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Merchant Mariner Credential Jobs (NOW HIRING)

Mariner

Corpus Christi, TX ยท On-site

$143.93 - $672.38/day

A Merchant Mariner Credential (MMC) with a medical certificate. * A Medical Certificate from the United States Coast Guard. How do I obtain the required documents? * TWIC: -industry/twic * MMC:

Mariner

Galveston, TX ยท On-site

$143.93 - $672.38/day

A Merchant Mariner Credential (MMC) with a medical certificate. * A Medical Certificate from the United States Coast Guard. How do I obtain the required documents? * TWIC: -industry/twic. * MMC:

Mariner

Brownsville, TX ยท On-site

$143.93 - $672.38/day

A Merchant Mariner Credential (MMC) with a medical certificate. * A Medical Certificate from the United States Coast Guard. How do I obtain the required documents? * TWIC: -industry/twic * MMC:

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Merchant Mariner Credential information

See salary details

$27K

$52.2K

$70.5K

How much do merchant mariner credential jobs pay per year?

As of Jul 23, 2026, the average yearly pay for merchant mariner credential in the United States is $52,239.00, according to ZipRecruiter salary data. Most workers in this role earn between $44,500.00 and $60,000.00 per year, depending on experience, location, and employer.

What are the typical work environments and schedules for someone holding a Merchant Mariner Credential?

Individuals holding a Merchant Mariner Credential can expect to work in a variety of maritime environments, such as cargo ships, passenger vessels, towboats, or offshore supply vessels. Schedules often involve extended periods at sea, sometimes ranging from a few days to several months, followed by periods off duty. Work is typically organized in shifts or 'watches' to ensure 24-hour operations, and the onboard environment requires teamwork and adaptability to confined living conditions. Collaboration with crewmates and strict adherence to safety protocols are essential parts of daily responsibilities. This career offers unique travel opportunities and the experience of close-knit teamwork while facing the challenges of life at sea.

What is a Merchant Mariner Credential job?

A Merchant Mariner Credential (MMC) is a certification issued by the U.S. Coast Guard that qualifies individuals to work aboard commercial vessels. It serves as an official identification and ensures that mariners meet necessary training, medical, and security requirements. Jobs with an MMC can include deckhands, engineers, captains, and other maritime roles on cargo ships, ferries, tugboats, and other vessels. The type of work depends on the endorsements a mariner holds, such as Able Seaman or Qualified Member of the Engine Department (QMED). To obtain an MMC, applicants must complete training, pass a medical exam, and undergo a background check.

Do merchant mariners make good money?

Merchant mariners can earn competitive wages, especially with experience, specialized skills, and certifications such as STCW. Salaries vary based on vessel type, rank, and voyage length, with many positions offering additional benefits like overtime pay and housing allowances.

What can I do with a merchant mariner credential?

A merchant mariner credential allows individuals to work aboard commercial vessels in roles such as deck officer, engineer, or crew member. It certifies their qualifications to operate ships, perform safety procedures, and comply with maritime regulations. The credential is essential for employment in the maritime industry and often requires ongoing training and medical certification.

What jobs can I get with my MMC?

A Merchant Mariner Credential (MMC) qualifies individuals for various maritime jobs such as deck officer, engineer, or steward aboard commercial vessels. The specific roles depend on the license or endorsement held, and additional certifications or experience may be required for certain positions. MMC holders work in environments like cargo ships, tankers, passenger vessels, and offshore platforms.

Can a merchant seaman make over $100,000?

Merchant mariners can earn over $100,000 annually, especially those with advanced certifications, specialized skills, or senior positions such as captains or chief engineers. High-paying roles often involve extensive experience, working on large vessels, and being away from home for extended periods. Salary levels vary based on the vessel type, route, and employer, but top earners in the industry do surpass the $100,000 mark.

What are the key skills and qualifications needed to thrive in the Merchant Mariner Credential position, and why are they important?

To thrive with a Merchant Mariner Credential, candidates need a solid understanding of nautical operations, navigation, safety protocols, and must meet medical and physical standards as set by the U.S. Coast Guard. Familiarity with vessel communication systems, safety equipment, and compliance documentation is essential, and holding the official MMC (Merchant Mariner Credential) is mandatory. Strong teamwork, adaptability, and effective communication are crucial soft skills for working effectively in sometimes challenging maritime environments. These skills ensure not only individual safety and regulatory compliance but also contribute to the overall efficiency and safety of vessel operations.

More about Merchant Mariner Credential jobs
What cities are hiring for Merchant Mariner Credential jobs? Cities with the most Merchant Mariner Credential job openings:
What are the most commonly searched types of Merchant Mariner Credential jobs? The most popular types of Merchant Mariner Credential jobs are:
What states have the most Merchant Mariner Credential jobs? States with the most job openings for Merchant Mariner Credential jobs include:
Infographic showing various Merchant Mariner Credential job openings in the United States as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $52,239 per year, or $25.1 per hour.
Merchant Mariner Credentialing Specialist

Merchant Mariner Credentialing Specialist

U.S. Coast Guard

Houston, TX โ€ข On-site, Remote

$58K - $83K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 7 days ago


Job description

Summary
This vacancy is for a GS-0963-7/8, Merchant Mariner Credentialing Specialist located in the Department of Homeland Security, U.S. Coast Guard, REGIONAL EXAM CENTER-HOUSTON in HOUSTON, Texas.
Learn more about this agency
Duties
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You will serve as a Merchant Mariner Credentialing Specialist and be responsible for serving as a specialist in the areas of merchant mariners credentialing and examination of merchant marine personnel with an emphasis on reviewing and evaluating first-class pilot applications and grading first class pilot examinations.
Being a Coast Guard civilian makes you a valuable member of the Coast Guard team. Typical work assignments include:
  • Reviewing and processing applications for Merchant Mariner Credentials (MMC)
  • Evaluating applications for first-class pilotage routes and grades associated examinations, including navigational chart sketches.
  • Identifying non-conformities in applications and documentation that could delay or prevent the issuance of a Coast Guard MMC
  • Responding to oral and written inquiries from the public and other agencies regarding merchant mariner credentialing requirements and application status.
  • Administering, securing, and evaluating Coast Guard examination modules for specific mariner credentials.

Reasonable Accommodation (RA) Requests: If you believe you have a disability (i.e., physical or mental), covered by the Rehabilitation Act of 1973 as amended that would interfere with completing the USA Hire Competency Based Assessments, you will be granted the opportunity to request a RA in your online application. Requests for RA for the USA Hire Competency Based Assessments and appropriate supporting documentation for RA must be received prior to starting the USA Hire Competency Based Assessments. Decisions on requests for RA are made on a case-by-case basis. If you meet the minimum qualifications of the position, after notification of the adjudication of your request, you will receive an email invitation to complete the USA Hire Competency Based Assessments, based on your adjudication decision. You must complete all assessments within 48 hours of receiving the URL to access the USA Hire Competency Based Assessments if you received the link after the close of the announcement. To determine if you need a RA, please review the Procedures for Requesting a Reasonable Accommodation for Online Assessments. Reasonable Accommodation Information
Requirements
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Conditions of employment
All qualification requirements must be met by the closing date of the announcement.
Do NOT include the following types of information in your resume:
  • Social Security Number (SSN)
  • Date of Birth (DOB)
  • Photos of yourself (if included on your resume you will not be considered for this position)
  • Personal information: such as age, gender, religious affiliation, etc.

Key Requirements:
  • Must be a U.S. Citizen.
  • Must be registered or exempt from the Selective Service. See www.sss.gov
  • A one-year probationary period may be required.
  • To ensure the accomplishment of our mission, DHS requires every employee to be reliable and trustworthy. To meet those standards, all selected applicants must undergo and successfully pass a background investigation. This position does not require a clearance.
  • This is not a Bargaining Unit position.
  • Selectee must be able to obtain/maintain a valid state driver's license.
  • Time-in-Grade requirement must be met by the closing date of the vacancy.
  • All Federal employees are required to have Federal salary payments made by direct deposit.

The Office of Personnel management (OPM) must authorize employment offers made to current or former political appointees. If you are currently, or have been within the last 5 years, a political Schedule A, Schedule, C, Non-career SES or Presidential Appointee employee in the Executive Branch, you must disclose this information to the Human Resources Office.
Qualifications
To qualify at the GS-07 grade level, your resume must demonstrate at least one (1) full year of specialized experience equivalent to at least the GS-6 grade level in the federal sector. Specialized experience is experience that has equipped you with the ability, skill, and knowledge to successfully perform the duties of this position and is typically in or related to this line of work. Examples of specialized experience include performing the following types of tasks on a regular basis.
  • Reviewing applications or supporting documents for completeness or accuracy against established legal or regulatory guidelines; identifying and noting discrepancies; and communicating with applicants or stakeholders to gather required information.
  • Applying rules, policies, or procedures to process applications, claims, or similar requests;
  • Providing oral or written responses to public inquiries about program requirements; and using computer systems to enter or retrieve case information.

To qualify at the GS-08 grade level, your resume must demonstrate at least one (1) full year of specialized experience equivalent to at least the GS-07 grade level in the federal sector. Specialized experience is experience that has equipped you with the ability, skill, and knowledge to successfully perform the duties of this position and is typically in or related to this line of work. Examples of specialized experience include performing the following types of tasks on a regular basis.
  • Reviewing applications or supporting documents for completeness or accuracy against established legal or regulatory guidelines; identifying and noting discrepancies; and communicating with applicants or stakeholders to gather required information.
  • Interpretating and applying rules, policies, or procedures to process applications, claims, or similar requests;
  • Providing oral and written responses to public inquiries about program requirements; and using computer systems to enter and retrieve case information.

NOTE: All experience statements (i.e., duties, specialized experience, or related applicable assessment) copied from this announcement and pasted into your resume will not be considered as a demonstration of your qualifications for this position.
NOTE: Education cannot be substituted for experience at this grade level.
National Service Experience (i.e., volunteer experience): Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., Peace Corps, AmeriCorps) and other organizations (e.g., professional, philanthropic, religious, spiritual, community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment. You will receive credit for all qualifying experience, including volunteer experience.
Education
This position does not have a positive education requirement. If you are including education on your resume, report only attendance and/or degrees from schools accredited by accrediting institutions recognized by the U.S. Department of Education. See Required Documents section for detail.
Are you qualifying based on education? Submit a copy of your college transcript (unofficial is acceptable) from an accredited institution. Once selected & prior to appointment, applicants must provide an official college transcript. Education completed in foreign colleges or universities may be used to meet Federal qualification requirements if you can show that your foreign education is comparable to education received in accredited educational institutions in the U.S. (see FOREIGN EDUCATION below).
College Transcript: If this position requires specific educational course work to qualify, or you are qualifying based in whole or part on education, you are required to provide all unofficial transcripts (undergraduate, graduate, etc.) by the closing date of this announcement or you will be disqualified from further consideration. Transcripts should be legible and detailed, showing course number and department (i.e., bio 101, math 210, etc.), course title, number of credit hours, and grade earned. If course content cannot be easily identified from the title of the course as listed on your transcript, you must submit an official course description from the college/university that reflects the content at the time the course was taken.
FOREIGN EDUCATION: Education completed in foreign colleges or universities may be used to meet Federal qualification requirements if you can show that your foreign education is comparable to education received in accredited educational institutions in the United States. To receive this credit, you must submit evidence of equivalency as provided by a credentialling evaluation service. It is your responsibility to provide such evidence with your application. See Recognition of Foreign Qualifications click here
Only experience and education obtained by the closing date of this announcement will be considered.
Additional information
Due Weight
Due weight will be given to performance appraisals and incentive awards in merit promotion selection decisions in accordance with 5 CFR 335.103(b)(3).
E-Verify
DHS uses E-Verify, an Internet-based system, to confirm the eligibility of all newly hired employees to work in the United States. Learn more about E-Verify, including your rights and responsibilities.
Fair Chance Act
The Fair Chance to Compete for Jobs Act prohibits the Department of Homeland Security and its Components from requesting an applicant's criminal history record before that individual receives a conditional offer of employment. In accordance with 5 U.S. Code ยง 9202(c) and 5 C.F.R ยง 920.201 certain positions are exempt from the provisions of the Fair Chance to Compete Act. Applicants who believe they have been subjected to a violation of the Fair Chance to Compete for Jobs Act, may submit a written complaint to britney.kane@uscg.mil.
Suitability Statement
If you receive a conditional offer of employment for this position, you will be required to complete an Optional Form 306, Declaration for Federal Employment, and to sign and certify the accuracy of all information in your application, prior to entry on duty. False statements on any part of the application may result in withdrawal of offer of employment, dismissal after beginning work, fine, or imprisonment.
Shared Certificates Statement
Applying to this announcement certifies that you give permission for DHS to share your application with others in DHS for similar positions.
Special Employment Consideration
The Department of Homeland Security encourages persons with disabilities to apply, to include persons with intellectual, severe physical or psychiatric disabilities, as defined by 5 CFR 213.3102(u), and or Disabled Veterans with a compensable service-connected disability of 30 percent or more as defined by 5 CFR 315.707. Veterans, Peace Corps, VISTA volunteers, and persons with disabilities possess a wealth of unique talents, experiences, and competencies that can be invaluable to the DHS mission. If you are a member of one of these groups, you may not have to compete with the public for federal jobs. To determine your eligibility for non-competitive appointment and to understand the required documentation, click on the links above or contact the servicing Human Resources Office listed at the bottom of this announcement.
If selection is made below the full performance level, the incumbent may be promoted up to the target grade without further competition, if all legal and regulatory requirements are met and when recommended by the supervisor. However, promotion to the full performance level is not guaranteed and is dependent on successful performance at the lower grade level(s).
If you are unable to apply online, please contact britney.kane@uscg.mil. Decisions on granting reasonable accommodation will be made on a case-by-case basis. Visit Reasonable Accommodation
More than 1 selection may be made from this announcement if additional identical vacancies in the same title, series, grade, and unit occur within 45 days from the date the certificate was issued.
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Candidates should be committed to improving the efficiency of the Federal government, passionate about the ideals of our American republic, and committed to upholding the rule of law and the United States Constitution.
Benefits
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A career with the U.S. government provides employees with a comprehensive benefits package. As a federal employee, you and your family will have access to a range of benefits that are designed to make your federal career very rewarding. Opens in a new windowLearn more about federal benefits.
DHS offers competitive salaries and an attractive benefits package, including health, dental, vision, life, and long-term care insurance; retirement plan; Thrift Savings Plan [similar to a 401(k)]; Flexible Spending Account; Employee Assistance Program; personal leave days; and paid federal holidays.
Other benefits may include flexible work schedules; tuition reimbursement; transportation subsidies; uniform allowance; health and wellness programs; and fitness centers. DHS is committed to employee development and offers a variety of employee training and developmental opportunities. For more information, go to the DHS Careers website and select "Benefits." Disabled veteran leave will be available to any federal employee hired on or after November 5, 2016, who is a veteran with a service- connected disability rating of 30 percent or more.
Eligibility for benefits depends on the type of position you hold and whether your position is full-time, part-time or intermittent. Contact the hiring agency