[Hiring] Frontend Software Engineer @RTB House

Role Description

As a Frontend Software Engineer, you will join our Product Tools team, building a dozen or so single-page applications that are used to configure, monitor, analyze, and automate advertising campaigns, as well as support various internal company processes.

• Design and implement advanced user interfaces, such as forms divided into nested, sortable sections with drag & drop support;
• Build configurable table views with user-defined column visibility, ordering, and data filtering based on individual preferences;
• Develop reusable UI components used system-wide by multiple teams - for example, an advanced virtualized DataGrid and many others;
• Work with an interdisciplinary product team, including QA engineers, Product Designers, Backend Developers, and DevOps specialists;
• Take part in code reviews and team-based frontend architecture design - we care deeply about code quality, consistency, and continuous improvement;
• Use AI tools (LLMs, coding assistants) to speed up writing test scripts, generating edge-case data, and documenting created artefacts.

Qualifications

• 5+ years of commercial experience in building scalable, high-performance web applications, with a strong focus on React;
• Proficiency in JavaScript and TypeScript;
• Practical experience in writing unit tests using tools such as Testing Library, Vitest, or Jest;
• Solid understanding of frontend-backend communication, including REST APIs and GraphQL;
• Experience with data management and caching libraries like Apollo Client and/or TanStack Query;
• Strong knowledge of HTML and CSS (including Flexbox and CSS Grid);
• Experience using AI to work smarter;
• Fluency in English and Polish (C1 level or above).

Requirements

• Awareness of UX/UI best practices - a product-oriented mindset significantly improves delivered solutions;
• Willingness to proactively suggest architectural or technical improvements;
• Experience with Storybook or similar tools for developing and documenting UI components;
• Basic knowledge of databases (e.g. SQL) - understanding how data is structured and queried helps in designing more effective UIs.

Benefits

• Projects focused on high code quality - solid code reviews are our standard;
• Collaboration within an interdisciplinary, self-sufficient team including: DevOps (ensuring a great Developer Experience), database experts, backend developers, product designers, and QA engineers;
• Hardware and software tailored to your preferences - e.g. MacBook, AI tool licenses;
• Access to modern technologies and the opportunity to apply them in large-scale, high-impact projects;