Principal Subsea and Pipeline CAD Designer at Westpaq Engineering Nigeria Limited (WPQ)

About the Role

• We are seeking a highly experienced Principal Subsea & Pipeline CAD Designer to lead the development of high-quality CAD drawings and 3D models supporting offshore subsea and pipeline projects. This role is responsible for delivering accurate, compliant, and well-controlled engineering documentation across FEED, detailed design, fabrication, installation, and as-built phases. The ideal candidate has at least 10 years of upstream offshore experience with strong expertise in subsea layouts, pipeline systems, tie-ins, umbilicals, and installation support drawings. 
• This position offers the opportunity to contribute to complex offshore developments, ensuring technical accuracy, installation readiness, and long-term asset reliability.

 Responsibilities

• Provide high-quality CAD drafting, modelling, and engineering documentation support for subsea hardware, structures, pipelines, umbilicals, and associated systems.
• Ensure drafting deliverables are accurate, consistent, and compliant with project standards, engineering requirements, and industry codes.
• Work closely with Subsea Hardware Engineers, Pipeline Engineers, and Systems Engineers to interpret engineering data and convert into CAD deliverables.
• Incorporate specifications, and equipment vendor information into drawings.
• Support subsea equipment configuration management and iterative design development through all project phases.
• Maintain drawing registers, metadata, revisions, and change tracking.
• Manage CAD file organization and ensure compatibility with project platforms.
• Update drawings based on: Installation contractor redlines, Fabrication yard mark-ups, Offshore site changes and as-built reports etc.
• Support offshore teams with drawing clarifications where necessary

Typical Deliverables:

Pipeline System Drawings

• Pipeline Routing & Alignment Sheets: Horizontal and vertical profiles showing seabed topography and pipeline route.
• Pipeline Isometric Drawings: Detailed spool and joint configurations.
• Crossing Details: Drawings for pipeline crossings over existing infrastructure.
• Expansion Loop Layouts: For thermal expansion management.
• Pigging System Integration: Pig launcher/receiver interface drawings.
• Pipeline Approach: Field to FPSO

Subsea Structures & Layout (topside-to-seabed)

• General Arrangement (GA) Drawings: Layout of manifolds, PLETs (Pipeline End Terminations), PLEMs (Pipeline End Manifolds).
• Structural Detail Drawings: Weld details, pad eyes, lifting points.
• Foundation & Mudmat Drawings: Soil interaction and stability details.
• ROV Access Drawings: Clearances for intervention tools.
• Layout: Field Layout, drill centre layout, cluster layout, subsea layout with/and without geophysical formations

Umbilicals & Control Systems

• Umbilical Routing Drawings: Path from FPSO to subsea distribution units.
• Umbilical Termination Assembly (UTA) Drawings: Connection details for hydraulic/electrical lines.
• Junction Box Layouts: For electrical and fiber optic terminations.
• Bend Restrictor & Stiffener Details: Compliance with minimum bend radius.

Tie-in SystemsSubsea tie-in interface drawings

• Tie-in Spool Drawings: Dimensional details for spools connecting pipelines to manifolds.
• Connector Interface Drawings: Hub profiles and gasket details.
• Jumper drawings
• Installation Sequence Drawings: Step-by-step visuals for subsea tie-in operations.

Process & Instrumentation

• P&IDs (Process and Instrumentation Diagrams): For manifolds, pigging systems, and control modules.
• Hydraulic Schematics: Control fluid routing and valve actuation.
• Electrical Schematics: Power and signal distribution.
• PFDs
• PEFs

3D Models

• Integrated Subsea Layout Model: Full field layout including pipelines, structures, and umbilicals.
• Clash Detection Models: For verifying clearances and avoiding interference.
• Installation Simulation Models: For lifting and deployment planning.

Fabrication & Assembly Drawings

• Component Fabrication Drawings: For manifolds, frames, and supports.
• Assembly Drawings: For subsea modules and skid packages.

Installation & Transport

• Lift Plans & Rigging Drawings: For subsea structures and heavy components.
• Transport Frame Drawings: For shipping and handling offshore.

As-Built Documentation

• As-Built GA Drawings: Reflecting final installed condition.
• Survey Drawings: Post-installation pipeline and structure positions.
• !nstallation support drawings (rigging, lifting, ROV access etc.)

Qualifications

• Bachelor’s degree in Engineering or equivalent, preferably in Subsea Engineering.
• Minimum of 10 years of relevant experience in upstream E&P projects, with strong exposure to offshore design and execution environments.
• Experience in offshore/subsea CAD drafting.
• Experience supporting subsea FEED, detailed design, and/or installation engineering projects.
• Familiarity with major operators and OEM contractors.
• Excellent attention to detail
• Good communication with multidiscipline teams
• Ability to manage workload and prioritize deliverables
• Strong quality-focus and documentation discipline