Founding Member of Technical Staff - Product Engineering (Full-Stack)

TensorZeroNew York, NY, US

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Founding Member of Technical Staff — Product / Full-Stack Engineering

Join to apply for the Founding Member of Technical Staff — Product / Full-Stack Engineering role at TensorZero

Founding Member of Technical Staff — Product / Full-Stack Engineering

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Join to apply for the Founding Member of Technical Staff — Product / Full-Stack Engineering role at TensorZero

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This range is provided by TensorZero. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$200,000.00 / yr - $300,000.00 / yr

TensorZero is an open-source platform that creates a feedback loop for optimizing LLM applications — turning production data into smarter, faster, and cheaper models.

Integrate our model gateway
Send metrics or feedback
Optimize prompts, models, and inference strategies
Watch your LLMs improve over time

It enables a data & learning flywheel for LLMs by unifying :

Inference : one API for all LLMs, with

Observability : inference & feedback ? your database

Optimization : from prompts to fine-tuning and RL

Evaluations : compare prompts, models, inference strategies

Experimentation : built-in A / B testing, routing, fallbacks

We've raised from FirstMark (backed ClickHouse), Bessemer (backed Anthropic), Bedrock (backed OpenAI), and many angels . We're lucky to have years of runway , giving us the flexibility to fully focus on open source for now with an ambitious long-term vision.

Role

We are looking for a Founding Member of Technical Staff who's hungry to learn and contribute across the stack. Early on, you'll work as a product engineer focused on the highest-impact user-facing features.

You'll work alongside and learn from experts in front-end (e.g. co-creator of Radix UI, React Router, RemixJS), back-end (e.g. ex-maintainer of the Rust compiler), and ML (e.g. researchers with thousands of citations).

The vast majority of your work will be open source. You can learn more about our technical roadmap and vision here.

Team & Culture

We're a small technical team based in NYC (in person) . As an early contributor, you'll work closely with us and have a significant impact on the project's future and vision.

Viraj Mehta (CTO) recently completed his PhD from Carnegie Mellon, with an emphasis on reinforcement learning for LLMs and nuclear fusion, and previously worked in machine learning at KKR and a fintech startup; he holds a BS in math and an MS in computer science from Stanford.

Gabriel Bianconi (CEO) was the chief product officer at Ondo Finance ($10B+ valuation) and previously spent years consulting on machine learning for companies ranging from early-stage tech startups to some of the largest financial firms; he holds BS and MS degrees in computer science from Stanford.

Andrew Jesson (MTS) is an ML researcher with deep expertise in Bayesian ML, causal inference, RL, and LLMs. He's finishing his post-doc at Columbia and previously received a PhD from Oxford, during which he interned at FAIR. He has 3.3k+ citations and several first-author papers at NeurIPS and other top ML venues.

Aaron Hill (MTS) is a back-end engineer with deep expertise in Rust. He became one of the maintainers of the Rust compiler team… while still in college. Later, he worked on back-end infrastructure at AWS and Svix. He's also an active contributor to many notable open-source Rust projects (e.g. Ruffle).

_____ You?

What We Offer

Competitive compensation — We believe that great talent deserves great compensation (salary, equity, benefits), even at an early-stage startup.

Open-source contributions — The vast majority of your work will be open-source and public.

Learning and growth opportunities — You'll work alongside experts in front-end, back-end, and ML to build high-impact user-facing products.

Small, technical, in-person team — You'll work alongside a 100% technical team and help shape our vision, culture, and engineering practices.

Best-in-class investors — We're lucky to be backed by leading funds like FirstMark (backed ClickHouse), Bessemer (backed Anthropic), Bedrock (backed OpenAI), and many angels. We have years of runway and a long-term mindset.

We're Looking For

Strong technical background — You've tackled hard technical problems. You're comfortable driving large projects from inception to deployment (to start, TensorZero's observability dashboard).

Passionate about your craft & design — You're excited about the idea of re-thinking developer tooling from first principles to build interfaces and workflows that don't just work but also delight.

Hungry for personal growth — There are no speed limits at TensorZero. You're excited about learning and contributing across the stack.

In-person in NYC — We work in-person five days a week in NYC. We work hard and obsess about the craft – but maintain and encourage a healthy lifestyle with a long-term mindset.

You can find us on Github : https : / / github.com / tensorzero / tensorzero

Compensation Range : $200K - $300K

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Engineering and Information Technology

Industries

Technology, Information and Internet

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