We're the code behind clean power.

At Watts Lithuania, we build the digital intelligence that drives European green energy revolution. From smart algorithms that balance solar and battery flows to real-time systems connecting thousands of homes, our work turns data into independence. 

We move fast, think boldly, and build things that matter. Our stack runs in the cloud, our mindset stays on the edge, and our mission is simple - to make sustainable energy effortless for everyone. 

Backed by Andel, Denmark's largest cooperative energy group, Watts combines startup speed with the strength of an energy giant. Together, were coding a smarter, greener future - from Lithuania to the world. 

We're looking for an Embedded Software Developer to join our EV Charger team - the people writing the firmware that keeps the power flowing. 

You'll develop software for our ESP32-S3 micro-controllers, working directly on the firmware that controls charging, connectivity, and communication between devices, the grid, and the cloud. 

Your code will literally move electrons - safely, efficiently, and intelligently. 

You will: 

• Design, implement, and maintain firmware for ESP32-S3 using C/C++ and ESP-IDF 
• Develop and optimize applications running on FreeRTOS 
• Integrate communication protocols (UART, SPI, I2C, MQTT, Modbus, etc.) 
• Collaborate with hardware engineers to debug, test, and bring up new prototypes 
• Ensure system stability, low latency, and efficient power management 

You're an engineer who loves making hardware come alive with code.

• Strong experience with C/C++ for embedded systems 
• Hands-on experience with ESP32, ideally ESP32-S3, and ESP-IDF framework 
• Experience with FreeRTOS or similar RTOS environments 
• Good understanding of micro-controller peripherals and embedded communication protocols 
• Familiarity with hardware debugging tools (JTAG, oscilloscopes, logic analyzers) 
• Experience with firmware testing, version control, and continuous integration 
• (Bonus) Familiarity with Yocto, Linux, or Azure IoT integration 
• Curiosity, precision, and a drive to make things that actually work in the real world

We believe that great code starts with great people - supported, trusted, and inspired. 

Here's what you can count on: 

• Free daily lunch, snacks, and drinks in the office 
• 6 weeks of holiday - rest well, code better 
• Mobile phone of your choice 
• We cover your internet and mobile provider bills - no strings attached 
• Additional private insurance for extra peace of mind 
• Top-tier gear of your choice - MacBook or PC, you decide 
• Hybrid work model 
• Mental and emotional health support 
• A chance to shape the future of clean energy - tech and see your code make real-world impact 

We offer:

Monthly salary ranges from 5000 EUR to 7500 EUR gross (based on your competencies relevant for the job).

If you love clean code and clean energy, Watts is your place.

Were not just building software - we're building the digital grid of the future.

Apply now and help us turn data into independence.