Senior Process Engineer

Senior Process Engineer - Capital Projects

INEOS Olefins & Polymers USA is looking for a Senior Process Engineer for Capital Projects. This role involves providing process design expertise, owner's-team leadership, and technical stewardship at the project and asset level across the Olefins & Polymers asset base. The position leads development and assurance of process engineering deliverables for capital projects, reliability improvements, and operational enhancements.

Location:

League City, TX

Salary Range: $,000 (Pay is based on several factors including but not limited to education, work experience, certifications, etc.)

Travel:
Minimal; limited to local contractor offices, nearby fabrication shops, or plant sites as required

Accountabilities of the Job

Lead development of Heat & Material Balances using rigorous simulation and sound engineering fundamentals, covering normal, startup/shutdown, upset, turndown, and emergency scenarios, including utility and relief implications.

Apply strong process design fundamentals to develop and review major equipment specifications, including reactors, columns, furnaces, heat exchangers, compressors, pumps, tanks, fired heaters, and utility systems.

Produce and assure high-quality PFDs, P&IDs, line lists, hydraulic calculations, control narratives, safeguarding philosophies, and Cause & Effect matrices, ensuring internal consistency across all deliverables.

Provide technical input to relief system design, SIS requirements, interlock schematics, and flare or disposal system basis, applying IEC 61511 and ISA
84 principles.

Embed process safety through participation in HAZOP, LOPA, SIL determination, and facility siting, and steward timely closeout of actions.

Maintain process integrity through disciplined Management of Change.

Lead frontend process engineering using sound engineering judgment and technical trade-off evaluation, comparing options for lifecycle value including capital cost, operating cost, energy efficiency, operability, reliability, and risk.

FEL1 – Opportunity Evaluation

Develop Options Maps and Scope of Facilities; define initial process philosophies and conceptual Heat & Material Balances.

Identify early permitting constraints and support Class V estimate inputs and high-level schedule logic.

Establish the Process Engineering Quality Management Plan for FEL
2.

FEL2 – Selection

Validate and update the BEDD and contribute to development of the Project Design Basis.

Participate in Optioneering and Value Improvement Practices.

Provide rigorous QA/QC of contractor process deliverables, challenging assumptions and ensuring alignment with the approved design basis.

Support interdisciplinary reviews and development of Class III estimates.

FEL3 – Definition

Approve key process deliverables and steward closure of open technical decisions and action items.

Confirm readiness of process engineering packages for transition to Execute and EPC phases.

Validate process assumptions used in Class II and Class III estimates.

Serve as Owner's Process Lead for assigned projects during detailed design, ensuring alignment with the approved design basis and safeguarding requirements.

Review contractor deliverables including PFDs, P&IDs, hydraulic calculations, equipment datasheets, relief designs, and control narratives.

Critically review change notifications and distinguish legitimate scope changes from design evolution.

Resolve cross-discipline issues with Mechanical, Electrical, Instrumentation & Controls, Civil/Structural, and Process Control.

Drive early identification and closure of design gaps to reduce late changes and rework.

Provide process engineering support during construction, including response to field queries and review of deviations relative to design intent.

Participate in PSSR, pre-commissioning, and commissioning readiness activities.

Support startup activities including control loop tuning support, SIS validation support, troubleshooting, and performance testing.

Review…