Senior Software Engineer - ServiceNow
About Us
At the National Energy System Operator (NESO), we play a vital role in tackling climate change and securing Great Britain's energy future. We already operate the world's fastest decarbonising electricity system and are working towards our ambition to run it carbon-free for a short period this year - provided the market supplies electricity exclusively from renewable sources. Alongside this, we provide expert advice to government on how to deliver a clean power system by 2030.
In autumn 2024, the Electricity System Operator (ESO) transitioned to become NESO - an independent, expert public corporation with a whole-system view across electricity, gas, and hydrogen. NESO operates independently and transparently, always actin in the best interests of all energy users.
Licensed and regulated by Ofgem, we make impartial decisions that balance sustainability, affordability and security. Our organisation is fully independent from government, the regulator and all commercial interests, with a clear focus on system-wide benefit, long term thing and public value.
The time to deliver is now. Join the energy transformation and help shape the future.
Your energy. Our future. Together
National Energy System Operator (NESO) recognises the potential of bright and talented individuals, and we encourage you to join us as Great Britain’s energy system undergoes an ambitious, exciting, and vital transformation. Together with industry, we are creating a cleaner, more sustainable energy future.
About The Role
National Energy System Operator (NESO) recognises the potential of bright and talented individuals, and we encourage you to join us as Great Britain’s energy system undergoes an ambitious, exciting, and vital transformation. Together with industry, we are creating a cleaner, more sustainable energy future.
We are seeking a highly skilled Senior ServiceNow Engineer to play a key role in the greenfield implementation of our ServiceNow platform. This role requires deep technical expertise in ServiceNow, strong understanding of DevOps & Agile delivery practices, and a mindset that maximizes Out‑of‑Box (OOB) functionality to ensure a scalable, maintainable, and upgrade‑friendly platform.
The ideal candidate will be hands-on, collaborative, and able to partner with product owners, architects, developers, and business stakeholders to build a modern, resilient, and future-ready digital workflow ecosystem.
This role can be based from Wokingham or Warwick and we continue to offer hybrid working from office and home. We are open to full time and part time applicants, as well as flexible working arrangements.
Key Accountabilities
Platform Implementation & Development:
What You'll Get
A competitive salary of £58,000 - £62,000 dependent on experience and capabilityAs well as your base salary, NESO's core benefits are the essential perks and advantages that form part of your employee package. - You will receive a bonus based on company performance- 26 days annual leave as standard - A competitive contributory pension scheme where we will double match your contribution to a maximum company contribution of 12%. - Annual Enrollment to NESO Savings Plan, when you save between £20- £500 a month from your take-home pay, we will pay a 50% matching contribution.
Benefits
NESO's flexible benefits programme provides you with more flexibility around your helath, lifestyle and protection benefits, here's just a few available:
This role closes at 23:59, on the date displayed at the top of this advert, however we encourage candidates to submit their application as early as possible and not wait until the published closing date as this can vary.
Research shows that some people may hesitate to apply unless they meet every single requirement. At NESO, we believe potential comes in many forms and we're committed to a fair, inclusive recruitment
We're committed to building a workforce that represents the communities we serve, and a working environment in which each individual feels valued, respected, fairly treated, and able to reach their full potential. If this role sparks your interest but you're not sure you tick every box, we still want to hear from you. process where everyone has the opportunity to shoe their talents. We celebrate the difference people can bring into our organisation, and welcome and encourage applicants with diverse experiences and backgrounds.
At the National Energy System Operator (NESO), we play a vital role in tackling climate change and securing Great Britain's energy future. We already operate the world's fastest decarbonising electricity system and are working towards our ambition to run it carbon-free for a short period this year - provided the market supplies electricity exclusively from renewable sources. Alongside this, we provide expert advice to government on how to deliver a clean power system by 2030.
In autumn 2024, the Electricity System Operator (ESO) transitioned to become NESO - an independent, expert public corporation with a whole-system view across electricity, gas, and hydrogen. NESO operates independently and transparently, always actin in the best interests of all energy users.
Licensed and regulated by Ofgem, we make impartial decisions that balance sustainability, affordability and security. Our organisation is fully independent from government, the regulator and all commercial interests, with a clear focus on system-wide benefit, long term thing and public value.
The time to deliver is now. Join the energy transformation and help shape the future.
Your energy. Our future. Together
National Energy System Operator (NESO) recognises the potential of bright and talented individuals, and we encourage you to join us as Great Britain’s energy system undergoes an ambitious, exciting, and vital transformation. Together with industry, we are creating a cleaner, more sustainable energy future.
About The Role
National Energy System Operator (NESO) recognises the potential of bright and talented individuals, and we encourage you to join us as Great Britain’s energy system undergoes an ambitious, exciting, and vital transformation. Together with industry, we are creating a cleaner, more sustainable energy future.
We are seeking a highly skilled Senior ServiceNow Engineer to play a key role in the greenfield implementation of our ServiceNow platform. This role requires deep technical expertise in ServiceNow, strong understanding of DevOps & Agile delivery practices, and a mindset that maximizes Out‑of‑Box (OOB) functionality to ensure a scalable, maintainable, and upgrade‑friendly platform.
The ideal candidate will be hands-on, collaborative, and able to partner with product owners, architects, developers, and business stakeholders to build a modern, resilient, and future-ready digital workflow ecosystem.
This role can be based from Wokingham or Warwick and we continue to offer hybrid working from office and home. We are open to full time and part time applicants, as well as flexible working arrangements.
Key Accountabilities
Platform Implementation & Development:
- Participate in and lead technical design and development for a greenfield ServiceNow implementation across ITSM, ITOM, ITAM, HRSD, or other workflow modules.
- Configure and develop ServiceNow applications while prioritizing OOB capabilities, minimizing customization, and ensuring adherence to platform best practices.
- Implement and maintain integrations using IntegrationHub, REST/SOAP APIs, and industry-standard integration patterns.
- Build and maintain CMDB, Discovery, Service Mapping, and automation frameworks in line with service management foundations.
- Work in an Agile Scrum environment, contributing to backlog refinement, sprint planning, and continuous delivery.
- Implement automated testing, CI/CD pipelines, and version control using DevOps toolchains (Azure DevOps, ATF, etc.).
- Support continuous improvement, iterative releases, and feature enhancements aligned with DevOps culture.
- Ensure compliance with platform governance, architecture standards, and development frameworks.
- Maintain comprehensive technical documentation, including solution designs, workflows, and data models.
- Conduct peer reviews, ensure code quality, and enforce architectural patterns that support reliability, security, and performance.
- Drive platform upgrades ensuring minimal technical debt and full compatibility with OOB features.
- Collaborate with product owners, architects, service managers, and business units to translate requirements into scalable technical solutions.
- Act as a ServiceNow subject matter expert (SME) providing guidance and mentoring to junior developers and platform admins.
- Provide L3 support for complex incidents, platform issues, and deployment challenges.
- Strong hands-on ServiceNow engineering experience with progressive responsibility.
- Strong expertise across multiple ServiceNow modules (e.g., ITSM, ITOM, ITAM, HRSD, SPM).
- Proven experience in greenfield implementations and architecting solutions with OOB-first principles.
- Solid understanding of Agile methodologies and working experience in Scrum teams.
- Hands-on DevOps experience with automated testing (ATF), CI/CD pipelines, and deployment orchestration.
- Proficiency in JavaScript, Glide API, Flow Designer, UI policies, Client Scripts, Business Rules, and Data Policies.
- Experience with CMDB, integrations, Discovery, MID Servers, and event-based automation.
- Strong knowledge of platform performance tuning, security (ACLs), and instance management.
- ServiceNow certifications such as CSA, CAD, CIS (ITSM/ITOM/HRSD or others) preferred.
- Experience in ServiceNow SPM, VR, or SecOps modules.
- Exposure to cloud platforms (Azure/AWS), SRE practices, or automation frameworks (Ansible, Terraform).
- Experience supporting multi-instance or enterprise-scale ServiceNow deployments.
- Bachelor’s degree in Computer Science, Engineering, Information Systems, or equivalent experience.
What You'll Get
A competitive salary of £58,000 - £62,000 dependent on experience and capabilityAs well as your base salary, NESO's core benefits are the essential perks and advantages that form part of your employee package. - You will receive a bonus based on company performance- 26 days annual leave as standard - A competitive contributory pension scheme where we will double match your contribution to a maximum company contribution of 12%. - Annual Enrollment to NESO Savings Plan, when you save between £20- £500 a month from your take-home pay, we will pay a 50% matching contribution.
Benefits
NESO's flexible benefits programme provides you with more flexibility around your helath, lifestyle and protection benefits, here's just a few available:
- Flexible Bank Holidays & Holiday Trading
- Additional Birthday Day Off
- Cycle to Work Scheme, Retail & Gym Discounts
- Private Medical Insurance, Critical Illness Insurance & Personal Accident Insurance
This role closes at 23:59, on the date displayed at the top of this advert, however we encourage candidates to submit their application as early as possible and not wait until the published closing date as this can vary.
Research shows that some people may hesitate to apply unless they meet every single requirement. At NESO, we believe potential comes in many forms and we're committed to a fair, inclusive recruitment
We're committed to building a workforce that represents the communities we serve, and a working environment in which each individual feels valued, respected, fairly treated, and able to reach their full potential. If this role sparks your interest but you're not sure you tick every box, we still want to hear from you. process where everyone has the opportunity to shoe their talents. We celebrate the difference people can bring into our organisation, and welcome and encourage applicants with diverse experiences and backgrounds.