Senior System and Network Engineer

Wood; United Kingdom; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading engineering consultancy in the United Kingdom seeks a Senior System and Network Engineer to manage cyber security and operational technology at their SAGE St Fergus site. The role includes database administration, fault diagnosis, and improving cyber security measures for operational technologies. Ideal candidates will have a degree in Engineering or Computer Science, significant experience in industrial control systems, and a strong understanding of cyber security principles. This full-time position offers competitive salary and flexible benefits.

Benefits

33 days annual leave

Generous contributory pension scheme

Private medical cover

Competitive salary with regular reviews

Commitment to professional development

Qualifications

• Completed recognized apprenticeship or equivalent certified training program.
• Significant experience in industrial control system network design and OT environments.
• Chartership or relevant professional engineer status preferred.

Responsibilities

• Provide database administration and technical support for SAGE operational systems.
• Perform fault diagnosis and resolution for live operational systems.
• Support implementation of industrial cyber security controls.

Skills

Industrial control system network design

IEC 62443 Cyber Security principles

Engineering documentation writing

Analytical and problem-solving skills

MODBUS communication protocol

DNP3 communication protocol

OPC communication protocol

Education

BSc in Engineering, Computer Science, or related discipline

Tools

Nutanix

Power BI

OPC

Job description

Job Description

Wood is currently recruiting for a Senior System and Network Engineer to join the team at our SAGE St Fergus site. The preference is to be site based full time; however, hybrid working arrangements can be agreed.

Role Overview

The Senior Systems and Network Engineer is responsible for the administration, configuration management, lifecycle support, and cyber security assurance of critical Operational Technology (OT) and Industrial Automation and Control Systems (IACS) within the SAGE environment – Primarily on SAGE’s IACS Purdue Level 3.

Key Responsibilities

• Provide database administration, configuration management, and technical support for SAGE operational systems including PCMS, PI Systems (PI2, PI3), SPEEDO, GSMR/DEWPOINT/EFF Visual Basic applications, and Nutanix virtualisation clusters.
• Maintain configuration control, documentation, and asset registers for OT and networked systems.
• Perform fault diagnosis, troubleshooting, and resolution for live operational systems.
• Support, configure, and maintain system interfaces using technologies including OPC, PI‑to‑PI, Serial Modbus, PI API, PI Client tools, and Vendor Management Systems (VMS).
• Manage system data interfaces with third‑party systems and partners, ensuring data integrity, availability, and security.
• Support embedded applications and advanced data usage within PI systems, including KPIs, diagnostics, CVSL, run hours, PACED metrics, flare flows, and performance monitoring.
• Support the implementation, maintenance, and continuous improvement of SAGE industrial cyber security controls in line with IEC 62443, IEC 27001/27002, and SAGE cyber security policies.
• Interface with Wood IT, Wissen, and the Wood Security Group for network services, firewall rule reviews, approvals, and cyber security assurance activities.
• Support OT intrusion detection systems and participate in cyber risk assessments and security reviews.
• Contribute to the design, review, and maintenance of secure OT network architectures, including segmentation and defence‑in‑depth principles.
• Liaise with and manage specialist software, automation, telecoms, and datacomms vendors, including those supporting leak detection, composition tracking, BPIMS, SPIMS, NINJA, and 4MS services.
• Review vendor system health reports and coordinate corrective actions as required.
• Act as a key technical interface with SAGE Operations, Process Engineering, Ancala Allocations, Supply Chain, IT, Metering, and Project teams.
• Prepare and review engineering studies, specifications, technical notes, scopes of work, system and network drawings, and design documentation.
• Support Management of Change (MOC) activities and acceptance testing for system modifications.
• Provide technical support to Wood projects throughout the project lifecycle, including brownfield upgrades, system replacements, and obsolescence management.
• Support SAGE operations and business users in the effective use of monitoring and historian applications.
• Support systems lifecycle management including patching, upgrades, replacement strategies, and obsolescence planning.
• Prepare and manage Permits to Work for self and vendors working on SAGE systems and infrastructure.
• Ensure compliance with applicable engineering standards, procedures, and best practices.

Qualifications

Essential

• Completed recognised apprenticeship or equivalent certified training program.
• Degree qualified (BSc or equivalent) in Engineering, Computer Science, or a related discipline, or demonstrable equivalent experience.
• Significant experience in industrial control system network design and OT environments.
• Strong understanding of IEC 62443 Industrial Cyber Security principles.
• Good understanding of IEC 27001/27002 Information Security Management.
• Experience with industrial communication protocols such as Modbus, DNP3, and OPC, including associated security considerations.
• Experience delivering and supporting brownfield automation and control system upgrades or replacement projects.
• Proven ability to write technical specifications and engineering documentation.
• Strong knowledge of engineering practices, methodologies, applicable codes, standards, and lifecycle management.
• Inquisitive, well‑organised, and detail‑oriented with strong analytical and problem‑solving skills.
• Demonstrable working experience as a Network or System Engineer or equivalent.

Desirable

• Chartership or relevant professional engineer status accredited by a national or industry engineering institution preferred.
• Professional certifications such as CCNA, CCNP, CWNP, ISA/IEC 62443 Cybersecurity certifications, or GICSP.
• Experience with OT intrusion detection systems.
• Familiarity with safety standards and regulatory requirements applicable to OT environments.
• Understanding of the interaction between physical security and cyber security in industrial systems.
• Experience with modern automation tools, platforms, and engineering software.

Benefits

• Meaningful and interesting projects supporting green hydrogen and fuel switching, as well as local clients with energy transition.
• Commitment to Diversity and Inclusion with employee networks that give all employees a voice.
• Competitive salary with regular salary reviews to ensure market alignment.
• Flexible benefits package: 33 days annual leave (incl. public holidays), generous contributory pension scheme, private medical cover, 4× base salary life insurance.
• Commitment to continued professional development with tailored development plans.
• Global connections with experts worldwide shaping industry standards.

About Wood

Wood is a global leader in consulting and engineering, helping to unlock solutions to critical challenges in energy and materials markets. We provide consulting, projects and operations solutions in 60 countries, employing around 35,000 people.

Diversity Statement

We are an equal opportunity employer that recognises the value of a diverse workforce. All suitably qualified applicants will receive consideration for employment on the basis of objective criteria and without regard to the following (which is a non‑exhaustive list): race, colour, age, religion, gender, national origin, disability, sexual orientation, gender identity, protected veteran status, or other characteristics in accordance with the relevant governing laws.