Product Engineering Lab Tech
TypeSafe AI
TypeSafe is a frontier model lab. We build reliable and general AI systems to power economically valuable automation. Our mission is to usher in a new era of Transformative Artificial Intelligence (TAI): technology with the power to drive a societal shift on the scale of the agricultural and industrial revolutions.
While others chase benchmarks and academic puzzles, we’ve been quietly rethinking the LLM stack from first principles — building a new kind of general frontier model designed for real-world reliability, decision-making, and autonomy in production.
We’re a small, fast-moving team from OpenAI, Google Brain, and Meta/FAIR, backed by top-tier investors. Since mid-2024, we’ve been engineering the foundation for what comes after the current “state-of-the-art” — a model that actually gets things done.
As a product engineer, you will function as a hacker-in-residence, creating working prototypes with TypeSafe’s API to explore the frontiers of what structured LLMs can do, and eventually taking the best ideas to production. Our tech stack is primarily Python. We also use TypeScript, Next.js, and Tailwind CSS for frontend, with Kubernetes for orchestration. Brainstorm — in writers-room style — innovative product applications for TypeSafe models
Provide actionable, qualitative feedback about model performance to research teams
Collaborate with product, marketing, platform, and solutions engineering teams to ensure the performance of your applications and launch them to customers
Are familiar with popular frameworks and tools that can accelerate work (incl coding agents), and stay current on SOTA best practices
Have shipped software apps end-to-end, including integration with AI/LLMs, and understand their capabilities and limitations
Have 5+ years of professional software engineering, or equivalent professional expertise
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 want you to be able to do the most impactful work of your career at TypeSafe and help define our future as a company.
180k-280k base salary plus equity, based on leveling
100% covered health insurance
Visa sponsorships
J-18808-Ljbffr TypeSafe AI
- TypeSafe AI in San Francisco is seeking a Product Engineer to create prototypes using their API for advancing Transformative AI. The ideal candidate has 5+ years of software engineering experience and familiarity with frameworks like Python, TypeScript, and Kubernetes....Suggested
- ...Resume Refiner seeks a Member of Technical Staff – Product Eng in San Francisco, CA, to enhance our core APIs and SDKs. The role involves end-to-end product... ...individuals with a strong background in product engineering, a passion for building quality products, and experience...Suggested
$230k - $265k
A financial technology company in San Francisco seeks a full stack engineer to join their Product Engineering team. You will be responsible for shipping polished user experiences, developing APIs, and contributing to architectural decisions. Candidates should have 5+ years...SuggestedRemote job- A tech infrastructure company in San Francisco is seeking an experienced engineer to elevate the user experience by enhancing core APIs and SDKs. You'll own product development from inception to production while collaborating closely with customers. Ideal candidates should...Suggested
- .... We’re growing rapidly and expanding our team of full-stack product engineers. The Enterprise team develops products that enable companies... ...~ Experience designing well-structured internal and external APIs that balance high scalability with an intuitive developer...SuggestedRemote workFlexible hours
- ...software development company in San Francisco is seeking a skilled engineer to design and ship a groundbreaking application for team... ...experience in bi-directional data synchronization with code hosting APIs and a commitment to performance optimization. Exceptional talent...Relocation
- ...What we're looking for? We are seeking an experienced fullstack product engineer to join our small, senior team. We’re looking for someone with... ...-quality, polished solutions for our users. Build and wire up APIs for the features you develop, working across our full stack (...Contract work
$190k - $230k
...formerly Sequoia India), shipping fast. Looking for our founding product engineer. What you\'ll work on The honest answer is: whatever moves the... ...in the world — making calls, navigating systems built before APIs existed, parsing structured and unstructured payer responses,...Daily paidLive inWork at officeRemote work- ...WorkOS builds modern developer tools and APIs that make it easy for companies to become... ...developers need to securely scale their products to large organizations. We recently raised... ...accelerate their enterprise journey. Our engineers obsess over the developer experience, actively...Remote work
$150k - $220k
...About the role As a founding product engineer at Hyperspell, your mission is to build the product surface area that makes agent memory useful... ...backend systems, AI workflows, developer experience, integrations, APIs, SDKs, evals, and internal tooling. We have a product that...- ...United States Digital Space LLC in San Francisco is searching for a Software Engineer to own API design and development. This role requires attention to detail and collaboration with various teams to ensure the API meets high standards. The ideal candidate will thrive...Worldwide
$150k - $275k
...superintelligence. Come and be one of them. The Role We are hiring Product Engineers to work on Fluidstack’s AI-integrated software stack that... ...control, construction software, messaging, CRM, and internal APIs, so every team at Fluidstack can build with AI, not just...Full time$100k - $250k
...looking for? Hercules is looking for a senior or staff level product software engineer to help us build the future of AI software development What... ...: system design, architecture, data modeling, and API design Code and codebase quality : write clean, maintainable...Work at officeRemote work- ...their friends to do the same. We’re looking for founding engineers with strong product instincts and an obsessive attention to detail. Bonus points... ...patterns for how humans and agents work together Create an API and agent developer platform that outside builders actually...Full timeNight shift
- ...analysts - on a browser. While our core engineering team scales what works, we need someone... ...you love building prototypes that become products, pushing the boundaries of what AI agents... ...AI analysts that work inside browsers, APIs, and internal systems just like humans -...Temporary workWork at officeRelocation package
- We are a team of engineers and researchers with an ambitious mission: to move the world toward... ...(iOS or hybrid) that leverages the same APIs and sync layer for first-class review on... ...backend APIs/data models and operating production services with observability Mobile...Relocation package
$180k - $290k
Product Engineer — Interact You’ll own Firecrawl’s browser interaction layer — the product that turns Firecrawl from a data extraction tool into... ...is the easiest way to extract data from the web — a single API call to turn any URL into LLM‑ready data. 8‑figure ARR, 100k+...Full timeTemporary workRemote work$180k - $290k
Product Engineer — Search You’ll own the developer-facing search experience at Firecrawl — taking the retrieval and ranking improvements coming... ...URLs into LLM‑ready markdown or structured data with a single API call. In just a year, we’ve hit 8 figures in ARR and 100k+...Full timeTemporary workLive inRemote workShift work- This mid-level Product Engineer will contribute across the full stack to help a scaling startup build reliable, user-focused products that integrate... ...from scoping requirements to deployment in production. Design APIs and data models and implement frontend and backend code. Ship...
- ...Swift Ventures, Y Combinator, and AI Grant. About the Role As a Product Engineer at Sieve, you’ll build our video collection platform: a system... ...teams. Ship full stack features across frontend, backend APIs, and underlying systems. Ship mobile features that enable easy...Night shiftWeekend work
- Product Engineer ENGINEERING | San Francisco, New York City | On-site | Full-time The Role Full Stack Engineers at Rowspace are at the heart... ...that become deeply embedded in investors’ daily workflows Build APIs that allow Rowspace to work seamlessly across chat tools,...Full timeWork at officeDay shift
- ...orchestration in the middle. Prototype → production → iteration. Evals, observability, and... ...TypeScript, Python, and at least one LLM API in a real application. Strong opinions about... ...a PM in the middle. Level Experienced engineers own feature areas end-to-end. Early-...Day shift
$190k - $210k
...funded, early-stage fintech startup is looking for a Founding Product Engineer to join a small, senior team building a new kind of collaborative... ...implement solutions that delight users. Build and wire up APIs across a full stack of React, TypeScript, Go, and PostgreSQL....Remote work$175k - $250k
...responsible for building AuthKit: a set of UI and APIs that enable B2B developers to solve... ...kick-start their enterprise journey. Our engineers obsess over the developer experience,... ...feedback and new perspectives to inform the products we build. We’re searching for engineers...Remote work$175k - $250k
...encryption key management and secret storage product. Vault enables applications to encrypt,... ...—tokens, passwords, certificates, PII, API keys, files—backed by enterprise‑grade encryption... ...teams (e.g., AuthKit, Radar), solutions engineering, and GTM to ensure Vault integrates...Remote work- ...based in San Francisco is looking for an experienced software engineer to join their AuthKit team. The role involves designing and building... ...of software development experience, a passion for quality products, and strong communication skills. Benefits include competitive...Remote work
- ...hardware, by developing the first AI Hardware Engineer. Our goal is to democratize the ability... ...the world. The Role We’re hiring a Product Engineer, Frontend to shape the core web... .... Integrate frontend systems with APIs and backend services; collaborate on backend...Local areaRelocation
- ...s unique technology inspired a brand-new product category, later named "SASE" by Gartner and... ...and creative Product Enablement Engineer to design and deliver compelling product... ...generation Scenario execution Work with APIs to configure SaaS environments and retrieve...WorldwideFlexible hours
- ...Description About the Role We are seeking an experienced fullstack product engineer to join our small, senior team at an early-stage fintech... ...-quality, polished solutions for users Build and wire up APIs for the features you develop, working across our full stack (React...Contract work
$150k - $220k
...Conor previously lead growth at Checkr and managed their $30m API product portfolio. Manu has over 15 years of experience in machine learning and AI, sold two prior companies, led high-growth engineering teams at Airbnb, and bought his first .ai domain in 2014 (he had...
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Product Engineering Lab Tech. Be the first to apply!
- rtl design engineer San Francisco, CA
- new product engineer San Francisco, CA
- product design engineer San Francisco, CA
- product engineering manager San Francisco, CA
- design engineer San Francisco, CA
- senior fpga design engineer San Francisco, CA
- senior design verification engineer San Francisco, CA
- product security engineer San Francisco, CA
- system design engineer San Francisco, CA
- manufacturing design engineer San Francisco, CA



