PGParthraj Gohil
About Expertise Work CoreFragment Writing Contact
Available for firmware & IoT engagements

Firmware for hardware that has to work.

I'm Parthraj Gohil — an embedded systems and IoT architect with 15 years turning silicon into shipping products: RTOS firmware, wireless connectivity, and secure device-to-cloud systems. Founder of CoreFragment.

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01

About

I design and write the firmware layer where physics meets software — the code that runs on a microcontroller, talks to sensors and radios over SPI, I2C and UART, and carries data reliably all the way to the cloud.

Over the past fifteen years I've shipped more than two dozen connected products across industrial IoT, consumer devices, medical, and critical-infrastructure monitoring — as a hands-on engineer, a firmware architect, and a team lead. The work ranges from a BLE driver inside a VR headset to encrypted asset-tracking networks and low-power wide-area devices on Amazon Sidewalk and LoRaWAN.

Today I run CoreFragment, my firmware and IoT engineering practice, where I help companies take hardware from prototype to production.

FocusEmbedded · IoT · Firmware
Experience15 years
M.TechSoftware Systems, BITS Pilani
B.E.Electronics & Comm. Engg.
VentureCoreFragment
Based inIndia · works globally
15
Years in embedded
25+
Products shipped
6+
Wireless stacks
Lead
Architect & team lead
02

Expertise

Firmware & RTOS

  • Zephyr
  • TI-RTOS
  • VxWorks
  • Nordic SoftDevice
  • FreeRTOS
  • Bare-metal

Wireless & connectivity

  • BLE / BLE5
  • Wi-Fi
  • LoRaWAN
  • Amazon Sidewalk
  • Cellular (BG96)
  • RF / mesh

Silicon & modules

  • Nordic nRF52 / nRF51
  • TI CC26xx / CC3200
  • STM32
  • Laird Pinnacle / BL600
  • Qualcomm XR2
  • NXP i.MX6

Protocols & buses

  • SPI
  • I2C
  • UART
  • Modbus
  • RS-485
  • MQTT
  • RTP / RTSP

Cloud & edge

  • AWS IoT Core
  • AWS Lambda
  • Secure device↔cloud protocols
  • OTA updates
  • Edge data pipelines

Mobile & OS

  • Android OS / HAL
  • Android RIL
  • BLE companion apps
  • Linux (embedded)
  • C / C++ / Python
03

Selected work

A sample of shipped products and engagements. Client names are withheld under NDA; the engineering is described by domain.

Spatial computing/01

AR/VR controller tracking

Built the BLE-HID driver and controller firmware linking a motion peripheral to an XR headset, plus a time-sync algorithm that keeps sensor data aligned for positioning.

PlatformQualcomm XR2 · nRF52840
StackAndroid · Zephyr · BLE HID
RoleFirmware / driver
Industrial IoT/02

Asset-tracking network

Architected battery-operated trackers and cellular gateways with an encrypted device-to-cloud protocol over MQTT. Led a four-engineer team from architecture to production.

PlatformnRF52840 · BG96 cellular
StackZephyr · AWS IoT · Lambda
RoleArchitect · team lead
Infrastructure safety/03

Structural monitoring

Vibration- and tilt-monitoring device for buildings and critical structures, with encrypted on-device storage and BLE5 retrieval — designed to warn authorities before failures cost lives.

PlatformLaird Pinnacle 100 (nRF52)
StackZephyr · accelerometer DSP
RoleFirmware architect
Digital health/04

Connected glucometer

A BLE blood-glucose meter and companion app that streams readings, reminds patients to test, flags abnormal results, and shares reports with clinicians.

PlatformLaird BL600
StacksmartBASIC · BLE UART · Android
RoleFirmware + mobile
Consumer IoT/05

Low-power wide-area devices

Connectivity firmware for low-power consumer devices on Amazon Sidewalk and LoRaWAN — provisioning, long-battery operation, and reliable uplink in noisy RF environments.

PlatformNordic · Semtech LoRa
StackAmazon Sidewalk · LoRaWAN
RoleFirmware / connectivity
Connected buildings/06

Smart water management

Firmware for a connected plumbing and water-management product line — sensing, Wi-Fi connectivity, and cloud reporting for commercial fixtures.

PlatformWi-Fi SoC · cloud
StackEmbedded C · MQTT
RoleFirmware consulting
My practice

CoreFragment

CoreFragment is my firmware and IoT engineering practice. I partner with hardware teams and founders to take connected products from prototype to production — the firmware, the wireless link, and the path to the cloud — without the project stalling on the hard embedded problems.

Visit corefragment.com
What I take on
  • Firmware architecture & development on constrained MCUs
  • BLE, Wi-Fi, LoRaWAN & Sidewalk connectivity
  • Secure device-to-cloud protocols and OTA
  • Bringing up new silicon & board bring-up
  • Power optimisation for battery-operated devices
  • Technical leadership for embedded teams
04

Writing

Notes · coming soon

I'm starting to write about firmware architecture, wireless connectivity, and what it actually takes to ship hardware. Posts will land here.

Get notified

Let's build something.

Have a connected product that needs firmware, a wireless problem, or a prototype to get to production? Tell me about it.

CoreFragment ↗ LinkedIn ↗