Hire the Best Internet of Things Specialists
in Ukraine

✔ IoT Solution Leader | Leading a team of 220+ engineers ✔ 11+ Years in connected products | End-to-end IoT development ✔ Hardware + Firmware + Cloud Expertise Drop me a message with “DISCOVERY” - we’ll run a free discovery session and turn your idea into a clear architecture, timeline, and execution roadmap while avoiding costly mistakes early on. I lead a 220+ engineer team specializing in end-to-end IoT development – from early discovery and architecture to prototyping, production preparation, and long-term product evolution. Over the last 11+ years, I’ve been involved in building connected solutions that combine embedded systems, electronics, firmware, cloud platforms, and user apps (web, mobile, desktop). My role is focused on bridging business goals with engineering reality: helping teams validate ideas, select the right architecture, reduce technical risks, and build products that can successfully move from prototype to production. Core expertise: • IoT system architecture Designing complete connected ecosystems: devices, communication layers, cloud infrastructure, data flows, APIs, and user applications. • Embedded systems & firmware MCU/MPU-based development, RTOS, embedded Linux, device drivers, hardware communication protocols, low-power optimization, OTA updates. • Hardware development & prototyping Electronics design, schematics, PCB development, hardware bring-up, testing, validation, and preparation for mass production. • Connectivity & communication BLE, Wi-Fi, LoRaWAN, LTE/cellular, MQTT, sensor integration, and reliable device-to-cloud communication. • IoT cloud platforms AWS IoT, device management, telemetry pipelines, real-time monitoring, analytics, and scalable backend architectures. • Connected applications Web dashboards, mobile apps, desktop applications, admin portals, device management platforms, and third-party integrations. Typical IoT products I work with: • Industrial IoT & Industry 4.0 Connected machinery, predictive maintenance, industrial automation, sensor networks, and remote monitoring. • Smart Home & Building Automation Connected devices, automation platforms, energy management, and intelligent control systems. • Healthcare & Wearables Connected medical devices, monitoring solutions, wearable ecosystems, and compliance-focused development. • Energy & Infrastructure Smart metering, energy monitoring, telemetry systems, and remote control solutions. • Location-based products GPS tracking, asset tracking, fleet monitoring, and safety-focused connected devices. • Robotics & Drones UAV/UGV/UAS platforms, telemetry, control systems, and autonomous solutions. Selected project experience: • GPS tracking ecosystem Built a connected solution combining hardware devices, firmware, cloud infrastructure, mobile applications, and management dashboards for real-time tracking and alerts. • Wearable safety platform Developed an IoT wearable ecosystem with embedded software, wireless connectivity, cloud services, and user-facing applications. • Industrial monitoring solution Created a sensor-based platform for collecting operational data, processing telemetry, and providing actionable insights through dashboards. Why clients work with me: • Strong industrial and commercial product development experience I work with complex products where reliability, scalability, security, and real-world constraints matter. • Ability to handle both hardware and software challenges IoT success depends on how all system components work together - not isolated development tasks. • Clear communication and structured development process Transparent milestones, technical documentation, predictable execution, and clear ownership at every stage. • Focus on practical solutions I help teams avoid unnecessary complexity and choose architectures that fit actual product goals. • Long-term support mindset Project scope for reference: Phase 01 – Definition & Architecture: $15k–$25k Discovery, requirements analysis, system architecture, technology selection, and roadmap creation. Phase 02 – Prototype & Validation: $35k–$120k Hardware prototypes, firmware, cloud infrastructure, applications, testing, and product validation. Phase 03 – Production Readiness: $60k–$250k+ Production optimization, manufacturing support, certification preparation, scalability improvements, and deployment. My approach: I don’t start with coding. I start by understanding the product vision, business goals, technical constraints, and future scaling requirements. The goal is to create IoT systems that work reliably in real-world conditions, avoid expensive redesigns, and provide a strong foundation for future growth. If you’re building a connected product involving hardware, firmware, cloud, or device management - feel free to share your idea. I'm ready to help evaluate the technical approach and identify the most practical path forward. Worth a chat?

Full-Stack Developer & DevOps Engineer | IoT • AI/LLM • Industrial Automation 8+ years of software development experience — from web applications and REST/WebSocket APIs to integration with industrial equipment, IoT devices, and LLM systems. I work across the full lifecycle: architecture and database design, full-stack development, containerization, monitoring, and production support. FULL-STACK DEVELOPMENT Client and server-side development: TypeScript, Vue.js, Node.js, Express.js. Designing and integrating internal and external APIs (REST, Swagger/OpenAPI). Working with PostgreSQL, MySQL, MongoDB, Redis, and ORMs (Sequelize, TypeORM). Maintaining legacy projects on PHP Symfony. DEVOPS & INFRASTRUCTURE Containerizing services (Docker, Docker Compose), building CI/CD pipelines, administering Linux servers (Debian, CentOS) — configuration, optimization, security. Designing messaging systems on RabbitMQ, configuring interaction between services and external systems. MONITORING & DATA ANALYTICS Collecting, transmitting, and visualizing metrics: Grafana, InfluxDB, Elasticsearch, Kibana. Building real-time dashboards for industrial and IT monitoring. IoT & INDUSTRIAL AUTOMATION 9+ years working with embedded systems: STM32, Arduino, ESP, AVR, Raspberry Pi, Siemens PLC. Configuring radio communication and optimizing power consumption for LoRaWAN devices. Implementing I2C, UART, SPI, RS232/485, Modbus, S7, TCP, MQTT, GPIO, UDP protocols for data acquisition systems. Building desktop applications with Electron.js for equipment control, portable solutions on ESP/Raspberry, and solutions on the Balena platform. AI / LLM SYSTEMS Developing RAG systems with Qdrant, Ollama, and vLLM (local inference). Prototyping AI agents in OpenWebUI, building flows in Langflow, prompt engineering. Designed and implemented a Dagster-based orchestration pipeline for automated image recognition: OCR + LLM (Claude API) to extract and structure data from scanned documents. Integrating Anthropic Claude API and OpenAI API into production services. TECH STACK Frontend: TypeScript, Vue.js, HTML5, CSS, jQuery Backend: Node.js, Express.js, Node-RED, C, Python Databases: PostgreSQL, MySQL, MongoDB, Redis DevOps: Docker, Docker Compose, CI/CD, Linux (Debian/CentOS), Bash IoT/Hardware: LoRaWAN, STM32, Arduino, Raspberry Pi, ESP, Siemens PLC, AVR, OCR Monitoring: Grafana, InfluxDB, Elasticsearch, Kibana Protocols: I2C, UART, SPI, RS232/485, Modbus, S7, TCP, MQTT, GPIO, UDP Tools: Git, GitLab, Bitbucket, Jira, Confluence, Electron.js, RabbitMQ, Swagger AI/LLM: Ollama, vLLM, Qdrant, RAG, OpenWebUI, Langflow, Anthropic Claude API, OpenAI API, prompt engineering, Dagster Languages: Ukrainian (native), English (B1+), Russian (fluent) Open to projects in full-stack development, DevOps, IoT hardware integration, and building AI/LLM solutions — from MVP to production support.

**HVAC Systems Designer | Embedded Controls Developer | Energy Efficiency Specialist** With over 23 years of experience in designing HVAC systems and energy-efficient solutions, I help clients optimize climate control across a wide range of buildings — from small residential homes to large warehouses, offices, and commercial facilities. My designs are implemented and maintained under my direct supervision, giving me a full understanding of the system lifecycle and ensuring long-term reliability. 🔧 **HVAC Design & Engineering** - Expert in Autodesk AutoCAD MEP for HVAC system design - Proven experience in heating, cooling, and ventilation solutions tailored to building type and usage - Lifecycle-based design decisions for optimal performance and maintainability - Hands-on supervision of system assembly and maintenance 💡 **Smart Automation & Embedded Systems** - 12+ years developing cost-effective programmable controllers (ESP32, Arduino, Raspberry Pi) - Custom PCB design and prototyping (in-house or outsourced) - Web-based interfaces with smartphone control for intuitive system management - Integration of smart algorithms for HVAC, boiler rooms, and heat pumps 📊 **Energy Modeling & Consumption Analysis** - Experience with OpenStudio + EnergyPlus for building energy simulations - Accurate assessment of heating, cooling, ventilation, and lighting needs 🧠 **Legacy System Integration** - 16+ years working with TAC Xenta and Schneider Electric Xenta controllers - Skilled in TAC Vista software and application development for legacy systems I combine deep technical knowledge with practical implementation skills to deliver efficient, scalable, and intelligent building systems. Let’s work together to bring your project to life — from concept to commissioning.

I'm the founder of Sirin Software, a Florida-based R&D company with a development center in Kyiv, Ukraine. My team and I, comprising more than 40 software developers, work with embedded systems, IoT products, and Web3 applications. We have extensive experience in hardware design and software development. Core values: Solution-Centric Approach: We focus on solving problems and contributing to product concepts—we're more than just coders. Honesty: We never overpromise. Client Satisfaction: Delivering 5-star client experiences is our top priority, as reflected in real client reviews. Our main areas of expertise include: Embedded Linux: Device Drivers, BSPs, Yocto, Buildroot, OpenWRT Wired and Wireless Networking (WiFi, Bluetooth, ZigBee/Z-Wave, LoRaWAN, and more) Bare-metal and RTOS-based firmware for ARM and RISC-V (STM32, ESP32, nRF52, etc.) Cybersecurity: Network monitoring, intrusion detection Web3: Ethereum and Solana blockchain solutions Our hard skills (not limited to) include: C, C++, Python, Rust, Golang, JS/TS, Node.js, React.js, AWS, GCP, and MS Azure.

✅ Top-Rated Upworker - Senior Hardware Engineer, Mass Production Expert, Firmware and Software developer - To Get Your Project Developed From Scratch To Mass Production. With 20+ years experience in electronics engineering designed power, analog and digital electronics, including PCB, embedded and mechanics design. I have served a wide variety of industries and have developed initial concepts and prototype devices as well as producing products that go into full scale production manufacturing. Key Offerings: •Digital circuits design •Power circuits design •Analog, precision and low noise circuits PCB design •Housing and mechanics for electronics •Consulting in electronics •Cost optimization of existing projects •Developing modern analogues of existing devices •Software and firmware development •Server solutions Projects developed by me include: - Compact single board ARM computer/router - Virtual reality suit for medical purposes - Autonomous, solar-powered lamp with controller for DIN-rail - Smart Battery Management System (BMS) - Linux body cam

Experienced in cross-platform and native mobile apps development, admin panels, dashboards, cloud, IOT solutions, web applications and back-end. My specialization: geolocation and Google Maps / MapBox / OpenStreetMap; VoIP apps for voice and video calls; payment system integration; social network API for authorization; REST API and Database providing; BL/BLE with other devices; chats; machine learning; Application types I have created: tracking and navigation apps with GPS and BL/BLE usage; dating and social network apps; messaging applications; multimedia and entertainment apps; application for cooperation with IOT devices; manufacturing app to work with company's staff and other infrastructure. I try to approach the project solution structurally and uniquely, which allows me to save clients' time. I know that it is very important for customers to be always in touch, so I do not have days off and I try to answer around the clock.