{"id":1679351,"url":"https://alion.io/job/wsp-senior-mechanical-engineer-infrastructure","title":"Senior Mechanical Engineer - Infrastructure","company":{"id":1668012,"name":"WSP","domain":"wsp.ca","url":"https://alion.io/company/wsp-ca","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"B","score":70,"open_postings":31,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":70,"computed_at":"2026-10-03T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Riyadh, Saudi Arabia"],"countries":["SA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":47000,"max_usd":106000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":3947},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-02T06:50:51Z","employer_posted_date":"2026-10-02","last_verified_at":"2026-10-03T23:50:47Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"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.\nThe 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.\n Mechanical Infrastructure Design\nDevelop mechanical infrastructure designs, calculations, specifications, schedules, reports, and drawings for district cooling, chilled water, gas distribution, and associated utility systems.\nUndertake concept, feasibility, preliminary, and detailed design activities for infrastructure and masterplan developments.\nSupport cooling strategy studies, including district cooling and decentralised cooling options, considering technical, commercial, constructability, sustainability, and operational factors.\nSupport gas supply studies and option assessments, including LPG, SNG, and other suitable solutions based on project requirements.\nDevelop designs for gas farms, pressure regulating stations, distribution pipework, and associated mechanical infrastructure.\nContribute to mechanical design interfaces for pump stations and other infrastructure facilities.\nModelling & Technical Analysis\nUndertake hydraulic modelling and engineering analysis for chilled water and gas networks using appropriate industry software.\nPrepare design calculations, equipment selections, technical assessments, and option comparison reports.\nReview modelling outputs and coordinate findings with civil, utilities, electrical, structural, and masterplanning teams.\nCodes, Standards & Approvals\nApply the Saudi Building Code, applicable Saudi authority requirements, Civil Defense requirements, NFPA, IGEM, ASHRAE, and relevant international standards.\nPrepare authority submission documentation and support the resolution of technical comments through to approval.\nRemain current with Saudi regulations, industry standards, emerging technologies, and good practice for mechanical infrastructure.\nProject Delivery & Coordination\nCoordinate with multidisciplinary teams to deliver integrated infrastructure solutions.\nPrepare and review technical reports, design packages, tender documents, performance specifications, and procurement information.\nReview contractor shop drawings, material submittals, and technical queries during construction support stages.\nAttend progress meetings and technical workshops with clients, consultants, contractors, and authorities.\nMaintain accurate project records and technical documentation, and deliver assigned work to agreed programme, budget, and quality requirements.\nQuality, Safety & Sustainability\nFollow project QA/QC procedures and undertake checking of calculations, drawings, reports, and specifications.\nIdentify technical risks and support the development of practical mitigation measures.\nDevelop solutions that consider safety, sustainability, cost, constructability, maintainability, and whole-life performance.\nTeam & Client Support\nProvide clear technical updates to project managers, discipline leads, and clients.\nSupport and guide graduate and junior engineers, sharing technical knowledge and good practice.\nContribute to design schedules, resource planning, fee estimates, and technical inputs to bids where required.\nBachelor's degree in Mechanical Engineering or a related engineering discipline.\nMinimum 8+ years of post-graduate experience in mechanical engineering, preferably within an international engineering consultancy or infrastructure design environment.\nDemonstrable experience designing mechanical infrastructure systems, particularly district cooling/chilled water and gas distribution networks.\nExperience supporting infrastructure, utilities, land development, or masterplan projects in Saudi Arabia or the wider Middle East is highly desirable.\nKnowledge of the Saudi Building Code, Saudi authority requirements, Civil Defense requirements, NFPA, IGEM, ASHRAE, and relevant international standards.\nExperience with hydraulic modelling tools for chilled water and gas networks. Familiarity with Bentley WaterGEMS, SISHYD/GasWorks, FLUIDIT, or comparable software is advantageous.\nExperience preparing design calculations, technical reports, specifications, tender documentation, and authority approval packages.\nAbility to review shop drawings and material submittals and provide construction-stage technical support.\nStrong written and verbal communication skills, with the ability to work effectively in multidisciplinary and multicultural teams.\nProfessional membership or progress toward chartership or equivalent registration is desirable. \nWhat 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!\nWSP 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.\nAs well as rewarding you with competitive pay, WSP offers standard benefits including first class medical cover, generous days annual leave, and paid professional subscriptions.\nImagine a better future for you and a better future for us all.\nJoin 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.\nWith us, you can. Apply today","description_format":"text","description_chars":6153,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Annual leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-02T09:24:23Z"}],"visa":[],"liveness":{"score":60,"band":"ok","label":"Likely open","p_open":1,"p_active":0.602,"p_room":1,"age_days":0,"expected_fill_days":70,"reasons":["conf:9","stale_co","win:early","comp:brand"],"computed_at":"2026-10-03T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/wsp-senior-mechanical-engineer-infrastructure","json_url":"https://alion.io/job/wsp-senior-mechanical-engineer-infrastructure.json","meta":{"generated_at":"2026-10-04T00:13:09Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":175,"day_limit":5000,"remaining_today":4825,"minute_limit":60,"resets_at":"2026-10-05T00:00:00Z"}}}