Senior ServiceNow Developer at National Grid | Jobyssey

About us

At National Grid, our commitment to a cleaner, greener energy future is powered by the dedication and ingenuity of our people. Join our team as a Senior ServiceNow Developer and be a part of something bigger—where your unique skills and passions can make a real difference. Together, we are superpowered.

National Grid is hiring a Senior ServiceNow Developer on a permanent basis. This position is based in Warwick. This role operates under a hybrid working model. Hybrid work expectations are subject to business needs and company policy.

About the role

As Senior ServiceNow Developer, you'll be responsible for designing, building, and stabilizing enterprise-grade HRSD solutions that are secure, scalable, and aligned to platform standards. You'll work closely with HR stakeholders, technical teams, and delivery partners to translate business objectives into practical ServiceNow solutions, while enforcing engineering discipline and driving outcomes end-to-end. You'll engage with business stakeholders, leading working sessions, presenting solution options, and driving delivery outcomes. You'll influence decisions, align cross-functional teams, and ensure high-quality delivery across internal and vendor resources.

What you'll do

Lead end-to-end delivery of HRSD enhancements: design, build, test, deploy, and stabilize solutions in a global enterprise environment.
Own HRSD technical design and configuration quality, ensuring solutions follow secure SDLC practices and remain supportable over time.
Provide hands-on HRSD expertise with a strong focus on HR integrations and orchestration—particularly HR system integrations (e.g., SuccessFactors) that enable automation initiatives.
Define and enforce engineering standards (coding standards, architecture patterns, code/model review checklists) to prevent customization creep and ensure long-term maintainability.
Provide technical leadership to development teams: mentor developers, perform peer reviews, and establish quality gates to improve consistency and reduce rework.
Own and maintain integrations (APIs/web services, data mapping, integration standards) to ensure reliability, performance, and strong employee experience across connected systems.
Support platform reliability: monitor health/usage/compliance, perform security and performance audits, and drive remediation actions through to completion.
Partner with ServiceNow Support and internal teams on platform upgrades and patching (major version planning, regression strategy, and post-upgrade validation)
Lead vendor resources when assigned: provide direction, oversee technical execution, enforce quality standards, and ensure deliverables meet National Grid expectations.
Validate and triage new demands/change requests to ensure alignment with platform guardrails, design standards, and enterprise risk posture.
Lead the design and implementation of HRSD Lifecycle Events for Joiner/Mover/Leaver (JML) experiences (onboarding, internal transfers/role changes, and offboarding), ensuring a consistent and automated employee journey.
Configure and optimize lifecycle event structures (event definitions, activity sets/activities, stages, and assignment patterns) to coordinate work across HR, IT, Facilities, Payroll, and Security as needed.
Partner with HR and Identity stakeholders to ensure lifecycle event journeys are auditable, compliant, and measurable, with clear ownership, timelines, and exception handling.

About you

Bachelor’s degree in Computer Science or equivalent experience.
Strong hands-on ServiceNow development experience (JavaScript and ServiceNow scripting) with solid understanding of secure SDLC practices.
Strong HRSD domain capability and experience delivering HRSD solutions in an enterprise environment.
Experience delivering at least one end-to-end implementation in HRSD (and exposure to S2P is an advantage).
Preferred experience with Employee Center and Virtual Agent (where used in HR experiences).
Demonstrated experience designing and supporting integrations (REST/API), web services, data mapping) and troubleshooting integration performance and reliability.
Strong analytical skills: able to translate real-world business requirements into clear technical designs and actionable delivery plans.
Ability to balance business needs, cost, risk, and technology priorities to determine the best solution.java
Strong written and verbal communication skills, with the ability to influence stakeholders and drive alignment across IT and business leadership.
Proven ability to manage multiple priorities in a fast-paced environment and work effectively across multiple geographies.
Strong relationship building, facilitation, and stakeholder management skills.
Proven hands‑on experience configuring and supporting HRSD Lifecycle Events for employee transitions, including JML (onboarding, internal movement, offboarding), and driving automation across multiple departments.
Experience translating HR onboarding/movement/leaver requirements into lifecycle event activity design that improves employee experience and reduces manual handoffs.
Hands-on experience configuring lifecycle event components including Lifecycle Event definitions, Activity Sets, Activities, stage design, triggers/conditions, and exception handling for JML scenarios

Certifications

Certified ServiceNow System Administrator (CSA)
Certified ServiceNow HRSD Administrator
Certified Implementation Specialist (CIS) – HRSD

Preferred:

ServiceNow Application Developer / ServiceNow Developer certification

What you'll get

Competitive Salary, based on capability and experience
Bonus of up to 30% based on personal and company performance

Additional benefits:

A competitive contributory pension scheme where we will double match your contribution to a maximum company contribution of 12%
Flexible benefits such as a cycle scheme, share incentive plan, technology schemes
Access to apps such as digital GP service for round the clock access to GP video consultations and NHS repeat prescriptions, wellbeing app to support your health and fitness
Access to Work + Family Space, providing support and resources for work and family life, including paid emergency childcare and eldercare

More Information

The closing date for this vacancy is 9th October. However, we encourage candidates to submit their applications as early as possible and not to wait until the published closing date. National Grid’s recruitment periods can and may vary. We reserve the right to remove this advert or close it to further applications at any point during the recruitment process.

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We value diversity and are committed to creating an inclusive workplace for all. We welcome applications from all suitably qualified candidates – we make appointments purely on merit, assessed against objective selection criteria. We support flexible working and will make reasonable adjustments throughout the recruitment process should you have any physical or mental impairment which may affect your ability to participate in the process.

Please note that in most cases, National Grid is unable to offer sponsorship for employment under the UK points-based immigration system. As such, applicants must have the legal right to work in the UK without requiring sponsorship now or in the future under the UK points-based immigration system. However, in exceptional circumstances where there is a clear and demonstrable need for specialist skills that cannot be sourced from the local labour market, National Grid may consider offering sponsorship. All applications are welcome from candidates who meet these requirements, regardless of race, nationality, or ethnic origin.

Senior ServiceNow Developer

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