Mid/Senior Embedded Developer

Venstar is a forward-thinking US company with a strong presence in the IoT space. We design and develop cloud-connected embedded solutions that bring real-world value to users. Our focus is on building reliable, efficient products (smart thermostats, wired and wireless sensors, energy monitors etc) that blend hardware and software innovation. We’re looking for a skilled embedded developer who is comfortable working across system layers (from HW to UI) and enjoys turning complex requirements into robust, user-ready technology. Requirements (Must-Have Skills) - Expert-level proficiency in C and modern C++ (C++14 or later) - Hands-on experience with RTOS (FreeRTOS) and POSIX - Experience with ESP32 and ESP IDF. - Experience with SoC bring-up (at least one of: Cortex-M0/M4/M33/A9/A35/Xtensa) and debugging low-level code - Experience writing device drivers, and working with interfaces (SPI, I2C, UART, Wi-Fi) - Experience interfacing different sensors (temperature, humidity, air quality, water leak etc) - Solid understanding of networking protocols: HTTP/HTTPs, WebSockets, MQTT - Comfortable working across both application and low-level firmware layers - Experience reading and navigating large existing codebases and system architectures - Proficiency with CMake build system - Confident with Git and collaborative version control workflows (Bitbucket, JIRA) - Ability to write unit tests and validate embedded code reliability - Solid grasp of software design patterns - Ability to write code with and without AI assistance Nice to Have (Bonus Skills) - Development of embedded GUIs (LVGL) - Experience with TI-RTOS - Familiarity with reading schematics, using oscilloscopes, performing basic hardware debugging, basic soldering - Knowledge of 802.15.4g wireless protocols: TI15.4, 6LoWPAN, Thread and/or Bluetooth LE - Understanding of security and encryption (OpenSSL, Mbed-TLS) - Experience with building devices that use the BACnet communication protocol