Salary: £18,240 - 19,500 per year Requirements: Proven track record of operating at Enterprise Architect level or a Principal/Lead Solution Architect ready to step up, with ownership of architecture across complex environments A strong track record designing end-to-end architecture for large, distributed systems Demonstrable experience of shaping and delivering technical strategy including defining target architecture and roadmaps Strong exposure to billing, revenue, or large-scale customer platforms Cloud-first mindset with strong AWS experience High level of experience in designing modern architectures using microservices, APIs, event-driven patterns, and serverless High level of understanding of data architecture, including data modelling and working across high-volume data environments Experience setting standards, governance and improving structure, consistency, and clear direction across multiple teams A proven track record of working with senior stakeholders and translating complex requirements into clear architectural decisions Commercial awareness and experience with vendor strategy and build vs buy decisions A background in large, complex organisations. Responsibilities: Full ownership of the enterprise architecture strategy for a large-scale transformation of customer, billing and revenue platforms Lead the move away from legacy systems into a modern, cloud-first environment that improves performance, scalability, and customer experience Define the target architecture and set a clear, deliverable roadmap from current state to future state across multiple platforms Drive architecture across core domains including billing, revenue management, customer platforms, and data Work closely with Engineering, Product, Data, and Delivery to ensure technology decisions align with commercial and operational goals Set the standards. Establish governance across cloud, data, identity, and emerging AI capabilities Own key technology decisions including vendor strategy and build vs buy across critical platforms Design platforms that operate at scale: High volume, high availability, and no room for failure Lead the shift towards platform-based architecture with clear ownership and long-term sustainability Turn complex business problems into clear, structured architectural direction Bring control without slowing things down. Balance governance, risk, and innovation across the estate Use proof of concepts to test ideas, challenge assumptions and introduce new capability. Technologies: AI AWS Architect Cloud Serverless microservices More: We are working with one of our longstanding clients, a leading technology and services provider known for its fantastic reputation. This contract will initially last for 6 months and is based in the UK with a hybrid work environment, requiring one day per week onsite in London. The Lead Enterprise Architect we are seeking will play a crucial role in transforming and modernising the primary revenue source for the company, offering a competitive rate of around £700 per day. Join our team and be part of a significant project that will drive innovation and excellence in the organizations architecture. last updated 18 week of 2026