IT/OT Systems & Integration Engineer - Operations Systems Support

Electricity Supply Board; Dún Laoghaire-Rathdown; Hybrid; EUR 71,000 - 84,000; Full time

Benefits offered by this job

Smart Working

Well-being programmes

Parental leave

Diversity & inclusion

Networking opportunities

Job summary

ESB Networks in Dublin seeks a Senior IT/OT Systems & Integration Engineer to support, maintain and enhance critical OT systems including NMS, SCADA and GIS. You will manage data exchanges, interfaces with ESB and third parties, and oversee vendor activities to ensure stability and security across Ireland's electricity network.

The role emphasises knowledge transfer, documentation, and capability development within the OSS team, with hybrid working and a focus on delivering value for a net-zero

Qualifications

• Minimum of 8 years post-graduate experience in CS or IS or related field.
• Proven ability to support, maintain and troubleshoot mission-critical IT/OT systems.
• Excellent Unix/Linux administration and shell scripting capabilities.
• Excellent SQL querying, database analysis, and PL/SQL skills.
• Experience in Python programming.
• Experience developing and maintaining system integrations and interfaces.
• Strong data management, validation, cleansing and maintenance.
• Ability to investigate issues, identify root causes and fix them.
• Experience supporting System/Integration/UAT/Regression testing.
• Ability to produce and maintain high-quality technical docs and runbooks.
• Experience supervising and mentoring junior teammates.
• Strong vendor management and cross-functional collaboration skills.

Responsibilities

• Support and maintain ESB Networks OT systems including NMS and SCADA.
• Develop and maintain custom interfaces between OT systems and ESB/third-party apps.
• Coordinate with OT vendors; review changes and guide new functionality.
• Enhance OT reporting functionality to meet operational needs.
• Perform data maintenance and data quality activities across OT envs.
• Lead system upgrades, testing, and problem resolution activities.
• Create and maintain technical documentation and runbooks.
• Mentor junior team members and promote knowledge transfer.

Skills

Unix/Linux

SQL

Python

System integrations

Data management

Vendor management

Technical documentation

Mentoring juniors

Problem solving

Cross-functional collaboration

Communication skills

Education

Computer Science / Information Systems related discipline

Tools

SCADA

NMS

GIS

Oracle NMS

Hexagon GDesigner

SCADA/NMS integration tools

Job description

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IT/OT Systems & Integration Engineer - Operations Systems Support

Vacancy Number: 29249

Category: Engineering - Other

Job Type: Full-time

Position Description

The Operations Systems Support (OSS) team within ESB Networks' Distribution Markets and System Operations (DMSO) function are seeking to fill the role of Senior IT/Operational Technology (OT) Systems and Integration Engineer. The role of the OSS team is to support and maintain ESB Networks mission critical OT systems enable the monitoring, control, and management of Ireland's electricity distribution network. These include Supervisory Control and Data Acquisition (SCADA), Electricity Distribution Network Management System (NMS) and Geographic Information System (GIS). These systems support real-time network operations, outage management, fault response, service restoration, and data exchange across multiple business and operational platforms.

This role provides a unique opportunity to support capabilities that form part of Ireland's critical national infrastructure. You will work at the forefront of Operational Technology, supporting the processes that underpin transformation of the electricity network as ESB Networks delivers the systems required for increased renewable generation, network flexibility, electrification and the transition to a net-zero future

The Senior IT/OT Systems and Integration Engineer is responsible for supporting, maintaining and enhancing ESB Networks’ critical Operational Technology systems, including NMS, SCADA and associated applications. The role ensures these business-critical platforms remain secure, resilient and available to support network operations, outage management and service restoration. Working closely with business and technology stakeholders, you will help deliver the technologies that support the ongoing transformation of Ireland’s electricity network.

The position involves delivering enhancements to the existing OT systems, supporting system upgrades and patch deployments, troubleshooting complex technical issues, and carrying out data management activities such as housekeeping, environment refreshes, and data integrity maintenance. The Senior IT/OT Systems & Integration Engineer is also responsible for developing and maintaining custom interfaces and integrations between OT systems and ESB or third-party applications ensuring seamless data exchange and operational effectiveness across the organisation.

A key element of the role is working with OT vendors, providing oversight across system support and enhancement activities. Responsibilities include reviewing and approving change requests, supporting the implementation of new functionality, coordinating problem resolution, and engaging with vendor support teams at all levels to ensure timely and effective issue management.

In addition to technical responsibilities, the role has a strong focus on knowledge management and capability development. This includes producing and maintaining high-quality technical documentation, standard operating procedures, configuration records, user guides, and operational runbooks to support effective system operation and support. The Senior IT/OT Systems & Integration Engineer will also play an important role in mentoring and developing junior team members, promoting knowledge transfer, supporting structured training programmes, and building sustainable technical capability within the Technical Operations team.

Key Responsibilities:

• Support and maintain ESB Networks critical OT systems, including Electricity Distribution
• NMS and SCADA, ensuring the system availability, reliability, and performance.
• Troubleshoot and resolve complex application, integration, and operational technology issues within the OT systems.
• Support, maintain, and develop custom interfaces between the OT systems and ESB and third-party systems, ensuring the effective integration and exchange of operational data.
• Support, maintain, and enhance custom Electricity Distribution NMS reporting functionality to meet operational and business reporting requirements.
• Perform data maintenance activities, including data maintenance and data quality activities, validation, and data refreshes across OT environments.
• Support the development and optimisation of advanced Distribution Management System (DMS) capabilities including, Power Flow Analysis, Fault Location, Isolation and Service Restoration (FLISR), Distributed Energy Resource Management Systems (DERMS), Load Forecasting, Network Optimisation.
• Contribute to the ongoing evolution of smart network capabilities that support increased renewable generation, electrification and network flexibility.
• Delivery of enhancement projects for the existing OT systems, ensuring alignment with operational and strategic objectives.
• Work with OT system vendors to ensure issue resolution, review and approve change requests, guide the implementation of new functionality, and coordinate effectively with vendor support teams to ensure systems remain stable, secure, and aligned with operational and business requirements
• Support the delivery of new projects including system upgrades and problem resolution activities.
• Support testing activities, including system, integration, user acceptance, and regression testing for upgrades, enhancements, and new functionality.
• Work closely with the wider OSS team, OT Delivery, Enterprise IT Services, the OT vendors, and business stakeholders to ensure the successful operation and continuous improvement of critical real-time operational systems.
• Work closely with other areas of the business to understand operational requirements, address system issues, and deliver effective technology solutions.
• Maintain regular engagement and communication with team members, business stakeholders, vendors, and support teams to ensure effective service delivery and project execution.
• Support knowledge management and capability development including producing and maintaining high-quality technical documentation, standard operating procedures, configuration records, user guides, and operational runbooks to support effective system operation and support
• Supervise, mentor, and support junior team members, promoting collaboration, knowledge sharing, and technical skill development.

Essential Knowledge, Skills and Experience

• Minimum of 8 years post-graduate experience in Computer Science, Information Systems or a related discipline
• Proven ability to support, maintain and troubleshoot mission-critical IT/OT systems with high availability and resilience requirements.
• Excellent Unix/Linux administration and shell scripting capabilities (Bash, KSH).
• Excellent SQL querying, database analysis, and PL/SQL programming skills.
• Experience in Python programming.
• Experience developing and maintaining system integrations and custom interfaces.
• Strong data management skills, including validation, cleansing, transformation, and maintenance activities.
• Ability to investigate complex technical issues, identify root causes, and implement sustainable solutions.
• Experience supporting testing activities, including System Testing, Integration Testing, User Acceptance Testing, and Regression Testing.
• Ability to produce and maintain high-quality technical documentation, operational procedures, and support documentation.
• Experience supporting system enhancements, upgrades, and project delivery activities.
• Ability to supervise, mentor, coach, and technically develop junior team members.
• Promote collaboration, knowledge sharing, and continuous improvement across the team.
• Ability to provide technical leadership and guidance during problem-solving and project delivery activities.
• Excellent analytical and problem-solving skills.
• Ability to work independently and within a team environment with minimal supervision.
• Ability to work effectively with cross-functional teams and business leaders to define requirements, resolve issues, and deliver solutions.
• Strong vendor management skills with the ability to build and maintain effective relationships with technology partners.
• Excellent communication, presentation, and report-writing skills.
• Strong interpersonal skills with the ability to engage effectively at all organisational levels.
• Strong organisational skills with the ability to manage multiple priorities and meet demanding deadlines.
• Flexible and adaptable approach to work, with a strong focus on customer service and operational excellence.
• Self-motivated with the ability to manage personal workload while supporting wider team objectives.

Desirable Knowledge, Skills and Experience

• Experience working with SCADA and NMS or similar OT systems
• Experience working with Electrical Utility Network Data Models
• Experience is software development, programming and scripting
• Experience working with electrical Network Management systems, ideally Oracle NMS
• Java and C Programming experience
• Experience working with GIS systems such as Hexagon’s GDesigner

Reporting to

Operations Systems Support Technology Operations Lead

Location

ESB Networks, Leopardstown Road, Dublin 18

Smart Working at ESB is designed to make ‘in-person’ time together as purposeful as possible while also enabling the effective use of digital tools and hybrid arrangements to preserve our commitment to flexibility. The successful candidate may work flexibly within thejurisdictionwhere they have been employed, with attendance at the workplace for in-person collaboration at least two days per week. All Smart Working arrangements are subject to regular review based on the operational requirements of the role, the team, and the business.

Why Work with Us?

• Opportunity to lead Ireland’s transition tonet zero carbon future
• Career developmentthrough mentoring andtraining
• Corporate Social Responsibility Opportunities
• Sports and Social Clubs
• Networking opportunities
• Credit Union
• Access to staff well-being programmes
• Generous parental leave entitlements
• Strong values-based and inclusive culture
• Strong commitment to diversity, equity and inclusion
• Great team environment working to our Core Values: Courageous, Caring, Driven and Trusted

€71,000 to €84,000 per annum

Closing Date

22nd October 2026

Interview

Candidates who are shortlisted for interview will complete a Behavioural Interview based on each of the following Behaviours, which underpin how we work at ESB and are critical to delivering our strategy:

• Your application will be held in reserve for 6 months should you be suitable for the role.
• The successful candidate will be required to evidence their right to work in the Republic of Ireland prior to commencement of employment.

Diversity, Equity and Inclusion Statement

ESB is committed to being an equal opportunities employer. We welcome applications from all sections of society and ensure that no one is discriminated against on the grounds of race, religion or belief, ethnicity or nationality, disability, age, citizenship, marital status, domestic or civil partnership status, sexual orientation or gender identity, or any other basis as protected by law.

Applicants who anticipate requiring assistance or reasonable accommodations for any part of the application or interview process may contact, in confidence, [e-mail].

About ESB

Join us in our mission to achieve a net-zero electricity system by 2040. ESB is Ireland’s leading energy utility, with activities spanning electricity generation, transmission and distribution, energy supply, energy services and international consultancy. Operating in Ireland, Northern Ireland and Great Britain, we invest over €1 billion each year to deliver a new energy future based on reliable, affordable zero-carbon electricity.