Location
Central London, with opportunities to work from Manchester, Leeds, Chorley, Cockermouth, or other UK locations considered for the right candidate.

Hours
Full Time - Hybrid working policy with a mix of home and office-based work. Some UK-wide travel and occasional work outside normal office hours may be required.

Salary
Competitive salary commensurate with experience.

About the Role
Are you ready to take the next step in your career and contribute to meaningful projects that improve quality of life? At Tetra Tech, you will join high-performing teams passionate about solving complex challenges in water, environment, infrastructure, resource management, energy, and international development. Ranked #1 in Water by Engineering News-Record for 20 consecutive years, Tetra Tech is one of the largest and fastest growing environmental consultancies globally.

We are expanding our flood risk team due to growth with existing clients and new project wins. As a Senior / Principal Engineer, you will support our Water Engineering team across the UK, ideally based in one of our key offices but with flexibility for the right candidate.

You will lead and deliver a wide variety of major infrastructure projects for private and public sectors, providing integrated flood risk and drainage solutions using state-of-the-art design. Our portfolio includes flood alleviation schemes for local authorities, MOD, and private clients, surface water separation schemes for water utilities, and natural flood risk management and Sustainable Urban Drainage solutions for housing developers.

As a project leader, you will guide teams, support clients, and contribute to business development activities. You will work independently on technical aspects from project inception through delivery and closeout, ensuring best practice and client satisfaction. Mentoring junior staff and collaborating with multidisciplinary teams will be key to your success. You will be supported by senior technical leadership and have access to comprehensive training, mentoring, and professional development opportunities.

Tetra Tech fosters a collaborative environment that values innovation, creativity, and individual performance, offering competitive compensation and benefits.

Experience
- Proven experience delivering and leading flood risk and/or surface water separation projects including solution development, optioneering, and design in line with relevant guidance.
- Experience writing technical reports and business cases, and presenting to internal and external stakeholders.
- Skilled in client engagement, leading design discussions, and working across multidisciplinary teams including hydraulic modellers, engineers, and environmental consultants.
- Knowledge or interest in Natural Flood Management solutions.
- Understanding and experience working with the National Planning Policy Framework (NPPF).
- Proficiency in IT systems such as ArcGIS, AutoCAD, Civils 3D, and Microsoft Office suite.

About You
- Enthusiastic professional who enjoys challenges and working in a busy, growing team.
- Strong interpersonal and communication skills with the ability to work independently and collaboratively.
- Committed to delivering projects on time and within budget while maintaining high standards.
- Dedicated to promoting good health and safety practices in the workplace and design.
- A team player with flexibility, versatility, and a positive attitude.
- Ability to mentor, encourage, and support junior team members.
- Desire to continue professional development and build upon existing experience.
- Hold a full UK Driving Licence.
- Security clearance to at least SC level is preferable or willingness to apply.

Qualifications
- Educated to degree level or equivalent in a relevant field.
- Chartered status with ICE or CIWEM, or actively working towards chartership.