Mechanical / Process Technical Lead

Acciona S.A; Corpus Christi (TX); On-site; USD 120,000 - 170,000; Full time

Job summary

ACCIONA is seeking a Mechanical/Processes Technical Lead for the Corpus Christi Desalination Plant. The role provides leadership for mechanical and process systems, ensuring design soundness, reliability, and energy efficiency in line with contract requirements.

Responsibilities include reviewing engineering deliverables, coordinating with multidisciplinary teams, supporting procurement and construction, and guiding commissioning activities to achieve project milestones.

Qualifications

• Bachelor’s degree in Mechanical, Chemical, or related Engineering.
• Experience in mechanical/process engineering for water, wastewater, or desalination facilities.
• Experience with SWRO desalination plants or advanced water treatment.
• Hands-on with pumps, pressure vessels, piping, chemical systems, and hydraulics.
• Experience with EPC, design-build, or DBO project delivery preferred.
• Ability to support field execution and commissioning.

Responsibilities

• Lead desalination process and mechanical design across pretreatment to post-treatment.
• Provide SME for pumps, piping, energy recovery devices, and valves.
• Develop PFDs, P&IDs, hydraulic profiles, and calculations.
• Coordinate design reviews and HAZOP/HAZID sessions.
• Support procurement, vendor submittals, FATs, and interface with vendors.
• Assist construction, commissioning, and performance testing.
• Ensure designs meet codes (AWWA, ASME, ASTM, API, OSHA) and safety.
• Ensure project maintains maturity at milestones.

Skills

Pumps

Pressure systems

Piping networks

Chemical systems

Hydraulic design

Troubleshooting

Cross-disciplinary coordination

Operations-focused mindset

Education

Bachelor’s degree in Mechanical, Chemical, or related Engineering

Master’s degree preferred

Job description

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.

• 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

The Mechanical / Processes Technical Lead provides subject matter leadership for all mechanical and process systems associated with the Corpus Christi Desalination Plant.

This role is responsible for ensuring that desalination process design, mechanical systems, and equipment selections are technically sound, constructible, reliable, energy efficient, and aligned with contractual performance requirements.

Process & Mechanical Technical Leadership 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.

Design Review & Engineering Coordination

• 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.
• Ensures the mechanical Design meets required maturity at each milestone.

Procurement & Vendor Interface

• 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.

Construction, Commissioning & Start‑Up

• 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.

Quality, Safety & Compliance

• 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.

Required Skills and Competencies

• Bachelor’s degree in Mechanical, Chemical, or related Engineering discipline, master’s degree preferred.
• Proven experience in mechanical/process engineering for water, wastewater, or desalination facilities.
• Demonstrated experience with seawater reverse osmosis (SWRO) desalination plants or advanced water treatment facilities.
• Strong hands‑on experience with pumps, pressure systems, piping networks, chemical systems, and hydraulic design.
• Experience supporting EPC, design‑build, or DBO project delivery preferred.
• Deep technical expertise in desalination process and mechanical systems.
• Strong analytical and troubleshooting skills.
• Cross‑disciplinary coordination and communication.
• Practical, operations‑focused engineering mindset.
• Ability to support field execution and commissioning activities.

ACCIONA has been given the Top Employer 2022, 2023, 2024 & 2025 certification in US, as well as the Top Employers North America 2022, 2023, 2024 & 2025 seal, which certifies the company's commitment to excellence in human resources management and those who focus on putting their people first through their exceptional HR policies.

As a company that values diversity as a source of talent, we work to foster an inclusive environment that promotes respect, belonging and engagement so that all people can participate on an equal opportunity basis.

We invite everyone to apply regardless of origin, circumstances, background or condition.