Overview
Join to apply for the Planning Manager role at Amentum.
We’re delivering nationally significant infrastructure projects that require precision, structure, and strong planning leadership. This role offers the opportunity to lead, influence, and grow in a complex but rewarding industry within a collaborative team.
This role is structured to help you progress through our planning career pathway, with support from your manager and access to development tools. Any offer of employment will be subject to security requirements, including Baseline Personnel Security Standard (BPSS) clearance and either Security Check (SC) or Developed Vetting (DV) clearance.
Responsibilities
* Developing, maintaining, and assuring detailed project schedules using Primavera P6
* Ensuring accurate cost- and resource-loading to support earned value and performance management
* Monitoring progress, managing baselines, and conducting critical path, scenario, and change impact analyses
* Supporting governance reviews, milestone tracking, and risk mitigation activities
* Leading the planning service across allocated projects, including managing planning teams of varying sizes
* Performing full line management duties, including performance reviews, resource planning, and staff development in line with Amentum’s competency framework
* Coaching and mentoring junior planners to strengthen team capability and support career progression
* Supporting change control processes, reviewing early warnings, and advising on time-related contract mechanisms
* Collaborating with cross-functional teams to ensure planning outputs align with project objectives and contract requirements
* Contributing to the development, implementation, and continuous improvement of planning best practices across the wider business
* Being part of a professional planning community supported by the Head of Planning, with opportunities to contribute to continuous improvement initiatives, planning standards, and mentoring
Qualifications
* Proficient with Primavera P6 (including extracting and managing schedule data for reporting), and MS Project
* Experience in regulated sectors (e.g. defence, nuclear, transport)
* Delivery Management: maintaining high-quality planning outputs across project lifecycles; ability to develop programmes from first principles; familiarity with Power BI and NEC contract planning requirements; strong planning experience on complex construction or infrastructure projects
* Collaboration & Influence: building strong relationships and providing clear advice to project teams
* Problem Solving & Improvement: identifying challenges early and helping shape solutions
* Leadership & Development: taking ownership of your work and supporting others to grow
* Governance & Assurance: ensuring planning outputs meet internal and contractual requirements; familiarity with risk and earned value reporting
* Degree or professional qualification in a relevant field (e.g. APM, PMI, CIOB)
Our culture emphasizes safety, integrity, inclusion and diversity, and a supportive environment that values well-being and belonging. We are an Equal Opportunity Employer and support flexible working arrangements. For accessibility needs or recruitment process adjustments, please contact the designated recruiter.
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