Vapi
Member of Technical Staff, Core Backend
San Francisco · Staff+
Sponsorship not specifiedDetected 40 days ago
TypeScriptNode.jsPostgreSQLTemporalKafkaMachine LearningLLMsSensors
About the role
- Most phone systems trap callers in menus and scripts.
- Total raised: $72M Why We're Hiring This Role: The StreamModule pipeline - VAD → STT → LLM → TTS → Transport - runs on cork/uncork backpressure during live phone calls.
- A hundred milliseconds of delay is audible.
Responsibilities
- 60 Day: Own a slice of the BullMQ → Kafka consolidation. Ship event-driven OTEL instrumentation for at least one critical pipeline stage. Harden one provider plugin path so a new model can be added without core changes.
- 90 Day: Drive a measurable reliability or latency win on the call path. Be the backend owner that agents and FDE teams pull in for design reviews on new providers and pipeline changes.
- 60 Day: Own a slice of the BullMQ → Kafka consolidation.
- 90 Day: Drive a measurable reliability or latency win on the call path.
- Be the backend owner that agents and FDE teams pull in for design reviews on new providers and pipeline changes.
- Own a slice of the BullMQ → Kafka consolidation.
- Drive a measurable reliability or latency win on the call path.
- Generational impact: Build the human interface for every business
Requirements
- You have opinions on queue architecture (BullMQ, Kafka, Temporal) and when each is the right fit.
Skills
- NestJS (large codebase).
- Postgres (connection pooling, read replicas), Liquibase for schema migrations.
Compensation
- Real stake: We offer a competitive salary and excellent equity ownership
Benefits
- Real stake: We offer a competitive salary and excellent equity ownership
- Comprehensive health coverage: medical, dental, and vision plans
- Flexible time off: take what you need
- More: catered meals, transportation, gym, and a $10k annual L&D budget
Company info
- Amazon Ring, ServiceTitan, New York Life, Intuit, Kavak, and thousands more, from YC startups to the Fortune 500
- A streaming or real-time platform (Discord, Slack, Zoom, Twitch, Mux, LiveKit), an ML-infra company (Modal, Baseten, Replicate, Together), or a pipeline/workflow shop (Temporal, Stripe Radar, trading systems).
- 70% of the company are previous founders
This listing is sourced directly from Vapi's careers page and normalized into a canonical job model.