Founding Engineer

About the role

Founding Engineer

$120K - $170K 0.20% - 1.00% Equity

Location: San Francisco CA US

Job type: Full-time

Role: Engineering Full stack

Experience: 1 years

Visa: US citizen/visa only

Skills: Python React PostgreSQL Amazon Web Services (AWS)

Bluejay is building the simulation evaluation and observability layer for voice text AI agents.

We work with Fortune 500s multi-national corporations and startups to make sure their AI agents perform as intended. We raised a 4m seed backed by Floodgate PeakXV and YC in June and have been doubling our growth every 3 months since inception.

We are looking for cracked FULL STACK founding engineers with 1-2 years of experience who would like to join the Bluejay rocketship. We want fresh scrappy engineers who get really excited building cool shit. We hold a high technical bar and expect proficiency across the stack.

At Bluejay youll be working with some of the largest companies in the world to QA their voice and text AI agents. Youll be working with tech across the stack and taking full ownership for your work. We are a super small team punching well above our weight and expect you to do so as well!

Frontend

• React Tailwind
• TypeScript
• NextJS

Backend

• Python FastAPI
• Supabase Redis
• AWS (a lot of it)
• Voice AI: LiveKit Deepgram Cartesia Elevenlabs Gemini etc
• Text AI: Pydantic AI OpenAI agentic frameworks
• Websockets
• CI/CD chops

Desirable Quirks

• super opinionated about random design decisions
• enjoys keeping a clean room (codebase cleanliness)
• physically cringes when seeing inefficient code or poorly designed systems
• has good intuition when designing new systems
• aesthetic inspired artsy in touch

Desirable Experiences (any of these will pique our interest)

• Has worked at a YC company as a founding engineer for over 6 months
• Has worked in the voice AI space
• Has built beautiful frontend websites
• Is a technical ex-VC-backed founder

What Youll Do

• Architect and develop systems that simulate analyze and evaluate conversational AI agents including voice and multimodal systems.
• Design resilient scalable infrastructure using AWS (Lambda EC2 Websockets SIP) to handle thousands of real-time conversations.
• Develop algorithms and pipelines that surface insights detect failure modes and ensure agents are safe reliable and aligned with human intent.
• Work on-site with customers. This early on youll be building selling and deploying the product to real customers.

About Bluejay

Bluejay is the end-to-end testing platform for conversational AI with a strong focus on voice. We serve customers ranging from very large enterprises to the hottest startups and are backed by Y Combinator and other prominent investors and angels. Faraz and Rohan former AI engineers at Microsoft and AWS founded the company. During Y Combinator we grew to over $100K in ARR in under a month and we now have deals with multiple Fortune 500 companies.

At Bluejay we believe that trust is not a feature its the the future the AI agent companies that win will be those we can trust: safe reliable and aligned with human intent. Our mission is to engineer trust into every AI interactionwhether its a voice agent answering a call or a multi-modal system handling sensitive data.

Were setting the gold standard for trustworthy AI agent testing through three guiding principles:

Simulation is the New Standard. If your AI agent hasnt been tested in a simulated environment it hasnt really been tested. We rigorously pressure-test every scenario failure condition and edge case before your agent reaches the real world.

Safety Isnt Optional. Security compliance adversarial testing and red teaming arent just boxes to checktheyre pillars of responsible AI development. We make it easy to proactively evaluate agents for failure modes before they cause harm.

Trust Demands a world where AI agents make decisions for us we need impartial systems to evaluate their behavior. Thats why Bluejay exists as an independent third-party arbitera standard of truth that companies regulators and end users can rely on. We aim to be the scoreboard not the player.

Stop vibe testing. Quality is engineered. Bluejay is here to build the future of trustworthy AI.