Staff Engineer - EPCM

Job Description:

Process and Mechanical Basic Engineering:

• Develop concept- and basic-engineering deliverables for hydrogen production facilities, including design basis documents, operating cases, process descriptions, process flow diagrams, preliminary heat and material balances, utility summaries, equipment lists, line lists, P&IDs, equipment datasheets, and process/mechanical scope documents.
• Develop, maintain, and independently use auditable Excel-based engineering models for preliminary calculations, with clear assumptions, units, input/output separation, error checks, sensitivity cases, revision control, and calculation notes.
• Perform first-principles and spreadsheet-based calculations for gas-flow conversion, mass balance, preliminary compressor duty and power, buffer and storage capacity, filling cycles, pressure drop, cooling duty, utility consumption, vent/drain loads, and other concept- and basic-engineering requirements.
• Define process conditions, design pressures and temperatures, turndown and operating scenarios, utilities, control interfaces, tie-ins, battery limits, and project-specific design assumptions.
• Prepare preliminary equipment sizing and selection inputs and establish the technical basis required for supplier quotations and EPC pricing.
• Review and challenge calculations, simulations, datasheets, and design inputs received from Applications Engineering, EPC contractors, consultants, and vendors.
• Recognize the limits of preliminary calculations and identify when specialist simulation, dynamic analysis, detailed stress analysis, safety studies, or third-party validation is required.
• Identify process and mechanical integration risks related to pressure, temperature, flow, materials compatibility, water quality, drainage, venting, relief, control philosophy, start-up, shutdown, and abnormal operating scenarios.

Hydrogen Downstream Systems and Mechanical Packages:

• Define technical and interface requirements for hydrogen compression packages, including inlet/outlet conditions, flow, pressure ratio, compression stages, cooling, utilities, controls, footprint, access, maintainability, noise, vibration, installation, and performance guarantees.
• Develop sizing and specification inputs for buffer vessels, pressure vessels, high-pressure storage systems, gas coolers, dryers, purifiers, separators, filters, condensate handling, and associated piping, valves, instruments, and utility systems.
• Support the technical definition and integration of hydrogen delivery and downstream applications, including tube-trailer loading bays, cylinder or cascade filling, hydrogen dispensers and refueling stations, storage and export systems, and project-specific pipeline or off-taker interfaces.
• Define mechanical package battery limits and interfaces with the electrolyzer, water systems, electrical supply, controls, safety systems, civil works, buildings, drainage, vents, and EPC plant design.
• Review package layouts, utility loads, nozzle and connection requirements, vendor drawings, foundation loads, access and maintenance clearances, lifting requirements, and installation constraints.
• Evaluate material selection and compatibility for hydrogen and utility services, considering pressure, temperature, purity, corrosion, embrittlement risk, cleanliness, and applicable project requirements.
• Support technical optimization and value engineering.

Supplier RFQ, Technical Evaluation and Cost Estimation:

• Identify and prequalify suitable suppliers and package vendors
• Prepare complete technical RFQ packages, including datasheets.
• Manage supplier technical clarifications and quotation timelines
• Prepare technical quotation evaluations, deviation lists, clarification logs, and recommendation summaries; and identify scope or pricing gaps.
• Develop budgetary and basic-engineering CAPEX estimates and detailed cost breakdowns for process and mechanical BOP.
• Develop and maintain Excel-based cost models and a structured cost database.
• Prepare preliminary BOMs, BOQs, and MTOs
• Identify cost-reduction opportunities, alternative technical solutions, and supplier strategies.

EPC Partner and Project Execution Support:

• Support EPC partner engagement during project development phase
• Review relevant EPC and vendor deliverables for alignment with the agreed design basis, scope, performance requirements, and equipment interfaces.
• Support technical query resolution, design reviews, interface coordination, change-impact assessment, and closure of preliminary engineering assumptions during project execution.
• Participate in HAZID, HAZOP, design reviews, constructability reviews.
• Provide occasional site and construction support for technical clarification, installation readiness, package interfaces, testing, and commissioning preparation;

EDUCATION AND EXPERIENCE REQUIRED :

• Bachelor's degree in Chemical Engineering, Process Engineering, Mechanical Engineering, or a closely related discipline. Post graduation in any engineering discipline is a plus.
• 8-12+ years of relevant experience in process engineering, mechanical package engineering, applications engineering, within hydrogen, industrial gas, oil and gas, petrochemical, chemical, gas compression, CNG/LNG, or related industries is desired.
• At least 3 years of hands-on experience in process or mechanical basic engineering, equipment sizing, cost estimation, supplier RFQs, or techno-commercial package evaluation.
• Demonstrated experience with several of the following: compressors, buffer or storage vessels, pressure vessels, gas dryers/purifiers, cooling systems, high-pressure gas piping, loading systems, dispensers/refueling systems, or industrial gas utilities.
• Demonstrated experience preparing engineering calculations, datasheets, RFQs, technical quotation evaluations, budgetary estimates, BOMs/BOQs/MTOs, and scope or battery-limit documents.
• Experience working for an EPC contractor, engineering consultant, or hydrogen technology provider is strongly preferred.

The EPCM Engineer is a hands-on individual-contributor role within the EPCM function, responsible for process and mechanical basic engineering, supplier engagement, technical RFQs, cost estimation, and integration of hydrogen Balance of Plant and downstream systems.

Ohmium is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.