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ServiceNow Senior Developer

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ServiceNow Senior Developer

Department: IT & Business Systems

Employment Type: Permanent

Location: Remote, UK

Description

  • The ServiceNow Senior Developer is responsible for the ongoing development and administration of Nasstar's ServiceNow enterprise application. The Senior Developer will ensure that functionality aligns with business objectives, delivers value to both internal and external stakeholders, and remains scalable, secure, and efficient. The position requires expertise in developing ServiceNow across the CSM, ITSM, SPM, and ITOM stack.
  • ServiceNow is a mission-critical application, scalable, and secure, enabling collaboration across departments and supporting key organizational goals. The Developer will contribute to regular sprints, ensure good governance, best practice and alignment of all development to good technical architecture. The Senior Developer will also support releases and regular maintenance.
  • The Senior Developer will report into the Head of ServiceNow Enterprise Applications.

Key Responsibilities

Platform Ownership and Development
• Support the configuration, customisation, and optimisation of ServiceNow (CSM, ITSM, SMP, ITOM, AI Assist).
• Work on regular development Sprints delivering best practice functionality whilst avoiding unnecessary customisation and reduced technical debt.
• Ensure development is compliant with regulations (e.g., GDPR) and meets performance benchmarks.
• Support platform upgrades, version control, and feature adoption in collaboration with architects and developers.
• Contribute to the creation and planning of sprints, working closely with the wider team.
• Provide governance and acceptance criteria for user stories and enhancements. Ensure the quality of development is of the highest standard.
• Support API and integration requirements.
• Support the adoption of AI assist and further AI initiatives, aligning with the wider business AI Innovation group.

Team Contribution
• Work closely with the development team and Head of ServiceNow
• Contribute to the wider team of Architects, Senior Developers, and
Administrators responsible for the platform.
• Work closely with the wider IT, Business Systems and Data teams

Stakeholder Collaboration
• Engage with wider Business and team leaders to gather requirements and ensure the platform meets their evolving needs.
• Contribute on external-facing innovations (e.g., customer portals).
• Support the User Forum and wider ServiceNow champions across the business.

Skills, Knowledge and Expertise

  • ServiceNow CSA (certified system administrator)
  • ITIL experience
  • Troubleshooting and analytical skills.
  • Ability to work independently, with some guidance, and as part of a team.
  • 3+ years of ServiceNow experience
  • You will have excellent problem-solving skills and will be able to solve technical problems requiring strict attention to detail.
  • Your effective communication skills allow you to build internal and external relationships and solve challenges. You will be adept at communicating with various technical and non-technical people.
  • Experience in Agile methodologies. Certified Agile Practitioner an advantage

Benefits

At Nasstar, we know the importance of looking after our employees - after all, it's the team that underpins our business!

In addition to a competitive salary, supportive teams, and a real opportunity to progress in your career with a forward-thinking organisation, our benefits package includes:

  • 25 days' holiday (excluding bank holidays) + Your Birthday Off
  • Flexible working - it's important to maintain a work/life balance, as such, we will consider any written request for flexible working
  • Virtual working - we practice what we preach and empower our people to work remotely
  • Top tech - Leading services and solutions aren't just for our clients; we supply best-of-breed software and hardware for all our staff too
  • 4x annual salary life assurance
  • Health cash plan
  • Retail discounts and other perks from major brands

ServiceNow Senior Developer

Nasstar
London, UK
Full-Time

Published on 23/01/2026

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