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Anthony C.

Anthony C.

Embedded Firmware Engineer | STM32, ESP32, Bootloaders, IoT & BLE

I'm an electrical engineer with 10 years of experience building and fixing embedded firmware for production hardware. I work in C and C++ on STM32, ESP32, Microchip, Atmel, and other ARM Cortex-M microcontrollers, on both bare-metal and RTOS systems including FreeRTOS and Zephyr. Clients usually bring me in for one of these: • Firmware bugs that are hard to pin down: lockups, timing problems, data glitches, communication failures • Bootloaders and field firmware updates (OTA) that can't brick a device • Adding features or porting firmware to new hardware without breaking what works • Connected devices: BLE, Wi-Fi, cellular, GPS, and MQTT • Sensor integration, calibration, and board bring-up • Design reviews and taking over inherited or stalled projects Because I'm an electrical engineer, I debug at the boundary between hardware and firmware with a scope, logic analyzer, and debugger, so I can tell whether a problem is in the code, the configuration, or the board. I've shipped a cellular and GPS device end to end, built field-update systems for products already deployed, and led the modernization of a large legacy firmware codebase. I communicate clearly, document what I change, and work fluently in both English and Spanish.

🇺🇸Reno, United States$60/hr80% JSS5.00 (10)Since Feb 2026

Earnings and projects

MRR
$3.2k

Last 6 months ÷ 6

World#11,352 / 412k
🇺🇸Country#3,130 / 62.1k
Revenue, last 30 days
$7.1k

Last 6 months: $19k

World#2,927 / 412k
🇺🇸Country#1,139 / 62.1k
Total earnings
$21k

Billed in all: $21k

World#137,151 / 412k
🇺🇸Country#22,846 / 62.1k
Per project
$1.5k

$1.5k in the last 6 months

World#95,318 / 412k
🇺🇸Country#16,169 / 62.1k
Projects, last 6 months
13
69% fixed31% hourly
World#12,442 / 412k
🇺🇸Country#2,014 / 62.1k
Projects in all
14

Across 15 contracts

60% fixed40% hourly
World#168,286 / 412k
🇺🇸Country#24,151 / 62.1k

Earnings, last 30 days

$21.1k+$7.1k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$10k$15k$20k$25kOct 9Oct 24Nov 8

Skill rankings: #1 in 1 skill of 20

Rarest: top 4% in C, of 1,974. Ranked by MRR among everyone on Upwork with the skill.

  1. 1PIC3215 freelancers · 🇺🇸 #1Top 7%
  2. #5Real-Time Operating System71 freelancers · 🇺🇸 #2Top 7%
  3. #6CAN Bus61 freelancers · 🇺🇸 #3Top 10%
  4. #16FreeRTOS200 freelancers · 🇺🇸 #4Top 8%
  5. #25MQTT252 freelancers · 🇺🇸 #3Top 10%
  6. #27Embedded Linux360 freelancers · 🇺🇸 #5Top 8%
  7. #28Bluetooth244 freelancers · 🇺🇸 #4Top 11%
  8. #29Firmware Programming418 freelancers · 🇺🇸 #6Top 7%