Jobs at Mariana Minerals

Designs and leads mining and refining process improvement and capital projects from concept through commissioning. Responsibilities include developing PFDs and P&IDs, sizing process equipment, analyzing plant data, coordinating mechanics, electricians, controls teams, vendors, and contractors, and managing project scope, schedule, budget, safety reviews, and operational handover.

Commercial Counsel managing M&A, joint ventures, strategic partnerships, and commercial transactions for a minerals company. Responsibilities include due diligence, drafting and negotiating purchase, supply, offtake, royalty, procurement, and JV agreements; coordinating regulatory approvals and financings; managing outside counsel; and building scalable legal processes. The role partners with corporate development, operations, engineering, and project teams in a fast-paced environment.

Provide hands-on intellectual property counsel across patents, trade secrets, trademarks, copyrights, domains, open source, and commercial transactions. Develop IP strategy, manage patent portfolios and outside counsel, establish trade secret protections, negotiate technology-related agreements, conduct IP due diligence, and support cross-functional teams. Build the company’s IP infrastructure, policies, processes, and relationships while providing practical legal guidance in a fast-paced startup environment.

Own process design bases and execute detailed engineering deliverables, including PFDs, heat and material balances, P&IDs, hydraulic models, equipment specifications, control narratives, and procurement packages. Coordinate with multidisciplinary engineering teams, support HAZOPs and PHAs, and resolve field issues through construction, commissioning, startup, and as-built closeout. The role requires extensive industrial process-facility design experience, preferably involving minerals processing, slurry handling, and database-driven P&ID platforms.

Develop sourcing strategies for highly technical roles, identify and engage passive candidates, conduct talent mapping and market research, partner with engineering leaders, build specialized candidate pipelines, track sourcing metrics, improve recruiting processes, and strengthen the employer brand and candidate experience.

Analyzes logistics requirements, freight markets, carrier options, routes, costs, lead times, and external supply-chain conditions. Builds logistics cost models, supports procurement negotiations, monitors freight spend and performance, identifies savings opportunities, and advises engineering, procurement, and operations teams. The role also contributes to logistics planning for site startups and communicates market constraints and risks to internal stakeholders.

Leads Mariana Minerals’ logistics function across operating sites and capital projects. Develops freight strategy, manages logistics staff and senior 3PL, carrier, and freight-forwarder relationships, oversees multimodal domestic and international shipments, ensures customs and Incoterms compliance, controls freight spend, and drives reporting and process improvements. Evaluates infrastructure investments and provides logistics expertise to procurement, engineering, capital projects, and site operations. Regular travel to operating and project sites is required.

Coordinates mineral processing and refinery engineering projects across multiple disciplines from concept through construction support. Responsibilities include managing schedules, budgets, documentation, document control, contractor activities, project costs, milestones, progress reporting, and schedule risks. The role also improves coordination processes and contributes to internal software tools. Requires cross-functional collaboration, project tracking, and delivery of engineering packages under schedule constraints.

Own integrated Level 1–4 EPC schedules for capital projects across engineering, procurement, construction, commissioning, and startup. Responsibilities include critical path analysis, baseline and change control, contractor schedule reviews, progress measurement, look-ahead planning, schedule risk analysis, delay analysis, executive reporting, and automation of schedule status and reporting processes. The role requires strong Primavera P6 expertise, field credibility, data fluency, and experience managing owner-side EPC schedules.

Lead technical sourcing for engineering and automation teams by developing targeted searches, engaging passive candidates, conducting talent mapping and market research, partnering with recruiters and hiring managers, improving sourcing methodologies and tooling, and tracking metrics to build long-term candidate relationships and pipelines.

Lead mechanical engineering for mineral refining facilities from concept through commissioning. Responsibilities include equipment design, plant layouts, static equipment calculations, FEA, solids-handling systems, vendor management, multidisciplinary EPC coordination, and construction and startup support. The role requires hands-on delivery of greenfield and brownfield projects involving tanks, vessels, silos, conveyors, kilns, and other industrial processing equipment.

Leads and develops a software engineering team building MarianaOS, an operational platform for mining and mineral processing. Responsibilities include hiring, performance management, career development, delivery planning, roadmap execution, technical collaboration, process improvement, and stakeholder communication. The manager remains technically engaged, uses engineering metrics to improve team performance, removes blockers, and helps the team ship reliable software quickly in partnership with engineering, construction, product, and operations teams.

Build and maintain onboard and platform software for autonomous mining vehicles, including sensor drivers, data pipelines, synchronization, calibration, deployment, monitoring, simulation, testing, drive-by-wire integration, low-level controls, and safety systems. Collaborate with machine learning, hardware, controls, and mine operations teams through field validation on real equipment.

Own Mariana Minerals’ infrastructure platform across AWS, EKS, on-premises, and edge clusters. Build self-service infrastructure, GitOps delivery, observability, identity and secrets management, cost controls, and reliable ML/data workloads. Lead cluster operations, incident response, upgrades, and automation that enables engineers to provision and operate services independently.

Own applied statistical analysis for mineral processing operations, including experimental design, metric definitions, uncertainty quantification, process control, forecasting, reporting, and dashboards. Analyze messy sensor, assay, laboratory, and plant data to support production, cost, supplier, and capacity decisions. Partner with data platform teams, improve analytical rigor across the company, and communicate findings clearly to operators, engineers, and executives.

Own the product strategy, roadmap, prioritization, and production readiness for Mariana Minerals’ ML platform, simulators, perception systems, and industrial robotics initiatives. Translate operator and engineering needs into specifications, KPIs, and shippable work; align stakeholders across applied AI/ML, software engineering, and plant operations; and define trusted deployment standards for models, simulators, and robots supporting autonomous chemical and industrial processes.

Leads business performance management for the Lithium business by integrating operational KPIs with financial metrics. Partners with Finance on budgeting, forecasting, and variance analysis; supports greenfield project development processes; drives cross-functional process improvements and ISO 9001 certification; builds reporting and digitization infrastructure; and owns executive reporting. The role requires close collaboration with frontline operations, business development, finance, software, and data teams in an industrial environment.

Own the roadmap and product direction for the data platform, analytics, data science tooling, and AI-driven workflows. The role involves stakeholder discovery, prioritization, product specifications, KPI definition, build-versus-buy decisions, data integration standards, prototyping, and driving agentic tools from proof of concept to production. The Technical Product Manager will bring structure to ambiguous initiatives, align technical and business stakeholders, and establish supported, scalable software practices.

Lead controls programming, equipment engineering, plant automation, and mineral refining project execution from concept through commissioning and operations handoff. Manage external providers and cross-functional technical teams, support junior engineer development, build technoeconomic models, prepare financing deliverables, and identify software and machine-learning opportunities for automating capital projects and optimizing plant controls.

Lead Mariana Minerals’ finance organization across FP&A, accounting, controllership, treasury, audit, budgeting, forecasting, reporting, and financial systems. Partner with executives, project leaders, investors, and the board on capital allocation, financial modeling, and growth planning. Strengthen internal controls, technical accounting, and finance infrastructure while scaling the team and supporting future fundraising and public-company readiness.