[Hiring] Frontend Developer @Poland and Eastern Europe

Role Description

We are looking for Frontend Developers to join a project delivered for our international client operating in the sustainability and ESG domain. This role is a great opportunity to work on a live production application undergoing a major modernization and migration initiative.

• Develop, maintain, and improve frontend applications within the client’s internal web component ecosystem.
• Support the migration of existing React-based frontend solutions into a lit-html based architecture.
• Build reusable UI components and frontend features aligned with the client’s internal standards and component libraries.
• Collaborate closely with backend engineers working on the migration from Python-based pipelines to Java services.
• Translate business and technical requirements into clean, maintainable, and user-friendly interfaces.
• Create and maintain unit, integration, and browser-based automated tests.
• Ensure high code quality through testing, debugging, code reviews, and continuous improvement activities.
• Work closely with frontend developers, backend engineers, QA specialists, technical leads, and internal customer stakeholders.
• Contribute to frontend architecture discussions, migration planning, and modernization activities.
• Support the continuous improvement of development standards, engineering practices, and delivery workflows.
• Depending on seniority, take ownership of technical areas, support architectural decisions, and mentor less experienced team members.

Qualifications

• Commercial experience as a Frontend Developer in modern web application development.
• Strong experience with JavaScript and TypeScript in frontend environments.
• Good practical experience with React and component-based frontend development.
• Interest in or experience with web components and modern frontend architecture patterns.
• Experience working with reusable UI libraries and shared frontend components.
• Practical understanding of lit-html or willingness to quickly learn and work within a lit-html based ecosystem.
• Experience with unit, integration, and browser-based testing approaches and tools.
• Good understanding of frontend application architecture, maintainability, and scalability.
• Experience integrating frontend applications with backend services and APIs.
• Solid knowledge of HTML5, CSS3, responsive web design, and browser compatibility.
• Experience with Git and standard software development workflows.
• Strong communication and collaboration skills in international engineering environments.
• Practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery.
• Work from the European Union region and a work permit are required.

Nice to have

• Experience with web components or lit-html based solutions.
• Experience working on migration or modernization projects involving legacy frontend stacks.
• Knowledge of frontend architecture patterns in enterprise-scale applications.
• Experience working in complex internal platform environments.
• Experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work.
• Interest in and familiarity with emerging AI-driven practices (e.g. agent-based workflows, automation patterns, AI-augmented development), with a willingness to explore and experiment beyond standard approaches.

Recruitment Process

• CV review
• HR call
• Interview
• Client Interview
• Decision