Lead Cloud Application Engineer

Job Type: Permanent, Full Time

Location: Hounslow, Greater London, UK/Hybrid

Advert Start Date: 30th September 2026

Advert Closing Date: 29th October 2026

Annual Salary: £38,000 to £45,000 Depending on experience

Hours: 37.5 Hours per Week (Monday to Friday)

Job Reference Number: MIS30092026

Job Description:

We are seeking an experienced Lead Platform Engineer (.NET, AWS & Azure) with over 10 years of professional software engineering experience to design, develop and lead enterprise-scale cloud platforms and applications.

The successful candidate will have strong hands-on expertise in C#, .NET Core/.NET 6/7/8, ASP.NET Core, microservices and distributed systems, together with extensive experience designing and delivering cloud-native solutions across AWS and Microsoft Azure.

The role requires technical leadership across application modernisation, cloud architecture, platform engineering, DevOps and production operations. The successful candidate will collaborate with architects, developers, DevOps engineers, QA teams, project managers and business stakeholders to deliver secure, scalable, resilient and high-performing solutions.

Job Roles and Responsibilities:

• Design, develop and maintain enterprise applications using Java/J2EE and Spring Boot.
• Develop scalable backend services using Spring Framework, Spring MVC and Microservices architecture.
• Design, develop and maintain enterprise-grade applications and platform services using C#, .NET Core/.NET 6/7/8 and ASP.NET Core.
• Architect and implement microservices-based, event-driven and cloud-native distributed systems across AWS and Microsoft Azure.
• Develop secure, high-performance RESTful APIs and backend services using Clean Architecture, SOLID principles and Test-Driven Development (TDD).
• Design and deliver AWS solutions using Lambda, EC2, S3, IAM, CloudWatch, SQS, SNS, EventBridge and EKS.
• Design and deliver Azure solutions using App Service, Azure Functions, AKS, Service Bus, Key Vault, Azure Monitor and Microsoft Entra ID.
• Build and maintain serverless and containerised architectures that provide scalability, resilience, security and high availability.
• Implement asynchronous messaging, event-driven integration and resilience patterns including retries, dead-letter queues, idempotency and circuit breakers.
• Lead application modernisation and monolith-to-microservices migration initiatives.
• Design and maintain CI/CD pipelines using Azure DevOps, GitHub Actions, Jenkins or GitLab CI.
• Manage Docker and Kubernetes deployments across Amazon EKS and Azure Kubernetes Service (AKS).
• Implement Infrastructure as Code and automated cloud provisioning using Terraform and native AWS/Azure tooling.
• Implement observability, logging, monitoring and distributed tracing using AWS CloudWatch, Azure Monitor and Application Insights.
• Lead production support, incident management, root cause analysis (RCA) and continuous service improvement.
• Optimise application and database performance using SQL Server and PostgreSQL.
• Provide technical leadership through architecture guidance, code reviews, mentoring and engineering best practices.
• Work within Agile/Scrum environments and contribute to planning, estimation, technical design and delivery governance.

Required Skills and Experience:

• Minimum 10+ years of professional software engineering experience, including substantial hands-on .NET and cloud platform development experience.
• Bachelor’s degree in Computer Science, Engineering or a related discipline, or equivalent relevant professional experience.
• AWS and/or Microsoft Azure professional certification is desirable.
• Experience with Angular or React and modern JavaScript/TypeScript development is advantageous.
• Experience with security testing, performance testing, resilience engineering and enterprise cloud governance is advantageous.
• Strong expertise in C#, .NET Core/.NET 6/7/8 and ASP.NET Core.
• Strong experience designing microservices, distributed systems and event-driven architectures.
• Strong hands-on AWS experience including Lambda, EC2, S3, IAM, CloudWatch, SQS, SNS, EventBridge and EKS.
• Strong hands-on Microsoft Azure experience including App Service, Azure Functions, AKS, Service Bus, Key Vault, Azure Monitor and Microsoft Entra ID.
• Experience designing and supporting multi-cloud or hybrid-cloud solutions using AWS and Azure.
• Strong knowledge of REST APIs, authentication, authorisation, application security and cloud security principles.
• Strong experience with Docker, Kubernetes, CI/CD and DevOps practices.
• Experience with Infrastructure as Code using Terraform and/or native AWS/Azure tooling.
• Extensive SQL Server and PostgreSQL experience, including performance tuning and database optimisation.
• Strong proficiency in Entity Framework Core, ADO.NET and modern data-access practices.
• Experience with unit testing, TDD and automated software quality practices.
• Strong understanding of observability, monitoring, distributed tracing and production support.
• Proven technical leadership, mentoring, stakeholder management and problem-solving capabilities.

Pay: £38,000.00-£45,000.00 per year

Benefits:

• Free parking
• On-site parking

Education:

• Bachelor's (required)

Experience:

• professional software engineering: 10 years (required)

Work Location: Hybrid remote in Hounslow TW4 6JQ