Founding Backend Engineer at Syndesus – San Francisco, California

Our client is an early-stage AI infrastructure startup building the foundation for how complex documents are transformed into structured, LLM-ready data. Their platform ingests and parses formats like PDFs, PowerPoints, and spreadsheets into clean, reliable outputs (Markdown + JSON) that AI agents and language models can work with immediately.

Their technology enables high-stakes document intelligence workflows across industries such as finance, legal, and healthcare. They are building a small, talent-dense engineering team focused on shipping production-grade systems from day one.

Our client is hiring a Founding Software Engineer to join their team in San Francisco. This is a rare opportunity to define the engineering culture and technical foundation of a company at the earliest stage.

You will operate with high ownership, move quickly from idea to production, and build systems that scale from research prototypes to enterprise deployments. This role is backend- and infrastructure-heavy, ideal for someone who wants to be close to the core technical stack.

As a founding engineer, you will own critical infrastructure and backend systems end-to-end, including:

This is a hands-on engineering role for someone excited to build core infrastructure at an early-stage startup.

Our client is based in San Francisco, and this is an in-person role. You’ll be working closely with the founding team in a collaborative, high-ownership environment.