How I work with clients
Data-oriented design
Problem solving goes beyond shipping once. I look at the full product lifecycle—not just launch, but long-term maintainability and customer experience. No rush jobs that ignore what happens after release.
“Local-first” problem solving
Right-sized solutions: for durable software, it is often cheaper to extend what you already own than to rent someone else’s stack. Your software, your hardware, your constraints—no forced rip-and-replace.
Hands-on engineering
Direct collaboration: you get clear communication, honest tradeoffs, and ownership through delivery and handoff—not a rotating cast or opaque process.
Our services
CAD, embedded, and web—built for real systems
Web & product engineering
From prototypes to production: TypeScript, Astro, APIs, and reliable delivery for your product and team.
Embedded & firmware
Firmware, embedded Linux, sensors, and interfaces—practical engineering for reliable systems.
CAD & mechanical design
Solid modeling, CAD workflows, and practical design for prototypes and small-scale production.
Managed hosting
Deployment through fully managed operations—pick the tier that matches how hands-on you want to be, across common hosting models.
About this demo
Layouts for a real engineering practice
Heff.world is a personal site: blog, projects, services, and resume. Example pages here show section patterns you can reuse—copy lives in Keystatic so you can reflavor without hunting through Astro files.
100%
Owner-led delivery
1
Primary contact
5★
Communication bar
What I can help with
Web & product engineering
From prototypes to production: TypeScript, Astro, APIs, and reliable delivery for your product and team.
Embedded & firmware
Firmware, embedded Linux, sensors, and interfaces—practical engineering for reliable systems.
CAD & mechanical design
Solid modeling, CAD workflows, and practical design for prototypes and small-scale production.
Managed hosting
Deployment through fully managed operations—pick the tier that matches how hands-on you want to be, across common hosting models.
10+
Years building products
40+
Shipped milestones
3
Disciplines in one loop
∞
Coffee-fueled debug sessions
Who you work with
Engineering across web, firmware, and hardware
These layouts are demos, but the intent matches how I work: clear ownership, tight feedback loops, and deliverables you can ship—not slideware. Reach out through the real contact routes on this site when you are ready to talk scope.
Principal engineer - Web platforms, APIs, and product surfaces with an eye for maintainability.
Embedded & firmware - Bring-up, drivers, and test harnesses for real devices—not just dev boards.
Mechanical / CAD - Assemblies, tolerances, and drawings that survive manufacturing.
Integration & DevOps - CI, releases, and observability so teams trust every deploy.
About me
Working at the intersection of mechanical design, embedded systems, and the web, that mix shows up in my projects: from CAD and hardware bring-up to shipping usable software and interfaces people actually enjoy.
This site is my home base on the internet, writing, projects, and ways to work together. If you want the full story, see the resume, blog, LinkedIn, or Instagram (@jheffmedia).
Based around Philadelphia. Available for remote work with cloud-first delivery, async collaboration, and crisp written updates. On-site is by appointment only.