Senior OT Networks Engineer

3 weeks ago

Aberdeen, United Kingdom NES Fircroft Full time
Senior OT Networks Engineer

Purpose of Role:
  • The Senior OT Network Engineer is responsible for the leadership, management, architecture & design to deliver OT Network services across all business units with the aim to consistently meet current and future requirements of the business. It supports business objectives by providing safe, secure and reliable OT networks on the clients 3 and 3.5 levels as per purdue model to ensure the sustainability and efficiency of OT services while adhering to cyber security requirements and Industry standards.
  • The role is responsible for the creation and maintenance of both operational and security related documentation (incl. processes, procedures, design & configuration and network topology diagrams).
  • The role ensures that the appropriate teams across all Business Units and 3rd party vendors protect the integrity and performance of the OT Network.
  • Key requirement of the role is to work with the OT Manager and Senior OT operations engineer to improve ways of working, demonstrated by results such as the level of reliability and security
  • Additionally, the role works in line with the Senior OT operations engineer to define the resilience and disaster recovery strategies.

Critical Responsibilities:
  • Ensure that all activities are carried out in a safe manner complying with all regulatory requirements, legislation and HSEQ procedures

Ethics and Compliance Responsibilities:
  • Ensure that all activities and behaviours are carried out in accordance with Ethics and Compliance Policies and Procedures, and to complete any compulsory compliance training as required

Areas of Accountability, Responsibility and Competence Level:
  • Inputs and adds to the execution of the IS strategy and roadmap, develops relevant functional objectives for the area
  • Is responsible to the OT Manager to work with supply chain to support OT operations sourcing strategy and partner relationship management in decision making and planning
  • Supports the OT Manager with development of the annual OT operations budget from a network and security perspective
  • Supports the OT Manager and regional business units by delivering architectural designs for all supporting OT Networks
  • Assist and develop a comprehensive and integrated ITSM landscape and associated service levels, based on best-practice processes, disciplines, and related toolsets
  • Ensures asset inventories within the OT organisation's ecosystem are kept evergreen
  • Is responsible for the on-going security, performance, stability and maintenance of OT network services
  • Works with the OT security & OT operations teams to ensure security tooling is fully deployed and operational across the whole estate with appropriate reporting, governance and KPI's established.
  • Ensures the adoption of (and commitment towards) service improvements
  • Responsible for ensuring OT operational capabilities achieve regulatory and statutory compliance requirements by adhering to OT standards, governance processes and procedures.
  • May be required to provide out of hours support via an on-call rota
  • May be required to travel internationally on an ad-hoc basis

Critical Skills Qualifications Experience, etc.:
  • Understanding of the purdue enterprise reference architecture and how it is applied in OT networking
  • Excellent network design & architecture skills
  • Experience of leading teams, with the ability to communicate the IS operations objectives and motivate staff
  • Strong Industry, domain-specific knowledge of the IT/OT boundary and how it connects to enterprise networks and Industrial control systems.
  • Experience of developing and implementing process improvements
  • Self-motivated, pro-active and creative with a willingness to go the extra mile to achieve important goals
  • Clear analytical and problem-solving skills with the ability to work under pressure with both internal and external parties
  • Experience of delivering governance practices to track and measure the quality of services, and maintain service improvement plans
  • Strong third-party management skills, working closely with sourcing and vendor managers driving solutions and decision making on products and services
  • Excellent verbal, written and negotiation skills, including the ability to explain technical concepts and technologies to the business
  • Experience of OT Network support and device hardening-WAN, LAN, NxtGen Firewalls etc
  • Previous experience of working with a diverse and multi vendor support model
  • Experience and involvement in internal or external audits in accordance with relevant regulatory standards


With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.

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