Senior Backend Engineer
Core
Design, build, and own end-to-end product features for a monetization platform used by thousands of developers and hundreds of millions of end-users.
Role type
Senior hands-on IC backend engineer
Builds
Production-grade backend systems and SDKs for mobile app monetization
Domain
Fintech / SaaS / Mobile App Economy
Deliverable
production ML models | product features
Required skills
Backend engineering, Advanced SQL, System design, Product sense, Code ownership, Debugging, Mentorship, AI tool usage
Preferred skills
Python, PostgreSQL, SDK development, Mobile app in-app purchases, React/SPA
Technologies
Python, PostgreSQL, React, SPA, AI coding tools (Copilot, Cursor, Claude Code)
Responsibilities
Scope and drive rollout of features from problem definition to production, Write performant code at scale, Debug complex issues, Participate in code reviews and architectural discussions, Mentor junior engineers, Respond to incidents and maintain system reliability
Seniority
Senior, hands-on IC