Assistant Director - Building Services (Mechanical)

Job description

the employer in the Middle East is currently hiring a Specialist - Mechanical - Metro stations to join our team in Riyadh, Saudi Arabia. The successful candidate will own the end-to-end mechanical station fit-out design for rail/metro/train stations-covering HVAC, environmental control, smoke control/TVS, stairwell/room pressurization, cooling of technical spaces, and integration with BMS/SCADA-through concept, schematic, detailed/IFC, tender, and construction support. • Lead station HVAC & ventilation design (underground, at-grade, elevated): cooling/heating load estimates, plant sizing (chilled water/DX/VRF), AHU/FAHU/FCU selection, filtration strategy (sand/dust), ventilation/pressurization of platforms, concourses, back-of-house and plantrooms. • Engineer smoke control & TVS: fan, shaft and damper sizing/arrangement; platform & concourse smoke layer management; stair & lift lobby pressurization; PSD heat load coordination; emergency modes and control logic. • Technical room cooling & resilience: N+1 redundancy and environmental control for S&T/relay/SCADA/UPS rooms, communications and data spaces; thermal runaway risk checks and alarm set-points. • High-ambient design: equipment derating, coil selections, corrosion mitigation, airside economizer feasibility, sand-ingress protection, acoustic and indoor air-quality criteria. • Digital delivery: Revit/AutoCAD & Navisworks BIM coordination, clash prevention, interface matrices; structured model reviews and info-exchange (BEP compliance). • Calculations & deliverables: Basis-of-Design, detailed calcs, P&IDs/schematics, control sequences, layouts/sections/details, equipment schedules, specifications/BOQs, performance ERs. • Analysis & verification: CFD/FDS for smoke and comfort, SES or equivalent for tunnel/station ventilation where applicable; egress and fire strategy interface workshops. • Approvals & stakeholders: manage KSA authority submissions; lead multidisciplinary design reviews; run value engineering and risk registers. • Construction support: respond to RFIs, review vendor submittals, witness FAT/SAT, support T&C and seasonal commissioning. • Team leadership: mentor engineers/designers; plan workloads, QA/QC deliverables, and contribute to proposals/level-of-effort

Requirements

• Bachelor’s or Master’s degree in Electrical Engineering.
• Professional registration (e.g., CEng/PE) strongly preferred.
• 12–18+ years in building services with major rail/metro station HVAC/ventilation delivery in design consultancy
• GCC experience strongly preferred.
• Proven expertise in:
• Station HVAC, ventilation and smoke control/pressurization to NFPA/EN standards.
• Cooling of critical technical rooms with resilience (N+1, duty/standby).
• Writing control philosophies/sequences and BMS/SCADA integration.
• BIM coordination (Revit/Navisworks) and production of IFC-ready deliverables.
• Tools: HAP/IES/TRACE (or equivalent), CFD/FDS, SES (or similar), MS Office.
• Strong stakeholder skills and the ability to lead workshops with client, operator, and authorities.
• Nice to Have
• District cooling interface design
• energy modelling/optimization for high-ambient climates.
• Experience with tunnel ventilation interactions and evacuation scenarios in multi-station corridors.
• Prior approvals experience with Riyadh Civil Defense/SBC.
• RAMS familiarity (EN 50126/8/9) and reliability-led design.
• 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.

Skills