Jobs at Castleton Commodities International

Supports U.S. indirect tax compliance and analysis for oil liquids activities. Responsibilities include researching tax laws, preparing returns, managing audits and documentation, reconciling payments, resolving tax authority notices, implementing legislative changes, reviewing contracts, and coordinating with trading and operations teams to ensure accurate tax treatment.

Provides administrative and operational support for a power plant team, including invoice processing, purchasing, budgeting, accruals, vendor coordination, SAP and maintenance-system administration, inventory and work-order records, scheduling, and meeting coordination. The role also supports procurement, accounting, special projects, and cross-functional activities involving land, environmental, project management, and safety departments.

Generate, validate, track, and affirm physical and financial oil and refined-products trade confirmations. Reconcile broker recaps, contracts, correspondence, and ETRM records; resolve discrepancies with traders, counterparties, brokers, Legal, Credit, and Commercial teams. Draft waterborne and long-form confirmations, monitor aged or unconfirmed deals, maintain confirmation templates, support reporting, and identify process efficiencies across the trade lifecycle.

Partner with stakeholders to discover AI use cases, configure enterprise GenAI tools, build and maintain high-quality prompts, contexts, and RAG/document-intelligence pipelines, evaluate and improve AI outputs, create reusable playbooks/templates, and enable teams on governed, production-ready AI workflows.

The Senior Site Reliability Engineer improves infrastructure reliability and scalability, partners with various teams, implements IaC and CI/CD, and ensures business continuity through effective BCP/DR planning.

Hands-on cybersecurity internship supporting security operations, vulnerability management, identity/access, data protection, AI security governance, incident-response readiness, DevSecOps, third-party risk, and security awareness. Interns work on supervised projects, collaborate with cross-functional teams, and produce documentation, detection triage, remediation tracking, and leadership-ready reporting while gaining practical exposure to enterprise cybersecurity in a global trading organization.

Summer internship exposing students to physical and financial commodity trading, focusing on market analysis, risk, and technology. Tasks include building models, back-testing strategies, researching market fundamentals, identifying trading opportunities, and presenting findings. Participants receive mentorship, interact with senior leaders, and may be offered full-time roles or rotational analyst positions.

Two-year rotational graduate programme placing analysts on physical and financial commodity trading desks, risk, or weather teams. Responsibilities include market analysis, model development, statistical research, trade idea design and back-testing, and collaboration with internal and external research teams to manage trading risk.

Hands-on role building and maintaining a firmwide front-office trading, investment, and analytics platform. Develop Python services and APIs, SQL-backed data workflows, cloud-native integrations, and visualization tools. Partner with commercial trading teams to optimize trading processes, support market data/positions analysis, and drive cloud-first development.

The Hydrologist role involves designing and maintaining quantitative forecasting tools for hydrological variables, integrating them into power generation forecasts. The role requires strong programming skills and familiarity with hydrological modeling.

The Data Engineer will execute data architecture projects, manage data ingestion processes, ensure data quality, and transition data to new systems while collaborating with investment teams.

The Vice President, Senior Database Administrator leads enterprise database platforms, ensuring security, performance, and scalability while implementing best practices and overseeing teams across cloud and on-prem environments.