Embedded Software Engineer – Energy-Efficient HVAC Drives

OJ Electronics A/S; Sønderborg; On-site; DKK 600,000 - 750,000; Full time

Benefits offered by this job

Flat organizational structure

Healthy work-life balance and flexible

Competitive salary and pension

Job summary

OJ Electronics A/S is seeking an experienced embedded software engineer to develop software for our variable speed drives used in HVAC applications. You will contribute to system design, build simulation models, and participate in testing and validation, while working across hardware and software disciplines.

The role requires strong C/C++ skills, real-time programming experience and the ability to read schematics, with hands-on debugging.

Qualifications

• Bachelor’s or Master’s degree in embedded software, electronics engineering or a related field.
• Minimum of three years of professional embedded software development experience.
• Strong C/C++ skills for embedded systems and real-time programming.
• Experience with motor control systems and control engineering in embedded environments.
• Hands-on debugging with hardware/software tools and knowledge of interfaces such as UART/I2C/SPI.
• Proficient in reading schematics and datasheets; experience with Git, CI/CD and testing.

Responsibilities

• Develop embedded software solutions for power electronics and variable speed drives.
• Contribute to system design and architecture and create simulation models.
• Support early ideation and documentation; participate in testing and validation.
• Troubleshoot with customers when needed and ensure robust on-site validation.
• Collaborate across hardware and software teams throughout the product lifecycle.

Skills

C/C++ programming

Real-time systems

Hardware/software debugging

Reading schematics/datasheets

UART/I2C/SPI interfaces

English communication

Agile collaboration

Structured problem solving

Team-oriented mindset

Education

Bachelor’s or Master’s degree in embedded software/electronics engineering

Tools

Git & CI/CD

Oscilloscopes

JTAG

Job description

OJ Electronics A/S is seeking an experienced embedded software engineer to develop software for our variable speed drives used in HVAC applications. You will contribute to system design, build simulation models, and participate in testing and validation, while working across hardware and software disciplines.

The role requires strong C/C++ skills, real-time programming experience and the ability to read schematics, with hands-on debugging.