Mixpanel
Senior Software Engineer, Experimentation
San Francisco, US (Hybrid) +1 · Senior · Full-time · Posted Oct 22, 2026
- Location
- San Francisco, US (Hybrid)
San Francisco, CA, United States - Experience
- 5+ years of professional software engineering experience.
- Education
- Bachelor's degree in Computer Science, Mathematics, a related field, or equivalent practical experience.
About the job
Owns the technical design and delivery of full-stack features for Mixpanel’s experimentation, feature flagging, session replay, and heatmap products.
What you'll do
- Design and deliver complex features across backend services, data models, and frontend experiences; make technical tradeoffs and manage concurrent workstreams.
- Improve production reliability, observability, and operational excellence; handle complex bugs and on-call incidents.
- Partner with Product, Design, AI Engine, and Product Platform on product direction, AI features, SDKs, and shared infrastructure; mentor engineers.
What they ask for
- Bachelor's degree in Computer Science, Mathematics, a related field, or equivalent practical experience.
- 5+ years of professional software engineering experience.
- Experience building and operating production systems end to end, with ownership of reliability and correctness.
- Expert-level depth in systems, web, or data infrastructure, plus broad understanding of full-stack architecture.
Nice to have
- React / TypeScript; Django / Python.
- Experience with experimentation, feature flagging, session replay, high-throughput services, analytics or observability platforms, LLMs, AI agents, tool-use frameworks, or AI coding tools.
Tools
React, Python, TypeScript, Django, LLMs, AI agents, Claude Code, Cursor
AI focus
Partner with AI Engine to bring AI into how customers design, run, and understand experiments and replays.
Model-written summary · the original posting is authoritative