WigertzTech
Product Development

Product Development

Complete physical products from idea to production. Hardware, software, enclosures, deployment — standalone or connected. One person, no handoff gaps.

Why Work With Me

Full product ownership — Sensor selection, compute platform, software, mechanical design, production tooling. No coordination between specialists.
Production experience — Shipped 1000+ units of my own product. Component selection, certification, factory setup, assembly line tooling.
Hardware flexible — Off-the-shelf platforms (Raspberry Pi, ESP32) for speed, or custom PCB when unit cost and form factor matter.
Connected or standalone — Not every product needs cloud connectivity. I build what the product actually requires, nothing more.

Timeline & Investment

Product with Off-the-Shelf Hardware
From 250k SEK / 6-10 weeks
(~23k EUR)

Complete product using proven platforms (Raspberry Pi, ESP32, etc.). Hardware integration, sensor selection, software, enclosures, documentation. Works for pilot runs, low-to-medium volume production, or proof of concept.

Product with Custom PCB
Adds ~150-250k SEK / 1-2 months
(~14-23k EUR)

When unit cost matters, you need a specific form factor, or regulatory requirements demand it.

Components and manufacturing billed at cost.

How We Work Together

1Scoping call

You describe the problem, I ask questions

2Proposal

Fixed price, clear deliverables, timeline

3Build

Regular updates, no surprises

4Handover

Working system, documentation, source code

What I Cover

Hardware & Sensors

Sensor evaluation and selection, compute platform selection (Raspberry Pi, ESP32, custom PCB), wiring and cabling design, power system design.

Mechanical & Enclosures

3D printed enclosures and mounts (PLA, PETG, Polycarbonate), CAD design for sensor mounts and brackets, aperture and clearance calculations, production-ready 3D print files with BOM.

Embedded Software & Firmware

FreeRTOS, bare-metal C, Linux-based systems, sensor drivers, signal processing and filtering, hit/event detection algorithms.

Application Software

React frontends, Node.js/TypeScript backends, real-time data streaming (SSE, WebSockets), diagnostic and development tooling, kiosk/display applications.

Connectivity (when needed)

BLE, WiFi, LoRa, Zigbee, Cellular. Mobile apps (React Native). Cloud backends. OTA updates. Not every product needs this — I add connectivity only when the product requires it.

Production & Deployment

CI/CD pipelines for SD card image generation, Docker containerization, bill of materials (BOM), assembly instructions, wiring diagrams, kit packaging specs, field testing support.

Prototyping & Tooling

3D printing (Bambu Lab X1 Carbon), soldering and rework, Dremel/rotary tool fabrication, rapid iteration on mechanical parts.

Previous Product Projects

Lifee Activity Bracelet - Product Image

Lifee - IoT Health Tracker for Children

Technical Founder & Lead Developer

Complete hardware/software from scratch. Custom PCB, BLE firmware, React Native app, OTA updates, CE certification, production line setup.

Outcome: Fully working product from scratch: 1000+ units shipped, measurable health improvements in 10+ schools

Invisense Radio Tests and Certification

Invisense - Advanced Humidity Monitoring System

Firmware & Application Developer

Complete firmware and application development for advanced non-invasive humidity monitoring in buildings. IoT sensors, React Native app, CE certification.

Outcome: Complete system with solid mobile app for non-invasive humidity measurement in buildings

Sparv ECG Unit PCB Design

Sparv Embedded - Wearable ECG Monitor Hardware Redesign

System Developer & Hardware Engineer

Complete hardware redesign for wearable ECG monitor. Added BLE connectivity, large storage capacity, new firmware development with C drivers.

Outcome: Successfully delivered updated hardware with BLE connectivity and expanded storage for wearable ECG monitoring

Project Images

Good Fit?

Yes:

  • • You need a working product, not a team to manage
  • • Timeline: weeks to months, not years
  • • Small-medium volume (10s to 1000s of units)
  • • Product spans hardware + software (not pure software)
  • • You want one person who owns the whole thing

Maybe not:

  • • You need ongoing staff augmentation
  • • High-volume consumer electronics (100k+ units)
  • • You already have a full hardware team and just need one specialist
  • • Pure software product with no hardware component (see /apps instead)
⚠️

Certification & Compliance

Certification work (CE/FCC/RED/etc) is billed hourly, not included in fixed project price. Lab timelines are unpredictable, and requirements vary significantly by product and market.

Ready to discuss your project?