Quilter's File I/O team builds the bridges between Quilter and the world's leading PCB CAD tools-Altium, Cadence Allegro, and Siemens Xpedition. You'll work primarily in our Python File I/O codebase: parsing, translating, and generating complex (and often undocumented) CAD formats, and mapping them into Quilter's internal "board" model. This is a genuinely AI-native team-and we'll make you dangerous with it. A lot of companies say "we use AI." Here, we will pay for you to master it: • Build your own agent harnesses for the kind of reverse-engineering we do-parsing undocumented binary formats, mapping vendor schemas, automating the tedious parts of integration work. • Run real model evals on our actual problems-not vibes or Twitter threads. • Develop genuine craft in prompting, context engineering, and MCP server design-skills that compound over your whole career. • Operate with the leverage of a team of ten. Work that used to require a squad of engineers, you'll learn to ship solo. • You'll leave this job a substantially more capable engineer than you arrived. That's the deal. What You'll Do • Build and extend integrations with CAD vendors' file formats and scripting systems. • Reverse-engineer proprietary binary and text-based formats, with support from senior engineers. • Help shape Quilter's internal PCB representation as we expand support for new tools. • Write robust, well-tested code that holds up against messy real-world customer data. • Use-and help build-the next generation of agent-powered workflows for CAD reverse engineering. • Own features end-to-end: design, implementation, testing, rollout. What We're Looking For • 3-7 years of software engineering experience, with meaningful backend or systems work. • Strong Python proficiency. This is the language you'll spend nearly all your time in, and real expertise here matters more than anything else on this list. A track record of writing clean, maintainable code in real production codebases. • Genuine excitement about coding agents and a real hunger to get great at them-you want a team that will invest in that growth, not throttle it. • Comfort with ambiguous, reverse-engineering-flavored problems: unfamiliar code, undocumented formats, weird edge cases. • General knowledge of binary formats • Solid fundamentals in design, testing, and debugging. • Strong communication and high ownership in a fast-moving startup environment. Nice to Have (genuinely nice-to-have - none of these are required, and we don't expect any one candidate to have most of them) • A little C or C++ - not required at all, but occasionally helpful for skimming vendor SDKs or binary formats. • Familiarity with PCB / EDA / CAD workflows or hardware tinkering. • Experience with binary or large-scale serialization formats (protobuf, custom binary, XML, JSON). • Experience building tooling around coding agents (evals, harnesses, MCP servers, etc.). • Cloud infra (AWS, Docker, Kubernetes, Terraform). • Open-source contributions in developer tooling, CAD, or simulation. Please note: We are an equal opportunity employer. At this time, we are focused on hiring primarily within the US, with occasional exception to accommodate exceptional talent. What we offer: • Interesting and challenging work • Competitive salary and equity benefits • Health, dental, and vision insurance • Regular team events and offsites (~4x / year) • Unlimited paid time off • Paid parental leave