Senior Member of Technical Staff

Company: Bluejay
Location: San Francisco CA (Union Square office 5 days per week)
Compensation: $225000 - $300000 competitive equity
Employment Type: Full-time
Visa Sponsorship: Not available

Bluejay builds the simulation observability and self-improvement layer for Voice AI agents. Within a year of launch Google DoorDash public healthcare companies public banks drive-through chains and enterprises on five continents use it and it handles millions of calls a month.

Founders Faraz and Rohan built infrastructure for Microsoft Copilot and AWS Bedrock before starting Bluejay. The company raised a $4M seed in 2025 from Floodgate Peak XV and Y Combinator has sustained seven-figure revenue since and is a team of about 10 in Union Square San Francisco.

As a Senior Member of Technical Staff you will architect and build systems that simulate analyze and evaluate conversational AI agents across voice and multimodal and design resilient AWS infrastructure (Lambda EC2 WebSockets SIP) for millions of real-time conversations. This is a high-bar full-ownership role on a tiny team and it is customer-facing: you will work on-site with some of the largest companies in the world to build sell and deploy the product.

• Architect simulation analysis and evaluation systems for conversational AI.
• Build resilient scalable AWS infrastructure for real-time conversations.
• Build algorithms and pipelines that surface insights detect failure modes and keep agents safe and aligned.
• Lead technical execution of projects end to end.
• Work on-site with customers to deploy the product.

• 6 years as a senior engineer
• Proficiency across the stack especially databases AWS and AI engineering
• A track record building high-traffic features at scale and leading technical execution
• An exceptional signal: a strong bachelors degree and/or experience at a top fast-growing startup
• Strong personable communication for customer-facing work
• Ability to work in person in San Francisco 5 days a week

• Strong design opinions from prior systems work
• A highly optimized AI-assisted developer workflow
• Experience handling immense scale as an IC or tech lead

Health insurance 401(k) gym membership free lunch and a Union Square office.

Intro call system design live project coding then a work trial.

Python FastAPI Supabase Redis AWS WebSockets CI/CD; LiveKit Deepgram Cartesia ElevenLabs Gemini; Sentry PostHog Grafana Datadog

REVENUE: 17.5% of first-year salary. Est. fee per hire $39K-$53K; 1 seat(s).

TARGET COMPANIES (suggested): Vapi Retell AI Bland AI Deepgram LiveKit Amazon (AWS) Microsoft.

BEST-FIT CANDIDATE: 6 yrs; senior full-stack w/ AWS AI eng; high-traffic at scale; top startup or strong degree; visa: NO sponsorship; location: SF 5 days.