Capture and Proposal Manager

At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and sustainability. If you're passionate about making a real impact and want to be part of a community that values ethical excellence, this is the place where your ambition can thrive.

We believe that success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for all. 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. Work‑life balance and flexibility is a key focus area for us.

About the Opportunity: Amentum deliver complex major programmes including construction of new power stations, operational support and life extension for the existing fleet, and clean‑up of the nuclear legacy. We are leaders in reactor technology, conceptual design and engineering for new nuclear technologies including Generation IV advanced reactors, small modular reactors and fusion power.

In our work on decommissioning and remediation, we are a major supplier of engineering design, safety case and project management services at Sellafield and other major UK sites; and we operate the country’s largest private sector complex of nuclear laboratories and engineering test facilities. Within the defence sector, Amentum has an essential role in the UK’s continuous at‑sea deterrent. We’re also active in naval infrastructure and shipbuilding, and in procurement and operational delivery across the whole of the UK Ministry of Defence.

During a time of consistent growth in our key markets we are recruiting for a Capture and Proposal Manager. In this role you'll be accountable for the successful delivery of Sector pursuits and proposals across our Energy, Environment, Technology and Defence portfolios. This is an opportunity to join an international team of high energy individuals working in a highly collaborative environment, competing to be awarded opportunities to solve some of the world’s most pressing problems in the Energy, Environment, Defence and Technology sectors.

The successful candidates will play the role of either Capture Manager or Proposals Manager on large opportunities and may be required to play both roles on smaller opportunities. Our Business Development specialists explore our target markets, identify opportunities, and establish sufficient understanding qualify as opportunities we would take forward.

This will be a strategic role and will contribute to our business unit performance in collaboration with the Growth & Strategy Director (GSD), and Senior Vice President (VP) and Senior Pursuits Director, shaping for growth both internally and externally, embedding a strong culture around the Business Development delivery model, with a strong focus on clients and delivery.

The role will support hybrid working and can be based at any of our Amentum office locations, travel across key locations in the UK will be required to support collaboration and the bid process.

• Work in partnership with the Sector Business Development Directors (BDD) to mature and deliver agreed pursuits and proposals.
• Gain an intimate understanding of the opportunity through initial briefings from the Business Development lead, direct customer interaction and facilitate client intelligence workshops with other customer facing staff.
• Hold win strategy workshops to develop a winning strategy for the opportunity.
• Produce a capture plan for the opportunity, clearly articulating the strategy for winning the opportunity.
• Work with our wealth of technical and delivery staff to establish a solution to the client needs, and a teaming or supply chain strategy for delivery, with commercial and pricing specialists to develop a pricing strategy and with creative specialists to determine the look and feel of the resulting proposal, to underpin the capture plan.
• Test the plan with clients where possible using such discussions to guide the preparation for proposal production.
• Undertake internal reviews and iterate, fine tune and improve the plan to increase confidence in success. Prepare budget proposals and present to checkpoint meetings for approval.
• Provide input and support to client relationships, commercial solutions, operations, and project delivery.
• Undertake pursuit proposal development and delivery of critical opportunities as agreed with the GSD, Sector VP, VP Strategic Sales and the Senior Pursuits Director.
• Provide leadership to the Proposal team in delivering strategic pursuits and proposals aligned with the BD process and milestones.
• Maintain an overview through disciplined application of Capture and provide strategic input against milestone activities by participating in Capture and Proposal reviews where appropriate.
• Work in partnership with the VP Strategic Sales and Senior Pursuits Director to strategically enhance the Proposal capacity over the longer term, including growing Proposal capabilities, talent, work processes, tools and systems to improve the quality of our product and efficiency of delivery.
• Be responsible for strategic application of our Business Growth Model on selective pursuits to win work for the Company.

• Undergraduate Degree; additional education may be substituted for experience.
• Capability in Microsoft Office Suite.
• Demonstrable leadership skills with prior supervisory experience.
• Highly competitive and self‑driven, taking personal pride in beating the best competition continually.
• Hands on, with a can‑do attitude, prepared to roll their sleeves up as required to achieve a winning outcome.
• Collaborative and inspiring. We are a respectful and inclusive team with working environment where all can contribute effectively and request help without fear of negative consequences.
• Experienced in the bidding process, preferably in an international corporate engineering environment.
• Excellent verbal and written communication skills.
• Work may be required after hours and on weekends, and sometimes on short notice. Whilst we encourage efficient working and a good work life balance the nature of the work is characterised by immovable deadlines and requirement changes and as such requires an agile approach.
• Willing and able to travel for business.

Our values are built on a strong foundation of safety, integrity, and respect for every individual. People are at the heart of our mission, and we believe in supporting one another through a culture of care and collaboration. We strive to create a workplace where everyone feels they belong and can thrive. Supporting mental wellbeing and fostering a sense of connection are essential to how we work. When we embrace different perspectives and work together, we become more innovative, more agile, and more successful.

We partner with VERCIDA, for greater online accessibility please visit 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 team.