Member of Technical Staff, Site Reliablity Engineer
LocationSan Francisco
Work modehybrid
Typefull-time
DepartmentEngineering
EquityIncluded
Company size51–200 people
First seen2w ago
Last seen1d ago
Vapi (/ˈVɑːpi/):
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Voice AI that resolves, not transfers
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Powering 1 billion calls for companies like Amazon Ring, Intuit, ServiceTitan, and New York Life
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Trusted by 1 million developers building the future of voice agents
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Backed by Peak XV, Bessemer, Kleiner Perkins, M12, Y Combinator, and more with $72M raised
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Try talking to Vapi now!
Why We’re Hiring This Role:
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99.99% call completion is the number this role drives. Vapi runs live phone calls — a p99 spike means callers drop. We’ve had 15 stability-gap outages worth learning from, and we need someone who runs incident command, owns SLOs and error budgets, and builds the reliability culture from scratch.
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This is not a bash-and-YAML role. You’ll ship code (Go or TypeScript) for services that monitor and manage the platform: auto-remediation, capacity forecasters, oncall tooling. Capacity planning, load testing, and KEDA-based autoscaling for Vapi’s wscaler and workerpool-cron-scaler are on your plate.
What You’ll Do:
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30 Day: Join the oncall rotation. Walk the 15 stability-gap incidents and turn the patterns into a prioritized reliability backlog. Define the first set of SLOs for the call-completion path.
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60 Day: Stand up error budgets and SLO-based alerting in Chronosphere/Prometheus for the highest-impact services. Run the first proper load test against provider rate limits and per-org concurrency. Tune autoscaling for wscaler / workerpool-cron-scaler.
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90 Day: Ship a real platform service — capacity forecaster, auto-remediation, or oncall tooling — in Go or TypeScript. Own the postmortem process. Drive a measurable improvement in p99 call completion or MTTR.
Who You Are:
Must-haves
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You’ve run incident command and postmortem discipline at scale on a real oncall rotation.
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You’ve operated SLOs and error budgets in Chronosphere, Prometheus, Grafana, or Datadog.
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You’ve done capacity planning and load testing for production systems with real users.
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You’re fluent in Kubernetes production ops: pod crash diagnosis, HPA/VPA tuning, PodDisruptionBudgets, graceful shutdown.
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You know backpressure and autoscaling patterns — KEDA, custom metrics scaling.
Nice-to-haves
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You ship code, not just scripts. You can build platform services in Go or TypeScript (matches Vapi’s cluster-manager, database-health, wscaler, incidentManager).
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Real-time / latency-sensitive product background where degraded means a dropped call, not a slow dashboard.
Tech stack you’ll work in
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Languages: Go and TypeScript (you ship code, not just scripts), Bash.
Vapi services you’ll touch or build: cluster-manager, database-health, wscaler, incidentManager.
Where you likely come from
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A real-time / latency-sensitive product (Discord, Zoom, Mux, Twitch, Twilio, LiveKit, Cloudflare, a trading firm, a gaming backend), or a FAANG SRE / Production Engineer (Google, Uber, Twitter/X, Meta) who misses being hands-on.
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Weak fit: SRE from analytics or CRM backends where “degraded” means a slow dashboard, not a dropped call. Anyone uncomfortable reading or writing code.
Why Vapi:
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Generational impact: Build the human interface for every business
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Ownership culture: 70% of the company are previous founders
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Kind team: The founders, Jordan and Nikhil, are Canadians
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Tier-1 Investors: YC, KP seed, Bessemer Series A
What We Offer:
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Real stake: We offer a competitive salary and excellent equity ownership
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Comprehensive health coverage: medical, dental, and vision plans
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Team love: We love hanging out, and we do quarterly off-sites
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Flexible time off: take what you need
More: catered meals, transportation, gym, and a $10k annual L&D budget