Product Design & Prototyping in New Jersey
If you're building a physical product in New Jersey, working with an engineering firm in your own backyard changes the pace of everything. Prototypes reach your hands in days, not freight timelines. Questions get answered in your timezone, the same day. And the people designing your product are mechanical engineers on staff in North Jersey — not a contractor network on the other side of the world.
RMA Engineering is a product development firm based in North Jersey. Design, prototyping, and manufacturing under one roof, and one rule we've never bent in 10+ years: you keep 100% of your IP.
What we do here
Design
Your idea becomes a manufacturable design: CAD files, drawings, bill of materials. Projects start around $2,000. You own every file.
Learn MorePrototype
3–5 iterations in our own workshop: 3D printing, CNC machining, urethane casting. From $100 proof-of-concepts to production-intent builds.
Learn MoreManufacture
Tooling, quality control, and production runs without leaving the state. First runs typically ship in 8–16 weeks.
Learn MoreWho we work with in New Jersey
First-time inventors from every corner of the state. Startup founders who need a working prototype before their next raise. Established NJ businesses adding a product line or fixing a design that isn't manufacturable. R&D teams that need custom fixtures built to spec. If it's a physical product, it's our lane.
A closed workshop, on purpose
One thing you won't get from us: a facility tour. Our workshop is closed to visitors — deliberately. At any given time, the benches hold prototypes and tooling for clients who trusted us with unreleased products, and protecting that work is the point. Yours gets the same treatment: NDAs signed before you share anything, your project never on display to whoever walks through. You get detailed photo and video documentation at every stage, live video reviews with the engineer doing the work, and fast local delivery of every prototype iteration — so being nearby still pays, without your IP ever sitting in a showroom.
Honest numbers, local speed
Most projects start around $2,000 for the first design stage, and basic products typically run $6,000–15,000 in engineering through design and prototyping to manufacturing-ready. Every stage is a separate go/no-go. Local means the feedback loop between "design it" and "hold it" runs in days — and that loop is where good products get good.
Questions New Jersey clients ask us first
Ready to build your product in New Jersey?
No pressure, no obligation — just a straight answer on what your product needs.