Mechanical Engineer - Infrastructure Design

Parsons; Riyadh; On-site; SAR 246,000 - 391,000; Full time

Job summary

Parsons in Riyadh, Saudi Arabia, is seeking a Mechanical Engineer for infrastructure design to lead complex concept and detailed-design activities for mechanical systems serving tunnels and infrastructure. The role covers tunnel ventilation, HVAC, plumbing, chilled-water, and pumping systems, and requires reviewing third-party designs and guiding junior engineers in a high-stakes PMO context. The position is full-time with a strong senior focus.

Qualifications

• Bachelor's degree in Mechanical Engineering.
• 15 years of relevant mechanical-design experience.
• Strong background in concept and detailed engineering.
• Experience with tunnel ventilation, HVAC, plumbing, chilled-water, and pumping systems.
• Ability to perform pipe-sizing and pump-head calculations.
• Experience reviewing third-party designs and coordinating approval comments.
• Proven ability to prepare specifications, data sheets, drawings, and technical reports.
• Experience evaluating supplier submissions and technical bids.
• Strong understanding of multidisciplinary design coordination.
• Ability to guide designers, drafters, and junior engineers.
• Experience in a project-management office is preferred.

Responsibilities

• Perform concept and detailed-design engineering for infrastructure mechanical systems.
• Extract and interpret engineering information from CAD drawings and coordinated models.
• Develop tunnel-ventilation system designs and associated technical calculations.
• Design HVAC systems for tunnel, utility, operational, and supporting facilities.
• Prepare plumbing layouts, schematics, calculations, and equipment requirements.
• Complete pipe-sizing calculations for water and mechanical-service networks.
• Calculate pump heads for primary, secondary, and distribution chilled-water systems.
• Develop technical requirements for condenser-water systems.
• Design side-stream filtration arrangements and booster-pump systems.
• Prepare coordinated drawings, calculations, schedules, specifications, and design reports.
• Produce documentation suitable for tendering, procurement, construction, and commissioning.
• Develop and issue equipment specifications and technical data sheets.
• Coordinate mechanical designs with civil, structural, electrical, fire-safety, and other engineering disciplines.
• Resolve spatial, technical, and operational interfaces affecting mechanical systems.
• Review third-party designs and consolidate technical comments for approval.
• Assess supplier drawings, equipment selections, and material submissions.
• Perform technical analyses of contractor and supplier bids.
• Verify compliance with project requirements, engineering standards, and approved design criteria.
• Provide technical direction to CAD designers, drafters, junior engineers, and other project-team members.
• Review work produced by less-experienced personnel for accuracy and consistency.
• Support multidisciplinary teams where mechanical input is required.
• Advise senior management on significant mechanical-engineering matters.
• Manage major technical assignments or project work packages when required.
• Maintain design records and support the closure of technical comments.
• Perform other engineering responsibilities assigned by project leadership.

Skills

Mechanical infrastructure design

Tunnel ventilation

Education

Bachelor's degree in Mechanical Engineering

Job description

Mechanical Engineer - Infrastructure Design Job Snapshot Role: Mechanical Engineer - Infrastructure Design Location: Riyadh, Saudi Arabia Industry: Mechanical or Industrial Engineering Function: Mechanical Engineering Experience: Minimum 15 years Job Type: Full-time Position Overview Parsons is hiring a Mechanical Engineer - Infrastructure Design in Riyadh, Saudi Arabia for a major highways and infrastructure program within the Mechanical or Industrial Engineering industry. Working within a new project-management office, the engineer will lead complex concept and detailed-design activities for mechanical systems serving tunnels and associated infrastructure. The position covers tunnel ventilation, HVAC, plumbing, chilled-water systems, condenser-water networks, filtration systems, pumping calculations, specifications, and construction documentation. The successful candidate will also review third-party designs, coordinate multidisciplinary comments, and guide junior engineers and CAD professionals.

Job Details Country: Saudi Arabia City: Riyadh Industry: Mechanical or Industrial Engineering Function: Mechanical Engineering Salary: 22000-35000 SAR per month Estimated salary range based on similar jobs in Riyadh; please confirm the final offer with the employer. Gender: Any Candidate Nationality: Any Job Type: Full-time Role Context Major highway and tunnel developments require mechanical systems that maintain safe air quality, temperature control, drainage, water distribution, and emergency operating conditions. These systems must be technically accurate, coordinated with civil and electrical infrastructure, and suitable for reliable operation under demanding conditions. The Mechanical Engineer will provide senior design capability within the project-management office. High-quality calculations, coordinated technical documents, and thorough third-party reviews will support timely approvals, procurement, constructability, and long-term asset performance.

Key Responsibilities

• Perform concept and detailed-design engineering for infrastructure mechanical systems.
• Extract and interpret engineering information from CAD drawings and coordinated models.
• Develop tunnel-ventilation system designs and associated technical calculations.
• Design HVAC systems for tunnel, utility, operational, and supporting facilities.
• Prepare plumbing layouts, schematics, calculations, and equipment requirements.
• Complete pipe-sizing calculations for water and mechanical-service networks.
• Calculate pump heads for primary, secondary, and distribution chilled-water systems.
• Develop technical requirements for condenser-water systems.
• Design side-stream filtration arrangements and booster-pump systems.
• Prepare coordinated drawings, calculations, schedules, specifications, and design reports.
• Produce documentation suitable for tendering, procurement, construction, and commissioning.
• Develop and issue equipment specifications and technical data sheets.
• Coordinate mechanical designs with civil, structural, electrical, fire-safety, and other engineering disciplines.
• Resolve spatial, technical, and operational interfaces affecting mechanical systems.
• Review third-party designs and consolidate technical comments for approval.
• Assess supplier drawings, equipment selections, and material submissions.
• Perform technical analyses of contractor and supplier bids.
• Verify compliance with project requirements, engineering standards, and approved design criteria.
• Provide technical direction to CAD designers, drafters, junior engineers, and other project-team members.
• Review work produced by less-experienced personnel for accuracy and consistency.
• Support multidisciplinary teams where mechanical input is required.
• Advise senior management on significant mechanical-engineering matters.
• Manage major technical assignments or project work packages when required.
• Maintain design records and support the closure of technical comments.
• Perform other engineering responsibilities assigned by project leadership.

Ideal Profile

• Bachelor 's degree in Mechanical Engineering.
• Minimum 15 years of relevant mechanical-design experience.
• Strong background in concept and detailed engineering.
• Practical experience with tunnel ventilation, HVAC, plumbing, chilled-water, and pumping systems.
• Ability to perform pipe-sizing and pump-head calculations.
• Experience reviewing third-party designs and coordinating approval comments.
• Proven ability to prepare specifications, data sheets, drawings, and technical reports.
• Experience evaluating supplier submissions and technical bids.
• Strong understanding of multidisciplinary design coordination.
• Ability to guide designers, drafters, and junior engineers.
• Proactive approach to personal responsibilities and wider team requirements.
• Previous experience within a project-management office is preferred.
• Master 's degree in Mechanical Engineering would be advantageous.
• Chartered status with a recognized professional engineering body is desirable.
• Experience managing significant engineering tasks or project packages is beneficial.

Skills Set

• Mechanical infrastructure design
• Tunnel ventilation