Integration Technical Lead – .NET, C# & Azure

Integration Technical Lead - .NET, C# & Azure

Location:

London

Working Pattern: HYBRID - 2 days per week onsite

ARCA Consulting is proud to be partnering with a leading UK ecommerce business that is continuing to evolve its technology landscape and is looking for an experienced Integration Technical Lead with hands on .Net, C# expertise to play a key role in shaping its integration capability.

This is an exciting opportunity to join a high-profile, digitally driven organisation and combine hands on technical expertise with technical leadership, working across Engineering, Product and Architecture to build scalable, secure and resilient integration services.

You will have genuine influence over technical direction, architecture and delivery, while remaining close to the technology and supporting a talented engineering team.

Ecommerce or retail experience would be advantageous, but it isn't essential. We're interested in candidates who have worked in complex, high-volume or customer-focused technology environments where reliability, scalability and integration are critical.

• Owning and shaping the technical roadmap for integration services, aligned with wider Engineering and Architecture strategy.
• Providing hands-on technical leadership across C#/.NET and Microsoft Azure.
• Designing and delivering robust integration solutions, including APIs, messaging, event-driven architectures and distributed systems.
• Making pragmatic architectural and technical decisions within established architectural guardrails.
• Working closely with the Engineering Manager and Integration Architect on delivery, prioritisation and ways of working.
• Helping the team understand technical complexity, estimate effort and plan effectively.
• Removing technical blockers that could impact delivery.
• Proactively identifying and managing technical debt across integration platforms.
• Designing scalable and resilient cloud-native solutions using Azure services
• Promoting high engineering standards through coding standards, code reviews, modular design and effective documentation.
• Mentoring engineers and supporting their technical development, particularly around integration concepts and best practice.
• Working collaboratively across Product, Engineering and Architecture to help build a high-performing team.

• Strong hands-on experience with C# and .NET (Core/6+), particularly building integration services and APIs.
• Proven experience working with Microsoft Azure
• Experience designing and delivering integration solutions and distributed systems, including REST APIs, microservices and event-driven architectures.
• A strong understanding of cloud-native architecture, scalability and performance optimisation.
• Experience with Dev Ops, CI/CD and Infrastructure as Code, with ARM, Bicep or Terraform being advantageous.
• A genuine interest in mentoring engineers and helping teams become more effective.