Lead Software Engineer - .NET 8 | £600/day Outside IR35 | Manchester (Hybrid/Remote – 2x per week maximum onsite)Job OverviewWe’re looking for a Lead Engineer (Contract) to drive the development of scalable, secure, and high-performance cloud-native applications using .NET 8 and AWS. This is a hands‑on leadership role, ideal for someone who thrives in a microservices‑driven environment, mentors teams effectively, and brings deep technical expertise across design, architecture, and cloud platforms.Key ResponsibilitiesLead a development team, ensuring technical excellence and adherence to best practicesArchitect and build cloud‑native applications using .NET 8, AWS, Docker, and TerraformDesign and implement secure authentication and authorisation systems (OAuth, OIDC) using tools such as Okta, Auth0, Passport, or IdentityServerPromote and implement CI/CD, TDD, and DevOps methodologies to streamline deliveryCollaborate closely with architects, product managers, and stakeholders to shape technical strategySolve complex engineering challenges to enhance scalability, resilience, and performanceTechnical StackDatabases: DynamoDB, Aurora, DocumentDB (MongoDB experience a bonus)Auth/Identity: OAuth, OIDC, Okta, Auth0, Passport, IdentityServerDevOps & Infrastructure: Terraform, GitHub Actions, DockerEvent Systems: Kafka, AWS MSK, EventBridge, SNS/SQSFrontend: ReactMust HaveProven track record of integrating or building authentication and authorisation solutions (OAuth, OIDC)Experience with AWS (DynamoDB, ECS Fargate)Strong ASP.NET and C# development experienceExcellent software design skills (design patterns, application design for scalability and resilience)Good to HavePrevious software architecture experienceFamiliarity with observability tools (CloudWatch, Sentry, Splunk, New Relic)This is a fantastic opportunity to take ownership of a high‑impact project, lead a skilled engineering team, and shape modern, cloud‑first systems using the latest Microsoft and AWS technologies.Apply now for immediate consideration.Seniority levelNot ApplicableEmployment typeContractJob functionInformation Technology #J-18808-Ljbffr