SUMMARY:

We are looking for an experienced Senior .NET/AWS Cloud Migration Engineer to join a highly skilled engineering team migrating and modernising complex, business-critical services to AWS.

This is a hands-on engineering role for someone who combines a strong .NET software engineering background with current, practical AWS experience.

You will work across an existing service estate, understand applications and their dependencies, define migration approaches, and help move services safely into a modern, cloud-native AWS environment.

This is not simply a lift-and-shift project. The focus is on incremental modernisation, cloud-native engineering and safe production migration with minimal or zero downtime.

WHAT WILL YOU BE DOING:

As part of an agile software development team, you will:

• Assess existing .NET services, infrastructure, integrations, data stores and operational dependencies.
• Map service dependencies and identify the appropriate sequencing and approach for migration.
• Design and implement cloud-native solutions within AWS.
• Containerise and operate services using AWS ECS.
• Build and maintain infrastructure using Terraform and Infrastructure as Code (IaC).
• Work with event-driven and asynchronous architectures using technologies such as SNS, SQS, NServiceBus and RabbitMQ.
• Plan and execute incremental migration waves rather than relying on traditional lift-and-shift approaches.
• Design safe migration and cutover strategies for business-critical services.
• Implement approaches such as blue/green deployments, parallel running, progressive traffic switching and rollback strategies.
• Solve complex migration challenges involving shared databases, authentication, legacy dependencies and service-to-service integrations.
• Work closely with engineering teams and stakeholders to identify dependencies, risks and delivery priorities.
• Improve automation, observability, documentation and overall operational readiness as services move into AWS.

WHAT WE ARE LOOKING FOR:

• Strong professional experience developing and operating production systems using modern .NET.
• Recent, hands-on commercial experience with AWS.
• Direct experience migrating production applications or services into AWS.
• Strong practical experience with AWS ECS and containerised workloads.