Senior Production Scheduler

About the Company

Millennium Space Systems (MSS), a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions directly impact global security, such as missile warning and Earth observation. Our team is curious, bold, and innovative, taking risks and exploring new techniques and technologies. We influence change by challenging the status quo and celebrate the launch of each satellite we build.

Senior Production Scheduler (Level
4) – El Segundo, CA. This role supports manufacturing execution across multiple programs and work centers, establishing and owning production schedules and Estimated/Expected Completion Dates (ECDs) to ensure on‑time delivery of program commitments. The Scheduler partners closely with cross‑functional teams including Supply Chain, Production, Manufacturing Engineering, Program Management, and Quality to align material availability, capacity, and priorities.

• Own and maintain end‑to‑end production schedules, including work‑center schedules, build plans, and key milestones.
• Establish, manage, and be accountable for ECDs and schedule commitments across assigned programs and work centers.
• Develop, baseline, and continuously maintain executable production schedules that reflect material availability, capacity, and labor constraints.
• Monitor schedule performance, identify risks and delays, and proactively develop recovery plans or schedule alternatives.
• Communicate schedule status, risks, and impacts clearly to program teams and leadership.
• Collaborate with Supply Chain to align schedules with material availability, lead times, and procurement constraints.
• Partner with Production, Manufacturing Engineering, Program Management, Quality, and other functional teams to ensure schedule feasibility and execution alignment.
• Support program planning and execution activities from initial build planning through delivery.
• Identify gaps, inefficiencies, and risks within current scheduling and execution processes.
• Recommend, develop, and implement process improvements to enhance schedule accuracy, execution efficiency, and cross‑functional alignment.
• Support the transition from manual or interim tools (e.g., spreadsheets) toward system‑based scheduling where applicable.
• Contribute to standard work, scheduling best practices, and continuous improvement initiatives within Manufacturing.
• Develop and manage schedules using advanced scheduling tools such as APS systems, Microsoft Project, or equivalent production scheduling software.
• Ensure schedules integrate with enterprise systems (e.g., MRP/ERP) and serve as a reliable source of truth for execution.
• Support data‑driven decision making through accurate schedule analysis and reporting.

• 3+ years of experience in manufacturing scheduling and/or production planning.
• Experience leading multi‑disciplinary teams to meet aggressive schedules.
• Experience using Integrated Scheduling tools such as Open Plan Professional, Microsoft Project Professional, Enterprise Project Management, or a similar tool.
• 3+ years of experience performing scheduling in a production environment utilizing an MRP system.
• Experience collaborating across functions and organizational levels.
• Analytical, communication, and problem‑solving skills.
• 3+ years of experience managing multiple projects simultaneously, prioritizing tasks, and meeting deadlines in a fast‑paced environment.

• Bachelor’s degree with 6+ years of relevant experience, or Associate’s degree with 8+ years of relevant experience.
• Experience with Advance Planning Software (APS) and Manufacturing Execution System (MES).
• Experience in aerospace or space systems manufacturing, including low‑rate or high‑mix production environments.
• Ability to balance technical, capacity, and schedule constraints to meet customer and program commitments.
• Experience supporting production in non‑traditional or agile aerospace environments.
• AACE, PMI, or other relevant professional certifications.

• 100% onsite; the selected candidate must work onsite at the El Segundo facility.
• Shift: 1st Shift.
• Mus…