Your role

As part of the R&D team, you’ll collaborate with colleagues in hardware, cloud software, and UX to build reliable, maintainable products that meet strict quality and performance requirements.

Developing embedded software in C/C++ for microcontroller-based and Linux-based systems
Integrating software with custom hardware
Maintaining code quality through testing, refactoring, and code reviews
Contributing to system design and software architecture
Implementing user interfaces in React for selected web-based applications
Supporting the Yocto build pipeline for embedded Linux

Must-have qualifications

Bachelor’s degree or higher in embedded software, electronics engineering, or similar
At least three years of experience in embedded software development
Proficiency in C/C++ for embedded systems
Experience with embedded toolchains (GCC, ARM toolchain, or similar)
Experience with real-time programming and microcontrollers
Familiarity with embedded debugging tools
Understanding of hardware/software interfaces and schematics
Experience with version control (Git + Git Flow) and CI/CD
Knowledge of communication protocols such as UART, I2C, SPI and Ethernet (TCP/IP)
Structured problem-solving skills and clear technical communication in English

Nice-to-have qualifications

Experience with Fieldbus protocols (Modbus, BACnet)
Experience with embedded displays (TFT, LCD)
Knowledge of wireless protocols (Wi-Fi, BLE)
Familiarity with IoT and embedded-system security principles
Experience with unit testing frameworks for embedded systems or hardware-in-the-loop testing
Understanding of cloud-connected embedded systems or IoT communication (MQTT, REST)

Working at OJ

At OJ Electronics, you’ll find an informal, open and collaborative culture where people take pride in doing quality work.

A flat organisational structure where decisions are made quickly
Opportunities to grow your expertise and responsibility over time
A healthy work-life balance and flexible working hours (30–37 hours per week)
Competitive salary and pension package
A modern workplace with canteen and good facilities

Please note that this position is based in Sønderborg, Denmark, and requires your physical presence on site. This is not a hybrid or remote position.

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2 stillinger i alt

Embedded Software Engineer – HVAC Controls

OJ Electronics

Cloud Software Developer

OJ Electronics

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