Senior software engineer

Company: E.ON UK
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Job Description:

The E.ON I&C Pillar combines the current npower Business Solutions & E.ON B2B businesses to create a new £5billion revenue business serving c60,000 customers and around 300,000 meter points with a view to becoming the number one B2B energy supplier in the UK. The Digital Technology & Change organisation is the integration consisting of Change Management, Digital Data and Technology & Partner and Service Management functions to provide Change & IT services to the E.ON I&C business. The Senior Software Engineer is a key member of the nBS Digital Solutions team and is responsible for leading the build, optimisation and support of effective digital solutions, software and applications . The role holder is required to provide expert consultancy on the solution design, specification, development, build, functional and user testing, deployment, migration and warranty provision of nBS owned and managed digital solutions. The role-holder will have an in-depth and highly specialised knowledge of the nBS Digital Solutions application portfolio, associated business processes and data contained within the systems. The role holder is required to demonstrate the highest levels of creativity in solution design and delivery, keeping abreast of the latest system and industry developments, design and coding trends and has persistence to deliver beyond expectation.

  • Responsible for developing new digital solutions to satisfy business requirements within the nBS product backlog to drive delivery of project benefit to nBS. A chief practitioner in application development for nBS.
  • Responsible for delivering first class support and maintenance of delivered solutions, ensuring solution performance always meets expectations, application stability and delivering solutions to meet defects or changes within agreed SLAs
  • Responsible for supporting E2E delivery of change projects using own knowledge and expertise within the project.
  • Working in partnership with third party developers and EON Digital Technologies to optimize solution delivery for nBS.
  • Responsible for environment management and maintenance, including any hosting, integration, access and security considerations.
  • Responsible for self-learning and development on solution development platforms, practices and techniques
  • Acting passionately as an advocate for innovation, continually challenges traditional thinking.
  • Driving insight and value add from interpretation of customer or user behaviour through detailed usage analytics.
  • Responsible for communicating & interacting effectively with internal or external colleagues and management to explain complex system issues clearly and concisely.
  • Providing trusted technical expertise and specialised knowledge of the nBS Digital Solutions portfolio to impact-assess proposed changes or technological opportunities.
  • Ensuring that all developments, enhancements and support fixes adhere to the DD&C governance model.
  • Responsible for mentoring the developer team. Supporting them with technical expertise, escalating issues and blockers effectively and professionally.
  • Proven experience building successful, low-maintenance enterprise applications and digital solutions.
  • Strong software design and programming skills (Javascript, HTML, XML, SQL, Apex, SOAP, C#, VB.net) and experience with Microsoft .NET and Visual Studio.
  • Experience in using AI tools such as Claude code to fast prototype solutions and mentor other developers in such technologies.
  • Forward-thinking and agile, able to manage multiple projects with flexible prioritisation, anticipating future changes to ensure scalability and opportunity.
  • Proficient in data analysis, process optimisation, and working within change governance and project delivery methodologies (Waterfall & Agile).
  • Excellent communicator, able to translate technical information to non-technical colleagues and bridge gaps between development teams and stakeholders.
  • Sets and maintains high standards in bespoke and digital application development, with strong planning, organisation, self-reliance, and attention to detail.
  • Committed to coaching and guiding teams to ensure consistency across the development lifecycle.
  • Curious, solution-oriented, and driven to deliver “best in class” services while building innovative, opportunity-rich stakeholder relationships.
  • Embraces a culture of trust and empowerment, making autonomous or collaborative decisions to advance design, delivery, and assurance activities.
  • Curious, solution-oriented, and driven to deliver “best in class” services while building innovative, opportunity-rich stakeholder relationships.
  • Demonstrates empathy towards colleagues’ concerns about automation and digitisation and delivers agile solutions aligned with stakeholder expectations, milestones, and quality standards to achieve the nBS digital strategy.

Join E.ON’s I&C Pillar, a dynamic £5 billion business serving 60,000 customers and managing 300,000 meter points, with a bold ambition to become the UK’s leading B2B energy supplier. Within our Digital Technology & Change organisation, you’ll be part of an integrated team delivering cutting-edge Change & IT services to power this growth.We’re seeking a Senior Software Engineer to lead the design, build, and optimisation of innovative digital solutions within the nBS Digital Solutions team. This role offers the opportunity to apply your expert knowledge across solution design, development, testing, deployment, and ongoing support of our digital portfolio.Bring your creativity, deep technical expertise, and passion for innovation to help shape the future of E.ON’s digital transformation and exceed expectations in delivering industry-leading solutions.

Key Responsibilities:

  • Develop new digital solutions to meet nBS product backlog requirements and drive project benefits as a lead application developer.
  • Provide high-quality support and maintenance, ensuring solution performance, stability, and timely resolution of defects or changes within SLAs.
  • Support end-to-end delivery of change projects using expert knowledge.
  • Collaborate with third-party developers and E.ON Digital Technologies to optimise nBS solution delivery.
  • Manage and maintain environments, including hosting, integration, access, and security.
  • Continuously self-learn and develop skills in solution platforms and techniques.
  • Advocate for innovation and challenge traditional approaches.
  • Drive value by analysing customer and user behaviour through detailed usage analytics.

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Posted: October 3rd, 2026