Principal Consultant - Ecology

About Haskoning

At Haskoning, you will join an independent, employee‑owned international consultancy that combines engineering, design, and consultancy services with software and technology. Our mission, “Enhancing Society Together,” drives us to create a positive impact on the world.

We offer purpose‑driven and challenging work in diverse international projects, leveraging our 140+ years of expertise. With over 6,800 employees in more than 25 countries, we work together to turn challenges into opportunities and make a real impact on society.

As Principal Ecologist, you will lead the delivery of complex terrestrial ecology projects and provide technical leadership across a broad portfolio of work. You will oversee and deliver protected species surveys and wider ecological assessments, supporting projects from early feasibility and bid stages through to planning, construction and post‑consent delivery.

You will act as a technical lead and mentor within the ecology team, ensuring high‑quality outputs and supporting the development of junior colleagues. You will provide expert ecological advice throughout all stages of the project lifecycle, including the preparation and review of Ecological Impact Assessments, Habitats Regulations Assessments, Protected Species and Habitat Mitigation Strategies, Ecological Management Plans, Biodiversity Net Gain Assessments, Protected Species Licence applications and Method Statements.

You will also support project management, client engagement and business development activities, helping to identify opportunities, prepare proposals and maintain strong client relationships. In addition, you will collaborate closely with multidisciplinary teams across major infrastructure, renewable energy and development projects, providing pragmatic and innovative solutions to ecological constraints while supporting sustainable project delivery.

You will have extensive ecological consultancy experience, typically with over 10 years of experience working across a range of development projects, including the design and management of ecological surveys, technical report writing and project delivery. You will hold a relevant degree in ecology, environmental science or a related discipline (equivalent non‑degree qualifications will also be considered). You are a proactive and dependable technical specialist with strong leadership, mentoring and client‑facing skills.

You are adaptable, commercially aware and motivated to contribute to the continued growth and development of the team.

You will have substantial experience in the preparation and review of Preliminary Ecological Appraisals, Ecological Impact Assessments, Protected Species and Habitat Mitigation Strategies, Ecological Management Plans, Habitats Regulations Assessments, Protected Species Licence applications and Biodiversity Net Gain Assessments.

• Experience undertaking and managing a variety of ecological surveys.
• Holds one or more Natural England protected species survey licences. Experience as a mitigation licence holder or named ecologist on mitigation licences would be advantageous.
• Full membership of CIEEM (CEcol or CEnv desirable).
• Experience in managing projects, budgets and client relationships.
• Experience mentoring and supporting junior team members.
• A willingness to travel occasionally and a valid UK driving licence.
• Excellent written and verbal communication, organisational, analytical and time management skills.
• Strong interpersonal and stakeholder management skills.

We offer a stimulating and collaborative environment where we put people first and where you are empowered to shape your career path. Our UK Terrestrial Ecology Practice places a strong emphasis on continued professional development, technical excellence and knowledge sharing. As an employee‑owned business, we invest in our staff through structured training, mentoring, opportunities to attend conferences/events, opportunities to become involved in company initiatives (including innovation and sustainability programmes) and in‑person Ecology Practice team‑building sessions.

As a Principal Ecologist, you will also have the…