Senior Frontend Developer

🏢 Summary: Front End Developer role within an agile feature team, focused on building and enhancing complex gaming product features. The position involves developing modern front-end solutions, contributing to migration from legacy systems, and improving performance and infrastructure. The role requires strong expertise in Angular/React ecosystems and modern front-end tooling. 🗂️ Requirements: 5+ years experience as Front-End Developer, Proficiency in AngularJS or Angular 2+ or React, Strong knowledge of JavaScript ES6, Strong knowledge of CSS3 and HTML5, Experience with responsive design, Experience handling browser compatibility issues (Mobile and Web), Strong debugging skills, Experience using AI tools to build and improve React components and integrations, Ability to develop complex front-end components independently, Experience with Webpack, Babel, and Git, Bachelor’s degree in Computer Science, Engineering or related field 📃 Skills: AngularJS, Angular, React, JavaScript, ES6, CSS3, HTML5, Webpack, Babel, Git, AI, Debugging, CI, ResponsiveDesign 🏢 Description: At Aristocrat Interactive, we are devoted to crafting innovative gaming experiences that captivate and entertain millions around the world. We are searching for a Front End Developer to be part of our multi-functional agile team. As a Software Engineer, you will directly impact the next-generation of our product. You will play an active role in the design and development of new features and improvements to our existing product, positively impacting our top customers. What You'll Do Work as a Front-end Developer, using powerful technologies, methods and practices Be part of a Feature Team in the client department which engages in develop complex, yet exciting, features for new product Develop interesting features with React, JS ES6, Git, Webpack with Continues Integration process Taking part in migrating our legacy product into a modern, technologically sophisticated version Maintain and refactor our core application Improve performance and development infrastructure Work with great developers in a dynamic environment What We're Looking For 5+ years as a Front-End developer with any major framework/library: Angular 2+ /React (Primary work is with AngularJS) Understanding of CSS3, HTML5 and responsive design concepts Experience with browser porting issues — Mobile and Web Excellent debugging skills to identify problems with software builds, deployments or related issues and driving the problem to a permanent resolution Experience using agentic AI to build and improve React components, state flows, API integration, UI tests, accessibility, and secure client-side behavior Ability to craft and develop complex components independently Effectively connect with team members, clients, and other partners in English Experience with development tools like Webpack, Babel, Git, etc. Understanding of any Mobile Development (ionic or flutter or native) - an advantage Experience with agile methodologies and project lifecycle - An Advantage Bachelor’s degree or equivalent experience in Computer Science, Engineering or related technical field Responsible, initiator, team-player and great communication and interpersonal skills

🏢 Summary: Leadership role focused on designing and delivering a scalable React Native SDK and mobile applications for iOS and Android. The position combines hands-on development with technical direction, mentoring, and cross-functional collaboration to build high-quality, high-performance mobile products. Work is conducted in an agile environment with hybrid presence in Gdansk or Krakow. 🗂️ Requirements: 5+ years experience developing and deploying mobile apps with React Native, Experience leading and mentoring development teams, Strong knowledge of native Android or iOS architecture, Experience with full mobile development lifecycle, At least one successfully released product as team lead, Proficiency in JavaScript and TypeScript, Experience with Git version control, Experience working in Agile environments 📃 Skills: React, ReactNative, JavaScript, TypeScript, iOS, Android, Git, Agile, SDK 🏢 Description: Join Aristocrat as a React Native Lead Developer and become part of a global leader in gaming and entertainment, where technology and creativity come together to deliver world-class player experiences. With thousands of team members across the globe, we are united by a shared mission to bring joy to life through the power of play. In this role, you’ll lead a dedicated, distributed team working on innovative mobile solutions, contributing to scalable products that reach players worldwide. You’ll collaborate across teams while helping shape technical direction and drive impactful digital initiatives. Work mode: hybrid – 3 days per week from the Wave Office in Gdansk or Unity Office in Krakow. What You'll Do Lead the design and development of an SDK and mobile applications in React Native, ensuring alignment with overall product strategy. Participate in agile development processes, including sprint planning, stand-ups, and retrospectives. Establish, enforce and drive best practices in programming, testing, and deployment, ensuring high-quality work and alignment to industry standards. Collaborate with multi-functional teams, including native platform engineers (iOS/Android), product managers, and designers, to define technical requirements and deliver end-to-end solutions. Produce documents and diagrams to communicate your designs and processes effectively with the wider development and leadership teams. Provide regular feedback and support to team members, helping them develop their skills and advance their careers within the organization. Articulate technical concepts and project updates to partners, ensuring transparency and alignment with business goals. Fine-tune application performance, fix bottlenecks, and guarantee responsiveness across diverse platforms. Mentor and guide a team of developers, fostering a collaborative environment that encourages innovation and professional growth. What We're Looking For Demonstrated track record of 5 years of creating and deploying mobile apps using React Native, primarily for iOS and Android. Proven experience leading a development team, with strong mentoring and coaching skills. Strong knowledge of architecture and implementation of native Android or/and iOS apps, experience with full mobile development life cycle. At least one successfully released product while managing a team of developers. Profound expertise in JavaScript, TypeScript, and related frameworks and libraries. Familiarity with Git for version control and experience working in agile development environments. Adept problem solver with a history of delivering quality code and solutions. Why Product Madness? As part of the Aristocrat family, we share their mission of bringing joy to life through the power of play, with a world-class team who creates top-grossing, leading titles in the social casino genre, including Heart of Vegas, Lightning Link, Cashman Casino. With 800 team members across the globe, Product Madness is headquartered in London, with offices in Barcelona, Gdańsk, Lviv, Montreal and a remote team spanning the USA, making us a truly global powerhouse. We live by our People First principle. Regardless of where, when, or how they work, our team members have opportunities to elevate their careers, and grow alongside us. We take pride in fostering an inclusive culture, where our people are encouraged to be their very best, every day. But don’t just take our word for it. In 2024, we made the Global Inspiring Workplace Awards list, and won a bronze award at the Stevies for Great Employers in the ‘Employer of the Year - Media and Entertainment’ category.

🏢 Summary: Senior leadership role responsible for defining and scaling QA strategy across multiple teams, driving full-stack test automation, CI/CD quality gates, and risk-based release governance. The position combines hands-on test architecture expertise with mentoring and cross-functional collaboration to improve release confidence across backend and client systems. Hybrid work model based in Gdansk or Krakow. 🗂️ Requirements: 7+ years QA experience, 3+ years leading QA across multiple teams, Hands-on automation and test architecture experience, Deep knowledge of full-stack testing, Experience with CI/CD pipeline integration, Implementation of risk-based testing, Experience with release governance, Experience with contract testing and service virtualization, Experience in cloud-based environments 📃 Skills: Selenium, Playwright, Cypress, REST, Postman, CI/CD, API, UI, E2E, Cloud, Telemetry, Observability 🏢 Description: At Product Madness, we bring happiness to millions of players by harnessing the happiness of play. As a Principal QA Lead , you will build and scale quality across multiple teams, embedding robust full-stack testing strategies and strengthening release confidence across backend services and client experiences. This is a senior leadership role combining strategy, people leadership, and technical authority. You will influence how quality operates at scale — driving automation excellence, CI/CD integration, and risk-based release governance across domains. Work mode: hybrid – 3 days per week from the Wave Office in Gdansk or Unity Office in Krakow. What You'll Do Define and drive QA strategy aligned with product and engineering roadmaps Architect scalable automation frameworks across API, UI, integration, and end-to-end layers (e.g., Selenium, Playwright, Cypress, REST Assured, Postman or similar tools) Strengthen CI/CD quality gates, improve test stability, reduce flakiness, and enhance release readiness practices Implement contract testing, service virtualization, and modern test data strategies in cloud-based environments Leverage observability and telemetry signals to improve quality insights and incident prevention Establish risk-based testing standards and trusted quality indicators used in leadership decision-making Lead root-cause analysis for high-impact incidents and translate findings into systemic improvements Mentor QA Leads and Senior QA Engineers, shaping standards, accountability, and engineering culture Partner closely with Engineering, Product, and Build leadership to embed quality ownership end-to-end What We're Looking For 7+ years of professional QA experience, including hands-on automation and test architecture 3+ years leading QA across multiple squads, streams, or domains Deep expertise in full-stack testing (backend services, front-end interface, end-to-end connectivity) and CI/CD pipeline integration Strong experience implementing risk-based testing and release governance for complex systems Proven ability to influence senior multi-functional collaborators with data-driven recommendations A pragmatic, outcome-focused approach — building scalable systems without unnecessary bureaucracy Nice to have: experience in gaming or live-service products, QA transformation initiatives, or scaling quality practices in growing organisations. Why Aristocrat? Aristocrat is a world leader in gaming content and technology, and a top-tier publisher of free-to-play mobile games. We deliver great performance for our B2B customers and bring joy to the lives of the millions of people who love to play our casino and mobile games. And while we focus on fun, we never forget our responsibilities. We strive to lead the way in responsible gameplay, and to lift the bar in company governance, employee wellbeing and sustainability. We’re a diverse business united by shared values and an inspiring mission to bring joy to life through the power of play. We aim to create an environment where individual differences are valued, and all employees have the opportunity to realize their potential. We welcome and encourage applications from all people regardless of age, gender, race, ethnicity, cultural background, disability status or LGBTQ+ identity. EEO M/F/D/V World Leader in Gaming Entertainment Robust benefits package Global career opportunities Our Values All about the Player Talent Unleashed Collective Brilliance Good Business Good Citizen Travel Expectations None Additional Information At this time, we are unable to sponsor work visas for this position. Candidates must be authorized to work in the job posting location for this position on a full-time basis without the need for current or future visa sponsorship.

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

🏢 Summary: The role involves developing and optimizing mobile games using Unity, implementing new features, and improving performance to deliver high‑quality player experiences. You will collaborate with cross‑functional teams to enhance technical pipelines and maintain strong coding standards in a live mobile game environment. 🗂️ Requirements: Professional experience in mobile game development, Proficiency in Unity 3D (UI, rendering, asset bundles), Strong knowledge of C#, Experience with performance optimization and profiling tools, Understanding of architectural patterns, Knowledge of data structures, Experience with client-server architecture, Ability to follow good coding practices 📃 Skills: Unity, C#, UI, Rendering, AssetBundles, Profiling, Optimization, Architecture, DataStructures, CI/CD, ClientServer 🏢 Description: HYBRID WORK MODEL: 3 DAYS PER WEEK (60%) IN OUR WROCLAW OFFICE AND 2 DAYS REMOTE About us Hi, we are Ten Square Games , and we live games! No, not a typo - but a level up from loving! We are on a mission of giving players excellent outdoor experiences on their mobiles. With global hits, such as Fishing Clash, we know how to make the best of technology, fun, and fair play. With 77 million registered players in 2024 and 300+ people on board, we keep growing and learning, having the insatiable hunger for the next success. If you also like to explore the unknown and know how to own it, we want to work with you! What is this job all about? We’re seeking a talented Unity Developer (f/m/d) . You will bring new ideas to life and make a real impact in mobile gaming . You’ll be part of a passionate team, building exciting features, fine‑tuning performance, and keeping the player experience top‑tier. If creating games that millions enjoy excites you, this is the place to make it happen! What will you be doing? Implementing new game features; Collaborating with QA, Artists, and Designers; Improving technical pipelines; Identifying and fixing performance bottlenecks; Ensuring high standards and good coding practices. What are we looking for? Professional experience with mobile game development; Knowledge of Unity 3D, including UI, rendering, and asset bundles; Knowledge of C#; Good communication skills and being a team player; Knowledge of optimization techniques and experience with profiling tools; Understanding of common architectural patterns and knowledge of good coding practices; At least a basic understanding of data structures. Amaze us with: Hobby projects that can show your interests in software development; Tools development experience; Game prototyping experience; Experience with CI / CD pipelines; Participation in game jams; Experience in working with a client-server architecture. Please submit your CV in English. Perks for interns: GREAT ENVIRONMENT: Continuous mentorship throughout the entire internship; Tailored onboarding process; Opportunities to work independently on tasks and see your impact on a live product; Autonomy mode and freedom of making partnership decisions. PERSONAL DEVELOPMENT: Safe environment and setting that boost your EXP points and skills; Opportunity to learn from top-notch gaming industry experts; Communities of practice and educational books of your choice; A chance to network with gaming professionals and other passionate interns. COMFORT: Contract of mandate; Working hardware matters – win or Mac – take your pick; Attractive remuneration; Easy accessible modern office in the center of Wroclaw. CARE: Free breakfasts, lunch days, fresh veggies & fruits, and refreshments in the office; In-office massage; Participation in all team and company events. Please submit your CV in English.

🏢 Summary: Office-based Frontend Developer role focused on building responsive and scalable web applications for an online casino platform using modern and legacy frontend technologies. The position involves close collaboration with backend and design teams to deliver high-performance, user-friendly interfaces. B2B contract with competitive salary and immediate start. 🗂️ Requirements: Extensive experience with React, NextJS and jQuery, Strong knowledge of TypeScript and Vanilla JavaScript, Experience with Webpack or Vite, Experience with state management libraries (Redux or MobX), Experience integrating RESTful APIs and WebSockets, Experience building scalable, high-performance frontend applications, Knowledge of Git and CI/CD pipelines, Experience with automated testing frameworks, Fluent English (B2+ level) 📃 Skills: React, NextJS, jQuery, JavaScript, TypeScript, Redux, MobX, REST, WebSockets, Webpack, Vite, Git, CI/CD 🏢 Description: Employer: International cassino games studio Location: Office-based position in central Warsaw Salary: up to 6600 EUR net Cooperation model: B2B Start date: ASAP Recruitment process: 2 online interviews and recruitment task Technology stack: React, JS, TypeScript, Redus, RestfulAPI, NextJS Your role is to: -> Develop responsive and scalable frontend applications using Jquery, NextJS, React; -> Collaborate with backend engineers to define and integrate APIs and services that provide smooth user experience; -> Work with Webpack and or Vite for efficient bundling and build processes, optimizing the delivery of frontend assets; -> Work with Typescript and Vanilla JS; -> Ensure the platform adheres to high standards of usability and performance; -> Work closely with designers to ensure UI/UX designs are fully implemented and optimized for the user; Your skills and experiences: -> Extensive experience with modern and legacy frontend frameworks such as Jquery, NextJS, React; -> Expertise with Webpack/Vite for module bundling and build optimizations; -> Strong knowledge of TypeScript and its use in frontend development; -> Proven experience in building scalable, high-performance applications that provide smooth user experience; -> Experience with state management libraries such as Redux or MobX or others; -> Familiarity with RESTful API integration and WebSockets for real-time communication; -> Knowledge of version control systems (e.g., Git), CI/CD pipelines, and automated testing frameworks; -> Excellent communication and collaboration skills, with the ability to bridge the gap between design and development; -> Analytical mindset with a focus on performance optimization and solving complex problems; -> Ability to manage multiple tasks and prioritize effectively in a fast-paced environment; -> Fluent English - at least B2+ level; If interested, please apply safely through this portal (application rules are in accordance with GDPR). Employment agency Nr 17138.

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

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

🏢 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

🏢 Summary: Senior Frontend React Developer role focused on building and optimizing advanced UI applications with generative AI features in an enterprise environment. The position involves collaborating with cross-functional teams to deliver high-quality, user-centric solutions and integrating CI/CD and AI operational workflows. Hybrid work model based in Warsaw. 🗂️ Requirements: 4+ years of experience in React development, 4+ years of experience in JavaScript development, Strong knowledge of DevOps practices, Hands-on experience with Jira, Hands-on experience with GitLab, Hands-on experience with OpenShift, Proficiency in Linux, Experience with unit testing, Experience with system testing, Fluent Polish, Fluent English, Legal right to work in Europe 📃 Skills: React, JavaScript, DevOps, Jira, GitLab, OpenShift, Linux, CI/CD, Agile, Scrum, AI, Testing 🏢 Description: Empower innovation at the forefront of UI and AI technology — craft impactful user experiences that shape the future! Warszawa-based opportunity with hybrid work model (up to 2 remote days per week). As a Senior Frontend React Developer , you will be working for our client, a leader in enterprise software solutions, focusing on delivering cutting-edge UI and generative AI services. Join a collaborative, agile team committed to creating high-quality, user-centric applications that drive digital transformation and innovation. Your main responsibilities: Develop and optimize complex frontend applications using React and JavaScript, ensuring seamless user experiences Collaborate with cross-functional teams including data scientists and DevOps to deliver innovative UI solutions, including generative AI features Confirm technical designs, troubleshoot issues, and implement best practices for code quality and performance Contribute to the integration of CI/CD pipelines and operational workflows involving AI services Participate actively in Agile/Scrum ceremonies, promoting effective teamwork and continuous improvement You're ideal for this role if you have: 4+ years of proven experience in React and JavaScript development Strong understanding of DevOps practices with hands-on experience using Jira, GitLab, and OpenShift Proficiency in Linux OS and performing unit and system testing Excellent command of English, both written and spoken Ability to independently deliver high-quality code and confirm technical designs It is a strong plus if you have: (optional) Experience working with financial data, including Market Data and Reference Data Full-stack development expertise Knowledge of CI/CD pipelines and generative AI operational workflows Language Required for the role: Fluent in Polish and English Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.