Position Description

The Digital (Sitefinity) Developer is a key technical role that enables ESB to deliver its digital transformation agenda through the development and support of business-critical digital platforms. The role contributes directly to customer satisfaction, cloud adoption, operational efficiency and the delivery of innovative digital services that support ESB's transition to a sustainable, low-carbon energy future. By providing technical expertise, supporting platform modernisation activities, and fostering good development practices across teams, the role helps deliver secure, resilient and scalable digital solutions aligned with ESB's business needs and strategic objectives.

The successful candidate should have at least 2-3 years working experience in software development and will be involved in developing ESB’s new Digital Platform services which contains the following components:

Sitefinity Content Management System

.NET Web Applications (MVC and Web API)

Responsive UI Design

Web Services using RESTful APIs

Use of Microsoft Azure for Platform as a Service components

Use of Microsoft Visual Studio Team Services / Azure DevOps for Agile Development

Key Responsibilities

Develop and maintain Sitefinity CMS solutions to support ESB's customer-facing websites
Ensuring design system is being using for new components for existing/new applications
The scoping of work, estimation of time to completion, delivery of high-quality code within the estimated timelines
Deliver enhancements and modernisation initiatives across ESB’s digital platforms, ensuring solution are scalable, secure, performant and aligned with business objectives
Support the operation of business applications by investigating, troubleshooting and resolving complex technical issues while maintaining high levels of system availability and reliability.
Apply and promote software engineering best practices, including Agile delivery, DevOps, automated testing, source control, secure coding and continuous integration/continuous deployment (CI/CD)
Mentoring to junior developers, contribution to capability building, knowledge sharing and the continuous improvement of development standards across the team.

Experience and Qualifications

Essential

At least 2-3 years working experience in software development.
Experience in developing Microsoft .NET C# applications, ideally external facing web applications using Microsoft .NET MVC5 framework, content management systems, HTML5, CSS3 and JavaScript
Experience of software development lifecycle including solution design, development, and release management.
Familiarity with unit testing and source control.
Effective communication skills.
IT qualification or equivalent development experience.
Demonstratable motivation to learn new development skills.

Desirable

A good working knowledge of Sitefinity CMS will be an added advantage
Knowledge of a JavaScript framework (Angular, React, Vue) will be an added advantage.
Experience in developing and using web services, ideally .NET Web API projects using REST or SOAP APIs.
Experience of Agile software development, ideally using SCRUM methodology
Experience of Microsoft Azure Platform as a Service
A good working knowledge of .NET Framework/Core, SQL Server, and IIS
Use of Microsoft Visual Studio Team Services / Azure DevOps

Location

This position will be based in Head Office (27 Fitzwilliam Street Lower)

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 the jurisdiction where 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.

Reporting To

Platform Services Team Lead

Why Work with Us?

Opportunity to lead Ireland’s transition to net zero carbon future
Career development through mentoring and training 
Corporate Social Responsibility Opportunities
Sports and Social Clubs
Networking opportunities
Credit Union
Generous Pension
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

Salary

€49,800 - €58,600 per annum (depending on experience)

Closing Date

28th 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:

Accountable and Ethical
Collaborative
Growing and Adaptive
Proactive
Respectful and Supportive

More information available on Our People Promise

Notes

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.

Sitefinity Developer

Benefits

Job Description