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Mott MacDonald

Principal Public Health Engineer

Location:  Riyadh, SA
Location flexibility:  3 office days / week
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Job Description

Mott MacDonald is a global engineering, management and development consultancy committed to delivering impactful work that shapes the future. We are a team of over 20,000 experts working across more than 50 countries. As an employee-owned business, we invest in creating an environment where everyone feels valued, supported and empowered to do their best work.

Whether you want to deepen your expertise or broaden your experience across different projects and disciplines, you’ll be connected to a global community of specialists and have opportunities to shape your career.

About the role

We are looking for a Principal Public Health Engineer to join our Buildings team in the Middle East.

You will take a leading role in the design and delivery of public health engineering solutions across multidisciplinary building and infrastructure projects. Working closely with clients, architects and engineering teams, you will provide technical leadership from early design through detailed design and construction support.

This is an opportunity to combine hands-on engineering expertise with technical assurance, client engagement and the development of engineers within the team.

Key responsibilities

As Principal Public Health Engineer, your responsibilities will include:

  • Lead the design and technical delivery of public health engineering systems across multidisciplinary projects.
  • Develop and review designs for fire protection systems including sprinkler, standpipes, foam, clean agent and specialised fire protection systems.
  • Develop and review designs for natural gas and LPG systems associated with buildings.
  • Undertake and review engineering calculations, system sizing, equipment selection, technical drawings, specifications, technical reports and design documentation.
  • Support engineering team in design, design coordination and modelling.
  • Shall be experienced in local authority regulations and design approvals.
  • Shall be experienced in using national and international codes and standards associated with the public health engineering.
  • Provide technical assurance and undertake design reviews to ensure outputs meet project requirements and relevant standards.
  • Lead the public health engineering input from concept and feasibility through detailed, tender and IFC designs, with construction support as required.
  • Coordinate public health systems with key disciplines including mechanical, electrical, structural, landscape, pool, interior design and architectural disciplines.
  • Identify design constraints, interfaces, risks and opportunities and develop practical engineering solutions.
  • Work closely with clients and project stakeholders, providing clear technical advice and representing the discipline at project and design meetings.
  • Support project managers with scope, programme, resource planning and delivery.
  • Review technical submissions and respond to technical queries during project delivery.
  • Provide guidance, mentoring and technical support to engineers and other members of the team.

Candidate specifications

We are looking for someone who can bring strong public health engineering capability together with the judgement and collaborative approach expected at Principal level.

Essential

  • Degree in mechanical engineering, building services engineering or a relevant engineering discipline.
  • Minimum experience of 12 years, local experience would be preferable.
  • Strong professional experience in public health engineering and building services design.
  • Demonstrable experience designing water supply, drainage and associated public health systems.
  • Demonstrable experience designing gas and fire protection systems.
  • Experience delivering designs through multiple stages of the project lifecycle.
  • Strong understanding of engineering calculations, specifications, drawings and technical documentation.
  • Ability to review engineering designs and provide effective technical assurance.
  • Experience working within multidisciplinary design teams.
  • Strong communication skills with the ability to explain technical matters clearly to clients, colleagues and project stakeholders.
  • Ability to organise and prioritise work across multiple project requirements.
  • Ability to guide and develop less experienced engineers.

Desirable

  • Chartered Engineer status, or progress towards an appropriate professional qualification.
  • Experience delivering major buildings or infrastructure programmes in the Middle East.
  • Experience across sectors such as healthcare, commercial, hospitality, residential, education, aviation, transport or major mixed-use developments.
  • Knowledge of regional authority requirements alongside relevant international standards and codes.
  • Experience of BIM-led and digitally integrated multidisciplinary design.
  • Experience supporting bids, proposals and client development activities.

Our benefits vary by country and are subject to eligibility and local policy. We’ll confirm the details relevant to you as part of the offer process.

  • Annual leave in line with local policy (competitive within the market).
  • Maternity leave above and beyond local provisions and paternity leave provisions where applicable
  • Professional membership/ institution subscription support
  • Medical insurance and life insurance as per local plan (standard and enhanced coverage may vary by country and policy).
  • Learning and career development through project variety, technical networks, and structured development opportunities.
  • An inclusive culture: we’re committed to equality, diversity and inclusion, and creating a workplace where everyone feels valued and supported.
  • Rewards and bonuses: we are owned by our people (no external investors) and through our employee ownership model success is shared through annual bonus opportunities and longer-term participation as your career grows (subject to local plan, eligibility and business performance)
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Mott MacDonald

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Working at Mott MacDonald

3 office days / week

A little flex time – We’re happy to talk flexible working and how we can support your responsibilities beyond the workplace. We offer a range of options depending on your role, so please discuss this with your recruiter.

Company benefits

Accrued annual leave
Adoption leave – 26 weeks full pay
Annual bonus
Annual pay rises
Bank holiday swaps
Bike parking
Book swaps
Buddy scheme
Buy or sell annual leave
Carer’s leave – up to 5 days, two of which are paid
Collaboration spaces
Compassionate leave
Critical Illness Insurance
Cycle to work scheme
Dental coverage
Emergency leave
Employee assistance programme
Employee discounts
Enhanced maternity leave – 26 weeks full pay
Enhanced paternity leave – 2 weeks
Enhanced pension match/contribution – matched up to 7%
Enhanced sick pay
Ergonomic workstations
Faith rooms
Fully stocked snack cupboard
Further education support
Health assessment
Health cash plan – to support with everyday health costs (eg dental / eye care)
In house training
Income protection
L&D budget
Learning platform
Life assurance
Life insurance – 4 x salary
Lunch and learns
Meditation space
Meditation space
Menopause support
Mental health first aiders
Mental health support
Mentoring
Modern office
On-site shower
On-site yoga classes
Open to part time work for some roles
Open to part-time employees
Pregnancy loss leave
Pregnancy support
Private booths
Private GP service – Private Medical care for all UK staff
Professional subscriptions – We pay for your primary professional annual subscription
Referral bonus
Religious celebration leave
Reservist leave – 10 days leave
Returnship
Salary sacrifice
Share options
Shared parental leave – We match up to 24 weeks full pay
Study support
Tax-free childcare
Teambuilding days
Theme park discounts
Travel loan
Women’s health leave
Women’s health support

Awards & Accreditations

Best Employee Wellbeing

Top 5 - Best Employee Wellbeing

Flexa awards 2026
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2026
2nd - Best Career Progression

2nd - Best Career Progression

Flexa awards 2025
3rd - Most Family Friendly Company

3rd - Most Family Friendly Company

Flexa awards 2025
Best Work-Life Balance

Top 5 - Best Work-Life Balance

Flexa awards 2025
Most Flexible Company

Top 5 - Most Flexible Company

Flexa awards 2025
Best Workplace Culture

Best Workplace Culture

Flexa awards 2025
Apply
  • Contribute to proposals, bids and technical inputs for new opportunities where required.
  • Support continuous improvement and digital ways of working, sharing technical knowledge and lessons learned.
  • Demonstrate safe, ethical and inclusive behaviours aligned with Mott MacDonald values.
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    Company employees:

    18,000 worldwide

    Gender diversity (m:f:n-b):

    0:35:65

    Hiring in countries

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