Hire the Best Circuit Designers
in Sri Lanka

Seeking an expert to transform your idea into a market-ready product? Clients hire me for turnkey hardware and firmware solutions. Beyond PCB design, I handle sourcing, PCBA, and rigorous testing. I don't just send files; I build, debug, and deliver high-quality proven prototypes. I help startups, entrepreneurs, and engineering teams take products from concept → prototype → production. I support the full process, including product research, circuit design, schematic capture, PCB design, firmware development, prototype manufacturing, assembly, testing, debugging, validation, and production handoff. ---- Why clients hire me ---- ✅ I turn complex ideas into working products I take rough concepts, difficult requirements, or incomplete designs and turn them into practical, tested hardware. ✅ I stay involved until the design works I do not stop at schematics or PCB layout. I support bring-up, debugging, rework, firmware, validation, and design improvements so clients are not left with non-working prototypes. ✅ I handle compact and difficult PCB designs I am often brought in for very compact PCBs, custom PCB shapes, high-density layouts, RF boards, high-speed boards, analog signal chains, and power electronics, where careful design choices are critical. ✅ I reduce the client’s workload My team and I can support PCB manufacturing, component sourcing, assembly, firmware, testing, and small-batch production, so clients do not need to coordinate multiple vendors. ✅ I work well with technical teams I can join ongoing projects quickly, support existing hardware and firmware teams, and help move development forward without slowing things down. ---- Services I offer ---- 🔹 Complete product development — idea to prototype to manufacturing 🔹 PCB design — professional, compact, production-ready layouts 🔹 PCB review and verification — schematic review, layout review, design improvements 🔹 Circuit design and simulation 🔹 Firmware development — microcontrollers, processors, and Linux-based systems 🔹 Hardware bring-up, debugging, testing, and validation 🔹 Fixing boards that do not work properly 🔹 Prototype assembly and small-batch manufacturing 🔹 3D CAD support / enclosure coordination ---- PCB design expertise ---- I design PCBs across a wide range of domains, including: ▪ High-speed PCB design ▪ High-density / compact PCB design ▪ RF PCB design ▪ Analog PCB design ▪ Power electronics PCB design ▪ IoT hardware design ▪ Custom-shape and space-constrained PCB layout ▪ Multi-board systems and interconnect design I focus on clean layout, manufacturability, reliability, and real-world performance. ---- Firmware and embedded systems ---- I provide professional firmware development as a standalone service or as part of a full product build. Platforms and families I work with include: ▪ STM32, ESP32 / ESP-IDF, Arduino ▪ TI C2000 / Code Composer Studio ▪ PIC / Atmel / SAMD ▪ FPGA / SoC systems ▪ Linux-based embedded systems ▪ Single-board computers, microprocessors, and controllers Languages: ▪ C / C++ ▪ MicroPython ▪ JavaScript / embedded scripting ▪ Assembly when needed ---- Tools and software ---- PCB Design: ▪ Altium Designer ▪ KiCad ▪ EasyEDA Embedded / Firmware: ▪ STM32CubeIDE ▪ ESP-IDF ▪ Arduino IDE ▪ Code Composer Studio Simulation / Engineering Tools: ▪ LTspice ▪ Proteus ▪ HFSS ▪ Multisim ▪ LabVIEW GUI / Display Frameworks: ▪ LVGL ▪ TouchGFX ---- Interfaces, protocols, and technologies ---- Interfaces: ▪ SPI ▪ I2C ▪ UART ▪ CAN ▪ I2S ▪ USB ▪ Ethernet ▪ MIPI-CSI / MIPI-DSI ▪ LVDS ▪ FMC ▪ Memory interfaces Wireless / Connectivity: ▪ WiFi ▪ BLE ▪ LoRa ▪ GPS / GNSS ▪ LTE / GSM ▪ NFC ▪ UWB Protocols: ▪ MQTT ▪ HTTP ▪ FTP ▪ TCP/IP ▪ UDP ▪ SSL/TLS Operating Systems: ▪ FreeRTOS ▪ TI-RTOS ▪ Embedded Linux ---- Specializations ---- 🔸 Power Electronics — DC-DC converters, MPPT, motor control, BMS, power supplies 🔸 RF Design — 2.4 GHz to 77 GHz, radar systems, filters, mixers, antennas 🔸 High-Speed Design — USB, LVDS, FMC, memory and fast digital interfaces 🔸 Analog Design — signal conditioning, ADC interfacing, filtering, measurement circuits 🔸 Embedded Product Development — concept to tested prototype to production 🔸 Testing and Debugging — hardware issues, prototype failures, bring-up and validation ---- Testing, validation, and manufacturing support ---- One of the biggest advantages I offer is hands-on validation. My team and I support: ▪ In-house bring-up and testing ▪ Prototype debugging and rework ▪ Small-batch PCB assembly ▪ Automatic pick-and-place assembly ▪ Reflow soldering ▪ Component sourcing and fabrication coordination Let’s talk If you need help with PCB design, embedded systems, firmware development, RF design, power electronics, debugging, prototype testing, or taking a product to production, I’d be glad to discuss your project.

Stop wasting time on boards that don't work. I design manufacturing ready, multi-layer PCBs that bring your electronic products to life. I am a professional Embedded Systems Engineer specializing in high quality schematic capture and PCB layout. Whether you need a simple 2-layer prototype or a complex multi-layer industrial board, I ensure your design is optimized for both performance and Design for Manufacturing (DFM) to keep production costs low. Core Expertise: ✅PCB Layout: High-speed digital, precision analog, and power electronics (Multi-layer). ✅Hardware Integration: Extensive experience with ESP32, STM32, Arduino, and LoRa. ✅Schematic Design: Component selection, circuit simulation, and custom library management. ✅Manufacturing Files: Full production packages (Gerber X2, BOM, Pick-and-Place, 3D STEP). ✅Industry Tools: Expert proficiency in KiCad, Altium Designer, and Autodesk Eagle. Why work with me? ✅ Manufacturing Ready: I don't just "draw" boards; I design them to be built according to IPC standards. ✅ Fast Turnaround: Clear communication and strict adherence to your project deadlines. ✅ Post-Delivery Support: I provide technical support until your board is successfully fabricated and assembled. Let’s discuss your project requirements. Send me a message or click "Invite to Job," and I’ll provide a quick initial review of your concept!

I transform your high-risk hardware concepts into stable, manufacturable products that work on the first spin. By combining advanced PCB design with my in-house assembly and testing lab, I eliminate the 3-week delay and technical uncertainty of traditional prototyping cycles. Services ✅Advanced Schematic Design: Hierarchical, well-documented circuit blueprints designed for clarity and debuggability. ✅Multilayer PCB Layout: Precision routing up to 12 layers with controlled impedance and length matching. ✅High-Speed Interfaces: DDR4, USB 3.1, HDMI, and PCIe layout following strict transmission line physics. ✅Power Electronics: DC-DC converter optimization (Buck/Boost), high-current pathing (up to 50A), and thermal dissipation. ✅Mixed-Signal Design: Protecting sensitive analog sensor data from high-speed digital noise via proper partitioning. ✅RF and Antenna Integration: BLE, Wi-Fi, and LoRa antenna matching and layout for maximum range. ✅Design for Manufacturability (DFM): Comprehensive review of footprints, solder mask, and drill tables to ensure high factory yields. ✅Hardware Design Review: Third-party analysis of your existing boards to find and fix stability or EMI issues. ✅Bill of Materials (BOM) Scrubbing: Optimizing for cost, lead time, and production volume. ✅In-House SMT Assembly: Small-batch production (1–100 units) on my professional pick-and-place line. ✅Bring-Up and Validation: Power rail verification, signal probing, and thermal mapping of the first physical prototypes. ✅Test Fixture Design: Custom "Bed-of-Nails" jigs for your production line. ✅Legacy PCB Reverse Engineering: Modernizing obsolete boards with currently available components. Specializations 🎯High-Speed Digital Layout (DDR4, USB 3.x, PCIe) 🎯Power Integrity & PDN Optimization 🎯EMI/EMC Aware Design & Mitigation 🎯Design for Manufacturability (DFM) 🎯Multilayer PCB Stackup Architecture 🎯Precision Analog & Mixed-Signal 🎯IoT & Ultra-Low Power Wearables 🎯Rigid-Flex & Flexible PCB Design 🎯Thermal Management & Heat Dissipation 🎯Small-Batch PCBA Manufacturing Process ⚙️Requirement & Risk Assessment: I begin by analyzing your technical specifications and identifying potential "deal-breakers" in EMI, power, or component lead times. ⚙️Architecture & Schematic Capture: I build a logical, hierarchical schematic and perform initial BOM scrubbing to ensure all parts are in production. ⚙️Stackup & Layout Engineering: I design the layer stackup for impedance control and route all signals using simulation-led SI/PI best practices. ⚙️DFM/DFT Verification: I run a comprehensive audit against 100+ manufacturing rules to ensure your board is ready for the assembly line. ⚙️Prototyping & Assembly: I manufacture the first physical units in my in-house lab, allowing for immediate physical validation. ⚙️Bring-Up & Bench Testing: I power on the boards, verify every voltage rail, and probe critical signals to ensure they meet your specs. ⚙️Handover & Support: You receive the full source files, manufacturing pack, and a "Bring-up Guide" to help your firmware team get started immediately. Tools/Stack 🔧EDA: Altium Designer (Primary), KiCad, EasyEDA, LT Spice, Solidworks, Onshape 🔧Lab: 4-Channel 500MHz Oscilloscope, Spectrum Analyzer, Logic Analyzer, Thermal Camera, SMT Pick-and-Place line Great fit if… 🤝 You are a startup needing a partner who can build working hardware, not just deliver files. 🤝 You have a high-complexity design (DDR, USB, HDMI) that requires precision layout. 🤝 You need a "turnkey" solution from design through small-batch production. 🤝 You have an existing design that is failing EMI/EMC or has stability issues.

Hello! I'm a Design Engineer with over 9 years of experience specializing in M&E (Mechanical & Electrical) system design for commercial, residential, and large-scale buildings. I hold a Bachelor's degree in Electrical and Electronic Engineering and have had the opportunity to work with some of the most reputable companies in the construction and design industry. My expertise spans across various aspects of electrical installation system design, including calculations and design for plumbing, fire protection, HVAC, CCTV, and lighting systems for buildings using AutoCAD and Revit Drawings. Here are the services I provide: • Lighting Design: Using Dialux EVO/AGI 32 software for accurate and efficient lighting designs for buildings. • Electrical Lighting and Power Plans: Comprehensive plans tailored to your project’s specific needs. • Cable Selection and Voltage Drop Calculation: Ensuring optimal performance and safety. • MCB/MCCB Selection: Appropriate selection for building safety and compliance. • Electrical Demand Calculation: Accurate calculations to meet building requirements. • Lighting Protection System Design: Protect your building from lightning strikes with my effective designs. • Solar PV System Design and Simulation: Utilizing PVSyst and PVSol for reliable solar solutions. • RESCheck / COMCheck Compliance: Ensuring your project meets all necessary energy codes. • ETAP Simulations: Advanced electrical power system analysis. • EPLAN Panel Drawings: Detailed and accurate panel drawings. • Electrical Single Line Diagrams (SLD): Clear and detailed SLDs for your projects. • Plumbing System Design: Efficient and effective plumbing system solutions. • HVAC System Design: Customized HVAC designs to meet your building’s needs. • Fire Protection and Detection System Design: Ensuring safety and compliance with reliable designs. • MEP Quantity Take-off (BOM): Detailed Bill of Materials for precise project estimation. Why Choose Me? With a strong background in electrical and electronic engineering and hands-on experience in M&E design, I am dedicated to delivering high-quality designs that meet all regulatory standards and client expectations. My comprehensive approach ensures that all aspects of a project are meticulously planned and executed, providing you with reliable and efficient solutions. Let's bring your project to life with precision and excellence. Contact me today to discuss how I can contribute to your success!

I am an Graduate Electrical Engineer from Sri Lanka. Currently serving as a Electrical Design Engineer in Building services field for 05 years. My experience includes Medium rise Office buildings, Medium rise Luxury apartments, Shopping complexes, factories and more. Moreover I have been Collaborating with International Clients from USA, UK, Australia. For your projects I can be an ideal designer and a consultant in the following, Electrical design for your residential / commercial / Industrial Building - Electrical layout / Design drawing, Shop drawings and etc - Selection of circuit breaker, fuse, cables and etc - Single Line diagram (Main Panel , Sub panel, Distrbution board etc) - Load distribution chart Lighting desing for your residential / commercial / Industrial Building (using Dialux Evo) - Lighting layout with proper calculations ( lux level , reflections , daylight etc ) - Selection of luminaries ( Light sources ) - 3d visualisation of the building with Luminaries

Electronic Engineer with 5+ years of experience in Analog, Digital and Mixed signal Electronics. Experienced in Embedded Hardware Design, Firmware architecting and Firmware Development in C/C++ (ZephyrRTOS, FreeRTOS and bare-metal) for Microchip AVR, STM32, Ti C2000, Nordic nRF53/52 and ESP32 platforms. Delivered products with 6+ layers for industrial and automotive aplpications. Current work: Automotive software, ASPICE, C++ development