Assystem is a global engineering and digital services company that plays a key role in large infrastructure projects, especially those related to complex, highly regulated industries. In the infrastructure sector, Assystem works across various domains to support the design, construction, operation, and maintenance of critical infrastructure.
As global challenges related to climate change, biodiversity loss, and sustainable development intensify, the role of ecological expertise has never been more critical. Our growing ecology practice is at the forefront of delivering practical solutions that promote environmental resilience, biodiversity conservation, and responsible land use.
We support a wide range of projects—from infrastructure development and renewable energy to habitat restoration and environmental planning—by integrating ecological principles into every phase of design and decision-making. Our team of ecologists work closely with clients, communities, and stakeholders to ensure that development and conservation go hand in hand.
With a strong focus on innovation, regulatory compliance, and long-term ecological health, we are committed to advancing a more sustainable and nature-positive future.
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.
What You Will Be Doing:
Project Delivery and Technical Leadership
Team and Practice Leadership
Strategic and Commercial Contribution
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:
Desirable Experience It is advantageous if you have:
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.
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.

Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition. We see ourselves as an activist in the development of nuclear energy, convinced that it is an essential part of the fight against climate change.
8,000 switchers, spread in 13 countries in Europe, Asia, Africa and the Middle East are working every day to make the energy switch by accelerating the development of nuclear and renewable energies, power grids, clean hydrogen projects and low-carbon transport.
We design and supervise major projects through our engineering activities and accelerate our customers' digital transformation. We also develop new solutions to build faster and improve the performance of complex infrastructures.
59 years of experience have made Assystem a key partner of the world's largest industrial groups: CEA, EDF, ENEC, Enedis, Engie, Framatome, ITER, K.A. CARE, Naval Group, NICDC, Orano, RATP, Rolls Royce, Royal Commission, Sellafield, SNCF...
Assystem is ranked in the Top 3 companies in the nuclear energy sector.