Associate Ecologist

Lead Ecological Growth and Shape Sustainable Development Across London and the South East

Tetra Tech is seeking to recruit an Associate Ecologist to join our Ecology team based in London. This is an exciting opportunity to play a leading role in the growth of our ecology business, supporting a diverse portfolio of residential-led regeneration, commercial development, infrastructure, aviation, data centre, logistics, urban greening and major transport projects across London and the South East.

Working alongside planners, environmental managers, landscape architects and engineers, you will help clients navigate planning requirements, Biodiversity Net Gain (BNG), protected species constraints and wider environmental considerations within one of the UK's most dynamic development markets. This role offers the opportunity to combine technical leadership, project delivery, client development and team management while contributing to some of the UK's most high‑profile projects.

As an Associate Ecologist, you will lead the delivery of complex ecological projects across a broad range of sectors, providing strategic ecological advice and ensuring the successful delivery of high-quality technical outputs. You will act as a Project Director or Technical Lead on key commissions, overseeing project teams, managing client relationships and driving commercial performance.

You will play a key role in developing and maintaining client accounts, identifying opportunities for growth and supporting business development activities. Working closely with multidisciplinary teams, you will contribute to integrated environmental solutions that support sustainable development while achieving client objectives.

Alongside project responsibilities, you will mentor and develop ecologists across all career stages, contributing to technical excellence, knowledge sharing and the continued growth of the regional ecology team. This position offers a significant opportunity to influence strategy, shape service delivery and support the long‑term success of the London ecology business.

Your expertise will directly influence the successful delivery of major development, infrastructure and environmental projects, helping clients manage ecological risks, meet planning requirements and achieve positive biodiversity outcomes. Through your technical leadership and commercial awareness, you will contribute to both project success and the continued growth of the ecology team.

In the short term, you will establish strong relationships with existing clients and stakeholders, successfully deliver a portfolio of ecology projects and contribute to regional utilisation and financial performance. As your influence grows, you will expand client relationships, secure repeat business opportunities and support improvements in team capability, efficiency and project delivery.

Over the longer term, you will help shape the strategic direction of the London ecology business, establish yourself as a recognised technical leader and contribute to the successful delivery of nationally significant infrastructure, development and renewable energy projects.

• You will bring significant experience within ecological consultancy and a strong technical background in Ecological Impact Assessment (EcIA), Biodiversity Net Gain (BNG), Habitat Regulations Assessment (HRA), protected species surveys and mitigation, and quality assurance processes. You will be comfortable providing technical leadership, undertaking complex reviews and ensuring the delivery of robust, high-quality ecological advice.

• You will demonstrate a proven ability to manage complex and profitable projects, balancing programme delivery, budget management, forecasting, contract administration and commercial risk. You will have experience leading multidisciplinary project teams and ensuring projects are delivered to agreed quality, financial and programme objectives.

• You will be an accomplished relationship builder with experience developing client accounts, identifying growth opportunities and contributing to work‑winning activities. You will bring a commercial mindset and the confidence to represent the business externally, support strategic growth initiatives and help secure new opportunities across the London and South East market.

• You will be passionate about developing people and fostering a collaborative culture. You will provide mentoring, coaching and technical guidance to ecologists at all levels, supporting career progression while promoting high standards of performance, inclusion and professional development.

• You will work effectively across multidisciplinary teams, contributing to regional business planning objectives, driving continuous…