Senior Integration Engineer - C#/.NET & Azure API Lead

Virgin Active; City of Westminster; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

25 days annual leave

The Peoples Pension 3%

Virgin Active membership for you and a

Dental and Healthcare Insurance

Life Assurance 4x salary

Discounts across Virgin Active

Special corporate discounts

Salary Finance access

Job summary

Virgin Active is seeking a skilled backend engineer to design, build, and support backend services, APIs, and integrations powering our digital ecosystem. You will collaborate with Engineering Leads, Product Managers, Designers, QA and frontend engineers to deliver reliable, secure, and scalable solutions across internal and third-party systems.

You will work with Azure and modern integration patterns, focusing on code quality, testing, CI/CD, and observability.

Qualifications

• Experience building backend services, APIs and system integrations using C# and .NET.
• Hands-on experience with Microsoft Azure and its integration services.
• A good understanding of RESTful APIs, event-driven architecture and asynchronous messaging.
• Experience integrating internal platforms with third-party systems.
• Knowledge of automated testing, CI/CD and modern software delivery practices.
• Strong problem-solving skills with the ability to troubleshoot distributed systems and integration failures.

Responsibilities

• Design, build and maintain backend services, APIs and integration solutions using C#, .NET and Microsoft Azure.
• Connect our mobile applications and digital products with internal platforms and third-party systems.
• Develop secure, scalable and maintainable solutions using API-led and event-driven integration patterns.
• Work with Product, QA and frontend engineers to deliver high-quality features from design through to release.
• Write clean, testable code and contribute to code reviews and engineering standards.
• Troubleshoot integration failures, production issues and performance problems.
• Improve automated testing, CI/CD, monitoring and system observability.
• Contribute to sprint planning, technical discussions and delivery estimates.
• Identify opportunities to simplify solutions, reduce technical debt and improve reliability.

Skills

C#

.NET

Azure

REST APIs

Event-driven

Tools

Azure Service Bus

Logic Apps

Functions

Event Grid

Kafka

RabbitMQ

Job description

Virgin Active is seeking a skilled backend engineer to design, build, and support backend services, APIs, and integrations powering our digital ecosystem. You will collaborate with Engineering Leads, Product Managers, Designers, QA and frontend engineers to deliver reliable, secure, and scalable solutions across internal and third-party systems.

You will work with Azure and modern integration patterns, focusing on code quality, testing, CI/CD, and observability.