Full Stack Developer

Moonshot Partners is hiring a Contract Full Stack Developer to support a major digital transformation for a UK public sector membership organization. You’ll help maintain a legacy Sitecore platform while building a modern headless stack with Storyblok, Next.js, and React. Initial priority is auditing and implementing robust analytics/tracking (GTM/GA4), followed by integrations (SSO, Stripe, Algolia), APIs, and ongoing enhancements. This fully-remote UK-hours role partners with a Product Owner and external vendors during migration, then helps establish strong in-house engineering practices.

• Audit, clean, and standardize Google Tag Manager (client/server-side) and ensure GA4 data accuracy
• Design and implement scalable tracking architecture and event schemas for Storyblok + Next.js
• Implement event tracking across the Next.js front end and maintain tracking parity during migration
• Support current Sitecore platform with minor features, bug fixes, and transitional logic updates
• Post-launch optimisation on the new platform: bug fixing, performance, accessibility, and API maintenance
• Design scalable Storyblok content models aligned with headless best practices
• Build and maintain integrations: SSO (OAuth/SAML/partner) and Partners
• Enhance personalisation and membership logic by tier, behaviour, and status
• Implement subscription renewals, upgrades, Stripe Billing logic, webhooks, and customer portal
• Support and enhance an existing PWA and contribute to new roadmap features
• Collaborate with Product Owner and external partners; help transition capabilities in-house
• Contribute to an API-driven architecture using .NET and Azure API layers

• 5+ years professional software development experience with production systems
• Hands‑on expertise with Google Tag Manager (client‑side and server‑side/Stape) and GA4
• Strong JavaScript skills with React and Next.js;
  Tailwind CSS experience
• Back-end/API development experience with .NET and Azure API layers
• Experience implementing authentication systems (e.g., Supabase) and SSO (OAuth/SAML)
• Headless CMS experience;
  Storyblok strongly preferred (Sitecore familiarity a plus)
• Payments and subscriptions experience with Stripe Billing; webhook implementation
• Experience with Algolia search; familiarity with GoCardless and Microsoft Dynamics (CRM) beneficial
• Understanding of personalisation strategies and data‑driven content segmentation
• Experience with PWAs and headless architectures is a plus
• Fluent English (written and spoken); excellent collaboration, ownership, and accountability
• Availability to work Monday–Friday, 9:00–5:00 UK time in a fully-remote setup