Senior Mechanical Engineer - Infrastructure

WSP USA; Riyadh; On-site; SAR 350,000 - 550,000; Full time

Benefits offered by this job

First class medical cover

Generous annual leave

Paid professional subscriptions

Job summary

WSP seeks a Senior Mechanical Engineer - Infrastructure in Riyadh to join our Transport & Infrastructure team. You will contribute to multidisciplinary infrastructure and masterplan projects, focusing on district cooling and gas networks.

You will produce calculations, reports, specifications, tender docs, and authority submissions, coordinating with clients, authorities, contractors, and internal disciplines to deliver safe, sustainable, buildable solutions in alignment with project goals.

Qualifications

• Bachelor's degree in Mechanical Engineering or related field.
• 8+ years of post-graduate experience in mechanical engineering, preferably in an international consultancy or infrastructure design.
• Demonstrable experience designing mechanical infrastructure systems (district cooling/chilled water and gas distribution).
• Experience with infrastructure, utilities, land development, or masterplan projects in Saudi Arabia or the Middle East is desirable.

Responsibilities

• Develop mechanical infrastructure designs for district cooling, chilled water, gas distribution, and utilities.
• Undertake design activities from concept to detailed design.
• Perform hydraulic modelling and engineering analyses for water and gas networks.
• Coordinate with civil, utilities, electrical, structural, and masterplanning teams.
• Prepare design calculations, equipment selections, and tender documentation.

Skills

District cooling

Chilled water

Gas distribution

Hydraulic modelling

Multidisciplinary coordination

Engineering calculations

Technical reporting

Client coordination

Education

Bachelor's degree in Mechanical Engineering

Tools

Bentley WaterGEMS

SISHYD/GasWorks

FLUIDIT

Job 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.

The 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.

Mechanical Infrastructure Design

• Develop mechanical infrastructure designs, calculations, specifications, schedules, reports, and drawings for district cooling, chilled water, gas distribution, and associated utility systems.
• Undertake concept, feasibility, preliminary, and detailed design activities for infrastructure and masterplan developments.
• Support cooling strategy studies, including district cooling and decentralised cooling options, considering technical, commercial, constructability, sustainability, and operational factors.
• Support gas supply studies and option assessments, including LPG, SNG, and other suitable solutions based on project requirements.
• Develop designs for gas farms, pressure regulating stations, distribution pipework, and associated mechanical infrastructure.
• Contribute to mechanical design interfaces for pump stations and other infrastructure facilities.

Modelling & Technical Analysis

• Undertake hydraulic modelling and engineering analysis for chilled water and gas networks using appropriate industry software.
• Prepare design calculations, equipment selections, technical assessments, and option comparison reports.
• Review modelling outputs and coordinate findings with civil, utilities, electrical, structural, and masterplanning teams.

Codes, Standards & Approvals

• Apply the Saudi Building Code, applicable Saudi authority requirements, Civil Defense requirements, NFPA, IGEM, ASHRAE, and relevant international standards.
• Prepare authority submission documentation and support the resolution of technical comments through to approval.
• Remain current with Saudi regulations, industry standards, emerging technologies, and good practice for mechanical infrastructure.

Project Delivery & Coordination

• Coordinate with multidisciplinary teams to deliver integrated infrastructure solutions.
• Prepare and review technical reports, design packages, tender documents, performance specifications, and procurement information.
• Review contractor shop drawings, material submittals, and technical queries during construction support stages.
• Attend progress meetings and technical workshops with clients, consultants, contractors, and authorities.
• Maintain accurate project records and technical documentation, and deliver assigned work to agreed programme, budget, and quality requirements.

Quality, Safety & Sustainability

• Follow project QA/QC procedures and undertake checking of calculations, drawings, reports, and specifications.
• Identify technical risks and support the development of practical mitigation measures.
• Develop solutions that consider safety, sustainability, cost, constructability, maintainability, and whole-life performance.

Team & Client Support

• Provide clear technical updates to project managers, discipline leads, and clients.
• Support and guide graduate and junior engineers, sharing technical knowledge and good practice.
• Contribute to design schedules, resource planning, fee estimates, and technical inputs to bids where required.

• Bachelor's degree in Mechanical Engineering or a related engineering discipline.

• Minimum 8+ years of post-graduate experience in mechanical engineering, preferably within an international engineering consultancy or infrastructure design environment.

• Demonstrable experience designing mechanical infrastructure systems, particularly district cooling/chilled water and gas distribution networks.

• Experience supporting infrastructure, utilities, land development, or masterplan projects in Saudi Arabia or the wider Middle East is highly desirable.

• Knowledge of the Saudi Building Code, Saudi authority requirements, Civil Defense requirements, NFPA, IGEM, ASHRAE, and relevant international standards.

• Experience with hydraulic modelling tools for chilled water and gas networks. Familiarity with Bentley WaterGEMS, SISHYD/GasWorks, FLUIDIT, or comparable software is advantageous.

• Experience preparing design calculations, technical reports, specifications, tender documentation, and authority approval packages.

• Ability to review shop drawings and material submittals and provide construction-stage technical support.

• Strong written and verbal communication skills, with the ability to work effectively in multidisciplinary and multicultural teams.

• Professional membership or progress toward chartership or equivalent registration is desirable.

What 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!

WSP 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.

As well as rewarding you with competitive pay, WSP offers standard benefits including first class medical cover, generous days annual leave, and paid professional subscriptions.

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.