The Senior Software Developer will design, build, and maintain applications on the ServiceNow platform, focusing on full-stack JavaScript development with an emphasis on security and scalability.
This role is a Full Stack JavaScript Developer is responsible for designing, building, and maintaining secure, scalable, and highquality applications that extend and enhance our ITSM platform (ServiceNow).
Operating within a cybersecurity‑focused Managed Services environment, this role requires strong full‑stack JavaScript expertise across backend, frontend, and API development, combined with a security‑first mindset. The developer will take ownership of end‑to‑end solutions—from requirements and design through implementation, testing, and support—working closely with ServiceNow administrators, engineers, and business stakeholders.
Key Responsibilities
- Application Development: Design and develop custom JavaScript applications within our ServiceNow platform to automate business processes and resolve complex operational challenges.
- Requirements Gathering: Collaborate with stakeholders across the organization to understand their needs and translate them into technical solutions within ServiceNow.
- Security & Compliance: Implement secure coding practices aligned to SSDLC principles, including data protection, access control, and auditability.
- Customization and Integration: Customize existing applications and integrate with external systems and APIs to enhance functionality and user experience.
- Quality Assurance: Conduct thorough testing of developed applications and solutions. Ensure compliance with coding standards and best practices.
- Continuous Improvement: Identify technical debt and opportunities to improve platform reliability, developer experience, and delivery velocity.
- Documentation and Support: Create comprehensive documentation for developed applications and provide ongoing support and enhancements based on user feedback.
- Collaboration: Work closely with the System Administrators and other IT team members to ensure seamless implementation and operation of developed applications.
Skills, Knowledge & Expertise
- Very strong knowledge of JavaScript, NodeJS and the React framework
- Experience with modern JavaScript tooling (ES6+, npm, build pipelines)
- Experience designing and consuming APIs in production environments
- Ability to write clean, maintainable, well‑documented code
- Understanding of Secure authentication & authorisation techniques
- Strong knowledge of both Server and Client Side JavaScript development
- General programming skills and understanding of secure software development lifecycle (SSDLC)
- Excellent communication and teamwork abilities
- Ability to manage multiple projects simultaneously and meet deadlines
- Creative thinking and problem-solving skills
Desirable Requirements
- Bachelor’s degree in computer science, information systems, or related field
- Significant demonstrable experience specific to Full Stack JavaScript development.
- Other relevant certifications.
- Experience working in a security‑focused environment
- Knowledge of the ServiceNow Ecosystem is not a requirement, but would be useful.
Job Benefits
- Flexible Working: Balance your work and personal life with our flexible working options.
- Generous Holiday Allowance: Enjoy 25 days of holiday, plus bank holidays, with the option to buy up to 5 additional days of annual leave.
- Medicash & Critical Illness Scheme
- Financial & Investment Benefits: Enjoy peace of mind with our Pension, Life Assurance, and Share Save Scheme.
- Community & Volunteering Programmes: Make a difference in your community with our volunteering opportunities.
- Green Car Scheme: Drive green and save money with our eco-friendly car scheme.
- Cycle Scheme: Stay fit and healthy with our cycle-to-work scheme.
- Special Time Off: Take time off for those big moments in life, like getting married/entering into a civil partnership, becoming a grandparent, and welcoming home a new pet.
- Family Planning: Benefit from our generous maternity and paternity leave, as well as time off and support for those undergoing fertility treatments.
About
We assess, develop and manage cyber threats across our increasingly connected society. We advise global technology, manufacturers, financial institutions, critical national infrastructure providers, retailers and governments on the best way to keep businesses, software and personal data safe.With our knowledge, experience and global footprint, we are best placed to help businesses identify, assess, mitigate & respond to the risks they face.We are passionate about making the Internet safer and revolutionising the way in which organisations think about cyber security.Headquartered in Manchester, UK, with over 35 offices across the world, NCC Group employs more than 2,000 people and is a trusted advisor to 15,000 clients worldwide.
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