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Selected work · team experience

Work our team has shipped.

A selection of embedded, Linux, and hardware projects delivered by engineers on our team.

01 / Embedded Linux · IoT & Networking · Fleet management

Cloud-managed OpenWRT firmware across 8 SoC platforms

Duration · Multi-year engagement

Team · Firmware lead + supporting engineers

OpenWRTAndroid 11BCM2711MT7621/7981/7986/7988RZ-G2NIPQ5018MT6877Quectel RM/EC/EM 4G/5GMQTTREST APIsCustom Linux drivers

The client

An enterprise networking product company shipping a family of wireless gateways and 4G/5G routers, with a growing installed base of customer-deployed devices across multiple markets.

The challenge

The product line had grown to six commercial SKUs built on eight different SoC families — a firmware maintenance nightmare. Each product needed its own OpenWRT (or Android 11) build, 4G/5G modem integration, and network stack tuning. On top of that, the business needed a way to remotely manage thousands of devices in the field: push configuration, roll OTA updates, monitor health, and inspect traffic when things went wrong.

What we did

  • Built and maintained OpenWRT firmware across all eight SoC platforms with shared BSP components where possible and product-specific overlays where needed
  • Integrated Quectel RM, EC, and EM series 4G/5G modems using custom Linux drivers, tuning throughput and connection stability across regions
  • Designed enterprise-grade network configurations — custom firewall rules, VPN tunneling, MQTT telemetry, and REST-based remote management
  • Architected and led development of a centralized cloud controller for remote fleet management — configuration, firmware rollout, and health monitoring at scale
  • Implemented OTA update flows, real-time device health monitoring, and packet-level inspection tooling for field diagnostics

Outcome

  • 6 commercial products shipping in production
  • 1000+ device fleet under centralized cloud management
  • Unified firmware architecture reducing per-product maintenance overhead

02 / Embedded Linux · Board bringup · High-precision positioning

Embedded Linux BSP from scratch for a rugged GNSS receiver

Duration · ~8 months

Team · 1 firmware engineer + hardware team

Rockchip RK3399TI AM3354U-BootLinux kernelCustom BSPRTKLIBMass-production flashing

The client

A precision-positioning hardware company building rugged GNSS receivers and Continuously Operating Reference Station (CORS) base stations for surveying and geodetic applications.

The challenge

The client needed a production-ready embedded Linux stack on two different SoC families — Rockchip RK3399 for higher-end units and TI AM3354 for cost-sensitive variants — with GNSS-grade timing behaviour, sub-meter positioning accuracy, and a reliable path from factory flash to shipped product.

What we did

  • Performed full board bringup on both Rockchip RK3399 and TI AM3354 platforms
  • Customized U-Boot and the Linux kernel, and built a BSP from scratch for each platform
  • Wrote custom drivers for the GNSS front-end and peripheral hardware
  • Ported and integrated RTKLIB, tuning real-time kinematic processing to hit sub-meter accuracy
  • Automated the firmware flashing pipeline for mass production

Outcome

  • Two SoC platforms brought to production-ready state
  • Sub-meter GNSS accuracy achieved on rugged hardware
  • Factory flashing fully automated for volume manufacturing

03 / Hardware Engineering · High-speed PCB · Medical imaging

High-speed hardware for a 128-channel medical ultrasound scanner

Duration · ~18 months

Team · Hardware/PCB team member

AltiumHyperLynx (SI / PI / thermal)Multilayer high-speed PCBEMI/EMC compliance

The client

An electronics R&D institute developing a next-generation 128-channel medical ultrasound scanner intended for clinical imaging deployment.

The challenge

128-channel ultrasound imaging is one of the most demanding problems in medical electronics — huge data bandwidth, tight power-integrity budgets across multiple rails, thermal management inside a compact enclosure, and full medical-grade EMI/EMC compliance. Any signal-integrity issue becomes a respin, and any respin at this complexity is expensive.

What we did

  • Designed a 16-channel SONAR beamformer board as part of the 128-channel system
  • Owned power-rail design for the ultrasound system — multiple regulated rails with tight noise budgets
  • Ran signal integrity, power integrity, and thermal analysis using HyperLynx before committing to fabrication
  • Applied high-speed design discipline throughout — controlled impedance, careful stackup planning, return-path integrity
  • Prepared the design for EMI/EMC compliance testing

Outcome

  • Beamformer boards validated and integrated into the scanner system
  • Power-rail architecture delivered and demoed as a standalone reference design
  • Methodology transferable to future high-channel-count medical imaging work

04 / Hardware + Firmware · Medical devices · Field-return debugging

Evolving a medical diagnostic device from single- to dual-camera

Duration · ~4 months

Team · 1 hardware/firmware consultant

Custom medical hardwareEmbedded firmwareDual-sensor optical pipeline

The client

A medical device company that ships rapid diagnostic test (RDT) analyzers used in clinical and point-of-care settings.

The challenge

The existing single-camera RDT reader had accuracy limitations and a stream of field returns tying up support. The team wanted to evolve to a dual-camera design for better image capture — without a full redesign that would disrupt production, invalidate certifications, or require a new enclosure.

What we did

  • Redesigned the optical and sensor sub-system for dual-camera acquisition within the existing form factor
  • Modified embedded firmware to drive both sensors, synchronize capture, and hand off the dual image stream to the analysis pipeline
  • Ran root-cause investigations on field-returned devices spanning hardware, firmware, and manufacturing process

Outcome

  • Two-camera RDT system delivered as a drop-in evolution of the existing product
  • Field-failure root causes identified and addressed in the new revision
  • Cleaner debugging methodology for future field returns

05 / Hardware Engineering · Manufacturing · Cost-optimized product design

Ground-up hardware for a dairy-industry milk collection & analysis system

Duration · In progress

Team · Hardware lead + collaborating firmware engineers

Custom PCBSensor integrationCost-optimized BOMManufacturing & assembly

The client

A stakeholder in North India's dairy ecosystem building a milk collection and analyzer machine.

The challenge

The dairy market is deeply price-sensitive — every rupee in the BOM directly affects the client’s ability to compete. The client needed a full product design that would work reliably in Indian dairy collection environments, be cheap enough to hit an aggressive margin target, and be manufacturable at volume.

What we did

  • Owned end-to-end hardware design for the collection and analyzer machine
  • Managed component procurement, working suppliers and alternates to hit the BOM target
  • Set up manufacturing, assembly, and test flows suitable for the client’s production plan
  • Partnered with firmware engineers on the team to deliver the complete product

Outcome

  • Hardware design delivered and moving through manufacturing
  • BOM optimized to protect client margin in a competitive market segment
  • Complete product stack delivered under one team

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