Commissioning Operability Team Member

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. Here, 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. We’re happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.

About the Opportunity

The Decommissioning Alliance (TDA) is a strategic partnership, operating within the DNWP framework and delivering critical decommissioning work at Sellafield, including the UK’s most challenging Legacy Ponds facilities. As a key partner within DNWP, TDA contributes to Sellafield Ltd.’s mission while ensuring communities, supply chains, and stakeholders benefit from meaningful, measurable Social Value outcomes.

As a Commissioning Operability Team Member, you are responsible for ensuring that operational readiness is embedded throughout the project lifecycle. This entails collaborative working with project delivery teams, external contractors and client(s) to support setting to work people, plant & procedures and to validate operational readiness.

Key Responsibilities:

- Prioritising safety as the highest priority on the project, striving towards Zero Harm, and act as a role model in all aspects of safety, nuclear, radiological, conventional, and environmental safety.

- Support the development and implementation of working level instructions including operator instructions, alarm response instructions, emergency operating instructions and maintenance instructions ensuring compliance with Design Specifications & Site Licence Conditions.

- Provide support and input to multi discipline design reviews, HAZCONs HAZOPs, HAZANs, and work closely with the engineering team.

- Liaise with Design, Vendors and other SME to develop working level instructions to ensure maintenance and preservation arrangements are upheld in line with system design intent

- Present working level instructions at approval committees, ensuring documentation is fit for purpose in line with operational, environmental, engineering and safety case requirements.

- Carrying out document validation safely and efficiently throughout all phases of Start Up, recording supporting data in accordance with validation requirements.

- Witnessing of operational activities undertaken by Vendors and Equipment Specialists, to ensure O&M documentation is produced in-line with Design and Statutory Requirements. Review Vendor O&M documentation in line with Validation of Working Level Instructions. Provide support with the coordination and deployment of Commissioning Operability Resource and team development.

- Contribute to operational readiness assessments, safety case reviews and plant compliance checks

- Deliver allocated operability work scope in line with project plans and commissioning milestones

- Contribute to facility walkdowns, operability reviews, and readiness verifications. Communicate operability issues, risks, and readiness status clearly to stakeholders.

Here's What You'll Need:

- Experience supporting commissioning start-up, operational readiness, or plant operations activities within a highly regulated industry such as nuclear, defence, power generation, petrochemical, or process manufacturing.

- Demonstrable understanding of Nuclear Site Licence Conditions and the requirements associated with safe plant start-up, operation, and compliance.

- Experience developing, reviewing, and validating operational documentation, including operating instructions, maintenance instructions, alarm response instructions, and emergency operating procedures.

- Knowledge of commissioning and operability processes, ensuring that People, Plant, and Procedures are prepared for safe and effective operations.

- Experience participating in multidisciplinary design reviews, HAZOPs, HAZANs, HAZCONs, risk assessments, and safety reviews.

- Proven ability to work closely with engineering teams, vendors, equipment specialists, and operations personnel to develop and maintain plant documentation in line with design intent.

- Experience reviewing vendor Operation & Maintenance (O&M) documentation and ensuring compliance with design, statutory, and operational requirements.

- Experience conducting document validation, plant walkdowns, readiness reviews, operability assessments, and compliance checks.

- Strong stakeholder management and communication skills, with the ability to clearly communicate operability issues, risks, and readiness status to project teams and management.

- Ability to work effectively within multidisciplinary teams while maintaining high standards of professionalism, accountability, and safety culture.

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 in everything we do. We know that if we are inclusive, we’re more connected, and 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.

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 team.

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