.Net Developer -Manchester

Altran; Manchester; Hybrid; GBP 45,000 - 65,000; Full time

Job summary

Capgemini is seeking a Full Stack .Net Developer in Manchester to build scalable enterprise solutions. You will design and implement microservices, REST/gRPC APIs, and messaging patterns using Azure Service Bus, Kafka, and RabbitMQ.

The role emphasizes secure API gateways, async programming, and CI/CD within Agile teams. You will collaborate with architects and engineers to deliver high-quality software, apply security best practices, and leverage AI-assisted development to boost productivity

Qualifications

• Strong experience with C#, .NET, ASP.NET Core and enterprise application development.
• Hands-on experience designing microservices and distributed systems with REST/gRPC.
• Experience with messaging technologies (Azure Service Bus, Kafka, RabbitMQ) and API Gateway implementation.

Responsibilities

• Design, develop, and maintain scalable, secure applications using C#, .NET, and ASP.NET Core.
• Build microservices and REST/gRPC APIs; integrate via messaging patterns.
• Configure secure API access and gateway solutions; implement resiliency and observability.

Skills

C#

.NET

ASP.NET Core

Microservices

API Gateway

Async programming

OAuth 2.0

JWT

OpenID Connect

Azure Key Vault

Unit testing

CI/CD

Agile

AI-assisted development

Tools

Azure Service Bus

Kafka

RabbitMQ

API Gateway

Job description

# .Net Developer -ManchesterManchesterApply for this job* Permanent* Experienced Professionals* Software Engineering* ID 561229-en\\_GB**Job Title: .Net Developer****Location:** **Manchester****About the Job you are considering:**Join Capgemini’s Cloud & Custom Applications (C&CΑ) practice, where we help clients transform business outcomes through modern application engineering, intelligent automation, and AI-enabled innovation. Guided by our vision to Consult with Purpose. Continuously Evolve. Architect Tomorrow., we are looking for a Full Stack Developer who can build scalable digital solutions while embracing emerging AI capabilities. You will work closely with multidisciplinary teams to deliver high-quality customer outcomes, contribute to a future-ready workforce, and support the adoption of AI-driven approaches that enhance productivity, innovation, and business value.**Hybrid working:**The places that you work from day to day will vary according to your role, your needs, and those of the business; it will be a blend of Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time.**Key Responsibilities:*** Design, develop, and maintain scalable, secure, and high-quality applications using C#, .NET, and ASP.NET Core.* Build Microservices-based solutions, REST APIs, and service integrations using synchronous, asynchronous, and event-driven communication patterns.* Implement and support messaging solutions using Azure Service Bus, Kafka, RabbitMQ, or similar technologies.* Configure and manage API Gateway solutions, ensuring secure, reliable, and governed API access.* Develop resilient distributed systems using fault-tolerance patterns such as Retry, Circuit Breaker, caching, and Dead Letter Queue handling.* Apply security best practices including OAuth 2.0, JWT, OpenID Connect, SSL/TLS, and secret management solutions.* Collaborate with architects, engineers, and business stakeholders to deliver enterprise solutions aligned with business objectives.* Maintain high engineering standards through unit testing, code reviews, CI/CD practices, and continuous improvement.* Troubleshoot and resolve complex production issues while optimizing application, API, database, and messaging performance.* Leverage AI-assisted development tools and practices to improve productivity, quality, and innovation.**Required Skills:*** Strong experience with C#, .NET, ASP.NET Core, and enterprise application development.* Hands-on experience designing and implementing Microservices, distributed systems, and service-to-service communication using REST, gRPC, and messaging patterns.* Experience with messaging technologies such as Azure Service Bus, Kafka, RabbitMQ, or similar platforms.* Strong understanding of API Gateway implementation, Dependency Injection (DI), asynchronous programming, and concurrent application design.* Knowledge of OAuth 2.0, JWT, OpenID Connect, SSL/TLS, Azure Key Vault (or similar), and secure application development practices.* Experience implementing resiliency, caching, logging, monitoring, and observability solutions in distributed environments.* Expertise in SQL, database design, performance tuning, and data management.* Experience with unit testing frameworks (xUnit, NUnit, MSTest) and applying Clean Architecture, SOLID principles, and modern design patterns.* Experience working within Agile delivery teams and the full software development lifecycle.* Strong analytical, problem-solving, communication, stakeholder management, and AI-assisted development skills.* Good to have : Angular**Primary Focus:** Microservices, API Gateway, Messaging, Security, Distributed Systems, Dependency Injection, Async Programming, Testing, Troubleshooting, and Performance Optimization.**We are a Disability Confident Employer:**Capgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government’s Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who:* Declare they have a disability, and* Meet the minimum essential criteria for the role.Please opt in during the application process.**Make It Real (what does it mean for you):*** You’d be joining an accredited Great Place to work for Wellbeing in 2024. Employee wellbeing is vitally important to us as an organisation. We see a healthy and happy workforce a critical component for us to achieve our organisational ambitions. To help support wellbeing we have trained ‘Mental Health Champions’ across each of our business areas, and we have invested in wellbeing apps such as Thrive and Peppy.* You will be empowered to explore, innovate, and progress. You will benefit from Capgemini’s ‘learning for life’ mindset, meaning you will have countless training and development opportunities from thinktanks to hackathons, and access to 250,000 courses with numerous external certifications from AWS, Microsoft, Harvard Manage Mentor, Cybersecurity qualifications and much more.* You will be joining one of the World’s Most Ethical Companies, as recognised by Ethisphere for 13 consecutive years. We live our values by making ethical business choices every day. Working ethically is at the centre of our culture at Capgemini, meaning you will be helping to create a future we can all be proud of.**Why you should consider Capgemini:**Growing clients’ businesses while building a more sustainable, more inclusive future is a tough ask. When you join Capgemini, you’ll join a thriving company and become part of a collective of free-thinkers, entrepreneurs and industry experts. We find new ways technology can help us reimagine what’s possible. It’s why, together, we seek out opportunities that will transform the world’s leading businesses, and it’s how you’ll gain the experiences and connections you need to shape your future. By learning from each other every day, sharing knowledge, and always pushing yourself to do better, you’ll build the skills you want. You’ll use your skills to help our clients leverage technology to innovate and grow their business. So, it might not always be easy, but making the world a better place rarely is.**About Capgemini:**Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2024 global revenues of €22.1 billion. Make it real | www.capgemini.com