Junior Frontend Engineer (React)

Quick Facts

• Role: Junior Frontend Engineer (React)

• Focus: Frontend development for advertising and privacy/consent management (CMP/GDPR)

Description

Join a team responsible for parts of an advertising ecosystem, including high-impact display ads and privacy and user consent management modules (CMP/GDPR). You will own frontend delivery end-to-end—refining ideas, implementing, deploying to production, and monitoring your changes. The role emphasizes autonomy, collaboration, code quality, and continuous improvement of workflows.

Responsibilities

• Take hands-on ownership across the full delivery process: from idea refinement and implementation to production deployment and live monitoring

• Learn and apply architectural patterns through discussions and best-practice sharing

• Collaborate cross-functionally with UX designers, data analysts, business partners, and other engineering teams

• Ensure quality and engineering standards through code reviews and knowledge sharing while improving technical stack and developer workflows

Requirements

• Commercial experience as a Software Engineer building complex, high-traffic web applications

• Strong proficiency in JavaScript (ES6+), TypeScript, and React

• Openness to AI-driven development and developing backend skills

• Proactive, ownership-driven mindset with initiative to start technical discussions and find solutions

• Polish fluency (C1) and English proficiency (B2) for written and spoken communication

• Nice-to-have: Experience or interest in AdTech or web privacy standards (GDPR, CMP/consent management)

Benefits

• Flexible working hours in a hybrid model (4/1) with core start times between 7:00 a.m. and 10:00 a.m., plus 30 days of occasional remote work

• Annual bonus based on performance and company results

• Well-located offices and excellent work tools (including choice of MacBook Pro or Dell with Windows)

• Fringe benefits via a cafeteria plan (e.g., medical, sports, lunch packages, insurance, vouchers)

• Paid English classes relevant to the job

• Training budget, inter-team tourism, hackathons, and an internal learning platform

• Additional day off for volunteering

• Social events and community activities