Azure Architect/ Lead Developer

Azure Architect/Lead Developer

Onsite, London based, On site 3 days in London.

6months + with possible extension

Financial Services – Card Processing / Payments

Senior Developer / Architect with proven experience designing and delivering large-scale Azure-based systems operating at very high transaction volumes (millions per day). This role will be client-facing and strategic, with responsibility not only for technical delivery but also for uplifting internal engineering capability. This is not a mid-level hands-on dev role. They need someone who has owned architecture decisions, understands distributed systems in production, and can explain those decisions clearly.

Key Responsibilities

• Architect, design, and evolve high-throughput, event-driven Azure platforms
• Work within asynchronous, distributed architectures supporting large transaction volumes
• Provide technical leadership across .NET-based applications
• Act as a senior liaison point with the client (technical credibility is essential)
• Mentor, train, and upskill internal engineering teams
• Support ongoing platform evolution and potential future opportunities

Experience

• Senior-level experience architecting Azure-based systems at scale
• Demonstrable experience with event-driven, asynchronous architectures
• Strong background in .NET application development
• Experience in financial services, payments, card processing, or similarly regulated / high-volume environments
• Ability to communicate clearly with both technical and non-technical stakeholders

Desirable

• Hands-on experience with Cosmos DB
• Exposure to data cubes / analytical data models
• Experience migrating platforms from AWS to Azure
• Prior involvement in long-running transformation or migration programmes
• Strong communicator who enjoys coaching and developing others
• Pragmatic and delivery-focused
• Comfortable working on-site with clients and internal teams