Mechanical​/Process Technical Lead

ACCIONA is a global company, leading in the development of regenerative infrastructure that creates a positive impact on society. Our workforce consists of more than 65,000 professionals, present in more than 40 countries across the five continents, all contributing in our mission to design a better planet. Are you a passionate individual who wants to make a difference, promote sustainable development, and find solutions to the biggest global challenges including climate change, overpopulation, and water scarcity?

Come and join us in building the infrastructure our planet needs to achieve a sustainable future.

Acciona offers a competitive salary, relocation assistance where relocation is required and approved, 401(k) retirement plan, medical, dental, vision, life, short and long‑term disability benefits, tuition reimbursement, paid time off, and more.

The Mechanical / Processes Technical Lead provides subject matter leadership for all mechanical and process systems associated with the Corpus Christi Desalination Plant. This role ensures that desalination process design, mechanical systems, and equipment selections are technically sound, constructible, reliable, energy efficient, and aligned with contractual performance requirements. It serves as the go‑to technical authority for seawater desalination process systems and mechanical equipment, working closely with the Engineering Manager, Construction team, Operations stakeholders, vendors, and external engineers to support design development, construction, commissioning, and handover into operations.

• Lead technical development and oversight of desalination treatment processes, including pretreatment, reverse osmosis, post‑treatment, cleaning systems, and associated utility systems.
• Provide subject‑matter expertise for mechanical equipment and systems, including pumps, pressure vessels, energy recovery devices, piping systems, valves, chemical dosing systems, and ancillary plant systems.
• Support development of process flow diagrams (PFDs), P&IDs, hydraulic profiles, and process calculations.
• Act as the primary mechanical/process technical escalation point for the project.

• Review and approve mechanical and process engineering deliverables prepared by internal teams, consultants, and vendors.
• Ensure designs comply with contract requirements, applicable codes and standards (AWWA, ASME, ASTM, API, OSHA), and desalination best practices.
• Participate in design reviews, interdisciplinary coordination meetings, HAZOP/HAZID sessions, and constructability reviews.
• Support engineering change evaluation and resolution of complex technical issues.
• Ensure the mechanical design meets required maturity at each milestone.

• Support the estimation process for all mechanical procurement and installation.
• Support procurement activities related to major mechanical and process equipment.
• Review vendor technical submittals, datasheets, drawings, and calculations.
• Participate in vendor evaluations, FATs, and technical negotiations as required.
• Ensure vendor designs are fully integrated with plant mechanical and process systems.

• Provide technical support during construction to address RFIs, field clarifications, and installation issues.
• Support mechanical completion, pre‑commissioning, commissioning, and performance testing.
• Coordinate with Operations and O&M teams to ensure systems are operable, maintainable, and aligned with long‑term operational strategies.
• Support troubleshooting during start‑up and early operations.

• Ensure mechanical and process designs support safe construction and operation of the facility.
• Support compliance with environmental permits and discharge requirements as they relate to process and mechanical systems.
• Contribute to technical documentation turnover including O&M manuals and as‑built records.

• Bachelor’s degree in Mechanical, Chemical, or related Engineering discipline; master’s degree preferred.
• Proven experience in mechanical/process engineering…