Founding Senior Engineer (Backend)

MissionThe Senior Engineer (Backend) will own features end-to-end from customer requests to their deployment, building on a modular API-first architecture, working within real-time low-latency constraints. You'll also be a foundational part of how we build the culture at Vapi.
Outcomes Own and deliver entire features + projects
Ship a pre-scoped feature within the first 7 days
Ship a feature independently within the first 30 days
Ship optimizations and refactors
Ship a pre-scoped optimization or refactor within the first 14 days
Ex. improve the latency of a component of the speech-to-speech pipeline
Ship an optimization independently within the first 30 days
Ex. refactor a tool-calling mechanism to make it more deterministic
Talk to customers
Receive a request from the Support team and ship the fix within the first 14 days
Pick up customer threads unprompted, investigate, and solve within the first 14 days
Build things that delight customers
Unprompted, delight a customer within the first 30 days (ex. call analytics endpoint)
Competencies Experience with Typescript + Node or similar backend framework
Communication: You can clearly articulate what you're thinking and feeling
Cracked-ness: You're more cracked than the most cracked person on the team
Startup Ready: You have a reason to be here and can make sacrifices for something uncertain
Founder Juice: New ideas come from you, you build it yourself or annoy everyone until it's done ;)
Qualifications: Previous Founding/Senior/Staff/Principal Engineer
1+ years of experience at a company with less than 100 people
5+ years of experience in Full-Stack / Backend Software Engineering

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