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Join JLL's dynamic team serving one of the world's largest banking and financial services organisations with a network spanning more than 50 countries and territories. We're seeking talented professionals who thrive in fast-paced environments and are eager to drive meaningful change. This is an outstanding opportunity to work alongside industry experts that help shape the future of workplace strategy for a globally recognised institution. Whether you want a career that could take you to the top or an exciting new direction, we offer opportunities, support and rewards that will help you stand out, fulfil your potential, and ultimately make your mark on something truly exciting.
BMS & Operational Technology Systems Engineer - London Based
JLL is seeking an experienced BMS & Operational Technology (OT) Systems Engineer to support the reliability, performance, resilience and secure operation of building management and control systems across a critical London portfolio.65
The role is principally focused on BMS / industrial controls engineering delivery—including BMS servers, supervisory software, integration gateways, controllers, field networks and OT connectivity. In addition, the role will provide resilience and security assurance, ensuring OT/BMS systems are managed in a controlled, standardised and risk-aware manner in line with client operational resilience expectations.
This position works closely with operational engineering teams, IT/network teams, BMS service providers and client stakeholders to deliver stable, secure and auditable building controls operations.
As a BMS & OT Systems Engineer (Resilience & Security) you will take technical ownership of the OT/BMS estate within a multi-site critical portfolio. You will provide hands-on engineering support, manage specialist vendor delivery, and embed structured controls for secure access, patch governance and recoverability while maintaining operational uptime.
This is not a pure cyber role. It is a controls engineering role with embedded resilience and cyber-awareness responsibilities.
Operational Technology Operations & Engineering
Support commissioning, testing, tuning and validation of control strategies, alarms, trends and system performance.
OT/BMS Network & Integration
Support integration of OT-connected assets (e.g., meters, UPS/generators, chillers, lighting controls and specialist systems).
Resilience, cyber & security
Governance, Change Control & Standards
Maintain configuration control and system baselines (versions, controller backups, databases, golden builds).
Stakeholder & Vendor Management
Essentials Skills & Experience
Working knowledge of OT communications and integration protocols (e.g., BACnet, Modbus, OPC, LonWorks or equivalents).
Desirable Skills & Certifications
Awareness of OT security principles such as segmentation, access control, remote connectivity controls, patch governance and recoverability.
Location:
On-site –London, GBR
If this job description resonates with you, we encourage you to apply even if you don’t meet all of the requirements. We’re interested in getting to know you and what you bring to the table!
At JLL, we harness the power of artificial intelligence (AI) to efficiently accelerate meaningful connections between candidates and opportunities. Using AI capabilities, we analyze your application for relevant skills, experiences, and qualifications to generate valuable insights about how your unique profile aligns with the specific requirements of the role you're pursuing.
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