Embedded-systems specialist with 8 years building real-time, high-reliability hardware & firmware for industrial, aerospace-adjacent, and IoT products — from concept to production. I thrive at the intersection of robust electronics, deterministic software, and factory-floor automation.
| Domain | Highlights |
|---|---|
| Firmware & RTOS | C/C++, FreeRTOS, Zephyr |
| MCUs & SoCs | STM32, ESP32, Nordic nRF, PIC, AVR |
| Connectivity & Protocols | UART / SPI / I²C, Modbus, CAN/CANopen, MQTT, BLE, Wi-Fi |
| PCB Design | Multilayer boards (Altium, Proteus), EMC-aware layouts |
| Full-Stack & Apps | HTML, CSS, JavaScript, Python, C# (.NET Framework / Core), MS SQL |
| Build / Toolchain & DevOps | Visual Studio (C++/C#), VS Code (C/C++/Python, PlatformIO/ESP-IDF/Nordic nRF SDK), PyCharm, SQL Server Mgmt Studio, Cloudflare |
| Automation & SCADA | Siemens S7 PLCs, TIA Portal (Ladder Logic), WinCC, Factory I/O |
| CAD & Simulation | SOLIDWORKS, MATLAB |
Electronics Engineer / Software Developer — HITEC Sensor Developments (Pvt.) Ltd.
Research and Development Department — Sep 2023—Present
- Lead firmware architecture for industrial-grade sensor platforms (STM32 & Nordic nRF) with aerospace-adjacent applications.
- Design EMI-robust multilayer PCBs (Altium) and automated calibration rigs (Controlling Pneumatic & Hydraulic Systems using ESP32).
- Deliver MQTT/Bluetooth-enabled devices with MS SQL-backed diagnostics.
- Implement Wi-Fi OTA pipelines and serverless alerting with Cloudflare Workers.
- Automation Consultant — Arthur C. Clarke Institute for Modern Technologies (2021—2023)
Deployed Siemens PLC/SCADA solutions and trained engineers. - Freelance Embedded & PCB Designer (2018—2021)
Delivered custom multilayer PCBs, real-time C/C++ firmware, and CAD assemblies for robotics, IoT, and industrial clients. - Robotics Researcher — University of Moratuwa (2017—2018)
Investigated soft tactile sensors and autonomous grasping; built gripper prototypes and control firmware for academic projects.
Development and Characterization of a Soft Tactile Sensor Array Used for Parallel Grippers — IEEE MERCon (Moratuwa Engineering Research Conference) 2018.
Hall-effect based tactile sensing for robotic grippers with real-time deformation mapping.
- M.Sc. Mechanical Engineering — University of Moratuwa
- B.Sc. Mechanical Engineering (Hons.) — University of Moratuwa
💌 don.lakmal.weerasinghe@outlook.com
🔗 LinkedIn
“Talk is cheap. Show me the code.” — Linus Torvalds