Hardware Engineer – Power Electronics

We’re expanding the development team behind our Drives product portfolio and are looking for a power electronics hardware engineer with experience in power electronics development. This position focuses on developing the hardware platforms our drives are built on.

OJ Electronics – a Danish producer of HVAC drives, AHU controllers, and thermostats for electric floor heating – is looking for a hardware engineer to join our Hardware R&D team in Sønderborg, Denmark.

In this role, you will work in cross-functional development teams alongside specialists in software, mechanics, testing, and product management. Your work will involve transforming technical requirements and product ideas into robust hardware designs that meet demanding performance, quality, and regulatory requirements.

Your involvement will apply from the earliest concept and simulation stages to validation and final implementation – with opportunities to influence technical decisions and product performance throughout.

Your role

As part of the hardware development team, you’ll help design, validate and improve the power electronics hardware that forms the foundation of our drives platform.

Your specific responsibilities will include:

Participating in development activities from concept phase through production release

Developing power electronics hardware for motor-control and broader drive applications

Translating technical requirements into hardware designs and implementations

Performing simulations, validation, and verification of hardware designs

Resolving technical challenges related to performance, reliability, and compliance

Collaborating closely with software, testing, mechanics, and product management teams

Supporting testing and validation activities related to standards and special application requirements

Must-have qualifications

Master’s degree or engineering degree in electronics or a related field

Experience with electronic design and hardware development – preferably power electronics

Experience with inverter design, DC-link design, thermal design and derating, EMC

Experience validating electronic hardware through testing and verification

Knowledge of power electronics and motor-control systems

Experience working with ACIM, PMSM, or BLDC motor technologies

Strong communication skills in English, written and spoken

Nice-to-have qualifications

Experience with simulation tools such as MATLAB or similar platforms

Experience developing hardware for drives or motor-control applications

Danish language skills are a strong plus

Structured and proactive approach to technical problem-solving

Experience working in cross-functional development teams

Working at OJ

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

We offer:

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

Competitive salary and pension package

A modern workplace with canteen and good facilities

Employee satisfaction scores average above 87 – and we take pride in maintaining a workplace where people truly thrive.

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.

The application process

For this position, we will be interviewing on an ongoing basis until we find the right person.

About OJ Electronics

Founded in 1964 and headquartered in Sønderborg, Denmark, OJ Electronics produces electronic controls for underfloor heating and HVAC controls and drives. Our products are available through partners and distributors worldwide, and we have subsidiaries and sales offices in key markets, including the United States and Poland. Everywhere, we are known for our innovative approach, insistence on product quality, and deep application knowledge – all of which helps customers differentiate themselves in the market.

In June 2023, OJ Electronics was acquired by BITZER Electronics, a BITZER Group company also headquartered in Sønderborg. This makes OJ Electronics part of the BITZER Group family, which is represented at 75 locations in over 40 countries and employs some 4300 people worldwide, just over 185 in OJ Electronics, Sønderborg, Denmark.

If you have any questions, please contact

Flemming Bundgaard

Phone: +4573121378

Phone: +4520308264

Application deadline:

As soon as possible