Senior .NET & API Integration Engineer (London)

Penguin Random House UK; Greater London; Hybrid; GBP 67,000 - 81,000; Full time

Job summary

Penguin Random House UK is seeking an experienced Senior Software Developer to join our Technology team in London on a permanent basis. This hands-on role focuses on C# and .NET, APIs, microservices and cloud-based integration, with mentoring responsibilities for other developers.

You will design, build and modernise integrations, APIs and event-driven solutions while contributing to CI/CD and testing practices.

Qualifications

• Strong experience with C# and .NET, including ASP.NET Core MVC and Web API.
• Experience designing REST APIs, microservices and event-driven solutions.
• Solid understanding of SOLID, design patterns and clean architecture.
• Docker experience and automated testing with xUnit or similar.
• Experience with SQL Server and data access technologies.
• CI/CD and Git-based development.
• Experience designing event-driven solutions using Azure Service Bus, Kafka.
• Experience securing APIs (OAuth 2.0, OpenID Connect, JWT).

Responsibilities

• Develop and modernise integrations using C# and .NET, including Azure Logic Apps, Function Apps, containerised microservices and event-driven microservices.
• Build, integrate and manage APIs that connect services and platforms across our Technology landscape.
• Design and develop secure, maintainable solutions using established engineering principles and patterns.
• Work with Azure messaging and integration technologies to support event-driven architectures.
• Contribute to automated testing, CI/CD and Git-based development practices.
• Work closely with Architects and other developers to shape effective technical solutions.
• Create and maintain clear process, service and technical documentation.
• Mentor and support other developers, sharing your technical knowledge across the team.
• Help ensure solutions are secure, well maintained and compliant with internal governance.

Skills

C# & .NET

ASP.NET Core MVC

Web API development

REST APIs

Microservices

Azure

Docker

CI/CD

Git

SQL Server

OAuth 2.0

OpenID Connect

JWT

Azure Service Bus

Kafka

AI-assisted tooling

Tools

Terraform

Job description

Penguin Random House UK is seeking an experienced Senior Software Developer to join our Technology team in London on a permanent basis. This hands-on role focuses on C# and .NET, APIs, microservices and cloud-based integration, with mentoring responsibilities for other developers.

You will design, build and modernise integrations, APIs and event-driven solutions while contributing to CI/CD and testing practices.