Master SchedulerLeidos

Description

Leidos is seeking a highly organized and detail-oriented Integrated Master Scheduler to join GSM-O II, Integration Services. The successful applicant will play a crucial role in coordinating project timelines, resources, and activities to ensure excellence in program execution. This position requires excellent communication skills, a strong analytical mindset, and the ability to work collaboratively in a fast-paced environment to ensure schedule integrity, alignment with contractual requirements, and proactive identification of risks impacting cost, schedule, and performance.

Primary Responsibilities

• Serve as a Subject Matter Expert (SME) in program management and scheduling tools to identify, track, and report key milestones and contract deliverables across multiple programs.
• Develop, maintain, and analyze resource-loaded Integrated Master Schedules (IMS) using sound scheduling theory and industry best practices.
• Establish and manage scheduling business rhythms, including baseline development, schedule reviews, and supporting artifacts required to meet contractual and programmatic obligations.
• Monitor schedule performance against approved baselines, ensuring alignment with cost, schedule, and delivery objectives.
• Create, maintain, and publish accurate Master Schedules that clearly define tasks, resources, dependencies, and timelines required to meet customer-defined milestones.
• Ensure accurate representation within the IMS of major milestones, decision points, and key lifecycle events.
• Determine and analyze the critical path, task sequencing, and dependencies to proactively mitigate schedule risks.
• Conduct “what-if” and scenario-based analyses to assess alternative execution paths, evaluate impacts, and support leadership decision-making.
• Implement and enforce schedule version control, configuration management, and change control processes to maintain schedule integrity and traceability.
• Support schedule estimating and forecasting activities by collecting input from stakeholders and updating work estimates as needed.
• Generate and present schedule performance reports, including planned versus actual analysis and variance explanations to support corrective action planning.
• Contribute to risk mitigation and issue resolution efforts through proactive schedule analysis and collaboration with program teams.
• Participate in special projects and cross-functional initiatives, providing scheduling expertise as required.
• Regularly assess program metrics and provide actionable insights to Program Managers to ensure program objectives and support requirements are met.

Basic Qualifications

• Bachelor’s degree with 8+ years of relevant experience, or Master degree with 6+ years of relevant experience. Additional experience may be considered in lieu of a degree.
• Must hold an active Secret clearance
• Extensive experience developing and maintaining Integrated Master Schedules (IMS) for complex programs.
• Intermediate to advanced Microsoft Project and scheduling analytics skills.
• Intermediate to advanced expertise using Structured Solutions Inc. (SSI) Tools for Microsoft Project
• Excellent communication skills with the ability to collaborate across technical, programmatic, and leadership teams.
• Ability to work independently, take ownership of the Master Schedule, and manage competing priorities.
• Demonstrated success working in a collaborative, team-oriented environment.
• Strong command of advanced scheduling practices, including:
  • Schedule status processes
  • Resource Loaded Networks
  • Cost and schedule integration
  • 14-Point Analysis and schedule health assessments
  • Critical Path Method (CPM) and float management
  • Schedule execution metrics (BEI, CEI, CPLI, SV, SPI, etc.)
  • Schedule risk modeling and Monte Carlo simulations
  • Baseline change control governance
• U.S. Citizenship required.
• Active Secret clearance required, with the ability to obtain a TS/SCI clearance.

Preferred Qualifications

• Prior Experience supporting Defense Information Systems Agency (DISA)
• PMI Scheduling Professional (PMI-SP) certification
• Scheduling Professional (SP) certification

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

January 28, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.