OT Engineer

This role is part of a major network and systems transition programme at a medical device manufacturing site. You will assess each production asset, prepare the documentation needed for cutover, and help move systems safely onto a new network. You will work with a global transition team and gain experience in a regulated manufacturing environment. What You'll Be Doing ● Assess each manufacturing asset, including control systems, PLCs, HMIs, I/O, and how they connect. ● Review network details: VLANs, IP addresses, firewalls, switch ports, and dependencies. ● Check software and firmware versions, cybersecurity status, and any compliance gaps. ● Record machine-level requirements and prepare clear documentation before each cutover. ● Produce documentation that covers pre-cutover requirements, labelling, configuration changes, and UAT testing. ● Work with site engineering, IT, Quality, Validation, and Operations to plan site visits and cutover activities. ● Take part in site visits and workshops to confirm machine information and get sign-off from stakeholders. ● Support cutover activities: move assets onto the new network, coordinate configuration changes, and check systems work correctly afterwards. ● Help plan and schedule automation project work linked to the transition programme. ● Assess risks for each asset and help plan how to reduce them, including impact on validation and downtime. ● Help create and run test plans, including IT/UAT and cutover checks. ● Follow GxP/GAMP guidance for computerised systems and keep documentation ready for audits. ● Report issues or risks to management promptly. What You'll Need Essential ● A degree in Engineering, Computer Science, Automation, Controls, or equivalent experience. ● Practical experience with OT and automation systems: PLCs, HMIs, SCADA, industrial networks, and field devices. ● Good knowledge of networking basics: TCP/IP, VLANs, subnetting, DHCP, DNS, routing, and managed switches. ● Understanding of GAMP and computerised system validation in regulated environments. ● Experience carrying out site-based assessments and writing up technical requirements. ● Good communication skills and the ability to work with teams across different locations. Desirable ● Experience in medical device or other regulated manufacturing environments. ● Experience with industrial cybersecurity, such as segmentation, firewalls, or NAC. ● Experience with MES, ERP integrations, or industrial protocols such as EtherNet/IP, PROFINET, Modbus, or OPC UA. ● Experience planning or carrying out cutovers for network migrations. ● Experience with database configuration or basic scripting for automation tasks. Skills and Attributes ● High attention to detail and strong documentation skills. ● Proactive approach and good problem-solving ability. ● High professional standards and flexibility to manage changing priorities. ● Strong communication, presentation, and stakeholder management skills. ● Able to assess technical and risk impacts across automation and network changes. ● Good at collaborating and listening to others. ● Solid project management skills and able to meet deadlines. ● Always looking for ways to improve how things are done