Associate Director Building Services (Mechanical)

📣 إعلان

منذ يوم واحد

	نوع العقد	دوام كامل
	طبيعة الوظيفة	بالموقع
	الموقع	الرياض

وصف الوظيفة

About the Role

WSP in the Middle East is seeking a Specialist – Mechanical – Metro stations to join our team in Riyadh, Saudi Arabia. This full-time role involves owning the end-to-end mechanical station fit-out design for rail, metro, and train stations. The successful candidate will manage projects through concept, schematic, detailed/IFC, tender, and construction support phases.

Key Responsibilities

Lead station HVAC & ventilation design for underground, at-grade, and elevated stations, including cooling/heating load estimates, plant sizing (chilled water/DX/VRF), AHU/FAHU/FCU selection, filtration strategy, and ventilation/pressurization of platforms, concourses, back-of-house, and plantrooms.
Engineer smoke control & TVS systems, covering fan, shaft, and damper sizing/arrangement; platform & concourse smoke layer management; stair & lift lobby pressurization; PSD heat load coordination; and emergency modes and control logic.
Manage technical room cooling & resilience, including N+1 redundancy and environmental control for S&T/relay/SCADA/UPS rooms, communications, and data spaces, along with thermal runaway risk checks and alarm set-points.
Apply high-ambient design principles such as equipment derating, coil selections, corrosion mitigation, airside economizer feasibility, sand-ingress protection, and acoustic and indoor air-quality criteria.
Oversee digital delivery, including Revit/AutoCAD & Navisworks BIM coordination, clash prevention, interface matrices, structured model reviews, and information exchange (BEP compliance).
Prepare calculations & deliverables, including Basis-of-Design, detailed calculations, P&IDs/schematics, control sequences, layouts/sections/details, equipment schedules, specifications/BOQs, and performance ERs.
Conduct analysis & verification, utilizing CFD/FDS for smoke and comfort, SES or equivalent for tunnel/station ventilation where applicable, and participate in egress and fire strategy interface workshops.
Manage approvals & stakeholders, including KSA authority submissions, multidisciplinary design reviews, value engineering, and risk registers.
Provide construction support, responding to RFIs, reviewing vendor submittals, witnessing FAT/SAT, and supporting T&C and seasonal commissioning.
Contribute to team leadership by mentoring engineers/designers, planning workloads, performing QA/QC on deliverables, and contributing to proposals/level-of-effort.

Qualifications and Experience

A minimum of 10 years of relevant experience in mechanical design for metro stations.
Demonstrated experience in HVAC, environmental control, smoke control/TVS, stairwell/room pressurization, cooling of technical spaces, and integration with BMS/SCADA.
Proficiency in digital delivery tools such as Revit/AutoCAD and Navisworks for BIM coordination.

Preferred Attributes

Experience with district cooling interface design and energy modelling/optimization for high-ambient climates.
Familiarity with tunnel ventilation interactions and evacuation scenarios in multi-station corridors.
Prior approvals experience with Riyadh Civil Defense/SBC.
Knowledge of RAMS (EN 50126/8/9) and reliability-led design.

Work Environment

This is a full-time position based in Riyadh, Saudi Arabia, within WSP in the Middle East. The role involves working on significant infrastructure projects, specifically metro stations.