Lead Enterprise Architect

Job Title: Lead Enterprise Architect Location: UK (Hybrid, once per week onsite - London) Contract: Initial 6 Month Contract Rate: Circa £700 Per Day (IR35 Status TBC) I am working with one of our longstanding clients who have a fantastic reputation as a leading technology and services provider. Currently, they are looking for an experienced Lead Enterprise Architect to play a crucial role in the design and implementation of a business critical and high priority project that will transform and modernise their primary revenue source. What you'll do 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. Skills & Experience required 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.ECS Recruitment Group Ltd is acting as an Employment Business in relation to this vacancy