Product engineering studio · Texas

One small team building big user experiences.

From the circuit board to the user interface, we handle the whole product to create fantastic experiences for our clients and their customers.

Clayton's Fellos trading card Yuxuan's Fellos trading card Jordyn's Fellos trading card
build-your-own RC car·IoT bioanalyzer fleet·fab yield analytics·cartridge music player·community-building kiosk & app
Illustrated bedroom scene from the PK001 project kit box cover, drawn by Jordyn Bridge
Services

Five disciplines, hired together or separately.

We're no strangers to the many hats that product development requires a team to wear. We enjoy the variety of challenges that come with earing each one and we'd be happy to don them all to bring your project across the finish line.

Embedded firmware & electronics

Production firmware and board design for STM32 and ESP32 based projects, including work with BLE and NFC, secure elements, and battery products with real sleep-current budgets. Multi-layer KiCad boards taken through DRC, fabrication, and assembly.

Zephyr / STM32ESP32BLE · NFCKiCad → fablow-power

Mechanical design & mechatronics

Enclosures, chassis, and mechanisms CAD-modeled for CNC, laser cutting, and 3D printing including end-user-printable print-in-place parts to drive mechanics like steering and drivetrains.

CADenclosures · chassisprint-in-placemechanism designDFAM / 3D printing

IoT device fleets

Event-driven ingestion for data uploaded from field devices: parsing proprietary binary payloads, per-device remote access, staged environments for zero-downtime deployments.

AWS Step FunctionsLambda · S3Postgres / AuroraThingsBoardTerraform · IaC

Data pipelines & alerting

ETL and statistical process control that separates real excursions from noise. Prioritized, actionable alerts and analysis tooling engineers use to investigate yield drivers and root causes.

SPC (Nelson / WECO)serverless ETLautomated reportsdashboards

Apps, dashboards & UX

Research-driven interface design and production front ends: Flutter mobile apps, React and server-rendered TypeScript dashboards, and design systems that keep it all coherent as the product grows. Art-direction and illustration to show the customer rather than tell them.

FlutterReactTypeScriptFigma · design systemsuser researchcustom illustration
Recent work

Projects we can talk about.

Zomedica2021 – 2025
Veterinary diagnostics
AWS · Python · Postgres

Cloud platform for a fleet of diagnostic instruments

Design and implementation of cloud infrastructure behind a vetrinary rapid testing biosensor instrument platform, including field-device uploads of data and its processing into the database and the end-user applications that consume it.

  • Event-driven ingestion: S3 upload events → Step Functions → containerized Lambdas parsing proprietary binary result files
  • Experiment setup and results portals, saved-query tooling, and per-device remote access via the fleet's ThingsBoard instance
  • Operated across staging, production, and customer environments for four years, including major runtime upgrades
Zomedica bioanalyzer results portal showing the result search screen, with result data redacted
Results portal — result data redacted
Semiconductor manufacturing2020 – 2022
Yield analytics
AWS · Python · React

Yield-event detection and analytics for fab engineering teams

Built for semiconductor manufacturing teams: a system that watches production measurement data and tells engineers about anomolies early so they can reduce expensive rework.

  • Serverless ETL with batch orchestration across production lots; statistical process control (Nelson/WECO rules) for excursion detection
  • On-demand commonality analysis and plotting behind an API; weekly automated reports
  • React + Material-UI dashboard for investigating events and configuring notifications
Yield analytics dashboard showing a yield trend chart with model and judgement lines above an analysis results table
Gamma yield dashboard — sample data
Fellos (internal product)2023 – present
Connected hardware
Zephyr · GCP · Flutter

CTK-01 interactive kiosk and companion app

Design and implementation from vision to soon-to-be production of a physical-location based community building platform.

  • Zephyr RTOS firmware on STM32 with a BLE bridge, NFC (secure-element backed), and time-of-flight sensing
  • Multiple 4-layer KiCad boards through fabrication and assembly, including antenna matching
  • Flutter app with Firebase backend, plus cloud key infrastructure on GCP
Fellos companion app screens — activities, rewards, avatar builder, and trading cards
Fellos companion app
2-UP! (internal product)2025 – present
Consumer audio
ESP32 · KiCad

Battery-powered cartridge music player

Another dreamed-up-product in the works to help people connect through music: consumer device with honest low-power constraints: Bluetooth audio streaming, OLED, battery monitoring and charge detection, sleep-mode power management on custom boards of our own design.

3D render of the 2-UP! player PCB
2-UP! player board
Colorgrid PK001 (internal product)Project kit
1:28 RC car you build
ESP32 · CAD · 3D printing

Build-it-yourself remote-control car kit

A complete project kit around a 1:28 remote-control car for kids.

  • Print-in-place chassis with working steering and drivetrain, designed for home 3D printers
  • Custom car and controller board designs and firmware
  • Illustrated box art, instructions, display artwork all designed in-house
CAD render of the assembled PK001 remote-control car
PK001 car
Team

Small with purpose.

You work directly with the people doing the work. No account layer, no hand-offs.

Yuxuan, Clayton, and Jordyn together outside Chicha San Chen
Illustrated portrait of Yuxuan Hou

Yuxuan Hou

UI/UX Designer

MFA in Interaction Design, School of Visual Arts. Builds every pixel of our UI and keeps our ever-changing library of components and design tokens organized and easy to use while also running UI/UX research tests for the products we're working with.

Illustrated portrait of Clayton Bridge

Clayton Bridge

Founder & Principal Engineer

BSEE + MSEE, Texas A&M (analog/mixed-signal & RF IC design). Started in semiconductor engineering, then spent the last several years leading Stackfound and bringing user experiences to life for our clients and customers.

Illustrated portrait of Jordyn Bridge

Jordyn Bridge

Illustrator

If it's drawn on our products, Jordyn probably did it. She creates character designs, trading card asset packs, packaging artwork, and any other kind of artwork we need to help our customers engage with the products we build.

Contact

Let's talk about what you're building.

We love talking about projects and are always happy to craft a proposal for how we could help.

clayton@stackfound.com