Clients

Top Rated on Upwork. 100% Job Success.

Public-record receipts. Founders and CTOs across USA, EU, and APAC. Some quotes anonymized at client request.

04 · Client signal

What our clients say.

Verified reviews from Upwork. Top Rated, 100% Job Success Score across 28 jobs (13 completed, 15 active).

verified Upwork
Insights from completed jobs Solution Oriented 6 Committed to Quality 4 Clear Communicator 2 Collaborative 2 Reliable 1
EM
★★★★★
Hamza was an incredible partner. I lacked the hardware depth to make decisions…
IoT entrepreneurSmart Mirror · 2026
MS
★★★★★
Skilled and supportive engineer. Strong knowledge in embedded systems and sensor integration…
Sensor client3D tracking · 2026
LD
★★★★★
Effectively created and debugged firmware. Tackled challenges along the way…
Hardware founderSTM32 · 2026
RD
★★★★★
Worked through tricky Doppler radar implementation on an ESP32 platform. A solid engineer…
Radar startupESP32 · 2026
RD
★★★★★
Delivered quality work on time with excellent communication. Would hire again…
Display leadESP32-S3 · 2025
KC
★★★★★
Prepared KiCad sources, Gerbers, and BOM exactly as our manufacturer requested…
Manufacturing clientKiCad · 2025
SS
★★★★★
Stayed involved with regular updates and progress videos. Even contributed feedback outside the firmware scope…
Story Box founderNoor Story Box · 2026
B · Companies

Some of the teams we've built with.

10 active engagements
RFRAIN

RFID + IoT solutions for asset tracking and fleet management. We've contributed firmware and PCB work to their connected device line.

RF · IoTrfrain.com
swellframe

Product studio building hardware and software for emerging brands. Hardware engineering and embedded firmware support.

Studioswellframe.co
HeatGo

BLE-connected oil-boiler tracker with 2–3 year battery life. We delivered the firmware, PCB, and companion app integration.

Energy · BLEheatgo.com
Product Labs

Dutch product-development consultancy. Engineering partner on multiple connected-device projects across smart home and consumer.

Consultancy · NLproductlabs.nl
BURL STUDIOS

Creative studio working on hardware-meets-experience products. Embedded systems and PCB design contributions.

Studioburlstudios.com
jackjack

Consumer hardware brand. Embedded firmware, BLE provisioning, and OTA pipeline support across product revisions.

Consumergetjackjack.com
Mike Taggett

Independent inventor with a portfolio of consumer and outdoor products. Embedded firmware and PCB collaboration.

Inventormiketaggett.com
Ahorro Energía

Chilean energy-efficiency platform. We've contributed connected-device hardware and metering firmware to the platform.

Energy · CLahorro-energia.cl
Flexmanager

Operations and management platform. Hardware integration, PCB, and embedded firmware work on connected-device features.

Platformflexmanager.com
noor story

Screen-free audio storytelling box for children. Rotary-dial UI, single-button activation, 90+ pre-loaded stories. We delivered the firmware bringing the device to life.

Kids · Audionoor-story.com
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