Senior Principal Architect - Security Architecture & Solution Engineering - OT Security

Overview

Own OT security architecture across GSK's global manufacturing, laboratory and research estate, leading a team of seven. The role covers IEC 62443 zone and conduit design, Purdue model segmentation, safety system boundaries, OT vulnerability and detection architecture, and convergence of IT and OT security controls in a GxP-validated environment.

What you'll do

• Own OT security architecture across the global manufacturing, laboratory and research estate.
• Own IEC 62443 zone and conduit design and Purdue model network segmentation.
• Own safety system boundary design and the constraints that follow from GxP validation.
• Own OT vulnerability management architecture where standard IT patching cannot be applied, including compensating control design.
• Own OT asset discovery architecture across sites with incomplete inventories.
• Own OT detection architecture for handoff to the Cyber Defence SOC, which operates it.
• Drive convergence of IT and OT security controls without importing IT assumptions that break production.
• Lead four OT architects across the US, UK and India, plus Workday line management for three architects whose functional work sits in other domains.
• Lead the OT architecture contribution to the Future Ready OT programme, GSK's multi-year effort to bring manufacturing and laboratory sites to a common OT security baseline.
• Assure vendor handover for OT tooling and retain architecture accountability.
• Lead your team in using approved AI tools to improve productivity and ways of working, role-modelling responsible use and following GSK's Responsible AI, privacy and security requirements.
• Evaluate and select OT security tooling against the architecture model, and own the cost and value of the OT security estate across the site portfolio.

What you'll need

• 15+ years in security architecture, including managing matrixed reports across geographies.
• Domain focus: OT Security (OT, ICS and IoT across manufacturing, laboratory and research sites); domain authority aligned to IEC 62443 and the Purdue Model.
• OT zone and conduit segmentation and OT monitoring integration using Claroty, Dragos or Nozomi Networks.
• OT vulnerability management where IT patching cannot be applied: compensating controls, automated asset discovery and risk posture reporting.
• OT detection patterns and playbooks for the SOC and vendor.
• Leading an OT specialist team within GxP-validated manufacturing constraints, where a routine IT control can halt production.
• Applying AI and ML to OT security: anomaly detection in OT networks, AI-assisted asset discovery and secure adoption of AI in manufacturing.
• Bachelor's degree in a relevant discipline, or equivalent professional experience.

Nice to have

• Leading an OT transformation or Future Ready OT style programme at enterprise scale.
• OT asset discovery architecture across sites with incomplete or unreliable inventories.
• NIS2 scoping and reporting obligations for manufacturing sites in scope, and the evidence a competent authority expects.
• OT risk posture reporting to executive leadership, including automated dashboards, and direct engagement with site engineering and operations teams.
• Partnering with Cyber Defence on OT threat exposure management and OT SOC handoffs.

Details

• Location: Bengaluru Luxor North Tower.
• Team spans the US, UK and India.
• Includes Workday line management for three architects whose day-to-day work sits in other domains.