js (App Router) • Develop and improve components within our shared design system (Tailwind + Radix / shadcn/ui), with documentation in Storybook • Write and maintain E2E tests in Playwright (an important part of the role) • Write unit and integration tests (Vitest + React Testing Library) • Work with REST / GraphQL APIs, debug issues across the stack, and participate in code reviews • Use AI coding assistants (Claude, Cursor, etc.) to speed up development and improve code quality Must-have requirements • Solid JavaScript / TypeScript skills -you write clean, type-safe code • Practical experience with React (commercial or strong personal projects) • Good understanding of HTML/CSS and responsive design • Experience working with REST and/or GraphQL APIs • Experience writing unit tests (e.g. Vitest / Jest + React Testing Library) • Some hands-on experience with E2E testing (Playwright or similar tools like Cypress) • Comfortable working with Git (branches, PRs, rebasing, code reviews) • Communicative English (written and spoken) • Ability to deliver working features independently Nice-to-have (not required, but a plus) • Experience with Next.js App Router in real-world projects • Monorepo experience (Turborepo, Yarn workspaces, etc.) • Familiarity with TanStack Router, react-hook-form, Auth0, or i18n solutions • Experience working with design systems or component libraries (Radix, shadcn/ui, Headless UI) • Storybook experience • Exposure to AI-assisted coding in real workflows What we offer • Work with a modern, up-to-date stack -no legacy code, no outdated libraries • 1:1 mentoring and thorough code reviews from experienced developers • A modern environment with room to experiment (including strong AI usage) • Real ownership over features and product areas • No crunch, flexible working hours, fully remote setup • Clear growth path -from feature/E2E contributor to broader frontend ownership

🏢 Summary: Full-time Backend Developer role focused on building and maintaining scalable Node.js and TypeScript applications for US clients across various industries, including MVP-stage products. The position involves designing backend architecture, working with SQL/NoSQL databases, and collaborating in Scrum teams in a flexible, remote-first environment. The offer includes long-term cooperation and participation in diverse, technically challenging projects. 🗂️ Requirements: 2+ years commercial experience in Node.js, Experience with Node.js frameworks (Express.js, NestJS or similar), Strong proficiency in TypeScript, Experience with SQL databases, Experience with NoSQL databases, Knowledge of SOLID and KISS principles, Knowledge of design and architecture patterns, Experience with Docker, Experience with GitHub Actions, Basic experience with AWS services, Ability to use ORM or query builders (e.g. Prisma, Knex), English level B2, Polish level C1 📃 Skills: Node.js, TypeScript, JavaScript, Express, NestJS, Fastify, SQL, NoSQL, Prisma, Knex, Docker, AWS, GitHub, GitHubActions, React 🏢 Description: We are looking for skillful Backend Developers to join one of our teams working with US clients - referrals from the high-end American IT market. Our tech stack is built around React, Node.js and TypeScript. We are working with well-established companies and sometimes startups in their early stages (MVPs), which makes the job full of diversity and exciting challenges while crafting cutting-edge solutions. Enjoy the flexibility of working within the Polish time zone and collaborate with clients from diverse industries such as FinTech, SportsTech, MedTech, and many others. Required skills: 2+ years of commercial experience in Node.js, SQL and NoSQL DBs, knowledge of JS frameworks (e.g Express.js, NestJS), experience in TypeScript, SOLID and KISS, knowledge about design and architecture patterns, know how and why Docker and GitHub Actions works, basic usage of AWS services, English B2, Polish C1 Offer: B2B/UZL, paid days off, 100% remote (or hybrid/onsite - as you prefer), Polish time zone, flexible hours, full-time position, long-term contract, Scrum Teams Perks and Benefits: Budgets for self-development, integrations, healthcare & sport activities, Mentoring Program, Individual Career Path, Paid Time Off, Paid Health Break & more Tools you'll use: Apple MacBook Pro, Slack, GSuite, GitHub, Jira, Coda, FigJam Your future tasks and duties: Writing readable and easy-to-maintain JS/TS code with OOP flavor Writing documentation for delivered code Code review of other developers in the team Direct involvement with the design and modification of basic DB structures Propose improvements and share proactive ideas/solutions with the team to enhance the team's work processes Share insights with the team to diagnose issues and focus on solutions Actively participate in project discussions Listen to the client's needs and, after consulting the team, suggest solutions Support less experienced team members About you - Tech skills & Experience: 2+ years of commercial experience in Node.js Good experience with at least one Node.js backend framework (e.g. Express.js, NestJS, Fastify, etc) - you know most of its basic APIs/features, worked on at least 1-2 projects involving such technologies Strong proficiency in TypeScript. You have practical experience with static typing, advanced types, and configuring TS compilers, treating it as your primary language to build robust and type-safe backend applications Potentially worked with NoSQL databases and/or in-memory databases and utilized them as a data store Worked with SQL databases (integration-wise and as a basic design skill) with ORM or query builder tool (ie. Prisma, Knex) Knows the basics of building AI applications (RAG, Agents, etc.) Use AI effectively in their work About you - Soft Skills: English level B2 to cooperate with American clients Polish level C1 to communicate easily within the team Open-minded to new challenges (e.g. different frameworks) Understand the significance of MVP and prioritize the pursuit of excellence and high-quality outcomes, even amid tight project timelines. Communicate with the team to efficiently translate business complexities (user stories/tasks) into solutions (results/estimations) Staying on top with trends/news, sharing them, teaching others and aiming for the best quality solutions Strong problem-solving abilities to diagnose issues, suggest solutions, and make decisions based on project requirements Nice to have: Worked in Agile/Scrum on a daily basis consisting of people with similar skills and monitoring code quality on a daily basis Basic experience with AWS - used some services in specific cases Basic experience with Docker - know how to prepare and debug the environment and connect things up to work locally Worked in the very beginning of the product development/creation stage Understand the significance of MVP and aim to deliver top-notch results, even amid tight project timelines Recruitment process: CV Review Phone call with our Recruiter (15min) Soft-skills interview with our Recruiter (1h) Technical interview with our Specialists (2h) Decision and feedback 🥳 Meaningful projects, top-notch experts and value-driven workplace Sound good? Apply now!

🏢 Summary: Senior Mashup Developer role focused on building advanced ReactJS applications with Qliksense integration and AI-assisted development tools. The position involves developing reusable UI components, implementing state management, ensuring code quality through testing, and addressing security vulnerabilities in an Agile environment. Hybrid B2B contract with flexible on-site presence in Warszawa or Kraków. 🗂️ Requirements: Minimum 10 years of experience with ReactJS (16.x or above), Hands-on experience with AI developer tools (e.g., GitHub Copilot), Strong expertise in Typescript and ES6, Experience with D3.js and AG-Grid, Solid knowledge of React Hooks and Redux, Proficiency in HTML5, CSS3, Bootstrap, and media queries, Strong understanding of Material-UI or similar React UI libraries, Experience with Websockets and Enigma JS, Familiarity with Qlik API integration, Experience with unit testing using Jest and Enzyme 📃 Skills: ReactJS, Typescript, ES6, D3.js, AG-Grid, Redux, HTML5, CSS3, Bootstrap, Material-UI, Websockets, EnigmaJS, Qlik, Jest, Enzyme, GitHubCopilot, Jira, Jenkins, Ansible, Webpack, Axios, Fetch 🏢 Description: Summary: We are seeking a highly experienced Mashup Developer with a minimum of 10 years of expertise in ReactJS (16.x or above). The ideal candidate must demonstrate strong proficiency in Typescript, ES6, and AI tools such as GitHub Copilot. A solid foundation in D3.js, AG-Grid, and integrating Qliksense API with React is crucial. This role demands innovative problem-solving skills and the ability to create user-friendly interfaces. What we offer: Hybrid 6 days per month ( flexible) from Warszawa or Kraków Rate: 180 PLN/ H + VAT B2B Contract Main Responsibilities: Develop robust applications using ReactJS and integrating various components. Utilize AI tools for efficient development and coding practices. Implement state management using React Redux and middleware. Construct generic UI components for various applications. Integrate Qliksense API with the React layer seamlessly. Ensure high-quality code through unit testing frameworks. Work collaboratively in an Agile environment utilizing tools like Jira and Jenkins. Identify and address security vulnerabilities in the code. Key Requirements: Minimum 10 years of experience in ReactJS (16.x or above). Hands-on experience with AI developer tools (e.g., GitHub Copilot). Strong expertise in Typescript and ES6. Experience with D3.js and AG-Grid. Solid knowledge of React Hooks and Redux. Proficient in HTML5, CSS3, and Bootstrap with media query exposure. Strong understanding of Material-UI or similar React UI libraries. Experience with Websockets and Enigma JS. Familiarity with Qlik API integration. Experience with unit testing using Jest and Enzyme. Nice to Have: Experience with Axios and Fetch for API calls. Exposure to Module Federation using Webpack. Knowledge in utilising Jira, Jenkins, and Ansible for automated deployments. Familiarity with security vulnerability identification and remediation. Understanding of MI reporting platforms.

🏢 Summary: Lead FullStack Engineer role focused on building and scaling high-traffic, public-facing web platforms for a major European online marketplace. The position involves full SDLC ownership, AI-assisted development, and delivering highly available, performance-optimized solutions using modern cloud and frontend technologies. Work includes backend and frontend development, cloud infrastructure, CI/CD, and integration of AI frameworks into the development workflow. 🗂️ Requirements: 5+ years of experience building reliable, scalable software systems, Strong knowledge of software architecture and design patterns, Proficiency in C# and TypeScript, Strong experience with SQL and NoSQL databases, Strong frontend development experience (HTML, CSS, JavaScript), Experience with React, Next.js, Vue.js or Angular, Experience with AI tools (ChatGPT, Codex) in development workflows, Experience with AI frameworks (Vercel AI SDK, LangChain), Experience with AWS, Terraform, Docker, Experience building and consuming APIs in service-based architectures, Experience with CI/CD pipelines, Experience with logging and monitoring tools (Datadog, NewRelic), Strong unit testing skills (backend and frontend), Experience with Git, Upper-intermediate English, Availability to work in required time zone (ET or 13:00–21:00 EET) 📃 Skills: C#, TypeScript, SQL, NoSQL, GraphQL, Redis, HTML, CSS, JavaScript, React, Next.js, Vue.js, Angular, ChatGPT, Codex, LangChain, Vercel, AWS, Terraform, Docker, Git, CI/CD, Datadog, NewRelic 🏢 Description: Аbout us: N-iX i s a software development service company that helps businesses across the globe develop successful software products. Founded in 2002 in Lviv, N-iX has come a long way and increased its presence in eight countries Poland, Ukraine, Sweden, Bulgaria, Malta, the UK, the US, and Colombia. Today, we are a strong community of 2,000+ professionals and a reliable partner for global industry leaders and Fortune 500 companies. About the client: Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers. Responsibilities: Developing fast, high-traffic public-facing websites Explore new technologies and help the team to use them Work using AI tools and apply them to the SDLC Following software development best practices while delivering the work Following testing principles while testing your own code to ensure production readiness Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) Requirements: 5+ years developing reliable, highly available, and scalable software systems Strong understanding of software architecture and design patterns Firm grasp of clean code principles and coding standards Strong proficiency using AI tooling, such as ChatGPT/Codex, for rapid development Experience integrating AI tooling into your development environment for streamlined usage Experience with AI Frameworks like Vercel AI SDK, LangChain, etc. Strong proficiency with the following technologies: C#+Typescript Strong proficiency with SQL & NoSQL datastores (GraphQL, Redis) Strong proficiency with frontend development (HTML, CSS, JavaScript) Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js. Hands-on experience developing and maintaining 3rd party content management systems Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker Experience with APIs and developing in a service-based application environment Experience building optimized UIs for performance Proficiency with version control systems such as Git Experience working within a formal CI/CD pipeline Experience with logging, monitoring, and alerting services like Datadog, Newrelic Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend At least Upper-intermediate English level This role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately. We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers