Hire the Best Circuit Designers in Vilnius, LT

Hello! 👋 I’m an Electronics Engineer with 10+ years of experience in embedded systems, PCB design, and hardware development — from concept to working prototype and production-ready solutions. My expertise includes: • Embedded hardware & firmware development • Low-power BLE devices and wearable electronics • PCB design for microcontrollers, sensors, RF, and high-speed interfaces • RF and antenna design • Power management and battery-powered systems • Prototype development and hardware debugging • Compact enclosure and product integration Tools I work with: 🔹 Altium Designer 🔹 CST / Ansys / Comsol 🔹 Fusion 360 / Inventor 🔹 Circuit simulation and signal analysis tools I also have hands-on experience with rapid prototyping technologies including 3D printing, CNC milling, and small-scale production preparation. I focus on building reliable, efficient, and well-engineered products with clear communication and attention to detail. Let’s build something great together. 🚀 〰〰〰〰〰〰〰〰〰 Essential Services 〰〰〰〰〰〰〰〰〰 ✔ PCB layout. ✔ Hardware Design. ✔ Electrical and Electronic Engineering. ✔ Robotics. ✔ Prototypes. ✔ Conceptualizing electronic projects. ✔ Internet of Things projects. ✔ Embedded Systems. ✔ Designing compact enclosures for devices. 〰〰〰〰〰〰〰〰〰 Applications 〰〰〰〰〰〰〰〰〰 ✔ Boost converter/buck converter. ✔ DC-DC Converters / AC-DC Inverters ✔ High-precision measurement system with various sensors. ✔ RF design. ✔ PCB antennas. ✔ RFID design. ✔ Microcontrollers. ✔ Microprocessors. ✔ QI wireless chargers. ✔ MEMS (accelerometer, gyroscope, etc.) ✔ WIFI / GPS / BLUETOOTH / ZIGBEE systems. ✔ Communication USB2.0 / USB3.0 / USB3.1 / USB3.2 ✔ I2C / UART / I-Wire communication. ✔ Ethernet / RS232 / RS485 communication. ✔ Switching power supplies / linear power supplies. Upon completion of the work, I will provide you with production documentation according to your requirements or those of the PCB manufacturer. I can also supervise the production of printed circuit boards and test upon its completion and afterwards prepare report and renderings for visualization. 💻 Best regards.🤝

I’m a mechanical engineer with a master’s degree and 7 years of industry experience, including prior work on NASA projects. I’ve led full product development processes across multiple industries, from early concepts through mass-produced designs. My work focuses on CAD design, design for manufacturing (DFM), engineering drawings, and engineering validation through FEA. I have experience designing for CNC machining, sheet metal, injection molding, and additive manufacturing (3D printing). On the FEA side, I perform structural, vibration, fatigue, and thermal simulations to optimize and validate designs before production.

"Sergey is knowledgeable of electronics principles and able to complete electronics design." "Excellent to work with." "Outstanding work. You can trust this guy. Will hire again." "Sergey has a lot of knowledge with PCB designs and is a valuable asset to any team." I provide high-quality full cycle Electrical Engineering services from Idea to Mass Production: Hardware, Firmware, Product Design, Prototyping, Manufacturing. HARDWARE: - PCB design: Altium, Eagle. Experience in Digital, Analog, Power electronics, Digital Signal Processing. - 6-12 layers PCB layout, HDI routing, dense routing, thermal management. - Gigabit Ethernet and USB-C. High-speed routing with length matching; impedance calculations. - Component selection, BOM optimisation, preparation of manufacturing documentation. - High current PCB routing up to 200A - EMC reduction, EMC problem fixing FIRMWARE: - MCU firmware in C for ARM, TI, NXP, Atmel, PIC, Arduino; Python; - Bluetooth, Bluetooth Low Energy (BLE), and wireless modules programming. PROTOTYPING: - PCB Prototype manufacturing, debugging, and validation; - Consultation on any aspect of design and manufacturing. MANUFACTURING - BOM optimization to save cost / get better components availability - Creating test instructions, work instructions, test jigs - Organization of contract manufacturing in China I HAVE EXPERIENCE IN: - IoT projects, sensors, wearable electronics, Smart-home systems; - Automotive and Climate control equipment. I developed hardware equipment for autonomous driving systems. - High current high power electronics (BLDC drivers, frequency converters, battery chargers, battery balancers, inverters, power banks, home power storage systems) - High voltage power supplies up to 20 kV - Energy harvesting (solar, piezo, thermal) - Digital signal processing, audio signal processing, Sigma Studio - Solar trackers - Video recording systems for commercial delivery fleet - Wearable projects with tiny flex rigid pcbs AUDIO: - Analog signal processing, High End audio amplifiers - Room acoustic treatment consultations - ANC earbuds and headphones development INDUSTRIAL: - High-reliability systems for critical applications (Robotics, Oil and Gas, Automation); - Micro-controller control systems; - Power Supplies (AC/DC/AC) - AC, DC, BLDC, Step motors, robotics MEDICAL: - ECG, EMG, PPG, SpO2 sensors - Blood pressure monitoring - Respiration rate monitoring - Limbs position monitoring WIRELESS: - GPS, GNSS, telematics - Bluetooth and BLE-enabled devices; - 2.4Ghz radio transmitters (nRF24 family); - NFC tags: hacking, cloning; - Wireless charging Tags: Electrical Engineer, Electrical Engineering, Electronics, Hardware, Firmware, PCB layout, Board layout, Schematics, Altium, IoT, Internet of Things, Power Electronis, Bluetooth, BLE, TI, Texas Instruments, C, C++, MCU, Microcontroller, prototype, validation, BMS, Fusion360, USB-C, Jetson Orin, Jetson Xavier, STM32, GNSS, GPS

Hi! I'm an ECAD expert and PCB design engineer. - PCB design - ECAD / PCB library management - DFM checking As a PCB designer I'm looking for PCB design projects which can help me to grow as a professional. As well as an ECAD engineer I can make a great library of electronic components for you from the scratch according IPC standards or according your demands. I'm passionate about high quality PCB component library development. I truly believe that a high-quality component library is the cornerstone of reliable PCB design. Working in big companies gives me experience that even a small mistake in a component can be very costly, which is why careful attention to detail is essential. 📐 Design Priorities: - Detail-oriented approach - High reliability and robust performance - Manufacturability (DFM) 🛠️ Preferred tools - Altium Designer - Xpedition - KiCad - Footprint Expert - Git for version control For more complex projects in PCB design, I can invite colleagues (highly skilled professionals) with whom I work in a team. I'm also available to join existing teams.

Hi there, I'm a professional Electronics Engineer with 5+ years of hands-on experience in schematic design, PCB layout, and embedded systems—specializing in IoT hardware. Throughout my career, I’ve worked on fleet management systems, smart autonomous devices, and medical electronics. My goal is to expand into every corner of the electronics field and help clients bring their hardware ideas to life. ✅ What I Offer: Custom PCB Design using Altium Designer, KiCAD, or EasyEDA High-quality schematic design tailored to your specs RF design experience: GSM, LTE, GNSS, BLE, Wi-Fi HDI PCBs: blind/buried/stacked vias, 6+ layers Clean, production-ready designs with full documentation Expertise in embedded firmware and IoT solutions 🔍 Ongoing Personal Projects (in spare time only): Battery Testbench: Charge/discharge cycles, internal resistance (DC/AC), and full BMS testing (OCP, SCP, NTC). Compact Weather Station: E-ink display showing temperature, humidity, pressure, and CO₂ levels for indoor air quality monitoring. These side projects are part of my personal development and will not affect your project schedule. 🕒 Availability: 20 hours/week — 2 hours/day (Mon–Fri), 5 hours/day (Sat–Sun) I'm passionate about designing reliable, efficient, and scalable hardware. Whether you're a startup, researcher, or product developer, I'm here to support your journey from concept to prototype. 💬 Let’s talk about how I can help with your next project!