Senior Tech Lead – UK NEW

Horizontal Digital
Senior Technical Lead – UK

We are looking for an experienced Senior Tech Lead with deep expertise in Sitecore and a forward thinking approach to AI enabled delivery. In this role, you will architect and lead the technical delivery of enterprise scale digital experience platforms, embed AI tooling across the development lifecycle, and mentor a team of engineers to do their best work.

Technical Leadership & Architecture

• Lead end to end technical architecture and delivery of Sitecore based digital experience platforms (XM Cloud, Sitecore AI, XP, XM).
• Define and own technical standards, code quality practices, and architectural patterns across project teams.
• Conduct solution design workshops and translate business requirements into scalable, maintainable technical blueprints.
• Oversee integrations with third party platforms including CRMs, CDPs, DAMs, search engines, and marketing automation tools.
• Perform and guide technical code reviews, ensuring adherence to best practices and Sitecore conventions.
• Provide high level and detailed technical solution estimates.
• Review and consult with stakeholders on SOWs.
• Review briefs, add questions, and refine technical requirements.
• Deliver all technical documentation required during discovery.

Project Delivery & Estimation

• Contribute to pre sales and estimation activities, providing technically accurate and commercially grounded effort estimates.
• Identify and flag technical risks early, including gaps in client provided inputs that may impact delivery timelines.
• Partner with Project Managers and Solution Architects to ensure estimates remain aligned through proposal, SOW, and discovery phases.
• Drive re estimation processes when scope or assumptions materially change, with clear stakeholder communication.

Team & Stakeholder Management

• Lead, mentor, and grow a team of Sitecore developers, fostering a culture of technical excellence and continuous learning.
• Collaborate with cross functional teams-UX, strategy, data, and QA-to ensure technical decisions support broader project goals.
• Act as the primary technical point of contact for clients, presenting solutions clearly and building trust through expertise.
• Facilitate knowledge transfer and ensure delivery decisions are well documented and accessible to the wider team.

Road map and Project Planning

• Lead and define technology approach and tool set.
• Facilitate environment setup and configuration efforts in coordination with other disciplines.
• Brainstorm and present ideas and possible solutions, driving innovation.
• Develop Sitecore AI roadmap.
• Facilitate communication with Delivery Lead and Program Manager.
• Deliver all technical documentation required during planning.
• Identify risks and important milestones.
• Involve with Delivery Lead, Dev Director, and Client Partner on strategic account and delivery direction.

Sitecore Expertise

• 10+ years of hands on Sitecore development experience across Sitecore AI, XM Cloud, XP, and/or XM.
• 3-5 years of experience leading design and implementation of digital technology solutions using Agile/Scrum methodologies.
• Strong proficiency in Sitecore development patterns: JSS, headless/SXA, serialization (Unicorn / SCS), and multisite configurations.
• Experience with Sitecore CDP, Personalize, Search, Content Hub, Send, or other Sitecore composable DXP products.
• Solid understanding of Sitecore licensing, deployment architecture, and cloud hosting (Azure / AWS).
• Familiarity with Vercel, Netlify, Next.js, and React in the context of Sitecore headless delivery.

AI & Modern Development

• Demonstrated experience integrating AI coding assistants (GitHub Copilot, Cursor, or similar) into a professional development workflow.
• Understanding of LLM capabilities and limitations as applied to code generation, documentation, and test coverage.
• Ability to design structured, AI readable inputs (design tokens, content schemas, component specs) that enable automation.
• Experience with prompt engineering or building lightweight AI agents or automation pipelines is a strong plus.

Core Technical Skills

• .NET / C# – solid backend development fundamentals.
• JavaScript / TypeScript, React or Next.js for headless front end delivery.
• RESTful and GraphQL API design and integration.
• CI/CD pipeline setup and management (Azure DevOps, GitHub Actions).
• Performance optimisation, accessibility standards (WCAG 2.1), and SEO best practices.
• Agile / Scrum delivery experience in cross functional teams.

Add Ons

• You are Sitecore MVP and actively participate in the Sitecore community.
• You enjoy being in front of the client and have professional services experience.
• You are skilled at refining and implementing Sitecore solutions.
• Experience contributing to or reviewing AI influenced project estimates and delivery models.

Our UK Benefits include

• 22 days holiday
• 2 floating holiday days
• 2 volunteering days
• Defined contribution pension scheme
• Flexibility + remote working