Embedded Firmware Engineer

22 hours ago


Athens, Attica, Greece IOSEA Inc. Full time €40,000 - €80,000 per year

Embedded Firmware Engineer — BLE / MCU / Renesas Ecosystem (Athens, Greece)

Are you passionate about embedded systems and eager to work on cutting-edge wireless technology?

Join us and help shape the future of BLE-based location intelligence.

We are a rapidly growing technology company based in California, USA specializing in Bluetooth Low Energy (BLE) location-finding solutions, with strong market traction and a strategic partnership with Renesas, one of the world's leading silicon vendors.

As we expand our engineering presence in Greece (Athens), we are looking for skilled Embedded Firmware Engineers who want to work on impactful, real-world products and grow with us as we scale globally.

Role Overview

As an Embedded Firmware Engineer, you will design, develop, and optimize firmware for our next-generation BLE devices, built on the Renesas ecosystem.

You will collaborate closely with a team of experienced engineers, contributing to all of the development steps, from concept to production — while gaining exposure to advanced wireless, sensor, and low-power systems.

This a flexible hybrid role: you can work from our Athens office or remotely, depending on project needs and team collaboration priorities.

Key Responsibilities

  • Develop, test, and optimize embedded firmware for Renesas MCUs and SoCs
  • Integrate and debug BLE stacks and wireless communication protocols
  • Collaborate with hardware, software, and systems teams to deliver robust, high-performance embedded solutions
  • Work with RTOS and bare-metal environments for real-time applications
  • Profile and optimize power, latency, and memory performance
  • Integrate and process data from sensors such as accelerometers, gyroscopes, and environmental sensors
  • Participate in code reviews, design review discussions, and continuous embedded applications improvement efforts

What We're Looking For

  • Proficiency in Embedded C development
  • Solid understanding of MCU architectures — experience with Renesas, Nordic, or similar is a strong advantage
  • Experience with BLE protocol stacks and low-power wireless software design
  • Familiarity with RTOS, peripheral interfaces (UART, SPI, I2C, GPIO)
  • Debugging experience with oscilloscopes, logic analyzers, JTAG/SWD
  • Experience with sensor integration (accelerometers, gyroscopes, etc.) is a big plus
  • Strong communication skills and ability to collaborate effectively in a cross-functional, global team
  • Curious, detail-oriented, and proactive — eager to learn and contribute
  • Professional working proficiency in English

Why Join Us

  • Be part of a growing team in Greece contributing to global innovation in wireless location technology
  • Collaborate with exceptional engineers in a high-synergy environment that values teamwork and open communication
  • Exposure to advanced technologies through our Renesas partnership and leading BLE development ecosystem
  • Competitive compensation based on your level of experience and technical depth
  • Opportunities for growth — as we expand, experienced engineers can take on leadership, specialization, or architecture roles

Location: Athens, Greece (Hybrid)

Eligibility: Greek citizens or residents with a valid work permit



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