Principal NetSuite Developer – Barnard Castle – Hybrid – £75,000

Location: Barnard Castle, County Durham (Hybrid Working – 2 days per week in office)

Salary: Up to £75,000

Job Type: Permanent

About the role

We are recruiting for a long-established, seventh-generation family business in County Durham that is approaching NetSuite go-live after an 18-month implementation journey. As Principal NetSuite Developer you will act as design authority for customisation and integration, owning the architecture of complex work, leading on integrations with Celigo, and accelerating the existing development team's capability through mentoring and code review. This is a senior individual contributor role positioned parallel to the IT Manager on the technical track, with genuine influence over the platform's technical direction as they transition from a 26-year-old custom ERP system.

With a clear Phase 2 manufacturing roadmap ahead and a strong existing team to work with, this is an opportunity to shape the long-term technical estate during a significant business transformation. If you're a senior NetSuite technologist who gets satisfaction from levelling up a team and acting as the go-to escalation point, apply today.

Key Responsibilities

• Act as design authority for NetSuite customisation and integration: architectural decisions, technical standards, code review and design sign-off on non-trivial work
• Lead the design and build of the most complex SuiteScript work (Map/Reduce at scale, performance-critical Suitelets and RESTlets, advanced workflow logic) and act as escalation point for technical problems
• Own the integration architecture end-to-end using Celigo integrator.io: flow design patterns, error handling and recovery, monitoring strategy, onboarding of new endpoints
• Establish and maintain platform engineering disciplines: SuiteCloud Development Framework, source control, sandbox and release management, deployment pipelines, governance limit monitoring
• Mentor and upskill the existing development team through pairing, structured knowledge transfer, code review and technical coaching
• Partner with the IT Manager on platform roadmap, technical debt management and Phase 2 manufacturing technical design

What We're Looking For

• Substantial hands-on NetSuite SuiteScript development experience (4+ years, all major script types, demonstrable production track record)
• Deep working experience of Celigo integrator.io: flow architecture, error handling at scale, complex transformations
• Demonstrable design and architectural responsibility on a NetSuite implementation or estate — not solely build-to-spec experience
• Strong NetSuite data model fluency: saved searches, custom records, scripted vs. workflow trade-offs, governance and performance considerations
• Experience operating as a senior individual contributor: code review, mentoring, technical decision-making
• Comfortable as senior technical voice without being the line manager — a mentoring mindset and collaborative approach with the IT Manager and existing development team
• Manufacturing, distribution or food & beverage experience would be an advantage but is not essential

What's On Offer

• A competitive salary up to £75,000
• Genuine hybrid flexibility (minimum 2 days per week on site) with flexible working hours around core 8am–5pm pattern
• Structured training and career development including Celigo certification support
• Excellent benefits including life assurance (6x salary), pension scheme, Employee Assistance Programme, Holiday Purchase Scheme and Holiday Loyalty Reward Days
• Free parking, Cycle to Work Scheme, Tech Scheme, employee discounts and casual dress
• The opportunity to shape a newly implemented NetSuite platform during a once-in-a-generation ERP transformation

How to Apply

Please apply asap with your CV to be considered for this position. You can also get in touch with Roxy Begum on roxy@henleymorgan.com or 0207 096 0211.

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