April 30, 2026

Senior Frontend Engineer (Game Platform)

Senior • Remote

170 - 200 PLN

Warsaw, Poland

At Pretius, we are looking for Senior Frontend Engineer to take technical ownership of the frontend architecture powering our digital draw games for global-scale platform in the field of gaming and lotteries.

Project / Role

  • Own and evolve the frontend architecture and technical frameworks used across multiple game clients.

  • Design and maintain reusable client foundations and game category frameworks supporting different game paradigms.

  • Develop and maintain frontend systems using React, TypeScript, Vite, and modern CSS frameworks.

  • Implement and maintain event-driven client-server communication patterns for real- time and on-demand gameplay flows.

  • Translate gameplay flows, UX layouts, and production specifications into scalable frontend implementations.

  • Support and guide external development studios building game experiences on top of the client frameworks.

  • Maintain and manage source code repositories, versioning practices, and build pipelines for game clients.

 

Requirements

  • 5+ years of experience developing complex frontend applications using React and TypeScript.

  • Familiarity with HTML5 game development technologies, such as Three.js or PlayCanvas.

  • Proficiency in building interactive or real-time graphical applications for the web.

  • Experience working with external development studios or distributed engineering teams.

  • Strong experience building state-driven or event-driven frontend systems.

  • Solid understanding of asynchronous programming and real-time client-server interactions.

  • Experience with modern frontend tooling such as Vite, CSS frameworks (e.g., Tailwind), and automated testing frameworks.

  • Strong experience with Git, version control, and collaborative development workflows.

  • Ability to translate product and UX concepts into robust technical implementations.

  • Experience collaborating with designers, backend engineers, and product teams.

  • Strong problem-solving and communication skills.

  • Experience working in regulated, transactional, or high-reliability environments is a plus.

 

What do we offer?

  • We focus on long-term relationships based on fair principles and reliability.

  • Co-financing of the Multisport card and Medicover private healthcare.

  • Modern office available.

  • Team bonding activities, internal courses, conferences, certifications.

Similar jobs you might like

Technology

Pretius

Senior Frontend Software Engineer

Senior

Hybrid

Warsaw, Poland

150 - 180 PLN

🏢 Summary: Offer for a Senior Frontend Software Engineer to develop and enhance a popular eCommerce platform, with strong ownership over frontend architecture and technical decisions. The role involves implementing new features, ensuring code quality, performance, and accessibility in a structured, collaborative environment. Hybrid work model with regular collaboration with product and UX/UI teams. 🗂️ Requirements: Commercial experience as Frontend Developer or Software Engineer, Very good knowledge of HTML, Very good knowledge of CSS, Very good knowledge of JavaScript, Very good knowledge of React, Very good knowledge of TypeScript, Experience collaborating with Product Managers, Experience collaborating with UX/UI Designers, Ability to translate business and UX requirements into scalable frontend solutions, Experience identifying and reducing frontend technical debt, English level minimum B2+ 📃 Skills: React, TypeScript, JavaScript, HTML, CSS 🏢 Description: W Pretius poszukujemy Senior Frontend Software Engineer do rozwoju popularnej platformy eCommerce. Tryb pracy: hybryda (kilka razy w miesiącu w biurze w Warszawie) Projekt / Rola Rozwój popularnej platformy ecommerce Praca w zorganizowanym środowisku, z kluczową odpowiedzialnością za dowiezienie celów Aktywny udział w podejmowaniu decyzji technicznych we współpracy z zespołem oraz dot. architektury frontendu. Wdrażanie nowych funkcjonalności, dbanie o jakość kodu, wydajność oraz dostępność Stack technologiczny (React, TS, JS, HTML, CSS) Oczekiwania Doświadczenie w pracy na podobnym stanowisku (Frontend Developer / Software Engineer) Bardzo dobra znajomość: HTML, CSS, JavaScript, React oraz TypeScript Doświadczenie we współpracy z Product Managerami oraz UX/UI Designerami Umiejętność przekładania wymagań biznesowych oraz UX na przejrzyste, skalowalne i łatwe w utrzymaniu rozwiązania frontendowe Doświadczenie przy redukowaniu oraz identyfikowaniu długu technologicznego w obszarach frontendowych. Samodzielność oraz odpowiedzialność Znajomość języka angielskiego na poziomie minimum B2+ Mile widziane: Doświadczenie w pracy przy dużych aplikacjach webowych oraz integracjach frontendu między zespołami Znajomość systemów projektowych oraz bibliotek komponentów Co oferujemy w Pretius? Stawiamy na długofalowe relacje oparte na uczciwych zasadach i rzetelności Dofinansowanie karty sportowej Multisport i opieki zdrowotnej Medicover Możliwość pracy w nowoczesnym biurze Imprezy integracyjne, szkolenia wewnętrzne, konferencje, certyfikacje

Technology

Link Group

Frontend Developer

Senior

Remote

Lublin, LU, Poland

32,000 - 32,000 PLN

🏢 Summary: Frontend Engineer role focused on leading and evolving the architecture of digital draw game clients. Responsible for building and optimizing scalable, event-driven frontend systems using a modern React and TypeScript stack, enabling real-time gameplay and backend communication. The position includes ownership of client frameworks, build pipelines, and technical alignment with external studios. 🗂️ Requirements: 5+ years developing complex frontend applications, Strong experience with React, Strong experience with TypeScript, Hands-on experience with HTML5 game technologies, Experience building interactive web applications, Strong knowledge of state-driven systems, Strong knowledge of event-driven systems, Deep understanding of asynchronous programming, Proficiency with Vite, Experience with CSS frameworks, Experience with automated testing environments, Experience with Git and version control workflows 📃 Skills: React, TypeScript, Vite, HTML5, Three.js, PlayCanvas, JavaScript, Tailwind, CSS, Git, Testing, Asynchronous 🏢 Description: Frontend developer We are looking for an experienced Engineer to take technical ownership of the frontend architecture powering our digital draw games. In this role, you will design and maintain the core client frameworks that enable the integration of various game categories with our platform, defining how games handle lifecycles, player interactions, and real-time backend communication. Responsibilities: Architectural Leadership: Lead the evolution of frontend frameworks and reusable client foundations to support diverse game paradigms. Core Development: Build and optimize frontend systems using a modern stack including React, TypeScript, and Vite . Communication Patterns: Implement robust, event-driven client-server interactions for both on-demand and real-time gameplay. Technical Translation: Turn complex gameplay flows, UX layouts, and production specs into scalable, high-performance implementations. External Partnership: Act as a technical guide for external development studios, ensuring their games align with our architectural standards. Standards & Quality: Enforce coding standards, manage build pipelines, and identify technical bottlenecks or risks early in the lifecycle. Requirements: 5+ years of experience developing complex frontend applications with a focus on React and TypeScript . Hands-on experience with HTML5 game technologies , such as Three.js or PlayCanvas , and building interactive web applications. Strong background in state-driven and event-driven systems , including a deep understanding of asynchronous programming. Proficiency with modern tooling, including Vite, CSS frameworks (like Tailwind) , and automated testing environments. Collaboration Skills: Proven ability to work alongside designers and backend teams to translate product concepts into technical reality. Workflow Expertise: Solid experience with Git , version control practices, and managing collaborative development workflows.

Technology

Pretius

Frontend Developer

Mid

Remote

Warsaw, Poland

110 - 130 PLN

🏢 Summary: Frontend Developer role focused on building and developing an advanced analytics and operational ecosystem delivering large-scale campaign performance data and investment decision tools. The position involves creating bulk-management tools, RBAC systems, reporting engines, and scalable high-throughput data solutions in collaboration with Data Science teams. Work is based on a modern React and TypeScript stack within an R&D-driven, CI/CD-oriented environment. 🗂️ Requirements: Very good knowledge of JavaScript, Commercial experience building web applications with React, Experience with TypeScript, Experience with testing in frontend projects, Ability to design and maintain scalable frontend solutions, Experience working in structured environment with Code Review and CI/CD, English level minimum B2 📃 Skills: JavaScript, React, TypeScript, Testing, CI/CD, Apache, Airflow, RBAC 🏢 Description: W Pretius poszukujemy Frontend Developera do rozwoju zaawansowanego ekosystemu analityczno - operacyjnego. Projekt / Rola Projekt skupia się na dostarczaniu precyzyjnych danych dotyczących efektywności kampanii oraz narzędzi wspierających podejmowanie decyzji inwestycyjnych na dużą skalę. Budowa narzędzi typu bulk - management, systemów zarządzania uprawnieniami RBAC oraz tworzenie silników raportowych i systemów atrybucji. Projektowanie i utrzymanie potoków danych o wysokiej przepustowości, m.in. z wykorzystaniem technologii takich jak Apache Airflow . Współpraca z zespołami Data Science i analitykami przy wdrażaniu złożonych modeli danych do środowisk produkcyjnych, z naciskiem na ich skalowalność. Praca w zorganizowanym środowisku: R&D, Code Review, Testy, CI/CD. Nowy stack technologiczny ( React, TS ). Oczekiwania Proaktywna postawa rozwojowa, dbanie o szczegóły i standardy jakości. Bardzo dobra znajomość JavaScript. Doświadczenie w budowaniu aplikacji webowych z użyciem React, TypeScript, Testing. Znajomość języka angielskiego na poziomie minimum B2. Mile widziane: Znajomość: Zustand, Node, UX/UI. Co oferujemy w Pretius? Stawiamy na długofalowe relacje oparte na uczciwych zasadach i rzetelności. Dofinansowanie karty sportowej Multisport i opieki zdrowotnej Medicover. Możliwość pracy w nowoczesnym biurze. Imprezy integracyjne, szkolenia wewnętrzne, konferencje, certyfikacje.

Technology

PTT Consulting Sp. z o. o.

Frontend Game Engineer

Senior

Remote

Warsaw, Poland

160 - 190 PLN

🏢 Summary: Senior Frontend Architect role focused on building and evolving scalable frontend architecture for multiple HTML5 game clients. The position involves developing reusable frameworks, implementing real-time client-server communication, and delivering interactive web-based game experiences using modern frontend technologies. The role also ensures architectural standards, performance, and compliance across game clients. 🗂️ Requirements: 5+ years experience with React and TypeScript, Experience with HTML5 game technologies (Three.js or PlayCanvas), Experience building interactive or real-time web applications, Strong knowledge of event-driven or state-driven frontend architectures, Solid understanding of asynchronous programming and real-time client-server communication, Experience with Vite and modern CSS frameworks, Experience with automated frontend testing frameworks, Strong experience with Git and version control workflows, Ability to design scalable frontend architectures 📃 Skills: React, TypeScript, JavaScript, HTML5, CSS, Vite, Tailwind, Three.js, PlayCanvas, Git, WebSockets, Testing 🏢 Description: Key responsibilities: Own and evolve the frontend architecture and technical frameworks used across multiple game clients. Design and maintain reusable client foundations and game category frameworks supporting different game paradigms. Develop and maintain frontend systems using React, TypeScript, Vite, and modern CSS frameworks. Implement and maintain event-driven client-server communication patterns for realtime and on-demand gameplay flows. Translate gameplay flows, UX layouts, and production specifications into scalable frontend implementations. Support and guide external development studios building game experiences on top of the client frameworks. Maintain and manage source code repositories, versioning practices, and build pipelines for game clients. Define and enforce frontend architecture patterns, testing practices, and coding standards. Collaborate with product, design, backend, and QA teams to ensure smooth integration and reliable player experiences. Identify architectural risks, performance bottlenecks, and technical dependencies early and drive resolution. Ensure all game clients comply with technical, operational, and regulatory requirements Reguirements: 5+ years of experience developing complex frontend applications using React and TypeScript. Experience with HTML5 game development technologies, such as Three.js or PlayCanva s. Experience building interactive or real-time graphical applications for the web. Experience working with external development studios or distributed engineering teams. Strong experience building state-driven or event-driven frontend systems. Solid understanding of asynchronous programming and real-time client-server interactions. Experience with modern frontend tooling such as Vite, CSS frameworks (e.g., Tailwind), and automated testing frameworks . Strong experience with Git, version control, and collaborative development workflows . Ability to translate product and UX concepts into robust technical implementations. Experience collaborating with designers, backend engineers, and product teams. Strong problem-solving and communication skills. Nice to have: Experience working in regulated, transactional, or high-reliability environments is a plus. Client: A global leader with a sharp focus on lottery solutions. A confident step forward building on a long history of delivering safe and secure technology, demonstrating strong commitment to customers as a dedicated lottery service provider. Leveraging collective insight, experience, and expertise to create reliable and engaging solutions that help lottery clients achieve objectives, meet player needs, and deliver meaningful benefits to communities.

Technology

Appliscale

Senior Frontend React Engineer (PST Overlap)

Senior

Remote

Krakow, Poland

24,000 - 28,000 PLN

🏢 Summary: Senior Frontend Software Engineer role focused on building and maintaining complex web applications that power competitive tournament systems and public-facing experiences. The position involves end-to-end ownership of frontend features, including graph-based workflows, account management, and tournament operations. You will collaborate cross-functionally to deliver high-quality, scalable, and performant UI solutions integrated with backend services. 🗂️ Requirements: 5+ years frontend development experience, 4+ years experience with React, 4+ years experience with TypeScript, Bachelor's degree in Computer Science or related field, Senior-level experience building production frontend applications, Hands-on experience with GraphQL, Hands-on experience with Next.js including SSR and CSR, Experience integrating frontend with backend services, Understanding of modern frontend architecture, Knowledge of state management patterns, Experience with component-based design, Understanding of accessibility standards (WCAG), Ability to work in distributed teams across time zones 📃 Skills: React, TypeScript, JavaScript, GraphQL, Next.js, SSR, CSR, REST, Spring, HTML, CSS, WCAG 🏢 Description: About the role: Our client is one of the largest game studios known for its very successful online MOBA and FPS franchises. You will be part of a team that builds the systems and tools that power competitive play - from internal operator tooling used to create and manage tournaments, to player-facing web experiences that support competition at scale. We’re looking for a Senior Frontend Software Engineer to help us design and build complex frontend applications that support tournament creation, account management, and competition workflows. This role will work across internal operator tools as well as contribute to our public-facing experiences. This is a hands-on senior role where you’ll be expected to take ownership of features end-to-end, collaborate closely with product and backend partners, and deliver high-quality, maintainable frontend code. You will work closely with the engineering team in Los Angeles and other locations in the US West Coast. Due to working across multiple time zones, flexibility to attend later meetings on a daily basis is an important factor for success in this role (up to 9-10PM CEST). Each team member is expected to proactively propose tools, designs, and implementation strategies. Responsibilities: Design, build, and maintain frontend applications that support tournament setup, configuration, and operations. Work on complex UI workflows for creating and managing graph-based tournament structures. Contribute to public-facing web experiences with a focus on performance, usability, and polish. Collaborate closely with backend engineers, product managers, and designers to translate requirements into robust UI solutions. Integrate frontend applications with backend services, including GraphQL APIs and Java Spring REST APIs. Participate fully in team rituals, including 2-week sprints, planning, refinement, and retrospectives. Take clear ownership of your work - asking questions early, surfacing risks, and caring deeply about the quality of the end results Required qualifications: 5+ years of experience with Frontend Technologies 4+ years of experience with React and Typescript Bachelor's or higher degree in Computer Science , Software Engineering, or a related field Senior-level experience building production frontend applications. Hands-on experience with GraphQL and Next.js , including both SSR and CSR patterns. Experience integrating frontend applications with backend services (experience consuming Java Spring REST APIs is a plus). Solid understanding of modern frontend architecture, state management, and component design. Comfortable working independently in a remote environment while staying engaged and communicative. Understanding of accessibility standards and guidelines (e.g. WCAG) Nice to have: Working with PaaS Vendors like Netlify Hands-on experience working with Public Cloud, preferably AWS (Lambda/Serverless). Familiarity with complex data visualization or workflow-heavy UIs. Experience working on consumer-facing web products at scale. Familiarity with trading card games (TCGs) and tournament formats (e.g., Swiss rounds, decklists, brackets), or a strong interest in competitive gaming, esports. Familiarity with testing frameworks (e.g. JEST, RTL. Playwright) Experience with observability and monitoring tools, preferably Datadog

Technology

STS

Senior Software Engineer (Frontend)

Senior

On-site

Katowice, Poland

🏢 Summary: Senior Frontend Software Engineer responsible for developing and maintaining modern web applications with scalable architecture. The role covers full lifecycle delivery, including implementation, deployment, monitoring, and maintenance in production environments. Focus is on high-quality, performant solutions aligned with business needs. 🗂️ Requirements: Minimum 5 years of experience in web application development, Strong knowledge of JavaScript and TypeScript, Experience with modern frontend frameworks (React, Angular, or Vue), Experience designing scalable frontend architectures, Knowledge of HTML5, CSS3, and responsive design (RWD), Experience with Git version control, Experience integrating with backend services (REST, WebSocket, gRPC), Experience deploying and maintaining applications in production environments, Ability to write clean, production-ready code 📃 Skills: JavaScript, TypeScript, React, Angular, Vue, HTML5, CSS3, Git, REST, WebSocket, gRPC, RWD 🏢 Description: Poszukujemy doświadczonego Senior Software Engineer'a (Frontend) , który dołączy do naszego zespołu i będzie odpowiedzialny za rozwój oraz utrzymanie nowoczesnych aplikacji webowych. Szukamy osoby, która łączy umiejętności techniczne z rozumieniem potrzeb biznesowych i potrafi dostarczać wysokiej jakości rozwiązania. Wymagane Minimum 5 lat doświadczenia w tworzeniu aplikacji webowych Bardzo dobra znajomość JavaScript/TypeScript Doświadczenie w pracy z nowoczesnymi frameworkami frontendowymi (np. React, Angular lub Vue) Doświadczenie w projektowaniu skalowalnych architektur frontendowych Znajomość HTML5, CSS3 oraz zasad responsywnego projektowania (RWD) Doświadczenie w pracy z systemami kontroli wersji (Git) Znajomość komunikacji z backendem (REST API, Websocket, gRPC) Umiejętność pisania czytelnego kodu produkcyjnego Doświadczenie w pracy z aplikacjami w środowisku produkcyjnym (wdrożenia, monitoring, utrzymanie) Oczekujemy Samodzielności w realizacji zadań, od analizy po wdrożenie i utrzymanie Dbałości o jakość, wydajność i dostępność aplikacji Umiejętności diagnozowania i rozwiązywania problemów (np. wydajnościowych) Dbałości o przejrzystość i modularność kodu Umiejętności analizy systemów oraz przepływu danych między komponentami Rozumienia zależności pomiędzy elementami systemu Umiejętności przekładania wymagań biznesowych na rozwiązania techniczne Dobrej organizacji pracy i umiejętności priorytetyzacji zadań Gotowości do dzielenia się wiedzą i wspierania zespołu Aktywnego udziału w rozwoju architektury aplikacji Efektywnej komunikacji i pracy zespołowej Zaangażowania w pełen cykl życia produktu Co oferujemy Pracę w świetnym zespole, którego siłą jest pasja i współpraca, Pracę hybrydową (3+2) Pracę pod skrzydłami przypisanego partnera w procesie onboardingu, Nowoczesne biuro w Katowicach z konsolą PS5 i piłkarzykami, Bezpłatne zajęcia z języka angielskiego, Kartę MedicoverSport, ubezpieczenie na życie i opiekę medyczną, Bezpłatne bilety na mecze reprezentacji Polski, Urozmaicone śniadania i obiady w dobrej cenie w naszym Bistro, Ścieżkę rozwoju osobistego oraz budżet na kursy i szkolenia, Codziennie świeże owoce, dobra kawa i zdrowe przekąski, Poszanowanie równowagi między życiem zawodowym a prywatnym.

Technology

Pretius

Senior Java Developer

Senior

Remote

Warsaw, Poland

130 - 150 PLN

🏢 Summary: Senior Java Developer role focused on building and maintaining scalable, secure backend systems for a global gaming and lotteries platform. The position involves developing cloud-native applications using Java 17+ and Spring Boot, managing PostgreSQL databases, and deploying containerized solutions with Kubernetes and Helm. 🗂️ Requirements: Strong experience with Java 17+, Hands-on experience with Spring, Spring Boot, Spring Security, Experience with cloud-native application development, Experience with SQL databases and PostgreSQL, Knowledge of Maven and CI/CD pipelines, Proficiency with Git and GitHub, Experience with JUnit, AssertJ, Hamcrest, Experience with Kubernetes and Helm, Knowledge of Docker, Bash/Shell scripting skills, Experience in Agile (Scrum/Kanban) environments, Bachelor's degree in Computer Science or related field 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, PostgreSQL, SQL, Maven, CICD, Git, GitHub, JUnit, AssertJ, Hamcrest, Kubernetes, Helm, Docker, Bash, Shell 🏢 Description: At Pretius , we are looking for Senior Java Developer to a global-scale platform in the field of gaming and lotteries project. Project/Role Design, develop, and maintain robust, configurable backend applications using Java 17+ and Spring Boot to meet diverse customer requirements Ensure efficiency of PostgreSQL databases for scalable solutions Ensure security, scalability, and performance of backend systems Use Bash/Shell scripting for automation and system integration tasks Contribute to application deployment using Docker and Kubernetes, including package management with Helm Requirements Strong experience in backend development with Java 17+ , Spring / Spring Boot / Spring Security , and cloud-native applications Experience with SQL databases , Maven , and CI/CD pipelines Proficiency in Git & GitHub , including pipeline development Experience with testing frameworks such as JUnit, AssertJ, and Hamcrest Experience with Kubernetes and Helm for container orchestration and deployment Knowledge of Bash/Shell scripting for automation and system integration Experience working in Agile environments (Scrum/Kanban) and enterprise settings Strong English communication skills (B2/C1) Ability to lead, mentor, and collaborate effectively in distributed teams Bachelor's degree in Computer Science, Computer Engineering, or similar technical field What do we offer? We focus on long-term relationships based on fair principles and reliability Co-financing of the Multisport card and Medicover private healthcare Modern office available Team bonding activities, internal courses, conferences, certifications

Technology

Link Group

Senior Frontend Developer (React)

Senior

Remote

Warsaw, Poland

100 - 130 USD

🏢 Summary: Senior Frontend Engineer role focused on building and evolving scalable, maintainable web applications using React. The position involves leading development of user-facing features, ensuring performance and accessibility, and shaping the frontend architecture. You will own features end-to-end and collaborate closely with product and design to deliver high-quality solutions. 🗂️ Requirements: Commercial experience with React, Experience building complex frontend features, Ability to work independently on frontend tasks, Experience collaborating with product and design stakeholders, Strong focus on code quality and maintainability, Experience optimizing performance and accessibility 📃 Skills: React, JavaScript, TypeScript, HTML, CSS, Testing, Accessibility, Performance, Git, DesignSystems 🏢 Description: We are hiring a Senior Frontend Engineer to join a product-focused team working on modern web applications for our client. In this role, you’ll take the lead in building user-facing features that are reliable, scalable, and easy to maintain. You’ll work at the intersection of engineering, product, and design — turning ideas into real, high-quality solutions used by end users. This is a position for someone who is comfortable making decisions, taking responsibility for their work, and actively shaping the frontend layer of the product. Your day-to-day Build and evolve frontend features with a focus on scalability and long-term maintainability Turn product concepts and design mockups into functional, high-quality interfaces Work closely with product and design stakeholders to refine solutions and improve user experience Take care of application performance, accessibility, and overall code health Influence technical direction within the frontend domain Spot inefficiencies and improve existing solutions and codebase structure Own your work end-to-end — from idea to production. What we’re looking for Solid commercial experience in frontend development with React Confidence in delivering complex features without close supervision Experience collaborating with non-engineering stakeholders (e.g. product, design) Strong focus on code quality, readability, and long-term maintainability Ownership mindset — you don’t just implement tasks, you drive solutions. Nice to have Experience working on complex or large-scale web platforms Exposure to shared frontend ecosystems or multi-team environments Familiarity with component-driven development and design systems Interest in growing your skills in TypeScript and modern frontend testing practices

Technology

emagine Polska

Senior Frontend Engineer

Senior

On-site

Copenhagen, Denmark

🏢 Summary: Senior Frontend Engineer role focused on driving architectural direction and building scalable, high-quality frontend solutions using React and TypeScript. The position involves designing core features, shaping best practices, improving CI/CD and observability, and mentoring engineers. The engineer will collaborate cross-functionally to deliver performant, maintainable, and accessible user experiences. 🗂️ Requirements: Extensive experience with large-scale frontend applications, Strong hands-on experience with React, Strong hands-on experience with TypeScript, Deep understanding of web architecture and component design, Experience with performance optimization and responsive UI patterns, Solid knowledge of build tools, Experience with version control systems, Experience with CI/CD pipelines, Ability to design scalable and maintainable frontend solutions, Experience contributing to testing and deployment processes 📃 Skills: React, ReactNative, TypeScript, JavaScript, CI/CD, Git, HTML, CSS, Web, Serverless, Cloud 🏢 Description: Senior Frontend Engineer We’re looking for a seasoned engineer who combines deep hands-on skills with the ability to guide architectural direction, influence technical strategy, and mentor others. About the Role Your work will directly shape how thousands of businesses worldwide interact with the clients solutions — improving user experiences, driving customer satisfaction, and helping companies save valuable time. As part of this role, you will be making technical decisions, mentor colleagues, and contribute to setting best practices that strengthen frontend engineering across the company. You’ll collaborate closely with product managers, UX designers, and backend engineers to turn ideas into well-engineered solutions — balancing product velocity with long-term maintainability. Key Responsibilities Drive architectural and technical direction for frontend solutions across product suite. Design and implement core features and shared components using React/React Native, and TypeScript. Evaluate and introduce new technologies, patterns, and tools that improve scalability, maintainability, and performance. Contribute to the design system and ensure consistent, accessible, and performant user experiences. Work closely with other engineers to review code, share knowledge, and improve development practices. Act as a technical mentor — helping others grow through feedback, guidance, and collaboration. Ensure strong build, deployment, and testing processes that support rapid, reliable delivery. Contribute, or lead, broader engineering initiatives such as CI/CD improvements, observability, and cross-product consistency. Key Requirements Extensive experience in building and maintaining large-scale frontend applications. Deep understanding of web architecture, component design, performance optimization, and responsive UI patterns. Strong hands-on experience with React and TypeScript. Solid knowledge of build tools, version control, and CI/CD pipelines. A pragmatic mindset — able to balance innovation with delivery. Excellent collaboration and communication skills. Passion for technical craftsmanship and for helping others grow through mentorship and example. Nice to Have Experience in designing intuitive user interfaces. Familiarity with cloud services and serverless architectures. Knowledge of accessibility standards in web development. Location: København Allocation: Full-time. Start date: ASAP End date: 3-6 months

Technology

Pretius

Frontend Developer

Mid

Hybrid

Warsaw, Poland

80 - 90 PLN

🏢 Summary: Frontend Developer role focused on building and enhancing a SaaS platform for digital handling of physical mail on the Swiss market. The position involves developing new features, contributing to architecture and interface design, and ensuring high quality, scalability, and performance in a high-traffic environment. Hybrid work model with strong emphasis on code quality and automated testing. 🗂️ Requirements: Minimum 2 years of experience in web application development, Technical degree in computer science, mathematics, physics or related field, Strong knowledge of JavaScript, Understanding of functional programming fundamentals, Commercial experience with Angular, Commercial experience with TypeScript, Experience with unit and E2E testing, Knowledge of English at minimum B2 level 📃 Skills: Angular, TypeScript, JavaScript, RxJS, HTML, SCSS, CSS, Redux, ESLint, Prettier, Stylelint, E2E, UnitTesting 🏢 Description: W Pretius poszukujemy Frontend Developera do projektu platformy obsługującej wysyłkę korespondencji fizycznej w sposób cyfrowy. Lokalizacja: Warszawa Rzymowskiego 31 Tryb pracy: hybryda (4 dni w tygodniu w biurze) Projekt / Rola Prace nad rozwojem nowych funkcjonalności w produkcie SaaS na rynku szwajcarskim Udział w definiowaniu wymagań/interfejsów/architektury Praca w zorganizowanym środowisku, bardzo duży nacisk na jakość, automatyzacje, skalowalność architektury, obsługę dużego ruchu Stack: Angular, TypeScript, RxJS — operatory (switchMap, mergeMap, takeUntil), HTML / SCSS — CSS, Redux pattern, Testy jednostkowe, E2E, Narzędzia jakości kodu — ESLint, Prettier, Stylelint Oczekiwania 2+ lat doświadczenia w budowaniu aplikacji webowych Wykształcenie na kierunku technicznym: informatyka, matematyka, fizyka itp. Znajomość JavaScript, podstaw programowania funkcyjnego Doświadczenie z Angular, TypeScript Zaangażowanie, chęć zdobywania i dzielenia się wiedzą Znajomość j. angielskiego na poziomie min. B2 Co oferujemy w Pretius? Stawiamy na długofalowe relacje oparte na uczciwych zasadach i rzetelności Dofinansowanie karty sportowej Multisport i opieki zdrowotnej Medicover Możliwość pracy w nowoczesnym biurze Imprezy integracyjne, szkolenia wewnętrzne, konferencje, certyfikacje