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Mott MacDonald • Barcelona, ES; Seville, SE, ES; Madrid, ES

Principal/Associate Civil Engineer

Employment type:  Full time
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Job Description

Location/s: Madrid, Seville, Barcelona
Recruiter contact: Maria Cervantes

Mott MacDonald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices.


We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance – we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.


Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee-owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued. Whatever your ambition, Mott MacDonald is where people come to be brilliant.

Overview of role

After recent framework successes, we have opportunities for Principal civil engineers (design engineers) within our multidisciplinary Water Division. As part of our team, you will be able to make a difference by:

  • Leading the design of major water supply infrastructure to ensure sustainable water security
  • Contributing to innovative grey and blue-green sewer solutions to reduce the amount of wastewater spills
  • Delivering cutting-edge wastewater treatment plants to improve water quality in our rivers and coastlines

Our clients include most UK water utility companies and many other governmental organisations and private companies in the UK and overseas. We cover all phases of the project lifecycle from feasibility studies through detailed design, construction support, and commissioning to handover. This offers fantastic opportunities to get involved in diverse and technically challenging work and support professional development.

Key responsibilities and duties include:

  • Be responsible for the delivery of project(s), coordinating project team(s) to ensure excellent technical delivery within budget and programme
  • Produce and review engineering calculations, specifications, drawings and reports, proactively managing design risk to deliver constructable solutions
  • Represent the company in meetings, building strong relationships with our clients that will enhance our reputation and help secure further work
  • Deliver projects in close partnership with clients and contractors
  • Contribute to technical excellence and commercial success through forecasting and risk management, and the production of bids and proposals
  • Work to Mott MacDonald’s global standards and review Health, Safety and Welfare alongside environmental impact

Candidate specification

We are looking for a driven individual, with a strong technical background in water and the desire to contribute to projects which improve society and transform our clients’ businesses and our communities.

Essential:

  • Chartered Status (CEng) with a recognised Professional Institution
  • Proven ability to deliver complex technical projects, ensuring compliance with relevant quality assurance and technical standards and supporting the development of less experienced staff
  • Demonstrable technical experience in design and the management of design teams
  • Strong communication skills with experience in effective collaboration across internal multi-disciplinary teams with other technical disciplines including environmental specialists, geotechnical, structural, electrical and mechanical engineers
  • Good understanding of designers’ responsibilities under CDM

Desirable:

  • Able to travel to other offices and sites, as required
  • Track record in building teams and capability of junior staff
  • Experience in preparing successfully bids and in undertaking client engagement

We are actively recruiting a diverse workforce that is reflective of the communities we serve. We recognise that differences in ability, skills and experience are a strength and encourage applications from people of all backgrounds.

Equality, diversity, and inclusion

We put equality, diversity, and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they can contribute.

Accessibility

We want you to perform your best at every stage in the recruitment process. If you are disabled or need any support to enable you to apply or attend an interview, please contact us at reasonable.adjustments@mottmac.com and we will talk to you about how we can support you.

Agile working

At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team, and personal commitments. We offer a hybrid working policy that embraces your well-being, flexibility, and trust.

We offer some fantastic benefits including:

  • Competitive annual leave
  • Pension scheme
  • Life insurance
  • An annual professional institution subscription
  • Private medical insurance
  • Optional benefits via salary sacrifice (restaurant voucher/transport card/day care voucher)
  • Continuous development opportunities – because we want you to thrive
  • Agile/flexible working – because life isn’t 9-5
  • Annual bonus scheme
  • Wellbeing support including access to an independent Employer Assistance Scheme, wellbeing champions and access to learning and support resources
  • Access to our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability and parents/carers communities
  • The opportunity to make a difference; learn more about our social outcomes

Apply now, or for more information about our application process, click here.

#LI-MC1

Apply now

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
Compassionate leave
Critical Illness Insurance
Cycle to work scheme
Dental coverage
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
Eye Care Support – Eyecare vouchers
Faith rooms
Fully stocked snack cupboard
Further education support
Health assessment
In house training
Income protection
L&D budget
Learning platform
Life assurance
Life insurance – 4 x salary
Lunch and learns
Meditation space
Meditation space
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
Menopause support

Working at Mott MacDonald

Company employees:

18,000 worldwide

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

0:35:65

Hiring in countries

Australia

Bulgaria

Canada

Czechia

Germany

Hong Kong

India

Ireland

Italy

Japan

Malaysia

Netherlands

New Zealand

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

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