Senior Frontend Developer (UI/Javascript)

🏢 Summary: The offer is for an experienced Frontend Developer to build and optimize modern web applications using React.js and TypeScript in an Agile, international environment. The role focuses on developing new features, improving performance, resolving production issues, and delivering stable, scalable solutions. You will collaborate with cross-functional teams and contribute to continuous technical improvements. 🗂️ Requirements: Strong commercial experience in frontend development, Expert knowledge of React.js, Expert knowledge of TypeScript, Solid understanding of JavaScript fundamentals, Experience with E2E testing frameworks, Experience with CI/CD pipelines, Experience with version control systems, Proven debugging and performance optimization skills, Ability to work in distributed environment, Fluent English B2+/C1 📃 Skills: React, TypeScript, JavaScript, Cypress, Playwright, CI/CD, Git, HTML, CSS, Agile 🏢 Description: We are looking for an experienced Frontend Developer to join our international team. In this role, you will develop and optimize modern web applications, contribute to technical improvements, and help deliver stable, high-performance solutions in a collaborative Agile environment. Your responsibilities: Develop and maintain modern web applications using React.js and TypeScript Build new features and improve existing functionalities for the platform Optimize application performance and troubleshoot technical issues Debug and resolve production incidents to ensure platform stability Participate in technical discussions, code reviews, and continuous improvement initiatives Collaborate closely with cross-functional teams, including Product, Design, QA, and mobile development teams Work with our JavaScript/TypeScript-based UI framework designed for TV-box environments Ensure delivery of stable, scalable, and high-quality code following best engineering practices We are looking for you, if you have: Strong commercial experience in frontend development Expert-level knowledge of React.js Expert-level knowledge of TypeScript Solid understanding of JavaScript fundamentals Experience with E2E testing frameworks such as Cypress, Playwright, or similar Experience working with CI/CD pipelines and version control systems Proven experience in debugging, troubleshooting, and performance optimization Ability to work independently in a distributed environment Fluent English (minimum B2+/C1 level) Nice to have: Experience developing applications for Smart TV platforms Experience working on streaming, video, media, or entertainment-related products We offer: Participation in interesting and demanding projects. Flexible working hours. A great, non-corporate atmosphere. Possibility to work remote or hybrid (2 days per week from the office). Opportunities for development and promotion. Attractive package of benefits. We reserve the right to contact the selected candidates.

🏢 Summary: Frontend Developer role focused on building and maintaining modern web applications using Angular within an agile environment. The position emphasizes creating scalable user interfaces, managing frontend tooling, and ensuring application quality through collaboration and code reviews. 🗂️ Requirements: Strong experience with Angular, Very good knowledge of TypeScript, Very good knowledge of JavaScript, Hands-on experience with Webpack, Hands-on experience with Node.js, Experience with npm and dependency management, Familiarity with version control systems, Strong debugging skills, Experience in agile development environments 📃 Skills: Angular, TypeScript, JavaScript, Webpack, Node.js, npm, Git 🏢 Description: We are looking for a Frontend Developer to join a development team responsible for building and maintaining modern web applications. The role focuses on delivering clean, scalable user interfaces and contributing to overall application quality within an agile setup. Responsibilities: Develop and maintain frontend applications using Angular Build user-facing features with TypeScript and JavaScript Configure and work with build tools such as Webpack and Node.js Manage npm packages, dependencies, and versioning Debug, troubleshoot, and resolve frontend issues Collaborate with the team using version control systems and code reviews Participate in agile ceremonies and contribute to continuous improvement Requirements: Strong experience with Angular framework Very good knowledge of TypeScript and JavaScript Hands-on experience with Webpack, Node.js, and frontend build tools Experience with npm packages and dependency management Familiarity with version control systems Strong debugging and problem-solving skills Experience working in agile development environments

🏢 Summary: Frontend Developer role focused on building scalable, high-performance, and user-centric web applications for global travel platforms. The position involves developing new features, maintaining existing applications, and collaborating closely with designers and backend teams to deliver intuitive user experiences. You will contribute to frontend architecture, code quality, and continuous improvement in an Agile environment. 🗂️ Requirements: Minimum 3 years commercial experience as Frontend Developer, Strong knowledge of JavaScript, Professional experience with React, Professional experience with TypeScript, Experience with Vue.js, Experience with CMS platforms (non-WordPress), Experience with testing frameworks (unit, integration, end-to-end), Understanding of CI/CD processes, Ability to write clean, testable, maintainable code, Very good command of English 📃 Skills: JavaScript, TypeScript, React, Vue, CMS, ReactHookForm, Webpack, Babel, Vite, Rspack, CI/CD, Next.js, Node.js, AWS 🏢 Description: We are looking for a Frontend Developer to join our team and help build modern, scalable, and user-centric digital products that support our global travel platforms. In this role, you will work closely with designers, backend developers, Product Owners, and business stakeholders to deliver intuitive and high-performing user experiences used by customers around the world. You will have a direct impact on the quality, usability, and evolution of our products. Your responsibilities Develop new user-facing features and maintain existing applications Write clean, maintainable, and efficient code following best practices Ensure high performance, scalability, and responsiveness across web applications Validate and process user input before sending data to backend services Collaborate with designers, developers, and business stakeholders to translate requirements into technical solutions Bridge the gap between design and technical implementation Ensure consistency, usability, accessibility, and responsiveness across digital products Contribute to the continuous improvement of frontend architecture, standards, and development practices Participate in code reviews and knowledge-sharing initiatives Troubleshoot, debug, and resolve application issues Our requirements Minimum 3 years of commercial experience as a Frontend Developer Strong knowledge of JavaScript and modern frontend development practices Professional experience with React and TypeScript Experience working with Vue.js Experience with CMS platforms (other than WordPress) Familiarity with tools such as React Hook Form, Webpack, Babel, Vite, or Rspack Experience with testing frameworks and different testing approaches (unit, integration, end-to-end) Understanding of CI/CD processes and development workflows Ability to write clean, testable, and maintainable code Strong problem-solving skills and attention to detail Good communication skills and very good command of English Nice to have Experience with Next.js Knowledge of Node.js Knowledge of AWS services and cloud-based solutions How we work Clean Code principles Design patterns and software engineering best practices Code reviews and knowledge sharing Static code analysis Continuous Integration and Continuous Deployment (CI/CD) Agile and collaborative development environment What we offer Hybrid work model (1–2 days per week in our Katowice office) Opportunity to work on international, large-scale projects used by customers worldwide Attractive remuneration paid in EUR Flexible working hours Individual learning and development budget Partially or fully funded training and certifications English lessons Mentoring and support from experienced technical leaders Participation in conferences in Poland and abroad A culture focused on collaboration, knowledge sharing, and continuous improvement Space to innovate and bring your own ideas to life Support for IT community initiatives and professional networking Long-term cooperation in a stable, growing international organization

🏢 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: Lead Frontend Developer role focused on building and improving modern web applications while setting technical direction and leading a development team. The position involves designing intuitive interfaces, integrating with backend systems, and driving best practices in code quality and CI/CD processes. 🗂️ Requirements: 5+ years of experience with JavaScript, Experience leading development teams, Proficiency with Angular, Experience with Node.js, Experience with Hibernate and Oracle DB, Strong knowledge of SQL, Experience with Cucumber, Experience with IntelliJ, Experience with Splunk and JMeter, Experience with Git, Jenkins, and Maven, Experience integrating CI/CD pipelines, Understanding of SOLID principles 📃 Skills: JavaScript, Angular, Node.js, Hibernate, Oracle, SQL, Cucumber, IntelliJ, Splunk, JMeter, Git, Jenkins, Maven, CI/CD, SOLID 🏢 Description: Currently, we are looking for a Lead Frontend Developer , who has proven experience developing web applications using all front-end technologies. Responsibilities: Creating new, better and more functional, and intuitive interfaces for services Helping to set technical direction, realizing your ideas in code, and collaborating with other developers, teams, and stakeholders Inventing and improving services and processes Required skills and qualifications: Experience in leading the team. The Lead Frontend must know how to build a productive team to deliver a brighter future At least 5 + years experience in developing software using JavaScript Fluency working with Angular, Node.js, Hibernate, Oracle DB, SQL, Cucumber, IntelliJ, Splunk, JMeter Experience integrating codebase with CI/CD processes using Git, Jenkins, Maven Strong communication, organizational, team and time-management skills Proficient understanding and knowledge of SOLID principles Fluent in English, written and spoken Nice to have: General understanding of Java programming language Experience with prepared and executed various tests: automation, performance, unit, integration We offer: Fully remote work- not only during the pandemic - related restrictions Long-term cooperation based on b2b contact or an employment contract The possibility of developing your competencies, working in new technologies and creating an innovative system from the very beginning Work in an international environment - the possibility of using English in everyday work A wide package of benefits (private healthcare, life insurance, sport card, free English lessons, internal trainings and workshops, external trainings, integration events)

🏢 Summary: The role is for a Senior Frontend Developer responsible for designing, developing, testing, deploying, and maintaining Angular-based frontend systems used in production across multiple European countries. The position involves working with modern frontend technologies, integrating with APIs, and collaborating in Agile teams to deliver new features and maintain high-quality applications. 🗂️ Requirements: 5+ years of production experience with Angular, Strong expertise in TypeScript, Experience with reactive programming using RxJS, Understanding of software engineering principles and testing practices, Experience with REST or GraphQL APIs, Familiarity with PostgreSQL or DynamoDB, Experience maintaining production systems, Degree in Computer Science, Experience working with Agile methodologies (SCRUM or Kanban), Proficiency in English 📃 Skills: Angular, TypeScript, JavaScript, RxJS, HTML, CSS, Cypress, Playwright, Node.js, REST, GraphQL, AWS, Terraform, PostgreSQL, DynamoDB 🏢 Description: About the role You will need to be an expert in frontend development with a thorough understanding of the technologies involved. Strong frontend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: Angular, TypeScript, JavaScript, RxJS, HTML, CSS, Cypress, Playwright, Node.js, REST/GraphQL APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a frontend system written in Angular & TypeScript Deploying and maintaining frontend / backend applications Maintaining system on production used by consumers from several European countries Debugging issues Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Required qualifications: 5+ years of production software development experience in Angular Skilled within reactive programming patterns (RxJS) Strong understanding of software engineering principles, testing, design systems Solid hands-on experience in TypeScript Know-how of REST/GraphQL APIs Familiarity with DBMS like PostgreSQL, DynamoDB AI Tooling usage Computer Science degree Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to backend development (can be in TypeScript) Some experience or interest in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

🏢 Summary: Senior Frontend Developer role focused on designing, building, testing, deploying, and maintaining a React and TypeScript-based frontend system integrated with backend services and mobile apps. The position involves frontend architecture design, production support, and working within Agile teams to deliver scalable solutions used across multiple countries. 🗂️ Requirements: 5+ years of production experience with React, Strong hands-on experience with TypeScript, Strong understanding of software engineering principles, Experience with testing and design systems, Knowledge of REST APIs, Familiarity with DBMS such as PostgreSQL or DynamoDB, Degree in Computer Science, Experience working with Agile methodologies (SCRUM or Kanban), Experience using AI tooling 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, REST, PostgreSQL, DynamoDB, Testing, DesignSystems, Agile, SCRUM, Kanban, AI 🏢 Description: About the role You will need to be an expert in frontend development with a thorough understanding of the technologies involved. Strong frontend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a frontend system written in React & TypeScript Design frontend software architecture with connection to backend services and mobile apps Deploying and maintaining frontend / backend applications Maintaining system on production used by consumers from several European countries Debugging issues Scoping and assessing the complexity of features Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Recruiting and mentoring new team members Required qualifications: 5+ years of production software development experience in React Strong understanding of software engineering principles, testing, design systems Solid hands-on experience in TypeScript Know-how of REST APIs Familiarity with DBMS like PostgreSQL, DynamoDB Computer Science degree AI Tooling usage Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to backend development (can be in TypeScript) Some experience or interest in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

🏢 Summary: Senior Frontend Developer role focused on building, maintaining, and optimizing scalable web applications using modern frontend technologies. The position involves designing web architecture, integrating APIs, and supporting CI/CD processes to deliver high-performance user experiences. The role requires strong experience in React-based ecosystems and modern DevOps practices. 🗂️ Requirements: Minimum 5 years of experience in modern frontend technologies, Strong experience with ReactJS and NextJS, Proficiency in HTML, CSS, TypeScript, and JavaScript, Experience designing scalable web architecture, Solid knowledge of REST APIs, Experience with NodeJS and package managers, Experience with CI/CD pipelines and GitHub workflows, Proficient in Git version control, Experience creating technical documentation (e.g., Confluence), English proficiency at B2 level or higher 📃 Skills: ReactJS, NextJS, HTML, CSS, TypeScript, JavaScript, REST, NodeJS, CI/CD, GitHub, Git, Confluence, Azure, GraphQL, HeadlessCMS 🏢 Description: We are seeking a highly skilled and motivated Senior Frontend Developer to join our team. The ideal candidate will have a strong background in front-end coding, troubleshooting, and optimizing web applications. You will play a key role in developing and maintaining high-quality, scalable, and performant web solutions using modern technologies. This position requires a proactive individual with excellent problem-solving skills and a passion for delivering exceptional user experiences. Must-Have Qualifications to be successful for the role: Technical Skills: Develop and maintain web applications using ReactJS / NextJS . Implement responsive designs using HTML, CSS, Typescript, and JavaScript . Create and maintain technical documentation using tools like Confluence. Design and implement scalable web architecture and artifacts. Solid knowledge of REST APIs . Experience with NodeJS and package managers. Utilize DevOps skills, including CI/CD pipelines , GitHub workflows , and actions . Manage version control using GIT effectively. Soft Skills: Strong problem-solving and troubleshooting abilities. Excellent communication and collaboration skills to work effectively in a team environment. Attention to detail and a proactive approach to identifying and resolving issues. Ability to adapt to new technologies and learn quickly. Experience: Minimum 5 years of experience in modern Frontend technologies. English proficiency should be at least B2 level. Nice-to-Have Qualifications: Experience with Azure or other cloud platforms. Experience with GraphQL. Experience with Headless CMS (Content Management System) . Optimize web performance, focusing on Core Web Vitals. Other Details: Work model: 2 days per week in the office and 3 days at home. We offer a flexible work schedule that includes 12 additional Compensation Days besides regular holidays. Note that specific work hours may vary between winter and summer schedules, and the candidate will be required to submit their CV in English.

🏢 Summary: Frontend Developer role focused on designing, developing, testing, deploying, and maintaining React and TypeScript applications used across multiple European markets. The position involves working with modern frontend technologies, integrating with REST/GraphQL APIs, and supporting production systems. The role requires strong software engineering expertise and collaboration within Agile teams. 🗂️ Requirements: 5+ years of production experience with React, Strong proficiency in TypeScript, Strong understanding of software engineering principles, Experience with testing and design systems, Experience with REST APIs, Experience with GraphQL APIs, Familiarity with PostgreSQL or DynamoDB, Computer Science degree, Experience with AI tooling, Experience working in Agile (SCRUM or Kanban) environments 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST, GraphQL, AWS, Terraform, PostgreSQL, DynamoDB, Docker, Kubernetes, Jenkins, CircleCI, GitlabCI, Datadog 🏢 Description: About the role You will need to be an expert in frontend development with a thorough understanding of the technologies involved. Strong frontend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST/GraphQL APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a frontend system written in React & TypeScript Deploying and maintaining frontend / backend applications Maintaining system on production used by consumers from several European countries Debugging issues Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Required qualifications: 5+ years of production software development experience in React Strong understanding of software engineering principles, testing, design systems Solid hands-on experience in TypeScript Know-how of REST/GraphQL APIs Familiarity with DBMS like PostgreSQL, DynamoDB Computer Science degree AI Tooling usage Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to backend development (can be in TypeScript) Some experience or interest in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

🏢 Summary: Frontend Developer role focused on building scalable, high-quality e-commerce web applications using React and TypeScript. The position involves developing performant UI components, ensuring excellent UX, and contributing to architecture, testing, and CI/CD processes. Collaboration with product, UX, and mobile teams (Flutter) is key to delivering consistent cross-platform experiences. 🗂️ Requirements: Minimum 3 years of frontend development experience, Strong proficiency in React and TypeScript, Experience with modern HTML and CSS, Experience integrating REST APIs and GraphQL, Knowledge of frontend testing (unit, integration, E2E), Experience with CI/CD pipelines and Docker, Understanding of Clean Code and Test-Driven Development, Ability to optimize web performance and accessibility, Familiarity with modern frontend architectures, Experience working in agile development environments 📃 Skills: React, TypeScript, HTML, CSS, SASS, LESS, Tailwind, Flutter, Dart, GraphQL, REST, Docker, CICD, Jest, Cypress, Playwright, MicroFrontends, DDD, TDD, CleanCode, CoreWebVitals, a11y, Monitoring, ErrorTracking 🏢 Description: Shape the future of E-Commerce with us! Are you ready to develop innovative frontend solutions for online shops with your team, increasing our brand awareness and strengthening customer loyalty? Do you enjoy getting hands-on with modern web technologies and developing high-quality software? Then you are exactly right for our Engineering Team! As a Frontend Developer , you are an integral part of a cross-functional team and report to your Team Lead Engineering. You work closely with your teammates, product management, as well as UX and other specialist departments to realize innovative and customer-oriented solutions. Your Mission You develop high-quality and scalable frontend architectures with passion and technical expertise. Through your commitment, you contribute significantly to implementing technical innovations and continuously improving the User Experience (UX). Your focus is clearly on the Web Frontend with React and TypeScript . At the same time, you are curious about neighboring technologies: Your know-how (or your interest) in Flutter helps us bridge the gap between Web and Mobile App and leverage synergies. Your tasks in detail Technical Responsibility & Development: Analyze, design, and implement new features for our online shops – from the first idea to going live. Develop performant, reusable components in React and TypeScript and ensure a pixel-perfect implementation of sophisticated UI/UX designs. Use your understanding of mobile development (Flutter) to promote professional exchange with the App Team and ensure consistent user journeys across Web and App. Conduct code reviews and promote the application of Clean Code and Test-Driven Development in the frontend. Recognize technical debt and derive targeted measures for its reduction. Quality Assurance & Best Practices: Ensure high development standards, test processes (Unit, Integration, E2E tests), and technical documentation. Optimize the performance of our web applications (Core Web Vitals) and ensure accessibility (a11y). Identify and actively support the maintenance and optimization of frontend build pipelines and test environments. Collaboration & Planning: Work closely with product management and your team to specify requirements, realistically estimate development efforts, and implement solutions effectively. Actively participate in decisions regarding technological direction and bring in suggestions for selecting suitable tools and frameworks in the React ecosystem. Operations & Infrastructure: Support the operation and monitoring of the applications you have developed (Monitoring, Error Tracking). Actively help to continuously improve CI/CD processes for the frontend. What you bring At least 3 years of practical experience in frontend development, ideally in an e-commerce environment. Excellent knowledge of TypeScript and React as well as modern HTML and CSS (SASS/LESS, CSS-in-JS, or Tailwind). An advantage: Knowledge of Flutter and Dart. You understand the concepts of mobile development and can exchange ideas on an equal footing with our mobile developers or even support them punctually. Familiarity with architectural concepts such as Micro-Frontends , Domain Driven Design (DDD), or Self-Contained Systems is an advantage. Knowledge of handling REST APIs as well as GraphQL. Broad experience with CI/CD tools, container technologies (Docker), and an affinity for agile working methods. A high degree of quality awareness for Clean Code, tests (e.g., Jest, Cypress, Playwright), and technical documentation. Strong communication skills, openness to constructive feedback, and a cooperative way of working. Active exchange within the developer community as well as the willingness to regularly bring new knowledge and innovative ideas to the team. We’re probably not a great match if you... Prefer frameworks like SAFe or projects that kick off with a rigid set of formal specifications ( Lastenheft ). Have worked primarily in highly regulated industries without experience in fast-paced, product-led environments and distributed systems. Feel more comfortable in role models where infrastructure, backend, frontend, testing, and product thinking are strictly siloed. Expect requirements to be handed to you fully "ready to go," instead of refining them alongside Product Management and striving to truly understand the customer. View professional development mainly as the employer's responsibility , rather than learning out of your own curiosity—whether that’s on the job, at an evening event, or simply by picking up a book. Are more frustrated than motivated by imperfect systems —spoiler alert: we aren't "there" yet. Strictly separate work from having a good time.