Hardware design engineer (Embedded Systems & Power Electronics)

Cellone

Engineering & Technology

About Cellone

At Cellone, we’re transforming energy access across underserved African communities by providing clean, affordable, and scalable solar power solutions. Through innovations like our VertGrid platform powered by AI, real-time energy management, and PAYGO technology. we’re enabling reliable power delivery for telecom, healthcare, education, and rural development.

We are looking for a Hardware Design Engineer who can help us push the limits of embedded systems, power control, and smart energy solutions.

What You’ll Be Doing

• Design, prototype, and test embedded hardware systems (microcontrollers, sensors, relays, power interfaces)

• Develop and iterate PCB schematics and layouts for energy management and IoT devices

• Integrate and troubleshoot communication protocols (SPI, I²C, MODBUS RS485, CAN, MQTT, etc.)

• Design power electronics circuits, including DC-DC converters, current sensing, protection systems, and load control

• Optimize hardware for energy efficiency, thermal performance, and reliability in off-grid solar environments

• Collaborate with firmware and product teams to ensure seamless hardware–software integration

• Document hardware designs, BOMs, testing procedures, and hardware-software interface specifications

• Support field testing, manufacturing, and deployment in real-world environments
  

Requirements

Must-Have Skills:

• Proven experience with embedded systems: Arduino, ESP32, STM32, or Raspberry Pi

• Familiar with communication protocols: SPI, I²C, UART, MODBUS (RS485), CAN, WiFi, SIM/GPRS, LTE, Bluetooth, MQTT, HTTP

• Strong experience in power electronics:

• DC power system design (12V, 24V, 48V systems)

• Current sensing, protection circuitry, MOSFET/relay-based switching

• DC-DC converter design (Buck, Boost, etc.)

• Expertise in PCB design and schematic capture using tools like:

• Diptrace

• KiCad

• Autodesk Eagle

• (Bonus: EasyEDA, Proteus, or LTspice for simulation)

• Good grasp of electronics fundamentals: grounding, EMI/EMC considerations, thermal management

• Ability to debug and validate prototypes using tools like multimeters, oscilloscopes, logic analyzers
  

What We’re Looking For in You

• You don’t just build things, you make them work reliably in the real world.

• You’re not afraid to say “I don’t know” and follow it up with action.

• You value clarity, honesty, and growth.

• You want your work to make a difference, not just in products, but in people’s lives.
  

Why Work With Us?

• Be part of a mission-driven company solving Africa’s energy access challenges

• Work on cutting-edge hardware-software energy solutions

• Collaborate with a team that values curiosity, openness, and purpose

• Learning opportunities, and meaningful impact
  

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