{"id":3296925,"url":"https://alion.io/job/mariana-minerals-process-engineer-2","title":"Process Engineer","company":{"id":8004,"name":"Mariana Minerals","domain":"marianaminerals.com","url":"https://alion.io/company/marianaminerals","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":81,"open_postings":16,"ghost_share":0,"stale_share":0.75,"repost_share":0,"time_to_fill_p50_days":40,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Moab, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":63000,"max_usd":113000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":4343},"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-26T16:54:30Z","employer_posted_date":"2026-10-26","last_verified_at":"2026-11-03T03:22:04Z","board_verified":true,"closed_at":null,"days_open":7,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":7},"description":"About Mariana Minerals\nMariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.\nKey responsibilities\nProcess ownership - SX and EW\nAct as the engineering owner of the SX and EW circuits, including mixer-settlers, organic and electrolyte handling, tank house, cell house and associated utilities.\n\nMonitor daily plant performance (PLS grade and flow, extraction and stripping efficiency, phase continuity, entrainment, current efficiency, cathode quality) and act on deviations.\n\nDefine and maintain operating envelopes, control set points and alarm limits together with operations and control engineers.\n\nLead technical troubleshooting of process upsets such as crud formation, organic degradation, impurity build-up (Fe, Mn, Cl, NO₃), short circuits and poor cathode morphology.\n\nManage reagent strategy for extractant, diluent, smoothing agents and cobalt sulfate, including consumption tracking and supplier technical liaison.\n\nProduce daily, weekly and monthly process performance reports and metallurgical balances.\n\nProcess improvement\nIdentify, evaluate and lead improvement projects that increase recovery, throughput, current efficiency and cathode grade, or reduce energy, reagent and operating costs.\n\nUse data analysis, mass and energy balances, and process modeling to quantify opportunities and build business cases.\n\nPlan and run plant trials and test work with the laboratory, vendors and external partners, then implement and verify results.\n\nDrive root-cause analysis on recurring losses and production incidents, and track corrective actions to closure.\n\nSupport control-system optimization and the use of instrumentation and online analyzers.\n\nExpansion and capital projects\nProvide process input to studies for capacity expansion, debottlenecking and new circuits, from concept through feasibility and detailed design.\n\nDevelop and review process design criteria, PFDs, P&IDs, mass balances, equipment sizing and datasheets.\n\nRepresent operations in design reviews, HAZOP and constructability workshops so new assets are operable and maintainable.\n\nSupport pre-commissioning, commissioning and ramp-up of new or modified equipment.\n\nContribute to cost estimates, schedules and risk assessments for capital projects.\n\nSafety, standards and people\nApply process safety and management-of-change (MOC) practice to every process modification, with particular focus on fire risk in SX and acid mist in EW.\n\nWrite and update SOPs, process descriptions and training material for operators.\n\nCoach operators, metallurgists and junior engineers, and share knowledge across teams.\n\nSupport environmental compliance for effluents, emissions and organic losses.\n\nRequired qualifications\nThis role suits a hands-on hydrometallurgical/mechanical/chemical engineer who enjoys spending time in the plant, turning data into decisions, and seeing improvements through from idea to commissioning.\n\n2+ years of process engineering experience in commissioning of chemical factories, mechanical equipment knowledge or project/design upgrades.\n\nProven track record delivering process improvement projects with measurable results.\n\nOur culture is built on four principles:\nEveryone Gets Home Safe. We never put speed or cost ahead of people.\nExtreme Ownership. We take full responsibility for outcomes, relentlessly driving toward solutions.\nEngineer Out Requirements, then Automate. We simplify, optimize, and then automate for scale.\nShare Your Legos. We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.\nJoin us as we build the future of responsible mineral sourcing and supply!","description_format":"text","description_chars":3891,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Mining","Mining Tech","Non-ferrous Metals"],"lifecycle":[{"event":"open","at":"2026-10-26T22:10:50Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 15","filings_12m":15,"filings_prev_12m":2,"green_card_filings_12m":0,"median_offered_wage_usd":152500,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":6,"expected_fill_days":40,"reasons":["conf:1","stale_co","velocity","win:early","comp:junior"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/mariana-minerals-process-engineer-2","json_url":"https://alion.io/job/mariana-minerals-process-engineer-2.json","meta":{"generated_at":"2026-11-03T05:31:33Z","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":7574,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-04T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"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":8004},"rest":"https://alion.io/mcp/rest/get_company?id=8004"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmariana-minerals-process-engineer-2"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"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%2Fmariana-minerals-process-engineer-2"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"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%2Fmariana-minerals-process-engineer-2"},{"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/mariana-minerals-process-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmariana-minerals-process-engineer-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3296925}},{"tool":"search_jobs","arguments":{"company":"marianaminerals.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3296925},"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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