Senior Process Engineer

Senior Process Engineer - Capital ProjectsINEOS 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, TXSalary Range: $125,000-175,000 (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 requiredAccountabilities of the JobProcess Engineering Expertise & Technical StewardshipLead 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 ISA84 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.Capital Project Development (FEL1–FEL3)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 EvaluationDevelop 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 FEL2.FEL2 – SelectionValidate 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 – DefinitionApprove 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.Detailed Engineering, Contractor Management & Quality AssuranceServe 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.Construction, Commissioning & Startup SupportProvide 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 redlines and as-built documentation for accuracy and contribute to project close-out and lessons learned.Accountable for the technical quality and integrity of process engineering deliverables, not for long-term asset operating results.Required ProfileEducation & ExperienceBachelor of Science in Chemical Engineering (required).7–10+ years of experience in petrochemicals, refining, or polymers process engineering.Owner's-team experience supporting stage-gated capital projects from FEL1 through Execute.Demonstrated experience delivering process engineering for both small projects and major capital projects.Technical SkillsProficiency with process simulation tools such as Aspen Plus or HYSYS.Strong working knowledge of API, ASME, ANSI, NFPA, PIP, OSHA, ISA, and company engineering standards.Expertise in equipment sizing and specification, hydraulics, relief systems, safeguarding/SIS, and process control philosophies.Strong engineering QA/QC and document control discipline.Our culture is one of honesty and integrity with an emphasis on safety, health and environmental performance. On our team, people are acknowledged for embracing new practices that help create real value for customers.