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Assistant 3Rd Class Marine Engineer Jobs (NOW HIRING)

Amentum

Operating Engineer 3rd Class

Arlington, VA · On-site

The Engineer - 3rd Class is a licensed engineering professional responsible for the operation ... activities. * Assist with equipment upgrades, renovations, and capital improvement projects.

The Vision Companies

Senior Marine Engineer

Seattle, WA · On-site

$119K - $163K/yr

Detailed The Senior Marine Engineer will be responsible for ensuring safe, efficient, and compliant ... Experience working on Panamax or equivalent class vessels preferred * Strong understanding of ...

Oracle

Senior Marine Engineer

Seattle, WA · On-site

$119K - $163K/yr

Detailed The Senior Marine Engineer will be responsible for ensuring safe, efficient, and compliant ... Experience working on Panamax or equivalent class vessels preferred * Strong understanding of ...

MILLERS LAUNCH INC

Be Seen First

Marine Diesel Mechanic

Staten Island, NY · On-site

$27 - $45/hr

... engineering a plus Minimum 5 years mechanic work experience Must be able to work on land and at sea Must be able to obtain a TWIC Card Company Description Providing First-Class Marine Service Since ...

Oracle

Senior Marine Engineer

Seattle, WA · On-site

$119K - $163K/yr

Detailed The Senior Marine Engineer will be responsible for ensuring safe, efficient, and compliant ... Experience working on Panamax or equivalent class vessels preferred * Strong understanding of ...

Mars

Senior Marine Engineer

Seattle, WA · On-site

$119K - $163K/yr

Detailed The Senior Marine Engineer will be responsible for ensuring safe, efficient, and compliant ... Experience working on Panamax or equivalent class vessels preferred * Strong understanding of ...

Allen Marine Tours

Marine Mechanic I

Juneau, AK · On-site

$46 - $60/hr

... engineering staff. Essential Duties & Responsibilities Marine Mechanic I * Install, maintain and ... Lead, coach and assist junior team-members (Marine Mechanics II and III) with all job duties (oil ...

Emprise Corporation

Senior Marine Engineer

Chesapeake, VA · On-site

$101K - $139K/yr

Manage assigned vessels class Life Cycle Plans and develop short, mid, and long term maintenance ... First Assistant Engineer * Experience gained while serving in the military may be applicable ...

Allen Marine Tours

Marine Mechanic I

Sitka, AK · On-site

$46 - $60/hr

... engineering staff. Essential Duties & Responsibilities Marine Mechanic I * Install, maintain and ... Lead, coach and assist junior team-members (Marine Mechanics II and III) with all job duties (oil ...

kozmetickesluzby.vecnakraska.sk - Jobboard

NY · On-site

$80 - $100/hr

Marine Systems Engineer - FL - On site job at Vensure Employer Solutions. Lithia, FL. Essential ... Manage the class and regulatory submittal, review, and approval process * Some travel and fieldwork ...

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Assistant 3Rd Class Marine Engineer information

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$33K

$88.8K

$134.5K

How much do assistant 3rd class marine engineer jobs pay per year?

As of Sep 6, 2026, the average yearly pay for assistant 3rd class marine engineer in the United States is $88,754.00, according to ZipRecruiter salary data. Most workers in this role earn between $70,500.00 and $104,500.00 per year, depending on experience, location, and employer.

What is an assistant 3rd class marine engineer?

Assistant 3rd Class Marine Engineers are entry-level licensed officers responsible for maintaining and operating the mechanical and electrical systems aboard a ship, typically under the supervision of more senior engineers. Their duties often include monitoring machinery, performing routine maintenance, and assisting in repairs to ensure the vessel operates safely and efficiently. They play a crucial role in supporting the smooth functioning of the engine room and are essential to a ship's engineering team. To qualify for this position, individuals usually need to complete marine engineering training and obtain relevant certifications.

What are the key skills and qualifications needed to thrive as an assistant 3rd class marine engineer, and why are they important?

To thrive as an Assistant 3rd Class Marine Engineer, you need a strong understanding of marine engineering fundamentals, mechanical systems, and compliance with maritime safety standards, typically supported by a relevant engineering degree and a 3rd Class Marine Engineer Certificate of Competency. Familiarity with shipboard machinery, engine room management systems, and maintenance tools is essential. Attention to detail, teamwork, and effective communication are crucial soft skills for ensuring safe and efficient vessel operations. These skills and qualities are important for maintaining vessel integrity, adhering to safety regulations, and supporting smooth shipboard operations.

What are some common challenges faced by an assistant 3rd class marine engineer and how can they be managed?

Assistant 3rd Class Marine Engineers often encounter challenges such as adapting to the demanding schedules of watchkeeping, troubleshooting mechanical or electrical issues under time constraints, and working in confined engine room spaces. Effective time management, strong communication with senior engineers and crew, and staying updated with safety protocols are key to managing these challenges. Regular training and hands-on experience help build confidence and competence, enabling junior engineers to handle unexpected situations efficiently while ensuring smooth vessel operations.

What is the difference between Assistant 3Rd Class Marine Engineer vs 2Nd Class Marine Engineer?

AspectAssistant 3Rd Class Marine Engineer2Nd Class Marine Engineer
CertificationsBasic engineering certification, often a Marine Engineering Assistant licenseAdvanced certification, typically a 2nd Class Marine Engineer license
Work EnvironmentAssists in engine room operations, maintenance, and repairs under supervisionPerforms more complex engine maintenance and troubleshooting independently
ResponsibilitiesSupport engine room activities, monitor equipment, assist senior engineersOversee engine room operations, manage repairs, and ensure safety standards

The Assistant 3Rd Class Marine Engineer primarily supports engine room tasks under supervision, requiring basic certifications. In contrast, the 2Nd Class Marine Engineer holds more advanced licenses, performs complex maintenance independently, and has greater responsibilities in engine management. Both roles are essential in maritime engineering, with the 2Nd Class being a step above in qualifications and duties.

How much do assistant 3rd class marine engineers make?

Assistant 3rd Class Marine Engineers typically earn between $2,000 and $3,500 per month, depending on experience, certifications, and the shipping company. They work onboard vessels, performing maintenance and assisting senior engineers, often requiring a maritime engineering license or certification.

What does an assistant 3rd class marine engineer do?

An assistant 3rd class marine engineer supports the engine department on ships by assisting with maintenance, repairs, and operation of the vessel's machinery. They perform routine inspections, help troubleshoot mechanical issues, and follow safety protocols under the supervision of senior engineers. Certification such as a marine engineering license is typically required for this role.

What cities are hiring for Assistant 3Rd Class Marine Engineer jobs?

Cities with the most Assistant 3Rd Class Marine Engineer job openings:

What are the most commonly searched types of 3Rd Class Marine Engineer jobs?

The most popular types of 3Rd Class Marine Engineer jobs are:

Assistant 3Rd Class Marine Engineer jobs near you
Infographic showing various Assistant 3Rd Class Marine Engineer job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 67% Full Time, 31% Part Time, and 1% Contract. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $88,754 per year, or $42.7 per hour.

Operating Engineer 3rd Class

Amentum

Arlington, VA • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 4 days ago

Job description

Amentum delivers world-class solutions through the expertise, dedication, and collaboration of our people. We partner with our customers to solve complex challenges and are committed to fostering a workplace where employees can grow, succeed, and make a difference. We are currently seeking a Operating Engineer 3rd Class.
The Engineer - 3rd Class is a licensed engineering professional responsible for the operation, maintenance, troubleshooting, and repair of complex mechanical, electrical, and HVAC systems within a facility.
This position plays a critical role in ensuring the safe, efficient, and reliable operation of building infrastructure and Central Plant equipment.
The Engineer - 3rd Class possesses extensive technical knowledge of boilers, steam and hot water systems, HVAC equipment, electrical systems, and associated mechanical equipment. Working with a high degree of independence, the Engineer performs preventive and corrective maintenance, responds to equipment failures, and ensures compliance with all applicable safety regulations, codes, and operational standards.
Essential Duties and Responsibilities
  • Operate, monitor, and maintain Central Plant equipment and building systems.
  • Perform preventive, predictive, and corrective maintenance on boilers, HVAC systems, pumps, motors, generators, and electrical equipment.
  • Troubleshoot mechanical and electrical issues and implement effective repair solutions.
  • Monitor system performance to ensure efficient and uninterrupted facility operations.
  • Conduct routine inspections of equipment and systems to identify maintenance needs and potential failures.
  • Respond to equipment malfunctions, alarms, and emergencies in a timely manner.
  • Maintain accurate maintenance records, operating logs, and regulatory documentation.
  • Ensure compliance with all safety procedures, environmental regulations, and facility policies.
  • Coordinate with facility management, contractors, and vendors as required to support maintenance and repair activities.
  • Assist with equipment upgrades, renovations, and capital improvement projects.
  • Support the training and development of less experienced engineering staff as needed.

Minimum Qualifications
  • Active Secret Security Clearance (required).
  • Valid District of Columbia 3rd Class Steam and Hot Water Heating Boiler Engineer License (required).
  • Minimum of three (3) years of experience in Engineering Services, facilities engineering, building operations, or a related field.
  • Demonstrated experience operating and maintaining boilers, HVAC systems, and complex building mechanical and electrical equipment.
  • Working knowledge of applicable safety regulations, codes, and industry standards.
  • Ability to read and interpret technical manuals, blueprints, and schematics.
  • Strong troubleshooting, problem-solving, and diagnostic skills.
  • Ability to work independently and effectively in a team environment.

Preferred Qualifications
  • Experience working in government, mission-critical, healthcare, laboratory, industrial, or large commercial facilities.
  • Familiarity with Building Automation Systems (BAS) and Computerized Maintenance Management Systems (CMMS).
  • Experience with steam distribution systems, chilled water systems, and emergency power systems.

Compensation Details:
$97,000-$105,000
The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.
Benefits Overview:
Our health and welfare benefits are designed to support you and your priorities. Offerings include:
  • Health, dental, and vision insurance
  • Paid time off and holidays
  • Retirement benefits (including 401(k) matching)
  • Educational reimbursement
  • Parental leave
  • Employee stock purchase plan
  • Tax-saving options
  • Disability and life insurance
  • Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.
Original Posting:
09/03/2026 - Until Filled
Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.
Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.

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