[Hiring] Senior Frontend Developer @Poland and Middle-Eastern Europe

Role Description

You will work with a microservices architecture, modern front-end technologies, and a data-driven, experimental approach to product development. Our teams rely on Agile methodologies, A/B testing, continuous delivery, and data insights to build and continuously improve solutions used by a large number of customers.

You will have a real impact on both the customer experience and the technical direction of the platform, working closely with developers, product teams, and other business stakeholders.

• Developing and maintaining solutions within a high-availability infrastructure, focusing on improving customer experience, business performance, architecture, and technologies.
• Designing and implementing new projects in collaboration with colleagues and external partners.
• Working with modern technologies within a microservices architecture.
• Contributing to a data-driven and experimental development approach, including A/B testing and insights-driven feature development.
• Mentoring junior and mid-level developers and supporting their technical growth.
• Improving coding standards, development processes, testing practices, tools, and team collaboration.

Qualifications

• At least 6+ years of professional experience in software development.
• Experience working on online products with large codebases and a significant user base.
• Experience working with large-scale and distributed systems.
• Strong experience with modern JavaScript (ES2020+), TypeScript, and React, including React Hooks and server-side rendering.
• Solid knowledge of HTML5, CSS3, SASS, CSS Modules, and responsive design.
• Experience with testing libraries such as Jest and React Testing Library.
• Experience troubleshooting cross-browser compatibility and performance issues.
• Experience with server-side technologies such as Node.js and Express.js.
• Familiarity with modern build and bundling tools such as Webpack, Babel, or Vite.
• Familiarity with CI/CD pipelines and cloud environments such as GCP or AWS.
• Experience working in Agile environments and a strong focus on delivering results.
• 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.

Requirements

• 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