Mechanical Engineer - Infrastructure Design
Posted date [2026-08-02]
(ID: 48909)
Job Description and Requirements
Mechanical Engineer - Infrastructure DesignJob 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
The engineer will manage technically complex mechanical-design assignments from early concepts through construction-ready documentation.
* 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
The preferred candidate is a senior mechanical-design professional with substantial infrastructure experience and the ability to work effectively within a multidisciplinary project-management office.
* 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 systems
* HVAC design
* Plumbing systems
* Chilled-water systems
* Condenser-water systems
* Pipe-sizing calculations
* Pump-head calculations
* Booster-pump systems
* Side-stream filtration
* Concept design
* Detailed design
* CAD drawing interpretation
* Mechanical specifications
* Equipment data sheets
* Construction documentation
* Third-party design review
* Supplier-drawing assessment
* Technical bid analysis
* Multidisciplinary coordination
* Design-comment management
* Procurement support
* Construction-design support
* Technical team leadership
* Project-management office delivery
Why Join Us
This opportunity offers senior technical responsibility within a new project-management office supporting major highway and infrastructure development in Riyadh. The varied mechanical scope provides challenging experience across tunnel ventilation, water systems, HVAC, procurement documentation, and multidisciplinary design assurance.
The position creates a strong route toward mechanical-design lead, engineering manager, and technical-director roles within Saudi Arabia\'s growing Mechanical or Industrial Engineering market.
About the Company
Parsons Corporation provides engineering, design-management, construction-supervision, and program-management services for complex transportation and infrastructure developments. Its multidisciplinary teams deliver coordinated technical solutions across the full project lifecycle.
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
The engineer will manage technically complex mechanical-design assignments from early concepts through construction-ready documentation.
* 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
The preferred candidate is a senior mechanical-design professional with substantial infrastructure experience and the ability to work effectively within a multidisciplinary project-management office.
* 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 systems
* HVAC design
* Plumbing systems
* Chilled-water systems
* Condenser-water systems
* Pipe-sizing calculations
* Pump-head calculations
* Booster-pump systems
* Side-stream filtration
* Concept design
* Detailed design
* CAD drawing interpretation
* Mechanical specifications
* Equipment data sheets
* Construction documentation
* Third-party design review
* Supplier-drawing assessment
* Technical bid analysis
* Multidisciplinary coordination
* Design-comment management
* Procurement support
* Construction-design support
* Technical team leadership
* Project-management office delivery
Why Join Us
This opportunity offers senior technical responsibility within a new project-management office supporting major highway and infrastructure development in Riyadh. The varied mechanical scope provides challenging experience across tunnel ventilation, water systems, HVAC, procurement documentation, and multidisciplinary design assurance.
The position creates a strong route toward mechanical-design lead, engineering manager, and technical-director roles within Saudi Arabia\'s growing Mechanical or Industrial Engineering market.
About the Company
Parsons Corporation provides engineering, design-management, construction-supervision, and program-management services for complex transportation and infrastructure developments. Its multidisciplinary teams deliver coordinated technical solutions across the full project lifecycle.
