Actively AI
Senior/Staff Software Engineer (Full-Stack Engineer)
$160K–$210K
San Francisco, California, United States +1 · Staff · Full-time · Posted Apr 6, 2026
- Location
- San Francisco, California, United States
New York, New York, United States - Experience
- 5+ years.
About the job
Build and shape Actively AI’s customer-facing product for configuring, observing, and collaborating with AI agents through web interfaces and real-time chat workflows.
What you'll do
- Ship end-to-end features across Python/FastAPI services, background workers, and React/TypeScript interfaces.
- Architect shared product frameworks, components, and platform patterns.
- Prototype AI-agent interactions and iterate on customer feedback to deliver reliable, user-friendly experiences.
What they ask for
- 5+ years building and shipping high-impact, customer-facing products end-to-end.
- Deep experience with React, TypeScript, and modern web frameworks; comfortable with Python/FastAPI backends.
- Experience shipping real AI-powered products and turning LLM capabilities into fast, trustworthy user-facing experiences.
- Ability to own outcomes end-to-end and make architectural and product decisions in ambiguous environments.
Nice to have
- Track record building 0→1 products in fast-moving, resource-constrained environments.
- Experience as an early or founding engineer, or building agentic UI systems.
Pay
$160,000 — $210,000 USD (base salary)
Tools
Python, FastAPI, React, TypeScript, SQL/NoSQL
AI focus
Build user-facing experiences for AI agents, including conversational interfaces, feedback loops, workflow builders, and tools for configuring, debugging, and collaborating with agents.
Model-written summary · the original posting is authoritative