Hire the Best Electronic Designers
in Sri Lanka

Have a mechanical component, assembly, or product that needs to be properly designed and clearly documented? I can help with that. I'm Sameth, a Mechatronics Engineer based in Sri Lanka with 4 years of experience in mechanical design and CAD. I work with engineers, product designers, and small businesses to turn ideas and rough concepts into detailed, manufacturable designs. What I typically work on: 3D part and assembly modeling — designed with manufacturing in mind Technical drawings with tolerances and annotations, your supplier can work from Mechanism design, motion studies, and sheet metal components DFM reviews to catch potential issues before production 3D printing — prototypes and functional parts when needed, in FDM or SLA Tools I use: SolidWorks · Autodesk Inventor · Fusion 360 · AutoCAD I'm SolidWorks-certified, hold a diploma in AutoCAD, and take communication and accuracy seriously on every project — whether it's a single bracket or a full product assembly. Feel free to message me with your project details, and we can take it from there.

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.

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.

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!

Hello, I'm Dulanga. I will make your IDEA 💡 into a REAL PRODUCT 💲💲 using cutting-edge CAD technology and years of experience in mechanical design engineering and manufacturing. My normal process of product development is as follows; ✔️ Gathering customer requirements ✔️ Engineering point-of-view and feasibility study ✔️ Concept development ✔️ Detailed CAD development ✔️ Engineering evaluation ✔️ Prototyping Please 𝐈𝐍𝐕𝐈𝐓𝐄 me and drop me a message, I will reply shortly. THANK YOU . Brief about myself ⭐ BSc. Mechanical Engineering Degree specializing in Mechatronics ⭐ Member of Local and Global engineering bodies ⭐ Solidworks Expert ⭐ Machine Designer What will you get ⭐ Engineering Drawings for Fabrications ⭐ Bill Of Material ⭐ Detailed CAD Part & Assembly Files ⭐ FEA & CFD Based Product Analysis ⭐Realistic Renderings ⭐Online Sourcing Tools ⭐ Solidworks Premium ⭐ Ansys Fluent ⭐ Keyshot ⭐ Matlab ⭐ Bambulab Studio ⭐ Solidworks Simulation ⭐ Solidworks Motion Analysis ⭐ Autodesk Inventor ⭐ Autodesk AutoCAD ⭐ Festo Fluidsim ⭐ MasterCAM ⭐ SolidCAM Prototype Fabrication ⭐3D Printing ⭐CNC Machining ⭐Sheet metal laser cutting and bending ⭐Weldments Completed Projects ✔️Precision metal parts for CNC machining ✔️UAV / Drone ✔️Gear Boxes ✔️Patented Products ✔️Automotive components ✔️Mixers ✔️Robots ✔️Consumer Electronic Enclosures ✔️3D Printing Parts ✔️Mechanical Designs ✔️Innovative Produts ✔️AND MORE...

✅ Are you looking for an Electrical Estimator or Low Voltage Estimator? ✅ Do you want to save your precious time on Electrical Estimation works? ✅ Are you keen on hiring a remote Electrical Estimator for your organization? ✅ Interested in increasing the Electrical project winning chances? I'm here to help you out & fulfill your complete Electrical estimation & Low Voltage estimation needs with 10+ years of career experience and 500+ successful Electrical Tender Bidding projects for US, Australian, UK, & Middle Eastern countries clients. 🎯 Why should you choose me? ● Top rates plus freelancer - selected among the best 3% of freelancers ● 300+ successive Electrical Estimation project completions and 1000+ hours of effective service ● High-quality Electrical Estimator services for an affordable cost ● Strong technical background in Electrical and Low Voltage systems design and installation ● Work performed with reference to your local codes (NEC 2020, BS 7671, and AS/NZ 3000) ● Fluent in Autocad, PlanSwift & Bluebeam software 🎯 Offered Services: ● Electrical Tender Bidding Services - Electrical, Telecom, Security, Access Control, and Fire Alarm systems ● Generate Electrical Quantity Take-off(QTO) & Bill of Material (BOM) ● Create Electrical Bill of Quantity (BOQ) ● Estimate Labor against work done for Electrical & Low Voltage systems ● Tender bid evaluation & Cost review ● Tender bid site management - Bluebook, Planhub, Buildtrend, Construct Connect 🎯 Professional Summary ● Academic Background - a. MEng. Electrical & Electronic Engineering (Hons), UWE (UK) b. Certificate in MEP QS, Vocational Training Authority (SL) ● Professional License - MIET (UK) (registration no: 1100974165) ● Career Experience - 8+ years as an Electrical Designer & Electrical Estimator ● Successful Client base - USA, Canada, Australia, UK, UAE, Qatar, Saudi Arabia ● Turnaround time - Typically 2-3 days 🌐 Electrical Estimation Service Rendered Countries: ● United States of America (USA) ● United Kingdom (UK) & Ireland ● Australia & New Zealand ● Saudi Arabia ● United Arab Emirates ● Qatar ✅ Successful Project Portfolio: ● Residential & Retail Projects - Completed 150+ projects ● Commercial Building Projects - Completed 60+ projects ● Large-scale infrastructure Projects - Completed 40+ projects ● Industrial warehouse and factory Projects - Completed 10+ projects ● Institutional Projects - Completed 40+ projects You may drop me a private message through Upwork chat to get connected. I'll get back to you as soon as possible with quality results that satisfy your needs. Client satisfaction shall be my priority.