Service Engineer - Ballast Water Treatment Systems

Mr. Marine; Rotterdam; On-site; EUR 60,000 - 90,000; Full time

Job summary

Mr. Marine is seeking a Service Engineer (BWTS) to service ballast water treatment systems on sea-going vessels. You will perform maintenance, testing, and repairs on-site, ensuring compliance with IMO and USCG requirements.

The role involves field service, troubleshooting, and providing technical support to vessel crews. The ideal candidate has hands-on engineering expertise, a Diploma or Bachelor’s in engineering, 3–5 years in a similar role, and readiness to travel regionally and

Qualifications

• BWTS knowledge including UV treatment, electro-chlorination, etc.
• Experience with commissioning BWTS in field service.
• Strong mechanical and electrical troubleshooting abilities.
• Ability to interpret technical drawings, schematics, and manuals.
• Familiarity with IMO BWMS Code and safety rules for marine processes.
• Knowledge of industry standards and safety rules.

Responsibilities

• Perform scheduled and preventive maintenance of BWTS components including filtration units, UV reactors, electrolysis systems and control panels.
• Ensure operation meets IMO/USCG regulations and standards.
• Test, validate, and suggest improvements to systems.
• Calibrate instruments for accuracy.
• Troubleshoot, repair and upgrade systems as needed.
• Provide remote and on-site technical support to crews and operators.
• Maintain detailed service records and parts usage.
• Collaborate with project management and specialists to plan jobs.

Skills

BWTS knowledge

Commissioning BWTS

Electrical troubleshooting

Mechanical troubleshooting

Reading schematics/drawings

Safety regulations (IMO BWMS)

Analytical skills

Customer interaction

Communication skills

Willingness to travel

Education

Diploma or Bachelor’s in engineering or equivalent

Tools

Google Workspace

Job description

A Service Engineer (BWTS) is responsible for the field service, inspection, testing, maintenance, troubleshooting, and repair of ballast water treatment systems on seagoing vessels. The role involves working on-site to ensure compliance with international regulations, such as IMO and USCG requirements.

This position is ideal for candidates passionate about maritime environmental compliance, with hands‑on engineering expertise and a problem‑solving mindset.

Reporting to:

Technical Manager

What you’ll do:

• Perform scheduled and preventive maintenance of BWTS components, including filtration units, UV reactors, electrolysis systems, and control panels.
• Check and ensure that the equipment and systems operate within the IMO, USCG, regulatory requirements, and relevant standards.
• Test and validate systems and suggest improvements
• Calibrate instruments to maintain accuracy and reliability.
• Identify and resolve system malfunctions (troubleshooting),
• Do repairs and adjustments, replace defective parts, and conduct system upgrades when necessary.
• Provide remote and on‑site technical support to vessel crews and ship operators.
• Maintain detailed records of work performed, parts used, and customer interactions.
• Work with project management and technical specialists to plan and do jobs
• Stay safe at all times
• Perform other job‑related tasks as assigned

What you need to know and be good at:

• Knowledge of BWTS technologies (UV treatment, electro‑chlorination, etc.)
• Experience in commissioning of BWTS
• Strong mechanical and electrical troubleshooting abilities.
• Ability to interpret technical drawings, schematics, and manuals.
• IMO BWMS Code Familiarisation
• Knowledge of industry standards and safety rules for marine processes
• Strong analytical skills and attention to detail
• Eagerness to learn and adapt
• Ability to work well with customers, co‑workers, and contractors
• Strong communication skills
• Willingness to travel within the region and internationally

Requirements:

• Professional (Diploma or Bachelor’s) degree in engineering or vocational qualification
• 3-5 years of experience in a similar role (preferred)
• Good English communication skills (verbal and written)
• Dutch language skills are a plus but not mandatory
• Flexible working hours: work hours may fluctuate depending on vessel schedules and operational needs, and out‑of‑hours work will be required.
• Willingness to travel extensively and work onboard vessels or at yards
• Ability to work independently and under pressure in a maritime environment.
• Confident, engaging, and able to build relationships and take calculated risks
• Willingness to learn and develop
• Experience with common productivity tools ("like Google Workspace")
• Excellent interpersonal and problem‑solving skills
• Valid EU driving license - type B
• Medically fit for offshore assignments and working at heights

Key strengths:

• Independent and positive with good attention to detail
• Solution‑oriented
• Team player
• Dependable and hardworking
• Takes the initiative and is self‑motivated
• Organized and able to multitask
• Problem solver
• Flexible working schedule
• Able to write reports and correspondence
• Able to work under pressure and handle multiple priorities and deadlines