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Senior Embedded Software Developer (Networking, Security)

Warszawa, Województwo mazowieckie, Polen 🇵🇱

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

Qualifications

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