Senior Mechanical Engineer - Infrastructure

WSP is seeking a Senior Mechanical Engineer - Infrastructure to join our Transport & Infrastructure team in Riyadh, Saudi Arabia. The role will support the design and delivery of multidisciplinary infrastructure and masterplan projects, with a particular focus on district cooling and chilled water networks, gas distribution systems, mechanical utilities, and pump station interfaces. The successful candidate will produce engineering calculations, models, technical reports, specifications, tender documentation, and authority submission packages. Working under the direction of senior technical leaders, the Senior Mechanical Engineer will coordinate with clients, authorities, contractors, and internal disciplines to deliver safe, sustainable, buildable, and cost-effective engineering solutions. Bachelor's degree in Mechanical Engineering or a related engineering discipline. Minimum 8+ years of post-graduate experience in mechanical engineering, preferably within an international engineering consultancy or infrastructure design environment. Demonstrable experience designing mechanical infrastructure systems, particularly district cooling/chilled water and gas distribution networks. Experience supporting infrastructure, utilities, land development, or masterplan projects in Saudi Arabia or the wider Middle East is highly desirable. Knowledge of the Saudi Building Code, Saudi authority requirements, Civil Defense requirements, NFPA, IGEM, ASHRAE, and relevant international standards. Experience with hydraulic modelling tools for chilled water and gas networks. Familiarity with Bentley WaterGEMS, SISHYD/GasWorks, FLUIDIT, or comparable software is advantageous. Experience preparing design calculations, technical reports, specifications, tender documentation, and authority approval packages. Ability to review shop drawings and material submittals and provide construction-stage technical support. Strong written and verbal communication skills, with the ability to work effectively in multidisciplinary and multicultural teams. Professional membership or progress toward chartership or equivalent registration is desirable. What if we can have work-life balance? What if we can be rewarded in ways that support our individual needs? What if we can be accepted for who we are? Here at WSP – we can! WSP recognizes that work is only one part of our lives and making time for the other things in our life is important – be that our families, our friends or ourselves. So, if working from home, working part-time or having flexible start and finish time will help with this let us know as part of your application. As well as rewarding you with competitive pay, WSP offers standard benefits including first class medical cover, generous days annual leave, and paid professional subscriptions. Imagine a better future for you and a better future for us all. Join our close-knit community of talented individuals who share your passion for making a positive impact. Our global team includes more than 69,000 employees, working together to make a difference in communities both close to home and around the world. With us, you can. Apply today