Senior .NET Developer – Hybrid, Microservices & AI Tools

Capgemini; Manchester; Hybrid; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Wellbeing programs

Learning & development opportunities

Job summary

Capgemini's Financial Services unit in the UK seeks an experienced .NET Developer to design, build, and maintain scalable enterprise applications using C#, .NET, and ASP.NET Core. You will work across microservices, APIs, and messaging with Azure, Kafka, and RabbitMQ in a hybrid model blending Capgemini offices, client sites, and home-based work.

You’ll collaborate with architects and business stakeholders to deliver high-quality solutions, apply CI/CD practices, and contribute to an inclusive,

Qualifications

• Design, develop, and maintain scalable apps with C#, .NET, and ASP.NET Core.
• Design and implement microservices, distributed systems, and service-to-service communication.
• Use messaging technologies such as Azure Service Bus, Kafka, RabbitMQ.
• Secure APIs with OAuth 2.0, JWT, OpenID Connect and secret management.
• Experience with resiliency, caching, logging, monitoring in distributed environments.
• Strong SQL, data management, and database performance tuning.
• Experience with unit testing and modern design patterns in Agile teams.

Responsibilities

• Design, develop, and maintain scalable, secure, high-quality applications.
• Build microservices, REST APIs, and service integrations.
• Configure and manage API Gateway solutions and secure access.
• Develop resilient distributed systems with fault-tolerance patterns.
• Collaborate with architects, engineers, and stakeholders to deliver enterprise solutions.
• Maintain engineering standards with unit tests, CI/CD, and continuous improvement.
• Troubleshoot production issues and optimize performance.
• Leverage AI-assisted development tools to improve productivity.

Skills

C#/.NET/ASP.NET Core

Microservices & distributed systems

Azure Service Bus / Kafka / RabbitMQ

API gateway security (OAuth2, JWT)

SQL & database design

Unit testing / CI-CD / Clean Arch

Agile delivery

Angular

Tools

Azure Service Bus

Kafka

RabbitMQ

API Gateway

Azure Key Vault

CI/CD pipelines

Job description

Capgemini's Financial Services unit in the UK seeks an experienced .NET Developer to design, build, and maintain scalable enterprise applications using C#, .NET, and ASP.NET Core. You will work across microservices, APIs, and messaging with Azure, Kafka, and RabbitMQ in a hybrid model blending Capgemini offices, client sites, and home-based work.

You’ll collaborate with architects and business stakeholders to deliver high-quality solutions, apply CI/CD practices, and contribute to an inclusive,