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ASSYSTEM Logo ASSYSTEM · Consulting

Principal Ecologist

United Kingdom, London · Job Posted April 27, 2026
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Job Description

Are you ready to lead at a strategic level and shape the ecological direction of major infrastructure and development projects? At Assystem UK, you will step into a senior leadership role within our Ecology Consultancy team, influencing projects from early planning through to construction and operation while driving the growth and performance of the ecology practice itself.

Job Responsibility

  • Lead, mentor and manage a team of ecologists across senior, mid-level and junior grades
  • Align team resourcing with project demands, managing workloads and supporting recruitment where needed
  • Promote best practice in ecology, health and safety, quality assurance and legislative compliance
  • Drive continuous improvement and technical excellence across the ecology practice
  • Oversee ecological delivery across housing, infrastructure, renewables and energy projects
  • Provide strategic ecological direction through planning, consenting and construction phases
  • Lead and quality assure surveys, assessments, mitigation strategies and technical reports
  • Provide high-level technical review of EIAs, HRAs, mitigation strategies and Biodiversity Net Gain assessments
  • Oversee construction-phase compliance with wildlife legislation, licence conditions and mitigation commitments
  • Lead protected species mitigation strategies and EPS licence preparation and delivery
  • Investigate ecological incidents and implement proactive portfolio-wide risk management measures
  • Develop and implement growth plans aligned with wider business objectives
  • Lead or support tenders, fee proposals, client presentations and framework bids
  • Monitor project profitability, resource forecasts and overall performance of the ecology portfolio
  • Ensure robust QA processes and effective risk management systems are embedded across projects
  • Act as a senior point of contact for clients, regulators, collaborators and partners
  • Build and maintain strong professional networks to support business development
  • Represent the ecology discipline internally and externally at industry events and forums
  • Provide confident leadership within multidisciplinary coordination and client environments

Requirements

  • Degree in Ecology, Environmental Science or a related discipline
  • significant experience in applied ecological consultancy and leadership of complex infrastructure projects
  • Two European Protected Species licences
  • Strong knowledge of UK wildlife legislation, planning policy and best practice including EIA, HRA and BNG
  • Extensive experience managing teams, budgets and multidisciplinary project delivery
  • Membership of the Chartered Institute of Ecology and Environmental Management, with Full Membership required if not already held
  • Proven ability to deliver strategic, proportionate ecological solutions within complex live environments
  • Excellent report writing, review and quality assurance capability
  • Strong commercial awareness, business planning insight and client engagement skills
  • A full UK driving licence and willingness to travel to project sites

Nice to have

  • A Full or Chartered member of the Chartered Institute of Ecology and Environmental Management
  • Highly experienced in Ecological Clerk of Works duties and construction-phase leadership on major infrastructure schemes
  • Experienced in Biodiversity Net Gain strategy and planning tools such as UKHab
  • An established line manager and mentor within consultancy environments
  • Hands-on experience delivering protected species mitigation
  • Involvement in large-scale infrastructure schemes, such as Nationally Significant Infrastructure Projects
  • Working knowledge of digital ecology tools, including GIS platforms and the Biodiversity Net Gain Metric

What we offer

  • Hybrid and flexible working arrangements
  • Clear career progression pathways
  • Dedicated training budgets
  • Ongoing professional development support
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