To lead the Protective Monitoring team in delivering proactive and reactive monitoring of security events across the organisation’s technical infrastructure. The role ensures timely detection, analysis, and escalation of potential cyber threats, supporting the organisation’s resilience against security incidents. The Team Lead will manage operational processes, develop team capability, and ensure compliance with regulatory and organisational security standards.
Lead and manage the Protective Monitoring team, ensuring effective allocation of resources and prioritisation of tasks. Oversee the monitoring, detection, and analysis of security events using SIEM and related technologies. Ensure timely escalation and coordination of incident response activities in line with organisational policies. Maintain and improve protective monitoring processes, ensuring alignment with industry best practices and compliance requirements. Develop and maintain operational dashboards and reporting for senior stakeholders. Own KPIs and SLAs for the monitoring capability (MTTD, MTTR, false positive rate, ingestion latency) and provide executive reporting. Drive continuous improvement initiatives, including automation and optimisation of monitoring workflows. Provide leadership, coaching, and development opportunities for team members. Collaborate with other Cyber Security teams and stakeholders to enhance threat detection and response capabilities. Ensure adherence to data protection, confidentiality, and security standards across all monitoring activities. Decision-Making: Authority to prioritise monitoring activities and escalate incidents as per policy. People Management: Direct line management of Protective Monitoring Analysts. Systems Access: Elevated access to monitoring tools and platforms for operational oversight. Part of the emergency response arrangements. Some on call working may be required. Ability to achieve SC and NPPV Clearance. Degree or equivalent experience in a relevant discipline (e.g., Cyber Security, Computer Science, Digital Forensics). Proven experience in cyber security operations, specifically in protective monitoring or SOC environments. Demonstrated experience of strong knowledge in information security principles (security principles applied to architecture,...
The Chief Medical Officer (CMO) establishes, directs, oversees and leads Occupational Health (OH) standards across the business, acting as the senior authority on all health matters, providing strategic medical leadership across the Enterprise. To ensure that all matters relating to health within the business are addressed appropriately, taking due account of business risk, business impact, cost and schedule implications, and ensuring delivery of defined OH services that support a safe, healthy and legally compliant workforce. The CMO provides strategic and professional oversight of Occupational Health services, including but not limited to: Management referrals. Health surveillance. Statutory and task-related medicals. Substance misuse sampling and reporting. In addition, the CMO also carries out the Medical Officer (MO) role, undertaking the duties as described in the MO Job Profile. Our Occupational Health department provides a professional and technical support service to the Company and forms a key part of SL site’s first aid provision and medical emergency response to radiological and non-radiological emergencies. The Occupational Health function operates within a complex, highly regulated environment. In addition to preventative and advisory health services, the department forms a critical role in supporting resilience and medical preparedness. The Chief Medical Officer plays a key leadership role in ensuring medical readiness, resilience and professional standards within this operational context.
Represent the interests of SL regarding health issues across the population of external customers, partners, stakeholders and special interest groups, including: - Chair of the Compensation Scheme for Radiation-Linked Diseases. - Representing the company and workers on the National Registry for Radiation Workers, working group, alongside UK Health Security Agency (UKHSA). - Liaise with the Nuclear Decommissioning Authority (NDA), Trade Unions and Office of Nuclear Regulation (ONR). Ensure that appropriate and adequate services, skills, capabilities and resources are distributed within the OH department in order to maintain effective service delivery. Provide direction on work, goals, targets and priorities within the OH department. Delegate appropriate level of authority to OH team members, leading a team of Occupational physicians and nursing staff, including a 24/7 shift nursing team. Ensure the provision and maintenance of the OH department including ensuring adequate succession and development plans are in place to maintain OH capability and delivery. Oversee assurance programme for audit within the business and for external organisations such as Lloyd’s Register Quality Assurance (LRQA) and the Faculty of Occupational Medicine for SEQOHS accreditation. Lead on business continuity and recovery for Occupational Health and all things medical within SL. Liaise with Value Stream Leads, Group Business Services (GBS), Human Resources (HR) and Security Vetting to ensure operational alignment within statutory law and ethical guidance. Ensure that all relevant health legislative requirements and standards are incorporated within the SL Management System and that processes are effective and...
The Cyber Process Manager is responsible for designing, implementing, and continuously improving cyber security processes across Sellafield Ltd to ensure they are efficient, consistent, and aligned with regulatory, operational, and business requirements. The role plays a critical part in embedding structured, repeatable, and auditable practices that underpin the organisation’s compliance, and assurance activities. Operating within a highly regulated and technically complex environment, the postholder works closely with compliance, assurance, and ICT delivery teams to ensure that cyber processes are integrated into day-to-day operations and support strategic objectives. The role also contributes to audit readiness, regulatory engagement, and the development of a mature, process-driven cyber security function that can adapt to evolving threats and expectations.
Lead the design, documentation, and implementation of cyber security processes and workflows. Ensure cyber processes align with CAF principles, regulatory requirements (e.g., ONR SyAPs, NISR 2003), and internal governance frameworks. Collaborate with cyber risk, compliance, and assurance teams to ensure process integration and consistency. Monitor process performance using KPIs and metrics; identify and implement improvements. Support internal and external audits by ensuring process documentation and evidence are maintained and accessible. Act as a subject matter expert on cyber process management, providing guidance to ICT and business stakeholders. Drive process automation and standardisation to improve efficiency and reduce operational risk. Maintain a central repository of cyber security process documentation and ensure version control and accessibility. Support regulatory engagement with the ONR by ensuring cyber security processes are transparent, well-documented, and demonstrably aligned with regulatory expectations. Provide evidence and process insights during inspections, audits, and formal reviews. Support the Head of GRCA and Cyber Risk Team Lead in embedding a culture of process excellence and continuous improvement. Budget Responsibility: Contributes to process improvement initiatives within the GRCA budget. Matrixed Line Management responsibility. Decision-Making Authority: Authority to define and approve cyber process documentation and improvement plans. Strong experience in process design and improvement, ideally within a cyber security or ICT environment. Familiarity with process frameworks such as ITIL, COBIT, or ISO 27001. Understanding of cyber security principles and regulatory requirements (e.g., CAF, NISR, ONR SyAPs). Experience...
A Health and Safety Lead acts as the functional authority within Sellafield Ltd for specific Health & Safety (H&S) discipline (e.g. Conventional Health & Safety, Radiological Protection, Occupational Hygiene, Chemical Safety / COMAH, Fire Protection, Management of Contractors, Governance and Oversight, Regulatory Integration). They ensure that all matters related to the assigned discipline are effectively managed, with appropriate consideration of business risk, cost, and schedule impact. The job holders are responsible for shaping company-wide policy, defining standards, setting improvement objectives, and providing assurance to the SHEQ Director, SHEQ Lead Team and H&S Duty Holders on company safety performance.
Act as the senior authority for Conventional Safety and source of corporate knowledge, in order to provide specialist advice, guidance and services to the business. Shape company H&S strategy and policy, and provide the safety ‘rules and tools’ required to support the safe execution of the Sellafield Plan. Ensure that all relevant legislative requirements, standards and industry good practice are interpreted and incorporated within the Sellafield Ltd Management System. Define company improvement objectives and targets, and establish Key Performance Indicators to measure and monitor performance against those targets. Act as an Intelligent Customer for H&S; owning and overseeing outsourced work, ensuring specifications are clear, outputs meet regulatory and safety standards, and Sellafield Ltd retains accountability for safety-critical decisions. Ensure that effective governance arrangements are implemented across the enterprise and assure the business on performance against legislative and company standards and targets. Ensure accurate and timely reporting of significant H&S issues and ensure that effective corrective action plans and improvement programmes are developed and implemented to address gaps in regulatory compliance. Promote a culture of organisational learning to continually improve performance. Identify and provide ownership and active management of enterprise level H&S risks. Act as a conscience of the organisation, intervening as appropriate to challenge activities which threaten H&S standards and performance. Own and continuously enhance the company’s Health & Safety training programmes, ensuring alignment with regulatory and operational requirements. Define company nuclear baseline and SQEP requirements for key H&S roles....
To deliver advanced and proactive threat hunting and analysis activities that identify indicators of compromise and adversary tactics across Sellafield Ltd’s IT & OT environments. These roles are instrumental in strengthening cyber resilience by uncovering hidden threats, supporting incident response and improving detection capabilities. The Senior Threat Hunter, as a technical specialist, leads continuous improvement, mentors junior staff and ensures compliance with regulatory and organisational security standards, while the Threat Hunter contributes technical expertise and supports capability development within the threat team. Both positions operate within the regulated nuclear environment to ensure resilience, compliance and the safe and secure operation of the site.
For both roles, with the senior role leading/directing and the junior role supporting/delivering: Develop and maintain structured threat hunting methodologies and playbooks to ensure repeatable, high‑quality hunting activities. Execute threat hunting activities to identify indicators of compromise and emerging attack techniques. Identify telemetry gaps and work with the SOC engineering team to improve data visibility and detection logic across IT and OT environments. Adapt hunting methodologies for OT environments, considering unique constraints such as limited telemetry, legacy systems, and operational safety requirements. Analyse threat intelligence and correlate findings with internal telemetry to detect potential risks. Develop and refine/test hunting hypotheses based on adversary TTPs and frameworks such as MITRE ATT&CK. Produce clear, actionable reports and recommendations for remediation and risk reduction. Assist incident response by providing technical analysis and threat context during investigations. Drive/Contribute to automation and scripting initiatives to streamline hunting workflows. Maintain awareness of threat actor behaviours, tools, and emerging vulnerabilities. Support/mentor capability development within the Threat team through knowledge sharing and best practices. Ensure adherence to data protection, confidentiality, and security standards in all threat hunting activities. Threat Hunter: Elevated access to threat hunting platforms, SIEM, and forensic tools. Senior Threat Hunter: Provide technical guidance and mentoring to junior staff Influence stakeholders across CS&IA, HR and the wider Sellafield Ltd organisation Practical (threat hunter) or extensive (senior threat hunter) experience in threat hunting, SOC operations, or cyber forensics. Understanding of...
The postholder owns the Sellafield Enterprise Management System (SEMS) and is responsible for the design, development and delivery of a simplified, fit‑for‑purpose management system that enables the enterprise operating model, improves organisational performance and strengthens regulatory confidence. The role is accountable for ensuring that Quality standards and relevant good practice aligned with ISO 9001 are effective and embedded across organisational arrangements and delivery processes. They provide enterprise‑wide leadership, governance and assurance of the Sellafield management system to ensure compliance with Nuclear Site Licence Condition 17, relevant regulatory obligations, legal requirements and international standards.
Own the Sellafield Enterprise Management System (SEMS), ensuring it remains coherent, controlled, and aligned with the enterprise operating model, regulatory requirements and organisational needs. Lead the design, development and delivery of simplified, fit‑for‑purpose arrangements, enabling efficient business processes, improved organisational performance and strengthened regulatory confidence. Set, maintain and embed Quality standards and relevant good practice aligned with ISO 9001, ensuring they are consistently applied across organisational arrangements and delivery processes. Provide enterprise‑wide governance and assurance of SEMS compliance, ensuring effective adherence to Nuclear Site Licence Condition 17, relevant regulatory obligations, legal requirements and international standards. Provide authoritative SEMS leadership, guidance and specialist advice to operational delivery organisations, working closely with the Head of Core SHEQ Services to ensure consistent, high‑quality support. Ensure clear, disciplined and consistent control of SEMS documentation, configuration and change, maintaining the integrity of the system and supporting efficient business operation. Lead continuous improvement of SEMS and Quality arrangements, ensuring they remain streamlined, performant and aligned with evolving organisational expectations and relevant good practice. Monitor, evaluate and report on the performance and maturity of SEMS and Quality arrangements, providing insight, challenge and recommendations to senior leaders to strengthen compliance and delivery confidence. Identify and manage SEMS risks, ensuring effective mitigation, escalation when necessary, and clear visibility to the SHEQ Director and senior leadership. As a member of the SHEQ Lead Team: ensure a positive SHEQ culture is established and maintained, with SHEQ considerations remaining central to decision‑making; ...
The Threat Intelligence function at Sellafield Ltd is responsible for planning, gathering, processing, and analysing cyber threat information specific to Sellafield Ltd and the broader civil nuclear sector. The team transforms this information into valuable and actionable intelligence to inform risk management, security operations, and strategic planning, supporting the proactive defence of the organisation’s critical assets. This is a newly established threat function within the Cyber Security Operations function at Sellafield Ltd, designed to strengthen the organisations cyber security posture. Sellafield operates in a uniquely complex, regulated and high-stakes nuclear environment, where protection of critical assets is paramount. The role must navigate the challenges of building foundational cyber capabilities from the group up, establishing robust security practices, integrating advanced detection technologies, and developing tailored processes to suit both legacy and emerging technologies. Operating at the intersection of IT and OT the function must ensure seamless delivery, compliance with stringent regulatory frameworks, and resilience against evolving threats.
For both roles, with the senior role leading/directing and the analyst role supporting/delivering: Plan, gather, process, and analyse information from varied sources (open, closed, internal, dark web) relevant to Sellafield Ltd and the civil nuclear sector. Produce high-value intelligence outputs, ranging from technical indicators to strategic advisory for business and operational risk decision-makers. Assess emerging threats, actor tactics, vulnerabilities, and trends; contextualise findings for impact on the organisation. Collaborate with SOC, engineering, and incident response teams to ensure intelligence integration and alignment with current and future threats. Maintain relationships with external partners, government, and sector-specific threat-sharing groups. Develop and enhance processes, methodologies, and policies for the threat intelligence function. Additional duties for Senior Analyst: Lead/direct the planning, gathering, processing and analysis of information from varied sources relevant to Sellafield Ltd and the civil nuclear sector. Drive strategic intelligence initiatives and innovation in analytic practices. Mentor, develop, and manage junior analysts. Represent CS&IA in threat intelligence communities and forums. For Senior Threat Intelligence Analyst: Direct line management responsibility for junior analysts, including mentoring and performance management. Act as the primary escalation point within the threat intelligence function for complex or high-impact threats. Owns the panning and prioritisation of the threat intelligence programme, including developing internal requirements and driving external collaboration. Accountable for quality assuring the key threat intelligence reports and outputs consumed by senior stakeholders and board-level decision makers. Provide subject matter expertise and guidance for...
Provide expert offensive cyber capabilities by leading and supporting the planning, execution and analysis of advanced penetration testing, red/purple team, vulnerability assessment and adversary simulation engagements. The objective is to uncover and proactively mitigate exploitable security weaknesses across IT, OT, Cloud and application environments, thereby supporting a resilient and continuously improving defensive posture for the organisation. The profile spans junior and senior responsibilities from conducting technical tests to mentoring junior analysts and contributing to the strategic development of the offensive security function. These roles operate at the front line of proactive cyber defence; this role challenges entrenched security assumptions and identifies risks before adversaries do. It involves rapidly adapting to technological and threat landscape changes, staying current with emerging threats and tools, and meeting shifting regulatory and organisational demands. Analysts must collaborate effectively, operate ethically, and contribute to continual improvement, knowledge transfer, and maturity of the organisation's offensive security capability.
Conduct penetration tests, vulnerability scans, and red/purple team engagements across infrastructure, applications, cloud and OT environments. Document findings, analyse exploitation risk, and contribute to technical and non-technical reporting. Maintain and update offensive toolsets according to best practice Support mitigation efforts and collaborate with other teams. Assist in adversary simulation scenarios to improve detection and response maturity. Maintain up to date knowledge of threats and offensive security techniques. Participate in scoping and remediation reviews. Maintain professional development and certifications. Operate with high stands of legality and ethics. Hands-on experience with offensive security tools and techniques (e.g., penetration testing frameworks, red/purple team tooling). Understanding of common security vulnerabilities, exploitation methods, and security controls. Good written and verbal communication for reporting and stakeholder engagement. CREST, CHECK, OSCP/OSCE or equivalent certification. Experience in nuclear, defence, or critical infrastructure environments. Experience integrating red team outcomes into blue team/detection engineering pipelines. Open VN Number of Vacancies: 2 Contact/s: Andrew Shutak The interviews for this vacancy are to be confirmed. ASW’s may have the right to apply for internal Sellafield Ltd vacancies. Please note if you are an Agency Supplied Worker you are required to attach evidence of all qualifications obtained to support your application. We require a minimum of A*-C (9-4) GCSE in English Language, Maths & Science/IT or equivalent / higher qualification. If you choose to apply for this role and your application is shortlisted by the...
Responsible for integrating, coordinating, and enabling all SHEQ support activities required by the SHEQ Director and the SHEQ Lead Team. This includes coordination of SHEQ strategy, planning, governance, assurance, reporting, engagement, communication, improvement activity, and other requirements as defined by the SHEQ Director. The role acts as the primary coordinating interface for the SHEQ Director and Lead Team, ensuring clarity, alignment and disciplined execution across all SHEQ functions. Is the core integrator that enables the SHEQ Lead Team to operate as a cohesive, high‑performing leadership body. They ensure that key routine and strategic deliverables to the SHEQ Director, Executive and Board are planned, coordinated and delivered to the required quality, cadence and standard. Through effective integration, prioritisation and orchestration, the role enables the day‑to‑day and year‑on‑year activities of the SHEQ Lead Team to be visible, aligned and delivered at pace - strengthening organisational performance, supporting informed executive decision‑making, and ensuring that SHEQ expectations are consistently reinforced across the SHEQ organisation.
Coordinate and integrate delivery of the SHEQ strategy and ambition, ensuring clear translation of strategic objectives into actionable plans with the SHEQ Lead Team and monitoring progress against agreed priorities. Integrate SHEQ governance and assurance into coherent insight and action, ensuring that oversight, challenge, findings and risks are synthesised into clear messages, prioritised interventions and well‑governed decision‑making for the SHEQ Director and Lead Team. Own and manage SHEQ reporting, ensuring high‑quality, timely and insightful reporting to the SHEQ Director, Executive, Board and internal governance forums, with a focus on performance, risk and delivery confidence. Coordinate and drive SHEQ improvement programmes, ensuring prioritised, aligned and measurable improvements that enhance performance, culture and capability across all SHEQ disciplines. Examples include Workstream Lead for Target Operating Model, MAVE, NISCI, etc. Lead SHEQ communications and engagement, ensuring clear, consistent and effective messaging across the SHEQ organisation and enabling the SHEQ Lead Team to operate as a unified leadership body. Manage the SHEQ portfolio, overseeing financial planning, budget tracking, resource management, headcount oversight and routine SHEQ business delivery to ensure efficient and effective use of SHEQ resources. Coordinate day‑to‑day and long‑term delivery across the SHEQ Lead Team, ensuring SHEQ work programmes, commitments and routine deliverables are aligned, integrated and delivered to the required pace, quality and standard. Enable effective SHEQ Director engagement, acting as the primary coordinating interface to ensure the Director receives the right information, insight, support and alignment across all SHEQ functions. Develop, enable...
To provide advanced cyber security monitoring, analysis, and incident response within the organisation’s security operations framework. The Tier 3 analysts are responsible for investigating escalated alerts, performing in-depth threat analysis, and supporting proactive measures, such as threat hunting to detect and mitigate cyber risks. This role ensures robust detection and response capabilities, continuous improvement of security processes to maintain organisational resilience and compliance.
Monitoring SIEM tools to assure high a level of security operations delivery function. Serve as an escalation point for more junior analysts, providing expert guidance and technical leadership. Lead investigations into high-severity or complex security incidents, coordinating containment and eradication efforts. Working with the engineering team, develop and optimise advanced detection rules, correlation logic, and automation workflows within SIEM and SOAR platforms. Inform proactive threat hunting and identify emerging attack patterns using frameworks such as MITRE ATT&CK. Review and enhance incident response runbooks; ensure they remain fit for purpose and aligned with best practices. Produce detailed post-incident reports and lessons learned, drive improvements across processes and tooling. Collaborate with technical teams to ensure new and changed services are integrated into monitoring and compliance frameworks. Mentor and coach more junior analysts, supporting their technical development and career progression. Deliver knowledge-sharing sessions and contribute to team training plans. Recommend and implement continual service improvements to strengthen cyber resilience. Ensure compliance with organisational security policies and regulatory requirements. Act as a subject matter expert for cyber security monitoring and incident response during audits and stakeholder reviews. Authority to escalate incidents and recommend containment actions. Elevated access to monitoring tools, SIEM, and forensic platforms for analysis. Some on call working may be required. Provides technical guidance and mentoring to junior analysts, influencing Security Operations Centre (SOC) operational strategy. Manage and develop a shift team of Tier...
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