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Mechanical engineering · DFM · Prototyping · NJ & NYC

Mechanical engineering and prototyping for hardware teams.

Senior engineers and designers in Kearny, New Jersey, minutes from NYC, with an in-house prototyping lab. Companies and founders across the US use us for product development, industrial design, engineering, prototypes and manufacturing support. You get an estimate first, a detailed scope second, and a cap on every phase.

Get an estimateSee the work
Estimate in 3 business daysDirect line to the engineerPrototype lab in Kearny
IP69K rugged enclosure designed for manufacturingRolling vinyl record cart with a welded frame and sheet metal panelsCalibra AI desk light taken to production32 projects →
Client Company LLCExample Project
Project portal byFlores Engineering
Cost$2,700 billedof $9,200 to $11,300 estimate
Paid $1,500Unpaid $1,200
TimelineOn track
Nov 29, 2026Target completion · 50 days left
30% complete
Timeline by phase
SepOctNov
Draft model
Design direction
Prototype exploration
CAD bodies
Engineering drawings
Final prototype
CMF & renderings
POCEVTDVTPVTMPToday
Updated Oct 10, 2026Questions? Contact Sergio Flores
Engineers who worked on products for
  • Stryker
  • MakerBot
  • ULC Robotics
  • WAC Lighting
  • Schonbek
  • Chefman
  • Calibra
  • Eco Soapr
  • Needle to Wax
  • CLTL
  • Medusa Distribution
  • Shinkei Systems
  • InTech
  • Rapido
Start where you are

Where is your product right now?

01Just an ideaFeasibility, concept and the simplest design that can be built.Estimate this → 02A working prototypeDFM, process selection and documentation a supplier can build from.Estimate this → 03A stuck projectFailure analysis, test data and a fix based on root cause.Estimate this → 04Ready to scaleCost reduction, yield and supplier coordination at volume.Estimate this →
Services

Product development, design, engineering and manufacturing support.

Product development

End to end, from feasibility to the production handoff, with a cap on every phase.Product development →

Industrial design

Sketches, renders, product architecture, CMF and packaging that engineering can build.Industrial design →

Engineering

Mechanical design, DFM, robotics, and electrical and firmware with partner engineers.Engineering →

Prototyping

FDM and SLA printing, CNC and PCBA builds in our Kearny lab, parts the same week.Prototyping →

Manufacturing support

Supplier sourcing, landed cost, vendor management and compliance test oversight.Manufacturing support →

AI operations

Custom ops hubs, client portals, AI agents and integrations, built from the system we run on.AI operations →
Industries

Engineering for medical devices, robotics and consumer products.

All industries →
3D printed oxygen mask prototypes, medical device engineeringMedical & lab devicesDesign controls experience from Stryker. Lab instruments, test fixtures and validation builds. Custom 3D printed robot gripper jaws holding scissors, robotics engineeringRobotics & automationEnd effectors, grippers, fixtures and motion systems. Built and tested in our lab. Eco Soapr soap shredder render, consumer product design and engineeringConsumer hardwareCrowdfunded and retail products taken from concept to first production run.
Selected work

Hardware we have taken from sketch to shelf.

All work →
Rolling vinyl record cart render with a welded frame and sheet metal panels
Enclosures & industrialNeedle to Wax vinyl cartA rolling record cart with a welded steel frame, sheet metal panels and locking doors, built for a mobile record store.Released for fabrication, 2026
 IFTA Guard holding a fuel tax sticker on a red truck door
Consumer hardwareStickerguard IFTA GuardRugged acrylic and aluminum enclosure rated IP69K for washdown, with DFM and vendor management.IP69K rated, in production
 Calibra light bar mounted on a monitor in a dark desk setup
Consumer hardwareCalibra AI desk lightCrowdfunded light taken from concept to low-volume production and delivered to backers.Shipped to crowdfunding backers
How we work

Pricing you can plan around.

No surprise invoices. You see an estimate before anything is written in detail, and every phase has a ceiling.

Step 1EstimateA one-page range of hours and cost per phase. Free, within 3 business days.
Step 2Scope of workTasks, deliverables and risks per phase, with a not-to-exceed amount on each.
Step 3Build in phasesWeekly updates in your portal. Billed for actual hours, never above the cap without your signature.
Step 4Production handoffDFM-ready CAD, BOM, documentation and a contract manufacturer ready to quote.
How a project runs →
From clients

What it is like to work with us.

“Flores Engineering was the only firm who helped us not just through engineering but through production and web development.”
Matthew Smentkowski
Owner, Stickerguard
“Sergio did exceptionally well. Great technique, good iterations, fast delivery, amazing conversations.”
Filip Luchianenco
CEO, Calibra AI
“If you want your project done successfully, hire Flores Engineering.”
Gena Ghandour
Inventor
The lab

An in-house prototyping lab in Kearny, NJ.

Our Kearny lab turns CAD into parts the same week: FDM and SLA printing, desktop CNC and a bench for test rigs. Clients are welcome to visit.

Bambu X1C + H2SFormlabs SLACarvera CNCTest rigs & fixtures
Book a lab visit
3D printing farm with Bambu FDM and Formlabs SLA printers in our Kearny prototyping labPrototype mid-build with driver boards and wiringPrinted enclosure prototypes laid out on a cutting mat

Tell us what you are building.

Send a brief or a few sentences. You get an estimate within 3 business days.

Get an estimateBook a call