Frontend Developer

🏢 Summary: Senior Frontend Engineer role focused on owning and evolving the frontend architecture for global-scale digital draw games. The position involves building reusable client frameworks, implementing real-time event-driven systems, and developing interactive web-based game applications. You will guide external studios and ensure scalable, high-quality frontend implementations using modern tooling. 🗂️ Requirements: 5+ years of experience with React and TypeScript, Experience building complex frontend applications, Familiarity with HTML5 game technologies (e.g., Three.js or PlayCanvas), Experience developing interactive or real-time web applications, Experience with state-driven or event-driven frontend architectures, Understanding of asynchronous programming and real-time client-server communication, Experience with modern frontend tooling (e.g., Vite, CSS frameworks, automated testing), Proficiency with Git and collaborative version control workflows, Ability to translate UX and product requirements into technical implementations, Experience working with distributed teams or external development studios 📃 Skills: React, TypeScript, JavaScript, HTML5, Three.js, PlayCanvas, Vite, Tailwind, CSS, Git, REST, WebSockets, Testing 🏢 Description: 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.

🏢 Summary: Senior Front End Engineer role focused on building high-performance web applications for a fast-paced financial environment using modern frontend technologies and real-time data solutions. The position involves developing scalable interfaces, collaborating with cross-functional teams, and optimizing application performance and code quality. 🗂️ Requirements: 5+ years of Front End development experience, Strong knowledge of React, Strong knowledge of Next.js, Strong knowledge of TypeScript, Experience with WebSockets, Experience with AG Grid, Experience with Jest, Experience with React Testing Library, Experience with Playwright, Familiarity with Git, Familiarity with CI/CD, Experience with AI-assisted development tools, Fluent English 📃 Skills: React, Next.js, TypeScript, WebSockets, AG, Grid, Jest, Playwright, Git, CI/CD 🏢 Description: Senior Front End Engineer We are looking for an experienced Front End Engineer to build modern, high-performance web applications used in a fast-paced financial environment. You will work closely with backend engineers and business stakeholders to deliver scalable, user-friendly solutions with a strong focus on real-time data and application performance. Responsibilities Develop and maintain web applications using React, Next.js, and TypeScript. Build reusable UI components and real-time data interfaces. Collaborate with cross-functional teams to deliver business solutions. Optimize performance and ensure code quality through testing and best practices. Requirements 5+ years of experience in Front End development. Strong knowledge of React, Next.js, and TypeScript. Experience with WebSockets, AG Grid, and modern testing frameworks (Jest, React Testing Library, Playwright). Familiarity with Git, CI/CD, and modern development practices. Experience working with AI-assisted development tools. Fluent English.

🏢 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.

🏢 Summary: Frontend Developer role focused on building and evolving a large-scale, high-performance administrative web platform using React. The position emphasizes scalable architecture, code quality, automated testing, and integration with backend services. You will contribute to architectural decisions and maintain robust, maintainable frontend solutions in an enterprise environment. 🗂️ Requirements: 5+ years frontend development experience, Strong commercial experience with React, Expert knowledge of modern JavaScript (ES2024+), Advanced TypeScript proficiency, Experience integrating REST APIs, Hands-on experience with Webpack and Babel, Proficient with npm or yarn, Strong Git experience, Experience designing scalable frontend architectures, Experience with automated testing (unit, component, E2E) using Jest, React Testing Library, Cypress 📃 Skills: React, JavaScript, TypeScript, REST, Webpack, Babel, npm, yarn, Git, Jest, Cypress, GraphQL 🏢 Description: We are looking for an experienced Frontend Developer passionate about building scalable, high-performance user interfaces. In this role, you will contribute to the development and evolution of a large-scale administrative web platform, ensuring high code quality, maintainability, and performance. Key Requirements 5+ years of experience in frontend development, preferably in complex or enterprise-scale environments Strong commercial experience with React (state management, hooks, component lifecycle, application architecture) Expert knowledge of modern JavaScript (ES2024+) , including asynchronous programming and modular architecture Solid hands-on experience with TypeScript (advanced typing, generics, large-scale React integration) Experience integrating frontend applications with REST APIs (HTTP methods, authentication, data handling) Practical knowledge of build tools such as Webpack, Babel, npm/yarn Strong experience with Git (branching strategies, code reviews, conflict resolution) Experience designing and implementing scalable and high-performance frontend architectures Ability to write automated tests using Jest, React Testing Library, and Cypress Nice to Have Experience working with GraphQL in React-based applications Understanding and practical use of software design patterns Responsibilities Develop and enhance a complex React-based administrative platform Contribute to frontend architecture decisions and scalability improvements Maintain high standards of code quality (Clean Code, SOLID principles) Write and maintain unit, component, and end-to-end tests Collaborate with cross-functional teams in an agile delivery environment

🏢 Summary: Frontend Developer role focused on owning the full frontend experience, building engaging, high-performance, game-like interactions using a modern React stack. The position involves designing polished UI components, implementing real-time features, and optimizing animation and application performance. Strong emphasis on reusable architecture, frontend performance, and iGaming/gaming-driven product experiences. 🗂️ Requirements: Strong experience with React 18 and modern frontend ecosystem, Ability to design UI without predefined mockups or Figma files, Expertise in component architecture and reusable component design, Experience with responsive and mobile-first UI development, Strong skills in complex animations and animation performance optimization, Experience building real-time features with sockets, Ability to manage and optimize frontend state architecture, Experience improving code quality, structure, and performance, Experience with frontend testing practices, iGaming or gaming industry experience 📃 Skills: React, Vite, Redux, ReactRouter, Tailwind, FramerMotion, GSAP, Three.js, ReactThreeFiber, Socket.io, JavaScript, HTML, CSS 🏢 Description: We're looking for a frontend developer who can take full ownership of the frontend experience. You should be able to design polished components, build fast and playful interactions, and turn ideas into highly engaging product moments. Our stack is mainly React 18, Vite, Redux Toolkit, React Router, Tailwind, Framer Motion/GSAP, Three.js/React Three Fiber, socket.io , and a mix of charting, particles, sound, and animation libraries. - You should be strong at component architecture, responsive UI, animation performance, real-time experiences, and building in-house games like our current boxes, battles, dice, race, and jackpot flows. Ideally, you think like both a product designer and frontend engineer: making the app feel exciting, smooth, mobile-friendly, and reliable while owning everything from UI structure to frontend performance. - You could also help improve the codebase by making components more reusable, tightening design consistency, reducing duplicated UI logic, improving animation and bundle performance, adding stronger frontend testing, cleaning up large files, and gradually introducing clearer patterns around state, sockets, forms, and game UI architecture. It's really important that the candidate is a naturally great designer, who can design without references/pre made designs/figmas, along with being a really good animator. IMPORTANT: iGaming/Gaming experience is highly preferred. Do you have iGaming or Gaming experience? Please share it in your application message.

🏢 Summary: Frontend Developer role focused on building and maintaining scalable, high-quality user interfaces using TypeScript and React. The position involves close collaboration with designers, backend developers, and product stakeholders to deliver performant and maintainable user-facing features. The offer includes hybrid work, professional growth opportunities, and a comprehensive social benefits package. 🗂️ Requirements: Extensive experience building large, scalable frontend applications, Strong proficiency in TypeScript, Strong proficiency in React, Solid understanding of frontend architecture, Knowledge of design patterns, Ability to design complex user interfaces, Experience ensuring code scalability and performance optimization 📃 Skills: TypeScript, React, JavaScript, HTML, CSS 🏢 Description: We are looking for a frontend developer who is passionate about designing and building high-quality, intuitive user interfaces. In this role, you will collaborate closely with engineers, designers, and product stakeholders to deliver user-facing features across a range of products and internal tools. We value developers who actively contribute to shaping solutions - thinking through usability, performance, and long-term maintainability. You should feel comfortable discussing ideas, proposing improvements, and helping refine both technical and product decisions. In our company, frontend developers are expected to combine attention to detail, strong collaboration skills, and a proactive mindset. We value people who take ownership of their work, communicate clearly, and continuously look for ways to improve the user experience and the systems behind it. Key Responsibilities: Develop and maintain high-quality frontend applications using TypeScript and React . Design complex user interfaces. Ensure the application’s code is scalable, consistent, maintainable and optimised for performance. Collaborate closely with UX/UI designers Collaborate closely with backend developers and BA/product managers Take ownership of features and technical decisions, diving into details to ensure high-quality results. Requirements: A proactive problem solver and analytical thinker . Keen attention to detail and willingness to dive deep into technical challenges. Extensive experience in building large, consistent, maintainable and scalable frontend applications. Solid understanding of frontend architecture and design patterns. Strong proficiency in TypeScript and React . Additional information: Working for one of the top gambling companies in the world Opportunity to influence the quality of the products, improve process and implement your ideas Social package, including sport compensation & medical insurance Professional growth Free parking space (hybrid type of work- 3 days from the office, 2 days from home) Sport activities, parties, and team buildings

🏢 Summary: Frontend engineering role focused on building scalable, high-performance web applications using React and Next.js. The position involves developing modern user interfaces, collaborating with cross-functional teams, and contributing to shared component architecture and development practices. Suitable for mid-level to senior developers with strong web development experience. 🗂️ Requirements: 5+ years frontend/web development experience, Strong experience with React, Strong experience with TypeScript, Experience with Next.js or similar framework, Understanding of performance and scalability principles, Experience integrating APIs and backend services, Experience with Git version control, Experience with CI/CD pipelines 📃 Skills: React, Next.js, TypeScript, JavaScript, HTML, CSS, REST, Git, CICD, Jest, Playwright, Cypress, Cloud 🏢 Description: Web Frontend Engineer (React / Next.js) Do you want to help shape modern, scalable web applications used by thousands of businesses worldwide? Our client is looking for a skilled frontend developer with a strong focus on web technologies — especially React and Next.js — to help drive the development of high-quality, user-centric solutions. About the Role In this role, you will play a key part in building and evolving our clients web-based user interfaces. You’ll work closely with product managers, UX designers, and backend engineers to deliver performant, scalable, and intuitive solutions that create real value for customers. We are looking for developers across different seniority levels — both experienced profiles and developers with 5–10 years of experience who are eager to grow and take ownership. Key Responsibilities Develop and maintain modern web applications using React, Next.js, and TypeScript Build reusable components and scalable frontend architecture Collaborate closely with product and design teams to translate requirements into high-quality user experiences Ensure performance, accessibility, and responsiveness across applications Contribute to and evolve shared component libraries and design systems Participate in code reviews and contribute to improving development practices Work with CI/CD pipelines and modern development workflows Stay updated on frontend trends, tools, and best practices Key Requirements Solid experience with React and TypeScript in a web context Experience with Next.js or similar frameworks is highly preferred 5+ years of experience in frontend/web development (we are open to mid-level and senior profiles) Strong understanding of modern web development principles (performance, scalability, component architecture) Experience working with APIs and integrating backend services Familiarity with version control (Git) and CI/CD pipelines A collaborative mindset and strong communication skills Motivation to learn, improve, and contribute to a strong engineering culture Nice to Have Experience with design systems and component libraries Knowledge of testing frameworks (e.g., Jest, Playwright, Cypress) Experience with performance optimization and monitoring Exposure to cloud environments and modern deployment setups

🏢 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

🏢 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

🏢 Summary: Senior/Lead Frontend Developer role focused on designing and developing modern web applications using Angular (preferred) or React. The position involves owning frontend architecture, making technical decisions, and ensuring high code quality and best practices. You will collaborate closely with backend and product teams to deliver scalable and high-performance solutions. 🗂️ Requirements: Strong commercial experience as Senior Frontend Developer, Proficiency in Angular or React, Very good knowledge of JavaScript and TypeScript, Very good knowledge of HTML5 and CSS, Experience in state management, Experience in component architecture design, Knowledge of performance optimization, Knowledge of WCAG and accessibility standards, Experience in frontend-backend integration via API, Experience with CI/CD pipelines, Experience with code review and automated testing, Experience in designing scalable and modular frontend architectures 📃 Skills: Angular, React, JavaScript, TypeScript, HTML5, CSS, API, CI/CD, WCAG, Testing, Performance, StateManagement, ComponentArchitecture, CodeReview 🏢 Description: Poszukujemy Frontend Developera (Senior / Lead) z doświadczeniem w Angular lub React, który wesprze nasz zespół w tworzeniu i rozwijaniu nowoczesnych aplikacji webowych. Szukamy osoby, która nie tylko świetnie odnajduje się w kodzie, ale również chce mieć realny wpływ na decyzje techniczne, architekturę oraz kierunek rozwoju front-endu. Jeśli lubisz dzielić się wiedzą, angażować się w dyskusje i podejmować wyzwania - ta rola jest dla Ciebie. Pracując na tym stanowisku będziesz: Odpowiadać za architekturę oraz rozwój warstwy front-endowej w projekcie Brać aktywny udział w dyskusjach technicznych i podejmowaniu decyzji Wspierać i mentorować innych programistów Dbać o wysoką jakość kodu, jego strukturę oraz stosowanie najlepszych praktyk Współpracować z zespołami back-end, architektury oraz produktu Uczestniczyć w uzgodnieniach technicznych i wspierać spójność całego rozwiązania Szukamy właśnie Ciebie, jeśli: Posiadasz solidne doświadczenie jako Frontend Developer (Senior) Pracujesz z nowoczesnymi frameworkami (Angular - preferowany lub React) Bardzo dobrze znasz JavaScript / TypeScript, HTML5 oraz CSS Masz doświadczenie w zarządzaniu stanem i projektowaniu architektury komponentów Rozumiesz aspekty wydajności, dostępności (WCAG) i użyteczności aplikacji Potrafisz podejmować decyzje techniczne i proponować rozwiązania Dobrze rozumiesz współpracę front-endu z back-endem (API, kontrakty) Znasz nowoczesne procesy wytwarzania oprogramowania (CI/CD, code review, testy) Jesteś samodzielny/a, proaktywny/a i dobrze zorganizowany/a Masz doświadczenie w mentoringu lub chcesz rozwijać się w kierunku liderskim Posiadasz znajomość języka angielskiego na poziomie B2/C1 Idealnie, jeśli dodatkowo: Masz doświadczenie w projektowaniu skalowalnych, modułowych architektur front-endowych Czujesz się komfortowo w roli lidera technicznego lub chcesz ją pełnić Masz doświadczenie w koordynacji technicznej lub pracy przekrojowej między zespołami Warto do nas dołączyć, bo: Będziesz mieć realny wpływ na kierunek rozwoju projektu i architektury Pracujesz w doświadczonym zespole, który ceni współpracę i dzielenie się wiedzą Używamy nowoczesnego stosu technologicznego i zwinnych metod pracy Masz przestrzeń do rozwoju, mentoringu i podejmowania inicjatywy Tworzymy środowisko, w którym liczy się jakość, odpowiedzialność i dobra komunikacja