Senior Technical Mechanical Engineer Plumbing & Fire Fighting % (M/F)📣 Job Ad

About ARX | Smart Minds

ARX | Smart Minds is a global network specializing in engineering, design, and architecture. The company provides 360-degree consulting, project management, and technical services across various sectors including airports, bridges, buildings, and digital innovation. With offices spanning Europe, North and South America, Asia, Africa, and Oceania, ARX combines global expertise with local knowledge to address community needs while adhering to international best practices. ARX is expanding its presence in the Middle East with offices in the UAE and KSA, reinforcing its commitment to engineering excellence in the GCC market.

Role Overview

ARX | Smart Minds is seeking a Senior Technical Mechanical Engineer (Plumbing & Fire Fighting) for a full-time position in Al Madinah, Saudi Arabia. This role requires extensive experience in technical-office and design review for plumbing, drainage, domestic water, rainwater, gas, fire-fighting, and active fire life safety systems. The ideal candidate will have a minimum of 10 years of experience, specifically within high-rise, hospitality, mixed-use, or large-scale commercial developments in Saudi Arabia.

Key Responsibilities

• Lead technical-office reviews for plumbing, drainage, domestic water, rainwater, gas, fire-fighting, and specialist suppression systems.
• Perform and audit hydraulic and sizing calculations for booster pumps, PRV stations, pressure zones, domestic hot water systems, drainage fixture units, and stormwater flow rates.
• Prepare and validate fire-fighting hydraulic calculations for standpipes, sprinkler systems, fire pumps, hydrants, pre-action systems, and clean-agent suppression systems.
• Check plumbing and fire-fighting shop drawings, single-line schematics, isometric piping diagrams, sprinkler layouts, pump room details, riser diagrams, and coordinated BIM outputs.
• Assess material submittals, technical datasheets, compliance sheets, and vendor documentation for pumps, valves, pipes, fittings, backflow preventers, hydrants, tanks, and specialty suppression systems.
• Coordinate plumbing and fire-fighting interfaces with architecture, structure, HVAC, electrical, ELV/BMS, fire life safety, BIM, and site teams.
• Ensure technical alignment with Saudi Civil Defense requirements, National Water Company connection requirements, Saudi Building Code provisions, NFPA codes, IPC/UPC principles, UL/FM requirements, and SASO standards.
• Generate and check flushing, chlorination, pressure testing, hydrostatic testing, commissioning, and handover procedures.
• Identify technical gaps, compliance issues, constructability concerns, and interface clashes, then issue clear actions for resolution.
• Participate in consultant/client reviews, authority coordination, technical workshops, and specialist supplier discussions.

Candidate Requirements

• Minimum of 10 years of experience in technical-office and design review, specifically in plumbing and fire-fighting systems.
• Demonstrated experience with high-rise, hospitality, mixed-use, or large-scale commercial developments in Saudi Arabia.
• Strong hydraulic calculation capabilities.
• Proficiency in detailed shop drawing and material-submittal review.
• Knowledge of Saudi Civil Defense and water-authority requirements.
• Ability to coordinate effectively with consultants, contractors, BIM teams, specialist suppliers, and site teams.

Professional Development

ARX offers opportunities for collaboration within an innovative team and exposure to projects contributing to development in the Middle East and North Africa. The company supports personalized professional growth and developmental avenues tailored to career aspirations.

Application Process

Interested candidates are invited to submit their complete application to join the ARX team.