We’ll inspire and empower you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow. We offer an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities.
People are our greatest asset, and we offer a competitive package to retain and attract the best talent.
In addition to the benefits you’d expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.
Work-life balance and flexibility is a key focus area for us. We’re happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.
About the Opportunity
Planning isn’t just a technical discipline at Amentum — it’s a strategic function that underpins delivery certainty, commercial control, and stakeholder trust. We’re delivering some of the most complex and nationally significant infrastructure and defence programmes in the UK. To lead this work, we’re looking for a Head of Planning with the credibility, clarity, and control to set the bar.
This role offers the opportunity to shape the future of our planning function across a major multi-year framework. You’ll define governance, assure performance, and build a high-impact team — all while representing planning at the highest levels across delivery, commercial, and client-facing environments
Roles and Responsibilities:
You’ll lead a team of Planning Managers and Senior Planners embedded across multiple projects and workstreams. Your influence will extend from day-to-day delivery through to programme assurance, client engagement, and strategic direction.
Your responsibilities will include:
Leading the planning function across a portfolio of major infrastructure and defence projects
Setting and enforcing planning governance, quality standards, and assurance frameworks
Owning the strategic approach to Cl.31 and Cl.32 programme management in line with NEC4 ECC obligations
Ensuring planning outputs directly support entitlement, CE substantiation, and commercial protection
Embedding short-term and lookahead planning discipline across delivery teams
Representing planning in client and PMO forums, governance reviews, and stakeholder meetings
Managing and developing a high-performing planning team — leading on line management, coaching, succession planning, and setting a culture of consistently high standards
Overseeing the integration of planning data into wider project controls and Power BI dashboards
Acting as a key contributor to continuous improvement, planning maturity, and business protection initiatives
Here’s What You’ll Need
Senior-level planning experience in complex infrastructure or defence programmes
Proven ability to lead and influence at project, portfolio, and client-facing level
Strong technical grounding in NEC4 ECC programme obligations (Cl.31/Cl.32, EWN, CE impact)
Track record of implementing and enforcing planning standards and assurance processes
Confidence in representing planning during commercial negotiations, client reviews, and governance forums
High proficiency in Primavera P6, including programme structuring, quality assurance, and reporting logic
Excellent interpersonal and leadership skills — able to build trust, challenge constructively, and maintain high standards under pressure
Any offer of employment will be strictly subject to the relevant security requirements for the role being met. This means that you will need to have, or be able to obtain, Baseline Personnel Security Standard (BPSS) clearance and either Security Check (SC) or Developed Vetting (DV) clearance. The security clearance process may require non-British nationals or dual nationals (i.e. those with British and another nationality) to be subject to additional evaluation, depending on nationalities held and the nature of the work to be carried out
Our Culture:
Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees.
We aim to embed inclusion and diversity in everything we do. We know that if we are inclusive, we’re more connected, and if we are diverse, we’re more creative. We accept people for who they are, regardless of age, disability, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. This is reflected in our wide range of Global Employee Networks centered on inclusion and diversity.
We partner with VERCIDA to help us attract and retain diverse talent. For greater online accessibility, please visit www.vercida.com to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.
If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the Oliver.Chung@global.amentum.com
Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.
