About this role
Mid/Senior Frontend Developer at Sensor Tower. Location: Lisbon, Lisbon, Portugal. Role: architecting frontend, mentoring engineers, delivering features Requirements: 4+ years engineering experience with JavaScript/TypeScript and React; expertise in architecting state management, web performance, testing (Jest/Playwright), mentoring peers, and a product‑focused mindset. Category: Software Development Seniority: Mid Level Tools: JavaScript, TypeScript, React, TanStack Query, React Router, Zustand, Redux, MobX, NextJS, Jest, Playwright, Highcharts, Ruby on Rails, Angular, Clickhouse, Mongo, Postgres, GitHub, Sidekiq Commitment: Full Time Workplace: Remote Languages: English