Senior Process Engineer - Waste Thermal Treatment

SLR’s mission is to make sustainability happen. This requires technical solutions covering a wide range of areas – energy from waste, thermal process, carbon capture and hydrogen, to mention just a few. Interest in these and other technical solutions is growing, and our Process Engineering team is expanding. We are seeking an experienced engineer and project manager to support the origination, development and due diligence of Energy from Waste, thermal processing and carbon capture projects.You’ll join an established, high‑performing team with deep expertise in the Energy from Waste (EfW) and thermal processing industries, contributing to a wide range of innovative, technically challenging and commercially impactful projects. You’ll work both independently and collaboratively, managing projects, supporting business development, mentoring colleagues and helping grow our team’s capability.Based in the UK (location flexible), the role will focus primarily on EfW, thermal processing and carbon capture project origination, development, due diligence and technical delivery, with additional exposure to biomethane, AD, sustainable fuels, wastewater, recycling and circular economy projects across the UK and internationally.The RoleYou’ll lead and support the delivery of EfW, thermal processing and carbon capture projects from concept through to commissioning, working closely with clients, contractors and multidisciplinary teams. The role includes:Originating and managing energy from waste, thermal processing and carbon capture projects across the full project lifecyclePreparing concept designs, feasibility studies and technical assessmentsReviewing third‑party designs, proposals and operational models, and preparing technical due diligence reports for fundersPreparing technical and procurement documentation, schematics and drawings, and supporting contract management during constructionAssisting with modelling to determine plant energy and mass balances, emissions, thermodynamic calculations and basic financial metricsConducting site inspections, witnessing, verification and supervision during construction, commissioning and testingTroubleshooting operational plant, including thermal, mechanical and biological waste and recycling operationsDeveloping client relationships, attending conferences, preparing proposals and winning new workSupporting other SLR teams with technical and process engineering expertise across diverse sustainability‑focused projectsYou’ll collaborate with colleagues across Process Engineering, Advisory, Environmental Management & Compliance, Land & Water, and Environmental Specialist Services, with opportunities to work on complex, high‑impact projects in the UK and overseas, and the role will involve travel to client sites across these regions as required.Rewards & BenefitsSLR’s ‘One Team’ culture is at the heart of our business, providing a collaborative and supportive environment for professional development. Through a structured career framework, regular performance reviews, and full support toward chartership, professional qualifications and licences, we offer outstanding opportunities for long‑term career progression.Our flexible benefits & rewards package includes:Competitive salary with discretionary bonusCompany pensionPrivate medical insuranceLife, income and travel insuranceCritical illness coverSalary sacrifice car lease and cycle‑to‑work schemesVolunteering and Community GivingWe believe sustainable careers need balance, that’s why we offer:Flexible, hybrid and agile working25 days’ annual leave plus flexible public holidaysBuy or sell leave optionsCore working hoursCross‑border remote working and sabbatical opportunitiesFamily life and wellbeing matter at SLR:We provide enhanced maternity, paternity and adoption leave, access to an Employee Assistance Programme, and specialist support for mental health, stress and menopause — supporting our people both professionally and personally.About YouYou’ll bring:A degree in Engineering, or a related disciplineExperience in Energy from Waste, thermal processing and carbon capture sectorsExperience managing technical projects, ideally including construction, operations or consultancy rolesStrong numeracy and confidence with data, modelling and analysisExcellent report writing skills and proficiency with Excel, Word and PowerPointThe ability to work independently and collaboratively within a multidisciplinary teamStrong communication skills, with a friendly, logical and organised approachA full, driving licence valid in the UKDesirable:A relevant Master’s degreeChartered Engineer status (or working toward it)Experience with due diligence, operations, contract management or procurementExperience working on site, including H&S and CDM RegulationsA commitment to advancing sustainability and environmental performanceCulture & InclusionInclusion is fundamental to who we are. We are committed to equal opportunities and foster a workplace where everyone can thrive, supported by active Culture & Inclusion Committees and Employee Networks. We welcome applications from candidates of all backgrounds and are a Disability Confident Committed employer. If you require any adjustments during the recruitment process, please let us know and we will be happy to support you.If this Senior Process Engineer - Waste Treatment role feels like a great fit for your experience and ambitions, we’d love to hear from you.SummaryLocation: London, UKType: Full time