Firmware Engineer-II (IoT)

We're Hiring: Firmware Engineer – BLE Node & Gateway Systems 📍 Location: Hyderabad / Remote (Hybrid Flexibility) 💼 Experience: 2–4 Years 🕒 Employment Type: Full-time, Permanent 💰 Salary: Competitive, based on experience Company: Vanix Technologies Pvt. Ltd. Industry: Deep Tech | IoT | Electronics | Edge Devices About the Role: Vanix Technologies is seeking a skilled Firmware Engineer to develop and optimize firmware for BLE-based sensor nodes and gateway systems. This role is pivotal in building robust, low-power wireless communication firmware that performs reliably in real-world deployments. Key Responsibilities: Develop firmware for Nordic BLE nodes using Nordic SDK or Zephyr RTOS . Integrate BLE nodes with STM32 / ESP32 / Quectel (EC200/EG91) gateway controllers. Design and implement BLE communication stacks with custom services. Optimize for low power consumption , implement OTA updates , and ensure secure BLE connections . Implement and debug communication protocols: UART, SPI, I2C, MQTT, HTTP . Conduct performance tests and debug BLE-Gateway interactions using tools like logic analyzers and RF tools . Required Qualifications: Proficiency in Embedded C/C++ and RTOS concepts . Hands-on experience with Nordic BLE stack (nRF52/53 series) and BLE 5.0 . Experience with Nordic SDK , Zephyr RTOS , and tools like SEGGER Studio , J-Link , and nRF Connect . Strong understanding of BLE advertising , connection states , bonding/security , and BLE device provisioning . Experience integrating Quectel modules and handling AT commands . Preferred Qualifications: Experience with BLE Mesh , Long Range , or Extended Advertising . Knowledge of hybrid wireless systems (e.g., BLE + Cellular + GNSS ). Exposure to field deployments or edge device analytics . Familiarity with cloud integration and backend data flows . Important Note: Candidates without hands-on experience in BLE node and gateway system development are kindly requested not to apply. Why Join Vanix Technologies? Work on real-world, large-scale IoT systems . Opportunity to lead BLE firmware development across multiple domains. Be part of a deep tech startup driving impactful innovation. Enjoy a flexible working culture within a fast-moving product team. Application Process: Interested candidates are invited to apply directly through LinkedIn. Show more Show less