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Subsea Intervention Engineer

Aldelia Limited · Nigeria

Aldelia LimitedNigeriaPosted 14 November 2026

At a glance

Closing date
The listing does not give one. Employers often close early when they have enough applicants, so apply soon.
Where
Nigeria, Nigeria
How to apply
On myjobmag.com, where the employer takes applications.
This employer
Aldelia Limited has 30 open roles on RezSync.

The Subsea Intervention Engr position is responsible for :

Provide first level technical support to FPSO and offshore teams on all subsea related issues

Provide technical support to subsea projects and major integrity subjects

Ensure subsea equipment is operated within its approved design envelope - Identify subsea equipment anomalies and raise Non Conformance Reports (NCRs)

Propose, implement, and follow up mitigation and corrective measures

Troubleshoot subsea equipment failures and lead technical investigations, issuing investigation reports

Prepare, coordinate, and review subsea intervention work packages (IWPs) and detailed procedures for repair and intervention activities

Provide technical assistance for offshore subsea operations (trees, manifolds, wellheads) and related topsides equipment (HPU, SCU, SPCU)

Provide technical support to CCR for subsea operations (subsea switches, IWOC valve operations, etc.)

Manage and monitor subsea equipment located on the FPSO, including HPU and Subsea Control Systems

Perform daily monitoring of subsea control fluid (HW460R) consumption, identify leaks, and coordinate corrective actions

Support commissioning of new wells and provide start up assistance

Perform well leak testing in accordance with CR EP FP 422 and ensure WIMT is regularly updated

Support subsea flow assurance activities and related operational issues

Ensure availability, operability, and integrity of subsea systems and equipment

Ensure all subsea third party devices (MPFM, ASD, downhole gauges, CITVs) remain fully operational

Ensure all subsea critical spares are adequately stocked on the FPSO in line with MRP requirements

Follow up and close all outstanding punch items from subsea commissioning activities

Create, maintain, and update a database of subsea anomalies, tracking issues raised and corrective actions taken

Create, maintain, and issue weekly subsea equipment status reports covering critical subsea components

Issue daily subsea activity reports to site management and onshore subsea maintenance teams when offshore

Participate in subsea weekly team meetings and weekly safety meetings

Maintain high HSE standards for all subsea and offshore operations

Actively raise and follow up on safety and operational anomalies observed offshore

Participate in HAZID, HAZOP, HIRA, and JSA related to subsea interventions and operations

Prepare and maintain HSE dossiers, including those related to subsea safety valve testing

Prepare task plans, work Risk Assessments (JRAs), and Permit to Work (PTW) documentation for subsea interventions

Contribute to the preparation of SIMOPS dossiers and ensure strict application of SIMOPS rules

Support site operations during well preservation, SIMOPS activities, and subsea HPU maintenance

Respond to subsea emergencies, including spill response, in coordination with RSES

Contribute to compliance with ISO 14001 environmental requirements

Assist in the creation and maintenance of Subsea DGS, standing instructions, and approved derogations

Supervise OIMR vessel operations from the FPSO during subsea intervention activities

Supervise OEM and subcontractor personnel during subsea operations on the FPSO

Liaise with SPS Company site representatives on technical matters, repairs, and testing of subsea equipment at contractor yards

Develop expertise in subsea systems engineering and maintain strong knowledge of flow assurance philosophy

Purposes

Deliver high quality technical dossiers to support sound decision making, based on realistic assessments of risks, uncertainties, and opportunities.

Optimize subsea intervention methods, tools, and procedures to improve operational efficiency, safety, and reliability.

Provide technical expertise and recommendations for the selection of subsea technologies, equipment, and service providers to

enhance operational effectiveness and reduce operational risk.

Ensure availability, operability, and integrity of subsea systems and equipment throughout the asset lifecycle.

Support offshore and FPSO operations during start up and stabilization phases, ensuring safe and reliable subsea performance.

Operate and administer the Subsea SMART Tool workstation, ensuring effective use for monitoring, diagnostics, and operational decision making.

Develop and maintain strong technical knowledge of the Subsea Control Unit (SCU) and SMART Tool, enabling effective troubleshooting and reducing dependency on OEM personnel.

Ensure compliance with Company policies, technical standards, and HSE requirements, while optimizing safety, performance, and productivity.

Define, implement, and optimize maintenance and inspection strategies to support long term asset integrity, reliability, and service continuity.

Enhance equipment reliability and availability through continuous improvement of maintenance, inspection, and intervention processes.

Analyze maintenance and intervention costs and propose cost effective technical solutions aligned with asset and company financial objectives.

Maintain and update technical documentation, databases, and records, ensuring data accuracy, traceability, and accessibility.

Analyze incidents, failures, and anomalies, and develop corrective and preventive actions to avoid recurrence and improve operational safety and efficiency.

Contribute to the development of technical competencies within the team, fostering knowledge transfer, autonomy, and continuous improvement.

Collaborate effectively with internal stakeholders, OEMs, contractors, and partners to improve subsea intervention practices and drive innovation.

Participate in strategic and cross asset projects, ensuring alignment with Company long term objectives and global best practices.

Promote and uphold the Company’s Code of Conduct and HSE culture, ensuring a safe, ethical, and compliant working environment.

Maintain an international and cross affiliate perspective, ensuring consistency with Company’ global standards and operational strategies.

Qualification / Experience required

Bachelor’s or equivalent level

Technical skills required for the position :

Subsea trees and wellheads Subsea control systems (MUX, electro hydraulic, IWOCS)

Hydraulic systems and accumulators Electrical and instrumentation basics Subsea valves, connectors, hubs, and actuators

Troubleshooting and fault diagnosis Root cause analysis (RCA) ROV operations and intervention support Hot stab and hydraulic override operations

Interpretation of subsea visuals and survey data

Subsea operating procedures and limits Integrity management and inspection data interpretation

Failure analysis and repair solutions OEM manuals and technical documentation Management of Change (MoC) and deviations

Subsea engineering standards (API / ISO / DNV – awareness level) HSE and risk based technical decision making

Behavioral competencies required for the position :

Clear verbal and written communication

Problem solving and analytical thinking

Ability to work under pressure

Attention to detail

Teamwork and collaboration

Stakeholder and interface management

Decision making and sound judgement

Safety first mindset

Adaptability and flexibility

Time management and prioritization

Professionalism and accountability

Willingness to challenge unsafe practices

Cultural awareness and interpersonal skills

Specific knowledge required for the position :

Subsea production systems architecture

Subsea trees and wellheads (production & intervention)

Subsea control systems (MUX, electro hydraulic, IWOCS)

Hydraulic and electrical umbilicals Subsea valves, actuators, hubs, and connectors

Subsea operating envelopes and design limits

ROV operations and subsea intervention methods

Subsea inspection and monitoring techniques

Integrity management and degradation mechanisms

Failure modes and effects of subsea equipment OEM manuals, data books, and as built documentation Subsea operating and maintenance procedures

Management of Change (MoC) and deviation processes

Subsea engineering standards and company specifications (API / ISO / DNV / Company GS)

HSE requirements for subsea operations

Brownfield operations and life of field support concepts

Level of experience required for the position : Subsea Intervention Engineer — 5–8 years' experience.

Lead day to day technical support for subsea equipment (trees, control systems, umbilicals).

Conduct and lead root cause analyses (RCA) for routine faults and recurring operational issues.

Drive minor modifications (MoC) and technical improvements to enhance equipment reliability and performance.

Coordinate with OEMs, service providers, and vendors to secure timely technical responses and issue resolution.

Support offshore campaign planning, ensuring readiness of procedures, equipment, and critical spares.

Provide on call technical guidance to offshore operations and FPSO teams during subsea activities.

Hands on experience from deepwater offshore intervention campaign and well commissioning.

go to method of application »

Minimum qualifications

BA/BSc/HND

How to apply

Use the link(s) below to apply on company website.

DW Topside Inspection Piping Structures

HSE Supervisor

Subsea Intervention Engineer

Technical Support Process Engineer

Site Support Process Engineer

DW FOPS Support Liaison Officer

Change Management Coordinator

Metering Engineer

Well Performance Engineer – EGINA (Deepwater Asset)

DW Lead Metering Engineer

Akpo Materials Balance Engineer

Decentralized Purchasing Officer

Completions Engineer

https://www.myjobmag.com/apply-now/1388385

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