Overview

Tetra Tech is a leading provider of consulting and engineering services worldwide. It supports government and commercial clients with innovative solutions focused on international development, climate mitigation and adaptation, environmental sustainability, biodiversity, conservation, land reform, infrastructure, urban development, transport, water, and resource management. With 30,000 associates worldwide in over 120 countries, Tetra Tech’s capabilities span the entire project cycle.

Tetra Tech International Development Europe is Tetra Tech’s European business unit focused on International Development. We are based in London with offices in Kenya, Nigeria, Poland, and the Netherlands. We deliver international development programmes focused on economic growth, governance and justice/security, and infrastructure, for clients such as the UK’s Foreign, Commonwealth and Development Office (FCDO), the United Nations, the European Union, the European Investment Bank and other donors and funding agencies. We also have a strong in-house Monitoring, Evaluation, Research and Learning Practice consisting of 35 evaluators, statisticians, economists, social scientists, and research managers.

Our Values:

We are committed to maintaining business practices that honour and protect the dignity and integrity of everyone with whom the company conducts business, employs, and serves. As a leading international development organisation, we fully support continued progress and improvement within the development community to make development initiatives more effective. We are also committed to addressing various cross-cutting issues relevant to international development to ensure that all people can access and enjoy the benefits of our activities.

• We value our people: we support the development of our people, ensuring that the environments in which they work are fair, safe, and flexible.
• We deliver quality results: we go the extra mile to deliver value for our clients, impact for beneficiaries and a fair financial return for the company to grow sustainably.
• We collaborate effectively: we work authentically with our clients, beneficiaries and partners and strive to always communicate clearly and openly.
• We encourage creativity and innovation: we encourage entrepreneurial thinking and provide the freedom, support and investment for new ideas and initiatives.
• We operate with integrity: We will do the right thing, be honest and keep to our commitments.

Location: London, Stable Street (Coal Drops Yard, near King\'s Cross Station)

Flexible working available: We operate a hybrid working policy, with people working from the office two days a week and the rest working from home. People may choose to come in more often.

Contract Type: Permanent, Full Time

Working Hours: Monday to Friday, 37.50 hours per week, with occasional travel to project country locations

Salary & Benefits: Competitive Salary & Benefits

Job Overview

Are you an experienced development leader with a passion for driving inclusive economic growth and infrastructure transformation? Are you ready to take a leading role in shaping and delivering large-scale, complex international development programmes that sustainably transform economies and communities? Do you want to be instrumental in the strategic growth and diversification of a dynamic practice?

As a Principal with Tetra Tech International Development, you will work closely with the Practice Director and fellow Principals to lead and manage high-value programmes, oversee multidisciplinary teams, and play a pivotal role in expanding our portfolio through strategic business development. This senior UK-based role offers flexible hybrid working with at least two days per week in our London office.

About Us

At Tetra Tech International Development, our Economic Growth and Infrastructure practice is transforming lives and communities worldwide. We apply market-driven solutions and technical expertise to help countries unlock their economic potential, build resilient workforces, and develop sustainable and resilient infrastructure. We partner with leading clients such as the UK Foreign, Commonwealth & Development Office (FCDO), European Investment Bank, and KfW Development Bank to deliver inclusive and resilient programmes that shape the future of developing economies. Examples include our delivery of FCDO’s £50m Land Facility and the £40m Nigeria Infrastructure Advisory Facility. Learn more about Tetra Tech International Development Europe.

What You’ll Do:

• Lead the successful delivery of large, complex development programmes, ensuring high standards of quality, milestones, budgets, and client satisfaction.
• Drive strategic business growth by identifying and pursuing new opportunities, leading end-to-end tender processes, supporting teams, crafting proposals, and managing partner relationships.
• Provide strong leadership and mentorship to multidisciplinary in-house and in-country teams, fostering a culture of excellence and continuous professional development.
• Serve as a trusted technical resource and thought leader, delivering strategic advice on inclusive economic growth, business environment reform, climate and nature, land and forests, energy, and infrastructure.
• Build and sustain influential relationships with clients, partners, consultants, and internal stakeholders to ensure programme success and drive business expansion.
• Collaborate with fellow Principals and the Practice Director to shape and execute practice-level strategy, supporting the wider senior leadership team.
• Oversee rigorous financial and commercial management of programmes, including detailed financial reporting and proactive risk mitigation.
• Represent Tetra Tech at high-profile external forums to enhance reputation and thought leadership.
• Travel internationally to programme sites and Tetra Tech offices as required.

Who You Are:

• A highly experienced international development professional with a demonstrated record of directing complex programmes in inclusive economic growth, infrastructure, energy, climate and nature, or related sectors. Prior experience leading FCDO-funded programmes is advantageous.
• Proactive and entrepreneurial, with a business growth mindset and proven success in pipeline growth, pursuit strategy, and securing major contracts, particularly with FCDO and/or similar donors. Exceptional proposal writing skills are essential.
• Technically adept with deep knowledge of inclusive economic growth, business environment reform, climate and nature, land and forests, energy, and sustainable infrastructure in developing country contexts.
• Well-networked with extensive established contacts among clients, partners, and thematic experts aligned with our geographic and sectoral focus.
• A confident leader and manager skilled in mentoring and managing multidisciplinary, geographically dispersed teams.
• Commercially savvy, with a thorough understanding of financial management at both programme and corporate levels.
• An exceptional communicator in English, adept at working across cultures; proficiency in additional languages is a plus.
• Willing and able to travel internationally, including to fragile and conflict-affected contexts.

Qualifications:

Master\'s degree (or equivalent) in international development, economics, agriculture, engineering, climate and sustainability, or related disciplines.

Why Join Us:

• Join a diverse team committed to delivering lasting change.
• Thrive in an inclusive environment that values senior leadership and collaboration with the Practice Director and leadership team.
• Flexible hybrid working and opportunities for international travel.
• Be part of a global firm with extensive reach and expertise in water, environment, and infrastructure.

If you’re ready to drive meaningful change at scale, we want to hear from you!

The closing date for applications is 26 October 2025.

Applicants must already have the legal right to work in the UK; we are not able to provide visa sponsorship for this position.

Equality, Diversity, and Inclusion: Tetra Tech prides itself on workplace culture that advances equality, diversity, and inclusion and ensures the workplace is free from discrimination and harassment.

Disability Confident Employer: We have self-identified as a Disability Confident participant.

Request An Accessible Format: If you use assistive technology and need an accessible version, contact the UK Human Resources team.

Safeguarding: Tetra Tech International Development has safeguarding policies and guidelines to ensure gender equality and positive livelihoods for marginalised groups.

Region: United Kingdom and Europe; Role Category: Headquarters Positions or Project Opportunities

Additional Information:

• Organization: 781 CUE