Odfjell Technology
Mariner Assistant Derrickman

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The energy transition requires people with entrepreneurial spirit and innovative sustainable solutions. With 50 years of industry experience, Odfjell Technology is a leader in developing technological solutions for tomorrow. Our people work to overcome today’s challenges and realise the opportunities ahead, whilst delivering safe and efficient products and services for our clients.
We have an exciting opportunity for Assistant Derrickman to join our Mariner team working on a 2/3 rotation.
Role Summary
Operates, monitors and maintains all drilling fluid systems and equipment associated with drilling; directs and coordinates work activities associated with drilling, fluid system and equipment operations; works aloft in the derrick and/or at the rig floor during normal drilling and tripping operations. The Assistant Derrickman works in the pit room or pump room as directed. The Assistant Derrickman’s work activities include repair and maintenance of all drilling systems, equipment and work areas as directed by the Driller.
Responsibilities
- Assist and relieve the Derrickman, as required.
- Operate, monitor and maintain all drilling fluid systems and equipment.
- Checks valve line-up on all pump related manifolds at the start of each shift. (mud pumps, charge pumps, transfer pumps, etc.).
- Monitors mud properties, volumes, gains and losses while in the pit room.
- Receives and ships dry bulk and mud from supply boat to bulk storage tanks.
- Builds mud volume to client’s specifications.
- Assists with maintaining logbook of mud weights, volume and viscosity readings taken throughout the tour while circulating system is employed.
- Must be able to recognise the signs of a well event before it develops into an emergency condition.
- Required to participate in well control drills to provide the drilling team members practice of functioning the well control equipment to control abnormal well bore pressures.
- Keeps track of the location of rig floor well control equipment and all necessary tools
- Maintain the rig floor, sub-structure and associated areas in a clean and tidy condition.
- Carry out shaker duties in accordance with work programme.
- Take fluid weight and viscosity checks logging them and reporting any anomalies to the Driller.
- Attends any pre-spud meeting as required.
- Drive fork trucks as required for cargo and chemical handling.
- Stand-in for alternative work discipline as required.
- Complete any other reasonable tasks as delegated by Line Supervisor.
- Carry out a comprehensive hand over of ongoing tasks to back-to-back Assistant Derrickman.
- Assist in area inspections as required.
- Work towards achieving Derrickman competency.
- Coach Roustabouts and Floorman to assist them with their competency.
- Attend onshore or offshore meetings and additional training, as required.
- Reports any equipment damage to rig supervisors immediately.
- Attend safety meetings, emergency and lifesaving drills as required.
- Attend and contribute to TBT/TRIC’s and ensure full understanding of the planned operation and your responsibilities.
- In the event of an incident/accident, ensure all steps are taken to make the area secure for investigation and inform the Senior Odfjell Representative immediately.
- Properly use and care for personal protective equipment.
- Bring to the immediate notice of their supervisor, any potential hazards to safety, health, plant and equipment, which come to their attention in the course of their work.
- Carry out planned safety inspections when required.
- Make use of Safety Observation System e.g. BOSS/STOP.
- Take immediate action to contain, eliminate or guard against actual and potential hazards to safety, health, plant and equipment which come to their attention in the course of their work.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
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StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
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Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
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Qualifications And Or Experience


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- 2 years’ experience in an offshore Industry Assistant Derrickman role.
- Must have an extensive knowledge of all relevant offshore mud system equipment.
- Demonstrate aptitude towards personnel management and leadership.
- Knowledge of Company and Client policies and procedures.
- Must successfully satisfy all applicable national regulatory body and client training certification.
Why you should join our team
The Odfjell group recognises that the shift to renewable energy requires a new way of thinking. By leveraging diverse, cross-functional teams we drive innovation, sustainability, and technological improvements across the business. Our people are at the heart of what we do to drive change as we continue to shape and grow the business.
We strive to create a satisfying and motivating workplace for our employees and an arena for sharing experiences with a focus on ongoing learning and development. Our employees report high levels of empowerment, open dialogue, and trust.
We believe that diversity and inclusion are pre-conditions to succeed in a global marketplace. We believe our company values should be reflected in the everyday behaviour of our leaders and employees alike.
We Offer
- Learning and development support
- Collaborative, diverse, and inclusive working environment
- Part of a global company with opportunities for growth and development
- Competitive compensation and benefits package
- Private medical insurance
- Life assurance
- Personal accident insurance
- Company sick pay
- Group personal pension scheme
We live our core values – creative, competent, result oriented, committed – while always being safety conscious.
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