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Mott MacDonald

Senior Civil Engineer

Location:  Sydney, AU
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 the world in more than 50 countries.
We are proud to be part of an ever-changing global industry, delivering transformative work that’s defining our future. It’s our people who power that performance. As an employee-owned business, we invest in creating a space for everyone to feel safe and valued and empowered with the right tools and support.


Whether you want to pursue excellence in your specialism or broaden your experience with flexible roles across our business, you’ll be connected to a community of global experts championing you to be your best. Join us and shape your story with Mott MacDonald, where everyone has the opportunity to be brilliant.

Your opportunity

As a Senior Civil Engineer – Drainage and Flooding with a Civil Engineering Degree involved in a range of small to large projects from planning to construction, for a range of private and public clients. In this role, you’ll work closely with our New South Wales water design team while being part of our national Australian Water team. You will also assist in business development opportunities under the direction our team leaders, including proposal preparation.

You’ll make an impact by applying and extending your drainage and flooding expertise across water infrastructure and development projects, including land subdivisions, buildings, roads, rail and broader civil, utility and master planning works. You will contribute throughout the project lifecycle, from early planning and options assessment through to detailed design, delivery and finalisation. Your responsibilities will include hydrologic and hydraulic modelling, flood risk assessment, stormwater drainage design, preparation of technical reports and design documentation, liaison with clients and authorities, and coordination with multidisciplinary project teams to achieve practical, compliant outcomes.

We offer an excellent opportunity to strengthen your technical and leadership capabilities through hands-on delivery of drainage, stormwater and flood risk management projects. As the business grows, you will have clear opportunities for career progression and to help develop our drainage and flooding capability. For those seeking a broader career path, the role can also include project management, business development, team leadership, mentoring and resource management responsibilities.

About you

You are an experienced civil engineer with a strong background in drainage, stormwater management and flood risk assessment. You will be looking to advance your career within a multidisciplinary team, delivering practical and technically robust solutions for public- and private-sector clients. You will bring sound engineering judgement, clear communication skills and experience working within the quality assurance and safety systems of a large consultancy. Key requirements for the role include:

  • A degree in civil engineering or a related discipline, with relevant professional experience in drainage, stormwater management and flood risk assessment.
  • Experience in hydrologic and hydraulic modelling, detailed flood studies and risk assessments for development and infrastructure projects, using software such as TUFLOW, RORB, WBNM, HEC‑RAS, DRAINS, 12d and GIS tools.
  • Experience preparing technical reports, calculations, specifications and design documentation.
  • Working knowledge of relevant Australian drainage and floodplain management legislation, standards, guidelines and industry best practice.
  • Demonstrated ability to collaborate with multidisciplinary project teams and manage budgets, schedules and quality requirements to support successful project delivery.
  • Strong communication and relationship-building skills, with experience engaging with clients, authorities and other stakeholders.
  • Experience in mentoring and supporting junior engineers and sharing technical knowledge across project teams.


Culture & Benefits

Mott MacDonald celebrates diversity and inclusion, offering a supportive work environment that values work-life balance, diversity, inclusion, and equity. We welcome diverse applicants, including First Nations People, people with disabilities, members of the LGBTQIA+ community, and people of all genders, neurodiversity, cultural backgrounds, age groups, and those with intersectional identities.

Our benefits package is designed to enhance your experience:

  • An agile work atmosphere that caters to your professional journey and life's special moments
  • A competitive salary complemented by Discretionary Group and Personal Performance Bonuses for eligible employees
  • Comprehensive coverage including life and salary continuance insurance, providing peace of mind during uncertain times
  • Opportunities to enhance your work-life balance through the option to purchase extra annual leave
  • Employee resource groups including the Inclusive Network for Women, Corporate Social Responsibility and more

Employee ownership

  • Our employee ownership model means no external investors, just us, creating a culture of shared success.
  • Our employees have a stake and a voice in our business, giving them a direct connection to our success through our personal and group performance bonuses.
  • As your career grows, so does your stake, recognising your long-term impact and contribution.
  • Your voice matters, with the opportunity to connect directly with senior leadership through formal channels to help shape our future.

You’ve got this!

We endorse a diverse and inclusive workplace, and look to provide suitable opportunities for employees including the opportunity for part time and job shared roles where possible. If you are interested in this role and looking for a part time permanent opportunity, please apply!

#LI-VB1

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Mott MacDonald

Principal/Senior Drainage Engineer

Adelaide, AU

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
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
Menopause 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
Mental health first aiders
Mental health support
Emergency leave

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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Mott MacDonald

Principal Civil Engineer

Sydney, AU

Mott MacDonald

Senior Drainage Engineer

$126,000 – $154,000 per annum

Vancouver | Calgary | Toronto

Mott MacDonald

Principal Civil Engineer

Brisbane | Sunshine Coast

Mott MacDonald

Principal Hydraulics Engineer

Auckland, New Zealand

Company employees:

18,000 worldwide

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

0:35:65

Hiring in countries

Australia

Bulgaria

Canada

Czechia

Germany

Hong Kong

Hungary

India

Indonesia

Ireland

Italy

Japan

Malaysia

New Zealand

Qatar

Saudi Arabia

Serbia

Singapore

South Korea

Spain

Taiwan

Thailand

United Arab Emirates

United Kingdom

United States

Office Locations