JJ Heffernan
Engineering consultant and builder—systems, web, and product—from Philadelphia.
Overview
JJ Heffernan is an engineering consultant with a background in mechanical engineering and hands-on work across software, hardware, and product development. He helps teams ship reliable solutions: pragmatic architecture and automation on the web, disciplined design and prototyping when the problem lives in the physical world.
Focus
- Software & delivery: TypeScript and modern web stacks, Python, CI/CD, and maintainable service design.
- Hardware & product: Microcontrollers, single-board computers, and local-first hardware when the product calls for it.
- How he works: Clear communication, mentoring, and code review—building durable processes, not only one-off fixes.
Connect
Reach out via email or heff.world. Occasional project and engineering updates also appear on Instagram (@jheffmedia).