Sr MES Engineer

About the role

Excelitas Technologies is seeking an experienced Senior MES Engineer to lead site‑level implementations of Siemens Opcenter Execution Semiconductor across its photonics and semiconductor manufacturing operations in Boulder, CO.

Key responsibilities

• Lead site implementations, managing plans, milestones, resources, risks and status reporting.
• Assess site readiness, document processes and data flows, and drive implementation decisions.
• Translate manufacturing, quality, operations and compliance needs into clear requirements and acceptance criteria.
• Coordinate testing, validation, SIT, UAT, defect triage and data validation.
• Lead operational readiness, change‑management activities, training delivery and post‑go‑live support.

Required profile

• Bachelor's degree in Engineering, Computer Science, IT, Manufacturing Systems or equivalent practical experience.
• 8+ years in a manufacturing environment with at least 3 years on MES or digital shop‑floor implementations.
• Hands‑on experience with Siemens Opcenter Execution Semiconductor or similar enterprise MES platform.
• Experience with SAP‑to‑MES integration, manufacturing master data and interface testing.
• Familiarity with Lean, Six Sigma or other structured process‑improvement methods preferred.

Required skills

• Siemens Opcenter Execution Semiconductor (or comparable MES platform)
• SAP integration
• SQL and data‑mapping
• APIs or middleware integration
• Industrial automation interfaces