Senior Mechanical Engineer - Building Services

Location: Doha, Ad Dawhah, Qatar

Department: Mechanical

Work Location: onsite

Building on our past. Ready for the future

Worley is a global professional services company of energy, chemicals and resources experts. We partner with customers to deliver projects and create value over the life of their assets. We’re bridging two worlds, moving towards more sustainable energy sources, while helping to provide the energy, chemicals and resources needed now.

Key Responsibilities:

• Support the design and delivery of building services across industrial and infrastructure projects.
• lead the development of safe, compliant, and cost-effective engineering solutions in accordance with international standards such as NFPA, ASHRAE, and local regulations.

Engineering Design & Technical

• Lead the design and development of:
  • Fire protection systems (hydrants, sprinklers, foam, clean agent systems)
  • Domestic water supply systems (potable and non-potable)
  • Drainage systems (sanitary, stormwater, oily water, condensate)
• Perform system calculations, including:
  • Firewater demand and hydraulic calculations
  • Pipe sizing and system design optimization
• Prepare engineering deliverables:
  • Design basis reports, calculations, and specifications
  • System schematics, layouts, and detailed drawings
  • Equipment datasheets and technical documentation

Fire Protection Engineering

• Design and review:
  • Firewater networks (pumps, storage, distribution)
  • Sprinkler, water spray, hydrant, and hose reel systems
• Ensure compliance with NFPA standards and local civil defense requirements
• Develop fire protection philosophies, layouts, and system calculations

Plumbing & Drainage Systems

• Design complete plumbing systems, including:
  • Domestic cold and hot water systems
  • Utility water supply for maintenance and operational use
• Design and coordinate drainage systems:
  • Sanitary drainage
  • Stormwater systems and discharge arrangements
• Interface with external utilities for water supply and drainage tie-ins

Education – Qualifications, Accreditation, Training:

• Full-Time Bachelor’s Degree in Mechanical Engineering from an accredited university
• MME (Ministry of Municipality and Environment) engineering accreditation is a mandatory requirement. Candidates not holding this accreditation must be willing to achieve this within the probationary period.
• Chartered Professional Engineer (CPEng) status or undertaking the same will be an advantage

Industry Specific Experience:

• Highly experienced Senior Building Services Engineer specializing in fire protection, water supply, and drainage systems to support the design and delivery of building services across industrial and infrastructure projects.
• Engineering experience in the same or similar industry, including experience in multi-disciplinary projects and teams.
• Good knowledge of discipline design/engineering with sufficient experience in different discipline areas.

Moving forward together

We’re committed to building a diverse, inclusive and respectful workplace where everyone feels they belong, can bring themselves, and are heard. We provide equal employment opportunities to all qualified applicants and employees without regard to age, race, creed, color, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by law.

We want our people to be energized and empowered to drive sustainable impact. So, our focus is on a values-inspired culture that unlocks brilliance through belonging, connection and innovation.

And we're not just talking about it; we're doing it. We're reskilling our people, leveraging transferable skills, and supporting the transition of our workforce to become experts in today's low carbon energy infrastructure and technology.

Whatever your ambition, there’s a path for you here. And there’s no barrier to your potential career success. Join us to broaden your horizons, explore diverse opportunities, and be part of delivering sustainable change.