Member of Technical Staff, Backend
$200k - $325k • Remote • San Francisco • FullTime
Posted 4mo ago
Job Location
San Francisco
Tech Stack
Remote Work Policy
Fully remote
Employment Type
FullTime
Categories
AI Engineer
About the job
Vapi is seeking a Backend Product Engineer to own critical systems that power over a million developers building voice agents. This role involves tackling complex backend challenges related to durable APIs, real-time workflows, observability, and the reliable operation of non-deterministic systems. You will be instrumental in moving voice agents from compelling demos to dependable production-ready solutions at scale. The work is described as genuinely hard and unusually fun, offering a chance to build the human interface for every business.
Responsibilities
- Build and improve backend systems for agent self-improvement, trust, and guardrails.
- Design APIs, services, and data models for customer-facing features.
- Define evaluation and rollout criteria for new systems.
- Instrument and monitor deployed systems.
- Operate as an independent owner for customer-facing backend areas, managing the full improvement loop.
- Contribute to product decisions and deliver multiple meaningful improvements in production.
- Integrate with LLM, speech-to-text, text-to-speech, and telephony systems.
- Use AI coding agents as a throughput and quality lever.
Requirements
- Proven track record operating at senior or staff scope, independently owning customer-facing backend product areas.
- Strong hands-on experience with TypeScript/Node.js, Go, or a comparable backend stack.
- Ability to design clear APIs, services, and data models.
- Experience building distributed or asynchronous systems with databases, queues, workflows, or event-driven patterns.
- Strong product judgment, starting with user problems and translating requirements into technical approaches.
- Demonstrated production ownership, including testing, observability, reliability, and incident response.
- Regular, thoughtful use of AI-assisted development tools.
- Self-direction, customer empathy, and clear communication skills.
- Experience with Postgres and high-volume, event-driven systems (nice-to-have).
- Experience with real-time systems, voice or telephony, LLM-powered products, or AI agents (nice-to-have).
- Experience operating cloud-native services on AWS and Kubernetes/EKS (nice-to-have).
- Experience building developer platforms, public APIs, SDKs, or dashboards (nice-to-have).
Benefits
- Competitive salary
- Excellent equity ownership
- Comprehensive health coverage (medical, dental, vision)
- Flexible time off
- Catered meals
- Transportation
- Gym membership
- Equipment
- $10k annual L&D budget
- Quarterly off-sites