Hire the Best System Programmers
in Ukraine

I am a game developer specializing in Godot, Roblox, and Unreal Engine with years of experience collaborating with indie studios, content creators, and startups across global markets. My focus is on transforming concepts into polished, performant, and engaging games from rapid prototypes to full scale releases on mobile, PC, and web. · GDScript, C#, 2D/3D · Luau, Roblox Studio, Roact · Unreal Engie, UnrealScript

I am a Hardware Engineer with 10+ years of experience in PCB Design, Microcontroller Programming, and Embedded Systems development. I specialize in building robust Hardware solutions using ESP32, STM32, Arduino, and Raspberry Pi platforms. From initial Schematic capture in Altium or KiCad to final production-ready devices, I deliver high-performance electronics that work in the field. Highlights: - 100% Client success score - 95% first-pass PCB success rate across 100+ boards - Reduced BOM cost by 10–20% per unit through component optimization - Designed and reviewed 100+ PCBs across IoT, industrial, and automotive sectors - Firmware optimized on battery-powered ESP32 devices 📍 Core Services: Professional PCB Design & Schematic Capture - High-quality PCB Design delivery using Altium and KiCad with 100+ commercial products launched globally. - Schematic development and PCB Design for high-density multilayer boards (up to 16+ layers, microvias, HDI). - Hardware Design focusing on DFM/DFA, achieving 98% First-Time-Right fabrication with zero board respins. - Expertise as a PCB Designer in Altium Designer, KiCad PCB, and EasyEDA with 10,000+ hours of hands-on layout experience. - PCB Design for PCB Audio, RF (up to 6+ GHz), and high-speed digital interfaces (DDR4/PCIe Gen4 length matching). - Professional PCB Design and Circuit Designer services for Electronics projects, cutting time-to-market by 30% via IPC-Class 3 compliance. Expert Microcontroller Programming & Firmware: - Expert Microcontroller Programming for diverse industrial and consumer platforms with 99.9% uptime in production. - Microcontroller Programming for ESP32, STM32, Arduino, and Raspberry Pi, covering 200+ deployed nodes. - Embedded Systems development using Embedded C and C language, optimizing memory footprint by up to 40%. - Custom Firmware and Embedded Software for Embedded Systems IoT applications with MISRA C compliance and AES-256 security. - Advanced Microcontroller Programming for ESP32 Firmware, STM32 HAL, and Arduino Programmer tasks with FreeRTOS multi-threading. - Embedded Systems and Microcontroller Programming for Robotics and Python-based logic, accelerating sensor polling rates by 3x. Strategic Leadership & IoT Solutions: - I lead ARTAXE Electronics, a hardware engineering team. As CEO and Electronics Engineer, I ensure every Embedded Systems project is scalable and commercially viable, managing $500K+ in R&D budgets. - IoT architecture for ESP32 and Raspberry Pi systems, supporting 10k+ active concurrent devices in the cloud. - Embedded Systems Engineer services for Embedded Systems with long-range connectivity (LoRaWAN/LTE-M up to 15km range). - Integration of Schematic designs with Antenna Design and PCB Firmware, improving signal integrity and wireless range by 25-30%. - Deployment of Embedded Systems for AgTech (PivotHawk) and industrial monitoring across 50,000+ hectares / 100+ industrial sites. Mechanical Design & Enclosure Development - Bridging the gap between an Electrical Engineer and a Mechanical Engineer, ensuring 0mm clearance errors via precise ECAD-MCAD co-design. - Mechanical Design using SolidWorks, AutoCAD, and CAD tools with 0.05mm tolerance precision. - Enclosure Design and Industrial Design for IP-rated devices (up to IP67/IP68 water & dustproof standards). - Professional Mechanical Design Engineer and Enclosure Designer support, optimizing parts for injection molding to cut tooling costs by 20%. - Mechanical Designer services for custom Hardware housing, validated through 50+ rapid prototypes (3D-printed ASA/SLA). Why Partner With Me❓ ✅ Altium & KiCad Mastery: Expertise in Altium for high-end professional projects and KiCad for open-source flexibility. The workflow in Altium ensures precision, while KiCad provides cost-efficiency. ✅ Prototyping & Production: I don't just create a Schematic; I deliver a working device. From Arduino prototypes to STM32 production units. ✅ Comprehensive Hardware Support: Every Hardware project includes a thorough Schematic review and PCB Design Circuit Design validation. ✅ Reliable Microcontroller Programming: Providing Embedded Engineer grade code for ESP32, STM32, and Raspberry Pi nodes. 💡 Technical Toolkit: ✅ Software: Altium, KiCad, EagleCAD, EasyEDA, SolidWorks, AutoCAD. ✅ Platforms: ESP32, STM32, Arduino, Raspberry Pi, nRF52, i.MX8. ✅ Focus: Embedded Systems, IoT, PCB Design, Microcontroller Programming. Ready to bring your hardware vision to life❓ From the initial Schematic stage to the final PCB Design and production support, I am dedicated to your project's success. Whether you need a simple prototype or a complex Hardware system, let's discuss how my expertise can drive your innovation forward. ❗ Click the "Message" or "Invite" button to start a conversation about your project today❗

I have over 8 years of experience in the industrial automation. I have taken part in large project design and implementation (Food industry, Machine industry, water treatment, chemical processes) of the base of hardware and software of such producers as SIEMENS, Schneider-Electric, Rockwell Automation, Codesys-platform Software: Unity Pro, SoMachine, Codesys, Step 7, Tia Portal, RSLogic 500, Studio 5000, Connected Components Workench ch etc. SCADA, HMI: Vijeo Citect, Vijeo Designer, WinCC, Indusoft, Vijeo Designer etc. Configuration and Commissioning Soft Starters and VFDs.

Hi, my name is Arsen. I’m a Senior C++ and Python developer with 5+ years of experience building software for Linux, Windows, and embedded systems. I focus on clean, efficient, and reliable solutions for low level, backend, and performance critical tasks. What I bring to projects: • C/C++ development: STL, Boost, Boost ASIO, Qt, WinAPI, OCCI, V8, POSIX, multithreading • Python development: automation tools, data pipelines, backend logic, Django • Database engineering: Oracle, SQLite, MongoDB, data export tools, batch processing, custom type conversion • Linux systems programming: networking utilities, driver level interaction, Linux kernel headers, OpenWRT, desktop and CLI tools • Wireless and low level networking: Generic Netlink, nl80211, libnl/libmnl, Wi Fi scanning tools, protocol and frame parsing • Reliability and performance: profiling, transactional workflows, data integrity focused design, Dockerized builds, CI/CD with TeamCity • Cross platform delivery: Linux and Windows applications, Make, CMake, Conan, Git/SVN, GDB, Valgrind, Doxygen, Bash I have built tools ranging from high performance Wi Fi scanners in C that interact directly with the Linux wireless stack, to cross platform C++ command line utilities that export Oracle data into SQLite with transactional safety and performance profiling. I am comfortable working close to the system, optimizing throughput, handling large datasets, and designing software that is maintainable and stable in production. Clients usually trust me with complex backend, systems, and infrastructure related tasks where performance, correctness, and long term reliability matter. If you are looking for a developer who can work on C++, Python, Linux internals, networking, or data heavy applications, let’s talk. 🙂

🤝 I can improve your thoughts and create for you expert advisors (EAs, bots), indicators and scripts for the MetaTrader 4, MetaTrader 5 using MQL4, MQL5. Automating your strategies, for more convenient trading, and for testing your trading strategies. Developing automated trading systems, custom technical indicators, and trading scripts for trading and analyzing Forex, and various financial markets. This saves you time and allows you to make your trade more profitable. Using my experience in trading and programming (since 2014), I help other traders implement and test their trading ideas. Also, I have experience trading Forex since 2011, which allows me to better understand the needs of traders and provide a better service. Customer services I offer: - MQL4 & MQL5 Programming; - source code providing; - clean coding (self-explanatory); - reliable programming; - quick turnaround; - long support; - if required, I will sign NDA. Thanks to my knowledge and experience, as well as the fact that I like doing what I do – you can entrust me with your projects and I will always complete your project perfectly and on time! If you have any questions – help and support your product in the future. Together we will make your trade profitable. I work and help people who are just starting trading, beginners and professional traders, investment advisors, and portfolio managers. 🤝 I am always glad to have long-term partnerships.

I am a proficient mathematician and gained my PhD degree in mathematics in 2008. My field of research is mainly partial differential equations analysis but also includes ordinary differential equations and numerical modelling. I have published a number of high-level research papers, worked as a referee for scientific journals and wrote reviews for Mathematical reviews. I can help you with understanding research papers in this field, writing mathematics-related texts and reviews, and research tasks. I have teaching experience with university courses on partial differential equations, numerical analysis and calculus. Also I can help students with courses on algebra, geometry and ordinary differential equations. I use Octave for numerical modeling and teaching. I worked as a web developer in the past (mainly back-end, PHP and SQL) and can write code for mathematics to include it in the main program. I am also familiar with Python and C on a basic level.