This role is ideal for ambitious Python engineers with entrepreneurial goals. We are looking for a Python expert to lead the development of Fern’s Python SDK generator. Your work will directly influence the experience of thousands of developers using SDKs for companies like Square , ElevenLabs , Cohere , Webflow , and more. You'll define what high quality looks like in Python SDKs and help set the standard for the broader Python community.
Many of us are former or future founders, and this is an opportunity to scale a company from $1M to $10M ARR while partnering with fast-growing tech companies shaping the future of software. We value in-person collaboration and work out of our office in the Williamsburg neighborhood of Brooklyn.
Sound like you? Get in touch.
Define Python best practices. You’ll set the tone for how a modern Python SDK should feel — readable, idiomatic, and a joy to use. We’re constantly raising the bar to make our SDKs the best in the industry. This is more than code generation; it's about crafting Python libraries that developers trust and love.
Build out our compiler. You'll own core components of our open source compiler , defining the primitives that power every one of our SDKs. You’ll implement new capabilities like auto-pagination and server-sent events , and push the boundaries of what a generated SDK can offer.
Engage with the Python community . You’ll stay on top of modern Python tools and frameworks, incorporate best practices, and work directly with developers through GitHub issues and community forums to evolve the SDK based on real-world needs.
Build our team. You'll work closely with our CEO and CTO to recruit and mentor new engineers as we scale.
Deep experience with modern Python tools, such as Pydantic , mypy , poetry , and uv
Strong grasp of Python’s evolving ecosystem — from type checking to emerging standards like FastAPI
Enthusiasm for shaping language communities, like Niels , our C# engineer who actively engages with the .NET team
An eye for crafting a great developer experience
( Bonus ) You've worked in a high-growth SaaS company
(Bonus) Experience working with the OpenAPI specification, Conjure (Palantir), or Smithy (AWS)
Kind teammates who work hard
First-hand experience building an early-stage startup
Living proximity bonus of $18,000 per year if you choose to live near the office
Meals (breakfast, lunch, and dinner) at the office
Health, dental, and vision insurance
Unlimited vacation
Domestic and international team offsites
Microservices: Express (Node.js), FastAPI (Python)
Postgres + Prisma ORM (Database)
Anthropic + Bedrock (LLM)
Fern (API)
AWS (Cloud)
Phone screen with a founder
Three interviews: one coding, one decomp, one behavioral
Onsite with our team
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