Senior Software Developer

• Legal Entity:
  The Random House Group Limited
• Compensation: up to GBP 74000 - yearly

We have an opportunity for an experienced Senior Software Developer to join our Technology team in London on a permanent basis.

You’ll join our Integration team at an important point in our journey, helping us to modernise and migrate our integration landscape. This is a hands-on senior development role, with a strong focus on C# and .NET, APIs, microservices and cloud-based integration.

Alongside building and improving solutions yourself, you’ll use your technical experience to support and mentor other developers, sharing knowledge and helping to strengthen engineering practices across the team.

About the team

The Technology team provides expertise and effective solutions to Penguin Random House. We integrate flexibility and agility which supports our consistent way of working. We set ourselves up for success by holding ourselves accountable and welcoming change. Each member of the Technology team brings skill and initiative to their role; we take personal ownership within a one team culture, working collaboratively to meet expectations from our stakeholders who trust us to deliver.

The role

Key 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 and helping colleagues to develop their skills in Azure Integration Services.

Help ensure solutions are secure, well maintained and compliant with internal governance.

What you’ll bring

Strong professional experience of developing with C# and .NET, including ASP.NET Core MVC and Web API development.

Experience of designing and building REST APIs, microservices and event-driven solutions.

Strong knowledge of software engineering principles, including design patterns, SOLID principles and clean architecture.

Experience with Docker and containerisation, as well as automated testing using xUnit or similar frameworks.

Experience working with SQL Server and data access technologies.

Good knowledge of CI/CD and Git-based development.

Experience of designing event-driven solutions using Azure Service Bus, Apache Kafka or equivalent messaging technologies.

Experience implementing secure APIs using OAuth 2.0, OpenID Connect, JWT and Microsoft Entra .

Experience using AI-assisted development tools such as Git Hub Copilot, Microsoft Copilot, Claude Code, Gemini CLI, Cursor or similar, while maintaining engineering quality.

An interest in mentoring other developers and sharing technical knowledge across the team.

Experience with some of the following Azure technologies would be useful:

Application Insights and Azure Monitor

Infrastructure as Code using Terraform

AI

Here at Penguin, we believe in the power of authenticity and human creativity. When you apply for a position, we want to encourage you to showcase your unique voice. Throughout our recruitment process, please share your own thoughts, experiences, and skills. This helps us get a true sense of who you are and what you might bring to our team.

We celebrate creativity and diverse perspectives, so please be…