Mid/Senior Frontend Developer

Join Sensor Tower as a Mid/Senior Frontend Developer, where you will take ownership of major technical components, shape the technical direction of our product, and mentor junior and mid-level engineers. You will collaborate with Product Managers, Data Science, and Backend Engineers to deliver an intuitive user experience and ensure seamless data flow. Enjoy a hybrid work environment, company-paid health insurance, wellness programs, retirement savings accounts, flexible paid time off, and stipends for office and gym setup.

• Architect and deliver complex, scalable frontend systems that are simple and effective, removing unnecessary complexity from our codebase.
• Lead technical decision-making for medium-to-large scoped features, taking responsibility for the successful delivery of value to the customer.
• Mentor junior and mid-level engineers through code reviews, pair programming, and by instilling quality-first habits across the team.
• Proven ability to architect complex state management. While our stack relies on TanStack Query, React Router and Zustand, we value engineers who understand the principles and can adapt expertise from other libraries like Redux, MobX, NextJS
• 4+ years of software engineering experience with a deep specialization in modern JavaScript, TypeScript, and React
• Experience elevating the skills of peers. You don't just review their code; you teach patterns and best practices
• ​​You can design systems that handle complexity without becoming complicated, prioritizing long-term maintainability
• A "Product Owner" mindset. You care deeply about the "why" behind every feature, viewing code as a tool to solve real user problems. You are comfortable pushing back on requirements and proposing alternative solutions that drive better business outcomes and user experiences
• Competence in writing robust and efficient unit and integration tests using frameworks like Jest or Playwright
• Deep understanding of web performance, browser internals, and optimization techniques for data-heavy applications
• Experience in data visualization and analytics (handling large datasets, heavy DOM manipulation with libraries like Highcharts)
• A portfolio, GitHub history, or technical writing that demonstrates clean code, an eye for design, and the ability to solve complex architectural challenges
• Familiarity with back end frameworks Ruby on Rails/Angular and different types of DBs (Clickhouse, Mongo, Postgres)
• Knowledge of AI-driven coding tools and models as we encourage leveraging AI to enhance coding efficiency and unlock creative potential