Senior Ecologist

ASSYSTEM; Greater London, Essex; On-site; GBP 55,000 - 75,000; Full time

Job summary

Assystem UK is seeking a senior ecologist to lead projects, mentor teams and shape best practice across major infrastructure and development schemes in the UK.

You will be embedded in live project environments, delivering technical leadership, managing ecological risks and supporting the growth of a high-performing ecology practice while aligning with programme and commercial objectives. This is a full-time, site-based role split between Essex and occasional Central London visits.

Qualifications

• A degree in Ecology, Environmental Science or related discipline.
• Strong knowledge of UK wildlife legislation and policy (EIA, HRA, BNG).
• Experience leading multidisciplinary projects and teams.

Responsibilities

• Lead ecological surveys and assessments, including habitat appraisals and protected species surveys.
• Oversee ecological input into housing, infrastructure, renewables and energy projects.
• Prepare high-quality technical reports (EIAs, HRAs) and mitigation strategies.
• Monitor construction activities for wildlife compliance and risk management.

Skills

Ecology knowledge

Team leadership

Commercial awareness

Report writing

Driving licence / travel

Education

Degree in Ecology or Environmental Science

Job description

Assystem is an international company with one mission: accelerate the energy transition around the world.

Every day, our 8,000+ switchers located in 14 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy. We are a collective committed to making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.

Here is how you can be a part of that switch:

Job Description

Are you an experienced ecologist ready to lead projects, shape best practice and support the growth of a high-performing team? At Assystem UK, you will take on a senior, client-facing role that combines technical delivery with team leadership and commercial awareness across major infrastructure and development schemes in the UK.

The Role

You will be embedded within live project environments, supporting planning, consenting, construction and operational phases. Acting as the ecological focal point within multidisciplinary teams, you will ensure ecological risks are managed pragmatically while maintaining programme and commercial objectives.

Alongside leading complex projects, you will play a key role in strengthening and developing the ecology practice. You will mentor colleagues, support resource planning and contribute to strategic growth, helping to position ecology as a trusted and commercially successful discipline within the wider business.

This is a full-time, site-based position, with the location split being Essex, with occasional office visits to our Central London HQ.

What You Will Be Doing:

Project Delivery and Technical Leadership

• Lead ecological surveys and assessments, including habitat appraisals, protected species surveys and impact evaluations
• Oversee ecological input into housing, infrastructure, renewables and energy projects
• Prepare and review high-quality technical reports, including EIAs, HRAs, mitigation strategies and Biodiversity Net Gain assessments
• Monitor construction activities to ensure compliance with wildlife legislation and licence conditions
• Support and lead protected species mitigation strategies and EPS licence applications
• Investigate ecological incidents and implement proactive risk management measures
• Deliver ecological briefings and provide clear, practical advice to site teams and project managers

Team and Practice Leadership

• Lead, mentor and support ecologists at senior, mid-level and junior grades
• Align team resourcing with project demands, managing workloads and supporting recruitment where required
• Champion best practice in ecology, health and safety, quality assurance and legislative compliance
• Contribute to the continuous improvement of technical standards and delivery processes

Strategic and Commercial Contribution

• Support work-winning activities including tenders, fee proposals, client presentations and framework bids
• Monitor project budgets, programme delivery and resource forecasts
• Contribute to practice growth plans aligned with wider business objectives
• Build strong relationships with clients, regulators and collaborators, acting as a trusted senior contact

What You Will Bring

A degree in Ecology, Environmental Science or a related discipline, supported by significant experience in applied ecological consultancy. You will also bring:

• Strong knowledge of UK wildlife legislation, planning policy and best practice including EIA, HRA and BNG
• Experience managing teams, budgets and multidisciplinary project delivery
• Membership of the Chartered Institute of Ecology and Environmental Management, with Full Membership to be obtained if not already held
• Excellent commercial awareness, business planning insight and client engagement skills
• Strong report writing, communication and leadership capabilities
• A full UK driving licence and willingness to travel to project sites

Desirable Experience It is advantageous if you have:

• Extensive Ecological Clerk of Works experience on infrastructure or construction sites
• Experience in Biodiversity Net Gain assessment and UKHab habitat classification
• A strong professional network within the ecology and infrastructure sectors

If you are ready to combine hands-on technical delivery with leadership, commercial influence and team development, this is your opportunity to make a measurable impact within a growing ecology practice.

Additional Information

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.