{"id":3959833,"url":"https://alion.io/job/amentum-principal-hydrogeologist","title":"Principal Hydrogeologist","company":{"id":14861,"name":"Amentum","domain":"amentum.com","url":"https://alion.io/company/amentum","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":82,"open_postings":432,"ghost_share":0,"stale_share":0.931,"repost_share":0,"time_to_fill_p50_days":18,"computed_at":"2026-11-11T05:49:22Z"}},"role":"Science & Research","role_family":"Science & Research","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Didcot, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-05T00:00:00Z","employer_posted_date":"2026-11-05","last_verified_at":"2026-11-11T14:08:06Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and sustainability. If you're passionate about making a real impact and want to be part of a community that values ethical excellence, this is the place where your ambition can thrive.\nHere, we believe that success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for all.\nWe’ll inspire and empower you to deliver your best work so you can evolve, grow and succeed - today and into tomorrow. We offer an exciting range of opportunities to develop your career within a supportive team who always strive to do the right thing for our people, clients and communities.\nPeople are our greatest asset, and we offer a competitive package to retain and attract the best talent.\nIn addition to the benefits you’d expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships.\nWork-life balance and flexibility is a key focus area for us. We’re happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.\nAbout the Opportunity\nWe are looking for a Principal Hydrogeologist who will bridge the gap between complex data collection and practical engineering solutions for energy and environmental projects.\nWe operate under flexible working arrangements, with a mixture of office-based and home working environments. It is intended that the role will be in Harwell, Oxfordshire based, although alternative locations may be considered.\nYou will be working within a multidisciplinary team with specialities in low strength sedimentary rock, high strength rock and Quaternary geology, and in disciplines ranging from hydrogeology, land quality, geotechnical engineering, engineering geology and geophysics. Much of the work we undertake involves siting, site characterisation, site descriptive models and understanding subsurface conditions related to nuclear facilities. In addition, you will be encouraged to work with the wider Amentum community to further strengthen the team’s capabilities. You will also gain experience in complex bid preparation, project management and technical planning. As a result, we are looking for people who have the passion and drive to be involved with major radioactive waste management and nuclear decommissioning projects with strong adaptability, prioritisation and teamworking skills.\nWhilst much of our work is focussed on radioactive waste management and disposal, there will be opportunities to become involved in exciting projects that form part of Amentum wider portfolio of work, particularly across the Energy, Environment and Defence business. We would be interested in candidates with experience in carbon capture and storage (CCS) and geothermal energy, which could compliment future growth opportunities.\nThere are significant expectations over the next thirty years concerning the siting of facilities for new nuclear builds, the need for geological disposal of wastes, as well as continuing geoscience characterisation at existing licensed sites to support on-going operations. This role, within an expanding team, will support our strategic positioning in the energy and environment sector and support delivery of current and future projects.\nKey Responsibilities\nDeliver expert technical support and advise on a broad range of hydrogeological and geological services, across the UK and international projects.\nContribute to all stages of project delivery, from bid preparation through to delivery.\nPrepare and have oversight of technical reports relating to hydrogeology and wider geoscience/site investigation projects\nProvide expert advice on conceptual models and support with numerical hydrogeological modelling. The team currently has a strong numerical modelling capability for hydrogeology. The candidate will work alongside the modelling team to help deliver integrated solutions.\nDesign site investigations and provide technical oversight to contractors and field teams.\nHere's What You'll Need\nEducation: A degree in Geology, Environmental Science, Hydrogeology (MSc preferred).\nExperience in a commercial engineering or environmental environment.\nExcellent technical report writing and communication skills and proven experience undertaking groundwater assessment projects.\nA strong understanding of UK hydrogeology and regulatory framework for water management\nAbility to manage time and priorities while working on several varied projects.\nOur Culture\nOur values are built on a strong foundation of safety, integrity, and respect for every individual. People are at the heart of our mission, and we believe in supporting one another through a culture of care and collaboration.\nWe strive to create a workplace where everyone feels they belong and can thrive. Supporting mental wellbeing and fostering a sense of connection are essential to how we work.\nWhen we embrace different perspectives and work together, we become more innovative, more agile, and more successful.\nWe partner with VERCIDA, for greater online accessibility please visit www.vercida.com to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.\nIf you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team.","description_format":"text","description_chars":6060,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Growth opportunities","Parental leave","Professional development"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Military Logistics","Facilities Management","Business Process Outsourcing (BPO)","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-11-09T10:54:14Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Licensed UK visa sponsor (Skilled Worker, Senior or Specialist Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker; Global Business Mobility: Senior or Specialist Worker","cap_exempt":false,"checked_at":"2026-11-11T07:38:50+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":62,"band":"ok","label":"Likely open","p_open":1,"p_active":0.623,"p_room":1,"age_days":6,"expected_fill_days":18,"reasons":["conf:0","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-11-11T05:49:22Z"},"pay":null,"html_url":"https://alion.io/job/amentum-principal-hydrogeologist","json_url":"https://alion.io/job/amentum-principal-hydrogeologist.json","meta":{"generated_at":"2026-11-11T14:52:48Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":27556,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-12T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":14861},"rest":"https://alion.io/mcp/rest/get_company?id=14861"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Famentum-principal-hydrogeologist"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Famentum-principal-hydrogeologist"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Famentum-principal-hydrogeologist"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/amentum-principal-hydrogeologist\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Famentum-principal-hydrogeologist"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3959833}},{"tool":"search_jobs","arguments":{"company":"amentum.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3959833},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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