Senior OT Cyber Security Analyst

Lightsource BP; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading renewable energy company in Greater London is seeking a dynamic Senior Analyst to monitor cyber risks and facilitate vulnerability remediation for IT and OT systems. Candidates should possess extensive cybersecurity experience, particularly with Microsoft's security stack and threat landscapes. This role entails collaborating with various teams, ensuring compliance with regulations, and developing security policies. Competitive salary and benefits include a bonus, health insurance, and personal development initiatives.

Benefits

Competitive salary

Annual bonus

Health insurance

Pension

Qualifications

• Extensive experience in cybersecurity, especially in cloud environments.
• Proven record in managing security incidents and vulnerabilities.
• Certifications like AZ-500 or CISSP are highly valued.

Responsibilities

• Monitor the security state of IT and OT environments.
• Conduct threat hunting and incident response activities.
• Ensure compliance with relevant cybersecurity regulations.
• Support the development of security policies and standards.

Skills

Cybersecurity

Threat intelligence

Vulnerability assessment

Stakeholder management

Education

Bachelor’s degree in Computer Science, Information Security, or related field

Tools

Azure Sentinel

Defender for Cloud

Cisco Secure Access

Tenable

Job description

Summary

We are looking for a dynamic, hands‑on senior analyst who will be responsible for monitoring cyber risk and facilitating the remediation of identified vulnerabilities for IT and OT systems across Lightsource bp. The ideal candidate will have extensive experience in cybersecurity, a strong understanding of threat landscapes, and the ability to mentor junior analysts. This role will leverage global resources and tools to develop business cyber maturity, with a strong focus on the Microsoft security stack.

Responsibilities

• OT & IT Security Monitoring : Continuously monitor the security of both OT and IT environments, including understanding of SCADA systems, Industrial Control System (ICS), and supporting infrastructure for potential threats, anomalies, and signs of compromise.
• Threat Hunting & Incident Response : Utilise tools such as Azure Sentinel, Defender XDR, Defender IoT, Cisco Secure Access, Purview, and Tenable to proactively hunt for security threats across IT and OT networks, leveraging threat intelligence relevant to the organisation.
• Vulnerability Management & Patching : Identify and assess vulnerabilities within SCADA, ICs, and OT devices, ensuring timely remediation in collaboration with Infrastructure, Digital Workplace, and Support teams.
• Regulatory Compliance & Audit Support : Ensure compliance with NIST 800‑82, IEC 62443, OG86, NERC‑CIP, SOCI, NIST‑CSF, NIS2 and other relevant regulations. Assist in cyber security audits and risk assessments for OT environments.
• Security Policy & Governance : Support the development and enforcement of OT security policies, standards, and procedures, ensuring alignment with industry frameworks and best practices.
• Stakeholder Communication : Work closely with Cyber Security Managers, OT Engineers, and Business Leaders to communicate risks, provide updates during security investigations, and drive awareness of OT‑specific threats.
• Incident Investigation & Documentation : Ensure all security incidents within the OT environment are fully investigated, documented, and addressed, improving incident response capabilities.
• Security Hardening & Best Practices : Assist in securing industrial networks, remote access solutions, and third‑party integrations by applying industry best practices, including network segmentation, zero‑trust principles, and access controls.
• Define and Measure Excellence : Establish clear security performance metrics and targets that align with the expectations of customers, internal asset management teams, and O& M teams. Ensure security best practices are embedded within OT operations.
• Enhance OT & SCADA Security Awareness : Raise the profile of OT Security and SCADA Security both internally and externally. Work closely with Marketing, communications, and security awareness teams to promote a security‑first culture.

Knowledge

• SIEM – Azure Sentinel, Defender for IoT, Defender XDR, Defender for Cloud, Defender for Cloud Apps, Defender EASM, Copilot for Security
• Vulnerability Management – Defender XDR, Tenable IO / Nessus, Defender EASM
• EDR – Defender for Endpoint
• Data Governance – Purview
• IDAM - Entra
• Device Management - working understanding of Intune including MDM / MAM
• Networking / Firewalls – exposure to Fortinet, Cisco FirePower and Cisco Meraki desirable
• Knowledge of NIST 2.0 Cyber Security Framework required
• Knowledge of IEC 62443 OT standard required
• Good understanding of ISO27001 and Cyber Essentials Plus requirements required
• ITIL Knowledge - Good understanding of ITIL principles and their application required
• Knowledge of NERC CIP and / or SOCI standards desirable

Qualifications

• Bachelor’s degree in Computer Science, Information Security, or a related field.
• Azure Security Engineer (AZ-500), Certified Cyber Professional (CCP), Certified Information Systems Security Professional (CISSP), CompTIA Security+, GCIA, GCIH

Experience

• Extensive experience in managing and utilizing Azure Sentinel, Defender for IoT, Defender XDR, Defender for Cloud Apps and Defender for Cloud / EASM
• At least five years’ experience in security incident handling and security incident response
• Demonstratable experience of working in a Microsoft focused cloud environment.
• Proven experience of understanding and responding to cyber threats
• Expertise in information security technologies : Firewalls, intrusion detection, vulnerability assessment tools, logging solutions, gateway security products, end‑point security products, authentication mechanisms, etc.
• Experience of the Cyber Kill Chain, MITRE ATT&CK and other information security defence and intelligence frameworks.
• OT Cyber Security experience is desirable but not required
• Experience in stakeholder management and engagement to C‑Suite level.
• Experience working for Critical National Infrastructure (CNI) Organisations

Why you’ll want to work for us

Our company is a place where you can be yourself and grow; a place where your ideas and opinions matter.

Be you

We pride ourselves on being an inclusive community, where every individual is valued and treated with respect.

Be responsible

Our culture is driven by our core values. From operating safely to ensuring our solar projects are responsible and promote biodiversity.

Be recognised

Alongside a competitive salary, we offer a variety of benefits including annual bonus, retention bank, health insurance, pension and other local benefits.

Be inspired

Beyond your day‑to‑day working life at Lightsource bp, there’s a variety of initiatives that will contribute to your own personal development. Initiatives to get involved with including our charitable causes, supporting our solar honey project or our sustainability initiatives.

Our Core Values

Lightsource bp truly cares about creating a sustainable future through safe, responsible and meaningful low carbon energy projects. Our core values of Safety, Integrity, Respect, Sustainability and Drive are the guiding principles for everything we do.