Subsea Engineering — P6

ENERGY.SUBSEAEN148B.P6

P6P6 — Principal Professionalhigh0.90approvedglobalv1

Designs, analyzes, and delivers subsea production and pipeline systems for offshore oil & gas, including flowlines, PLETs/PLEMs, connectors, manifolds, wellhead systems and installation hardware. Distinct from topside/process, naval architecture, or reservoir-focused siblings: this focus centers on subsea hardware design, global/structural and flow-assurance analysis (OrcaFlex, Abaqus, OLGA), code-compliant pipeline integrity (DNV-ST-F101, API 1160, ASME B31.4/B31.8), and offshore installation/commissioning of subsea equipment via ROV-supported operations and FAT/SIT.

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Level

P6 · P6 — Principal Professional · 12–18 yrs

Function · Focus

Energy & Resource Engineering · Subsea Engineering

Market pay (median)

$188k ($148k–$240k)

Pay basis

function-anchored · wide bars

Focus — Subsea Engineering

Material PAY and SKILL differential vs the function baseline.

Responsibilities by level

What this person actually does at each level on the professional track — escalating scope, not one generic blob. Your level is highlighted.

Designs 3D models of subsea engineering products and produces drawings (including IFC drawings) according to client preferences using CAD software and 3D modelling, and maintains work logs.
Performs conceptual design work and engineering calculations under close supervision, interpreting analysis results against guidance provided.
Builds small-scale models, simulates conditions, observes performance and analyses results for individual components and fittings.
Costs and tests components and fittings such as connectors and clamps using CAD and 3D modelling tools.
Supports Factory Acceptance Testing (FAT) and System Integration Testing (SIT) and travels offshore to witness subsea equipment when directed.

Takes on more independent design work, owning specific components or portions of a larger subsea engineering effort with general instruction and milestone review.
Conducts simulations of subsea systems (e.g., global analysis in OrcaFlex, flow checks in OLGA) and oversees testing of prototypes.
Contributes to feasibility assessments, cost estimations and risk analysis for subsea workscopes.
Liaises with clients, regulatory agencies and cross-functional teams on defined deliverables, and begins specializing in a subfield such as flow assurance or structural analysis.
Owns a discrete workscope end-to-end, supporting offshore execution and equipment delivery, and mentors junior/graduate engineers on CAD and modelling practice.

Leads specific subsea design projects independently, planning day-to-day work and applying engineering judgment to decide whether models and assumptions are acceptable against code.
Conducts complex simulations across the workflow (e.g., DeepLines/OrcaFlex global analysis, Abaqus FEA, OLGA flow assurance) and evaluates identifiable design factors.
Takes on project-management responsibilities including scheduling and budgeting for assigned workscopes, and coordinates project activities.
Liaises with contractors, suppliers and regulatory bodies, and networks with senior engineers to resolve diverse subsea design problems.
Guides and mentors junior staff, reviewing their calculations, drawings and analysis outputs.

Bears comprehensive responsibility for design, execution and delivery of complex subsea workscopes with functional impact across an asset.
Performs in-depth analysis of complex variables across structural, dynamic and flow-assurance domains, selecting analysis methods and tools (OrcaFlex/OrcFxAPI, Abaqus, Flowax, OLGA).
Leads detailed design, installation and commissioning of subsea systems including flowlines, PLETs, PLEMs and connectors, and may lead multidisciplinary engineering teams.
Produces budgets and plans for specific studies or modifications and manages the cost-control process, coordinating across groups and influencing technical decisions.
Manages contractors and suppliers for a subsea workscope and orchestrates field operations, witnessing FAT/SIT and offshore installation.

Serves as the technical authority on complex, strategic subsea engineering challenges, acting independently on broad and special assignments that contribute to company objectives.
Manages all subsea workscopes related to an asset, including the management of contractors and suppliers and orchestration of extensive field operations.
Leads Pipeline and Subsea engineering input into design, fabrication, installation and commissioning across multidisciplinary teams.
Resolves intangible, high-uncertainty problems (e.g., multiphase flow assurance, fatigue/VIV under DNV-RP-F105, fitness-for-service under API 579-1) where precedent is limited.
Builds influential internal and external networks, serving as a spokesperson with clients and regulatory agencies on subsea integrity and design approaches.

P6this profile

Acts as a company-wide expert on subsea technologies, products and processes, making strategic, high-impact decisions with organization-wide scope of influence.
Owns the multi-disciplinary picture across multiple teams or the entire subsea organization, influencing strategy, architecture and technical direction.
Codifies and teaches the discipline, setting subsea design and integrity standards and mentoring engineers across the organization.
Shapes the field through visionary problem-solving on novel subsea hardware and analysis methods, with full independence as an individual contributor.
Influences industry and company direction as a recognized thought leader without official management authority, representing the organization in standards and technical forums.

Level guidelines

The universal leveling rubric applied to this function — how scope, complexity, collaboration, and experience step up across levels.

Level	Knowledge & Application	Complexity & Problem Solving	Collaboration & Interaction	Typical Degree & Years
P1	Applies foundational subsea engineering knowledge to routine CAD/3D modelling, basic calculations and component design; learns codes and standards under guidance.	Solves routine problems with standard answers within defined component-level tasks; escalates anything ambiguous.	Maintains stable internal relationships with the design team; reports analysis observations and work logs to supervising engineers.	0–1 years; new graduate or intern, typically with a relevant engineering degree.
P2	Applies conventional subsea design and analysis procedures (CAD, OrcaFlex global analysis, OLGA flow checks) with growing fluency in codes such as DNV-ST-F101 and ASME B31.4/B31.8.	Exercises judgment in familiar contexts on moderate-scope design problems; performs simulations and risk/cost estimates with some routine independence.	Builds productive project relationships; liaises with clients and cross-functional teams on defined deliverables and may mentor junior staff.	2+ years with a bachelor's, or MS/PhD with no experience.
P3	Applies in-depth knowledge across structural, dynamic and flow-assurance analysis and codes/standards to diverse subsea problems; begins exercising engineering judgment on model acceptability.	Evaluates identifiable factors across diverse design problems with moderate independence; conducts complex simulations and plans own work.	Networks with senior professionals; coordinates project activities and liaises with contractors, suppliers and regulators; mentors junior engineers.	5+ years (BA), 3 years (MA), or PhD without experience; progressing toward IEng/CEng registration.
P4	Applies advanced, often specialized expertise (e.g., FEA, DNV-RP-F105 fatigue/VIV, API 579-1, flow assurance) to select methods for complex subsea workscopes with functional impact.	Performs in-depth analysis of complex variables; makes design and integrity decisions on complex issues and may lead teams through delivery.	Coordinates across groups and influences technical decisions; manages contractors and suppliers and represents engineering in client and offshore execution settings.	8+ years, often with graduate education; typically Chartered Engineer (CEng).
P5	Brings extensive, expert mastery of subsea pipeline and hardware design, integrity and flow assurance to strategic, unique assignments that shape company objectives.	Resolves intangible, high-uncertainty problems with high independence where precedent and standard answers are limited.	Builds influential networks internally and externally; acts as technical spokesperson with clients and regulators; may supervise others on special tasks.	12+ years of extensive subsea engineering expertise; CEng with a track record across full asset lifecycles.
P6	Serves as principal, field-defining authority on subsea technologies, products and processes, setting standards and architecture organization-wide.	Applies visionary, field-shaping problem-solving to novel subsea challenges with full independence and strategic latitude.	Influences industry and company as a recognized thought leader; provides high-level mentorship and shapes peer professionals without formal management authority.	15+ years as a principal subsea expert; often PhD plus industry leadership and active standards involvement.

Skills

Focus-specific skills the role applies — the relevance layer beyond the occupational base.

Codes and standards knowledge: Application of industry design and integrity standards such as DNV-ST-F101, API 1160, ASME B31.4/B31.8, DNV-RP-F105 and API 579-1 to subsea pipeline and structural design.
Reliability and Functional Safety: Understanding SIL/LOPA fundamentals for subsea controls reliability and functional safety.
Dynamic and structural analysis: Assessing structural integrity and dynamic performance of offshore systems using FEA and global analysis tools.
Flow assurance: Solving complex flow assurance challenges such as multiphase flow, wax build-up and pigging schedule definition.
CAD and 3D modelling: Designing, costing and testing components using CAD software and 3D modelling to deliver drawings such as IFC drawings.
Engineering judgment: Deciding whether models and assumptions are trustworthy and acceptable against code, distinguishing seniority beyond tool use.
Subsea hardware knowledge: Fluency in equipment such as PLETs, PLEMs, connectors, clamps, wellhead systems and installation frames.
Numerical and scripting skills: Using MATLAB and Python for automation, batch analyses and integration of workflows, plus engineering report writing.
Project management: Scheduling, budgeting, cost control and management of contractors and suppliers.
ROV operations knowledge: Familiarity with remotely operated vehicle operations for subsea installation and intervention.
OrcaFlex: Uses this tool/technology effectively during the delivery of day-to-day tasks.
Abaqus: Uses this tool/technology effectively during the delivery of day-to-day tasks.
OLGA: Uses this tool/technology effectively during the delivery of day-to-day tasks.
AutoCAD: Uses this tool/technology effectively during the delivery of day-to-day tasks.
SolidWorks: Uses this tool/technology effectively during the delivery of day-to-day tasks.

Provenance

The evidence base behind this profile — every layer is sourced; quality is scored by an adversarial review panel (1–5; passes at ≥4 on the minimum dimension).

Level differentiation5.0Focus specificity4.5Concreteness4.5Factual accuracy5.0Real-world coverage4.5

8 sources

Level — P6 — Principal Professional

Top individual contributor; recognized authority with strategic impact, equivalent to a low executive level

Scope: Organization-wide architecture and the hardest problems
Autonomy: Defines direction; minimal oversight
Complexity: Strategic, open-ended problems shaping the technical future
Impact: Organization-wide
Decision rights: Sets technical strategy for a major area
Leadership: Recognized authority; multiplies many teams
Typical experience: 12–18 yrs

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