At Hays, we are collaborating with a leading international engineering and technology company, recognized for delivering complex industrial and energy projects worldwide. We are currently seeking a Senior Process Engineer to join their growing team, working on high-impact power generation projects (Power Plants) in a dynamic and multidisciplinary environment, covering all engineering phases from conceptual design to detailed engineering. This position offers the opportunity to contribute to technically challenging projects within the power sector, collaborating with global stakeholders and experienced engineering professionals. Key Responsibilities:Develop and review process engineering deliverables across all project phases ( conceptual, FEED and detailed engineering)Perform process calculations including mass and energy balancesPrepare and review PFDs, P&IDs, and technical documentationSize and design process equipment and systemsParticipate in technical reviews such as HAZOP, HAZID and design reviewsCoordinate with multidisciplinary teams, clients, vendors and licensorsSupport project execution, ensuring quality and timely delivery of engineering documentationSupervise and guide junior engineers when required Requirements:Degree in Chemical Engineering, Industrial Engineering or related discipline...At least 8 years of experience in process engineering within the energy/power sector (Power Plants).Proven hands-on experience in design engineering (FEED and detailed engineering)Strong knowledge of:-Power plants (combined cycle, cogeneration, biomass, renewables or similar)-Process simulations and calculations-Equipment sizing and thermal design-Engineering documentation (PFD, P&ID, datasheets, specifications)Experience working in engineering companies (EPC or similar environments)Ability to work in multidisciplinary and international projects.Advanced level of EnglishBased in Spain. What We Offer:Ful time permanent/freelance contract.Opportunity to work on technically complex and innovative energy projectsExposure to international projects and multidisciplinary collaborationLong-term career growth opportunities in a highly skilled engineering environment.Offices in Spain: Madrid, Bilbao. If you are looking to take the next step in your career within the energy sector, we encourage you to apply, so we can reach out for a confidential discussion.