Actively AI
Senior/Staff Software Engineer (Full-Stack Engineer)
$160K–$210K
New York, New York, United States +1 · Staff · Full-time · Posted Apr 6, 2026
- Location
- New York, New York, United States
San Francisco, California, United States - Experience
- 5+ years.
About the job
Architects and builds the customer-facing product experiences and platform through which users direct, monitor, and collaborate with Actively’s AI agents.
What you'll do
- Build and ship end-to-end features across backend services, background workflows, and user interfaces.
- Design shared product frameworks, patterns, and components, and prototype agent interactions such as chat, feedback loops, and workflow builders.
- Improve performance and reliability, and iterate on product experiences using customer feedback.
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.
- Able to make architectural and product decisions, own outcomes, and work through ambiguity.
Nice to have
- Track record building 0→1 products in fast-moving, resource-constrained environments.
- Experience as an early or founding engineer, or deep experience building agentic UI systems.
Pay
$160,000 — $210,000 USD (base salary)
Tools
Python, FastAPI, React, TypeScript, Salesforce, Outreach, SQL/NoSQL
AI focus
Build user-facing experiences for configuring, debugging, and collaborating with AI agents, including conversational interfaces, feedback loops, and workflow builders.
Model-written summary · the original posting is authoritative