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# Senior Systems Security Engineer

- **Company:** Volta
- **Location:** London, United Kingdom (Remote available)
- **Experience:** Expert
- **Salary:** £200,000 - £250,000
- **Contract:** Permanent contract
- **Skills:** Cyber Security, Data Centers, Remote Access Technology, Process Control Systems
- **Published:** November 12, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5961480794

## About the Role

* Expert-level experience in OT or infrastructure cybersecurity in critical environments, typically 8+.
 * A track record setting security requirements across multiple sites or teams, not only assessing single systems.
 * Strong knowledge of controls networks, segmentation, identity and secure remote access.
 * Experience balancing security against plant safety and availability, and making that trade-off clear to leadership.
 * Experience working with enterprise security teams and influencing engineering and vendor decisions., * Data centre BMS/PMS or industrial controls.
 * OT security frameworks such as IEC 62443.
 * Secure commissioning and handover across multiple sites.

## Description

As Senior Systems Security Engineer, you will own how security infrastructure is built into Volta's infrastructure systems, from construction through commissioning to handover. Your focus is operational technology: BMS/PMS, cooling controls and infrastructure management systems across every DSX site.

This is an expert-level individual contributor role. Reporting to the Senior Director, Global Commissioning & Handover, you will set direction across delivery, commissioning and operations teams, and you will own the security acceptance bar every site must clear before it goes live., * Set Volta's OT and infrastructure security requirements for commissioning and handover, across all sites.

 * Define security architecture expectations that align to Volta's high infrastructure security standards.
 * Set the supplier security requirements vendors are contracted against.
 * Own and track the security progress across Volta's end to end security portfolio.

 * Own the security acceptance criteria and decide when residual risk needs escalation or formal acceptance.
 * Lead security reviews and authorised testing of controls systems before handover.
 * Make sure patching, monitoring, incident response and recovery have clear owners at handover.