Synthetic Data Engineer

Our synthetic data engineers research model intelligence. You will support the core training stack of our models with a combination of data science, creativity, and engineering skills. You’ll be part of the real ‘secret sauce’ of TypeSafe, figuring out how our models can provide production-ready reliability in the real world.

Responsibilities: On a day to day level, you might

Design and build reliable, production-grade AI systems that integrate large language models and our proprietary models into real-world workflows

Create high-leverage datasets, products, and user interfaces that unlock new capabilities and use cases on top of our model

Run rigorous analyses and experiments to understand how data, training choices, and targeted interventions impact model behavior and performance

Develop and own evaluation frameworks to measure quality, reliability, and emergent characteristics across model iterations

Partner closely with product managers and customers to translate real-world needs into concrete model and system improvements

Continuously iterate, learn, and co-discover new techniques for building exceptional, trustworthy AI product

Our tech stack is primarily Python. We also use TypeScript, Next.js, and Tailwind CSS for frontend, with Kubernetes for orchestration. We empower developers to use any tooling they find helpful for getting their job done, including Claude Code and Cursor.

Have 5+ years of professional software engineering, or equivalent professional expertise

Have strong coding ability and product intuition

Enjoy thinking beyond the code to how systems are used in the real world

Maintain high attention to detail and a strong bar for quality

Can describe complex problems succinctly and clearly

Care deeply about our mission and are driven to translate it into real-world impact

Thrive in ambiguous problem spaces and take satisfaction in finding creative solutions

Have hands-on experience implementing LLMs and understand their capabilities and limitations

We’re a small, flat, close-knit team dedicated to real-world impact preparing the world for Transformative AI. Our team works fully in-person in our San Francisco office near Embarcadero station. We love what we do and care about our work a lot.

We strive for excellence and craftsmanship and won't stop until we get there. When the team wins, we all win, and we enjoy collaborating and inspiring each other to grow as a team and as individuals.

We also value emotional honesty, kindness, and bringing your whole self to work. We build machines; we don't try to be machines.

We want you to be able to do the most impactful work of your career at TypeSafe and help define our future as a company.

We provide

- Base salary of $180k-280k plus equity, based on leveling

- 100% covered health insurance

- Daily lunch and dinner

- Visa sponsorships

- 401K plans