Senior ServiceNow Developer - SC Clearance Required

At IBM Consulting UK FutureNow, you’ll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors. You’ll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and deliver solutions that create real business impact. From day one, you’ll work on meaningful, high profile programmes that stretch your skills and accelerate your growth. We invest heavily in you—supporting continuous learning, in demand skills development, and long term career progression. You’ll thrive in a flexible, inclusive environment that values curiosity, encourages reinvention, and recognises what makes you unique. We offer: Tools and policies to support your work-life balance from flexible working approaches, sabbatical programs, paid paternity leave, maternity leave and an innovative maternity returners scheme More traditional benefits, such as 25 days holiday (in addition to public holidays), private medical, dental & optical cover, online shopping discounts, an Employee Assistance Program, life assurance and a group pension plan through salary sacrifice. As a Senior ServiceNow Developer at IBM, you will provide technical expertise across complex UK public-sector ServiceNow programmes, designing and developing secure, scalable and maintainable solutions. You will work closely with architects, consultants, clients and delivery teams to translate requirements into high-quality ServiceNow solutions aligned with platform best practice and enterprise standards. You will take ownership of development activities across the ServiceNow platform, providing technical leadership, supporting complex implementations and ensuring solutions are robust, upgrade-safe and fit for purpose. Key Responsibilities Design, develop and configure ServiceNow solutions across applications, workflows, business rules, client scripts, UI policies, Script Includes and Flow Designer. Develop robust server-side and client-side JavaScript to meet complex business and technical requirements. Design and implement integrations using REST, SOAP, IntegrationHub and other ServiceNow integration technologies. Develop and maintain custom applications, scoped applications, data models, APIs and reusable components. Translate functional and technical requirements into scalable, maintainable and upgrade-safe solutions. Apply ServiceNow development best practices, coding standards and a configuration-first approach, minimising unnecessary customisation. Perform unit testing, debugging, troubleshooting and performance optimisation across ServiceNow solutions. Support deployment activities using appropriate ServiceNow development and release processes, including update sets and source control where applicable. Work closely with architects and technical leads to ensure solutions align with enterprise architecture, security and platform standards. Provide technical input into solution design, technical specifications, estimates and implementation approaches. Support Agile delivery through sprint planning, backlog refinement, development, testing, code reviews and retrospectives. Conduct code reviews and provide technical guidance and mentoring to junior ServiceNow developers. Maintain high-quality technical documentation and support knowledge transfer across development and support teams. Contribute to platform upgrades, technical debt reduction, automation and continuous improvement. Ensure development activities comply with IBM, client and UK public-sector security, governance and compliance requirements. Maintain and comply with UK SC Security Clearance requirements when working on sensitive public-sector programmes. Proven experience as a Senior ServiceNow Developer delivering complex implementations and enhancements. Strong hands-on JavaScript development across Business Rules, Client Scripts, Script Includes, UI Actions, UI Policies and ACLs. Experience with Flow Designer, Workflow, IntegrationHub and ServiceNow automation. Strong experience developing REST/SOAP integrations, APIs and custom applications. Good understanding of ServiceNow platform architecture, data models, security and development best practices. Experience with Update Sets, Source Control, Automated Test Framework (ATF) and ServiceNow deployment practices. Strong troubleshooting, debugging and performance optimisation skills. Experience delivering upgrade-safe, configuration-first solutions with minimal customisation. Experience working in Agile/DevOps environments, including estimation, code reviews, testing and continuous delivery. Ability to translate technical and functional requirements into scalable, maintainable solutions. Strong communication skills and experience working with architects, consultants and client stakeholders. Experience mentoring developers and providing technical leadership. Understanding of UK public-sector security, governance and compliance requirements. UK SC Security Clearance or eligibility to obtain and maintain clearance. This role is subject to pre-employment screening in line with the UK Government’s Baseline Personnel Security Standard (BPSS). An additional range of Personal Security Controls referred to as National Security Vetting (NVS) may apply, this could include meeting the eligibility requirements for The Security Check (SC) or Developed Vetting (DV). Experience integrating ServiceNow with external systems, using REST/SOAP, IntegrationHub and out-of-the-box integration capabilities. Experience developing and optimising Business Rules, Script Includes, Client Scripts, UI Actions and Flow Designer solutions. Experience with custom/scoped application development, data modelling, APIs and reusable components. Experience optimising workflows, dashboards, reports and platform performance using ServiceNow best practices. Experience supporting post-go-live enhancements, upgrades and technical debt reduction across medium to high-complexity environments. Understanding of ATF, source control, deployment practices and upgrade-safe development. Experience with JavaScript debugging, troubleshooting and code optimisation. Ability to identify opportunities for automation, platform optimisation and continuous improvement. Desirable Certifications ServiceNow Certified System Administrator (CSA) ServiceNow Certified Application Developer (CAD) ServiceNow Certified Implementation Specialist (CIS) ServiceNow Certified Application Specialist (CAS) ServiceNow Certified Technical Architect (CTA)