Founding Senior Engineer (Infrastructure)

Company Overview Apple Intelligence and Google Gemini are about to onboard 4 billion people to voice assistants that actually talk like people. This marks a new beginning for voice as the world's default interface. We will all want voice everywhere. Businesses are not ready. Products are not ready. We're building the infrastructure that helps developers close the gap between the raw model and voice AI in production. Give it a try here . We launched in March , scaled revenue, and raised a Series A from a top-tier firm this past week. We're a small team of 17 and growing. We're building out the founding team in-person in SF to scale what's working. Mission The Founding Senior Engineer (Infra) will be responsible for scaling Vapi's real-time conversational infrastructure to millions of concurrent calls, while ensuring every call gets picked up within 1s with 99.9% reliability. You'll also be a foundational part of how we build the culture at Vapi. Outcomes Own scalability projects end-to-end Ship a pre-scoped project within the first 7 days (eg. redis HA) Ship a project independently within the first 30 days (eg. new CRD for managing worker pools) Build monitoring Ship pre-defined monitoring goals within the first 14 days (eg. prometheus rules) Ship monitoring independently within the first 30 days (eg. refactor call monitoring to real-time alert on latency spikes) Build anti-frangibility into the infrastructure Unprompted, build things that make our infrastructure more antifragile (eg. auto multi-cluster rollover). Competencies Experience with Kubernetes, Pulumi, or scaling other distributed systems 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/Infrastructure/DevOps Engineer 1 years of experience at company 5 years experience in Engineering 2 years of experience in Infrastructure Skills JavaScript , Kubernetes, Node.js, Rust, TypeScript, Distributed Systems