Manufacturing Systems Owner

Castelion Corporation•Torrance, CA

2h•Onsite

About The Position

Castelion is seeking a hands-on Manufacturing Systems Owner to own the Manufacturing Execution System (MES), related shop-floor platforms, and the data and integrations connecting manufacturing to ERP, PLM, purchasing, quality, and test systems. Reporting to the Director of Enterprise Systems, this role serves as the technical and functional owner of systems supporting work orders, process plans, nonconformances and corrective and preventive actions (NC/CAPA), inventory, and receiving inspection. The role calls for a manufacturing systems domain expert who understands how MES, ERP, PLM, quality, and supply-chain systems work together on a production floor. Applied AI is central to the position: the owner is expected to use LLM agents, automation, and machine learning with shop-floor data to accelerate factory operations, identify missing system capabilities, and help bridge capability gaps. The position is on-site in Torrance, California, five days per week, with occasional travel to New Mexico. It includes supporting technicians and other stakeholders on the floor in Torrance and remotely for New Mexico operations. The position requires access to ITAR-controlled and other export-controlled information. Applicants must be U.S. persons under the stated regulations, and U.S. citizenship is required because the role may require a U.S. government security clearance. An active clearance is preferred; candidates without one must be able to obtain and maintain one if required. Employment may also depend on eligibility to access applicable export-controlled information without additional export licensing. Castelion offers full-time employees long-term equity, four weeks of paid time off, ten company-paid holidays, comprehensive health benefits, paid parental leave, a monthly fitness stipend, onsite EV charging, catered meals, food during high-demand periods, and a stocked kitchen.

Requirements

Bachelor's degree in Engineering, Computer Science, or a related technical field, or equivalent experience.
At least 5 years of experience in manufacturing engineering, manufacturing systems, or factory data/software in a hardware production environment, including at least 2 years of hands-on configuration, administration, or programming of a commercial or in-house MES.
Working knowledge of how MES, ERP, and PLM interact, including work orders, BOMs/MBOMs, routings, material consumption, receipts, nonconformances, and traceability.
Proficiency in SQL and Python for querying, transforming, and automating manufacturing data, and experience with REST APIs and JSON.
Hands-on experience building reports and dashboards with SQL and BI tools, and translating stakeholder questions into clear KPIs and metrics.
Required applied AI experience: shipped production use of LLMs/agents, machine-learning models on manufacturing or operational data, or AI-assisted development and automation, with demonstrable results.
Strong floor presence and communication skills with technicians, engineers, quality teams, and leadership, and an ability to design systems around how work is actually done.
Ability to work on-site in Torrance, California, five days per week, with occasional travel to New Mexico.
U.S. citizenship and the ability to access applicable export-controlled information without additional export licensing; ability to obtain and maintain a U.S. government-issued security clearance if required.

Nice To Haves

Manufacturo or other MES administration, including RBAC, templates, and ERP integration.
NetSuite (SuiteScript/RESTlets) or another ERP integration in manufacturing, and Teamcenter/NX experience with eBOM-to-MBOM processes.
Power BI or similar BI tools, data pipelines such as Airflow, and MLOps/CI/CD tools such as Docker and Git.
Jira/Confluence experience for backlog management, release communication, and documentation.
Experience with quality, supplier, procurement, and test systems such as Magenta, Ground Control, Ramp, Silkline, Sift, or Forge.
Experience with LLM agent frameworks, retrieval over technical documents, or computer vision for inspection and anomaly detection.
Background in high-reliability or high-volume manufacturing such as aerospace, defense, semiconductor, or automotive, including SPC, FAIR/AS9102, and NC/CAPA processes.
Experience building internal software products or evaluating build-versus-buy options for manufacturing systems.
Experience supporting systems in an ITAR, CMMC, or NIST 800-171 controlled environment.
Active security clearance.

Responsibilities

Own the MES end to end, including configuration, work-order and process-plan templates, NC/CAPA workflows, inventory, and receiving inspection.
Administer manufacturing-systems security and role-based access control (RBAC), including role design, onboarding and offboarding provisioning, and periodic access reviews in an ITAR-controlled environment.
Own and improve MES-to-ERP REST API integrations for items and units of measure, work orders, transfers, inventory adjustments, purchase orders, and item receipts; monitor integrations and manage error handling and reconciliation.
Partner with PLM and engineering to mature eBOM-to-MBOM workflows from PLM/CAD into MES and support data exchange with CAM and ECAD tools.
Own the MES SQL database shop-floor data model to ensure production, quality, and inventory data is accurate, traceable, and trusted.
Build and manage manufacturing reports, dashboards, and KPIs using SQL and BI tools, and partner with data analysts and functional experts to define appropriate metrics.
Integrate adjacent quality inspection, supplier portal, procurement/P2P, accounts payable, test-data, and telemetry systems, and deliver API integrations with internal systems and utilities.
Design and deliver applied AI solutions, including LLM agents for work instructions, NC triage, and root-cause analysis, AI-assisted integration development, and machine learning on production and inspection data.
Lead build-versus-buy evaluations and, where appropriate, prototype and deliver in-house tools for MES, MRP, purchasing, and EHS workflows with the Enterprise Systems team.
Run bi-weekly MES meetings, collect requests from manufacturing, quality, supply chain, and engineering, prioritize the backlog, and communicate releases and changes.
Support vendor management for MES and related shop-floor tools, including escalations, release adoption, contract renewals, and roadmap influence.
Maintain the manufacturing-systems roadmap and contribute to the 2027 Enterprise Systems budget for licenses, integrations, headcount, and build initiatives.
Train and support technicians, manufacturing engineers, and quality inspectors on-site in Torrance and remotely for New Mexico operations; maintain documentation for configurations, procedures, and known issues.
Support audits and customer requirements for traceability, configuration control, and AS9100-style quality processes.

Benefits

Meaningful long-term equity for full-time employees.
Four weeks of paid time off.
Ten company-paid holidays.
Comprehensive health benefits, including medical coverage with 100% employee coverage and strong dependent coverage.
Dental insurance.
Vision insurance.
Paid parental leave.
$100 monthly fitness stipend.
Onsite EV charging.
Catered meals, company-covered food during high-demand periods, and a fully stocked kitchen.