Ballast Engineer: Offshore Marine Stability Expert

Roll Group; Batam; On-site; IDR 300,000,000 - 600,000,000; Full time

Benefits offered by this job

International projects

Collaborative team

Professional development

Job summary

Roll Group is seeking an experienced Ballast Engineer to join our Engineering team and support complex marine operations across offshore, shipyard, port, and major infrastructure projects. You will ensure safe, stable, and technically sound execution of heavy cargo transport and marine load-out activities.

Responsibilities include developing ballast, stability, and marine load-out plans; reviewing hydrostatics, tank plans, deck strength, and load distribution; performing stability calculations;

Qualifications

• Bachelor’s degree or higher in Naval Architecture, Marine Engineering, Offshore Engineering, Mechanical Engineering, Civil/Structural Engineering, or related discipline.
• 5–10 years of relevant experience in marine engineering, naval architecture, offshore installation, barge stability, heavy lift, or engineered transport.
• Proven track record in stability calculations, ballast planning, vessel suitability assessments, and marine operation procedures.

Responsibilities

• Develop and verify ballast, stability, and marine load-out engineering for barges, pontoons, and floating structures.
• Review vessel and cargo data, including hydrostatics, tank plans, deck strength, and load distribution.
• Prepare ballast and de-ballast plans for operations such as load-out/load-in, float-off, skidding, towing, and berth activities.
• Perform stability calculations (displacement, drafts, trim, heel/list, GM, free-surface effect, wind heeling, damaged stability, etc.).
• Coordinate with Naval Architects, Marine Warranty Surveyors, classification societies, and client engineering teams.
• Contribute to risk assessments, method statements, operation procedures, and lessons-learned reviews.

Skills

Ballast planning

Stability calculations

Marine engineering

Vessel data review

Education

Bachelor's degree in Naval Architecture or Marine Engineering

Job description

Roll Group is seeking an experienced Ballast Engineer to join our Engineering team and support complex marine operations across offshore, shipyard, port, and major infrastructure projects. You will ensure safe, stable, and technically sound execution of heavy cargo transport and marine load-out activities.

Responsibilities include developing ballast, stability, and marine load-out plans; reviewing hydrostatics, tank plans, deck strength, and load distribution; performing stability calculations;