Senior Software Engineer

Location: Frederikssund, Denmark or Stavanger, Norway

(Remote options available; onboard vessel work required)

At Hvacon Marine Systems, we specialize in innovative marine automation and HVAC energy optimization. We are looking for a highly motivated senior software engineer to join our control systems design and commissioning team.

You will be part of a well-functioning team of project managers, supervisors, and project engineers, where you will be developing software and automation systems for energy optimization of HVAC systems in the marine industry.

Join us to impact sustainability and efficiency in the marine sector.


  • Program and troubleshoot PLCs (Schneider Modicon, Siemens Step 7 TIA).
  • Interpret schematic drawings and troubleshoot electrical panels.
  • Design and implement HMI/touchscreen interfaces and PLC code.
  • Develop energy-optimizing algorithms with inputs from multidisciplinary teams.
  • Specify new functionalities (FDS) to third-party vendors and manage follow-ups.
  • Engage with customers to integrate their feedback into our solutions.
  • Oversee implementation, testing, and quality assurance processes.
  • Understand and commission motor drives (VFD, Soft starters, MCUs).
  • Configure industrial networks (Ethernet/IP, Profinet, Modbus TCP/IP, RTU).
  • Communicate effectively during programming and commissioning.
  • Work with HVAC teams to integrate controls.
  • Take part in rolling out, and further developing, our cloud-based energy consumption and analytical tool, called the Enhanced System.

Candidate Profile:

  • Experienced in PLC programming, electrical troubleshooting, and network configuration.
  • Skilled in collaborative project planning and execution.
  • Excellent communication skills for customer and team interactions.

Why Join Us?

Influence major marine projects with a focus on environmental sustainability. Collaborate with a dedicated team in a supportive and innovative environment.

Apply Now:

Forward your CV and cover letter to