Senior Embedded Software Developer (Networking, Security) at Sigma Software in Lviv

Job description

Design and implement embedded software components and device functionality for connected IoT systems Develop, optimize, and maintain networking capabilities for cloud-connected embedded devices Implement telemetry, monitoring, remote provisioning, and Firmware-Over-the-Air update mechanisms Integrate and troubleshoot communication technologies including Ethernet, Wi‑Fi, BLE, LTE, Zigbee, and Thread Develop secure communication mechanisms following embedded cybersecurity best practices Design and maintain bootloaders, firmware update systems, and device lifecycle management functionality Perform debugging, troubleshooting, and root-cause analysis on real hardware platforms Conduct unit, integration, and system-level testing Collaborate with architects, hardware engineers, QA specialists, and security experts Participate in technical discussions, estimations, planning sessions, and Customer communication Prepare and maintain technical documentation Ensure compliance with engineering standards, security requirements, and quality processes Contribute to continuous improvement of development practices and engineering workflows 5+ years of commercial experience in embedded software development using C/C++ Strong experience with ARM-based microcontrollers such as STM32, NXP, TI, or Silicon Labs Strong understanding of embedded systems architecture, RTOS concepts, and hardware-software interaction Practical experience with wireless technologies including BLE, Wi‑Fi, LTE, Zigbee, or Thread Solid networking knowledge including TCP/IP, UDP, DHCP, DNS, IPv4/IPv6, MQTT, HTTP/HTTPS, and WebSockets Experience with cloud-connected embedded devices and IoT ecosystems Experience implementing OTA/FOTA firmware update mechanisms Understanding of embedded cybersecurity concepts including secure boot, TLS/SSL, certificate management, authentication, and cryptographic fundamentals Experience with communication interfaces such as UART, SPI, I2C, CAN, and Ethernet Experience with FreeRTOS, Zephyr, Embedded Linux, or similar platforms Strong debugging and troubleshooting skills using J-Link, ST-Link, GDB, or equivalent tools Experience with Git-based development workflows Upper-Intermediate or higher English level WILL BE A PLUS Experience with cybersecurity standards and secure development practices for IoT products Practical experience with networking stacks such as lwIP Experience with secure bootloader development and device provisioning Knowledge of PKI, certificate-based authentication, and hardware security modules Familiarity with Docker, GitLab CI/CD, and automated testing frameworks Experience with AWS IoT, Azure IoT, or Google Cloud IoT Basic hardware design and debugging knowledge Experience with secure manufacturing and device onboarding processes