Senior .NET Integration Developer

Senior .NET Integration Developer - Maidenhead (Hybrid) - Salary £65k (DOE)

We have partnered with an exciting SaaS company who are looking for a Senior .NET Integration Developer to join their growing team.

You will be developing and maintaining robust integrations with third party systems such as financial services, telematics platforms and mapping APIs.

Key Responsibilities:

• Develop and maintain secure, well-documented financial and third-party integrations.
• Enhance the integration framework for scalability, performance, and industry alignment.
• Assist customers and partners in integration setup and API/gateway usage.
• Support and expand integrations for features like event tracking and CO2 reporting.
• Ensure integration development aligns with modern security and GDPR standards.
• Implement structured logging, monitoring, and documentation.
• Contribute to internal knowledge bases and explore automation tools (Power Automate, Zapier).

Essential Experience:

• Extensive experience with C# / .NET (Core or Framework) in integration-heavy environments
• Understanding of REST, WebAPI, event-driven architectures, and asynchronous messaging
• Hands-on experience in building resilient, fault-tolerant systems using retry patterns, queues, and circuit breakers
• Proficiency in integration security, including authentication, encryption, and GDPR compliance
• Highly proficient English (spoken and written) as this role is working with colleagues and clients to understand requirements, explain solutions and document clearly.

Desired:

• Experience integrating with financial or ERP systems
• Swagger/OpenAPI documentation for Open APIs
• Familiarity with Azure services and automation tools like Power Automate or Zapier
• Exposure to IoT or Telematics platforms
• Awareness of ISO 27001, SOC 2, or GDPR compliance standards

Benefits:

• Competitive base salary
• Hybrid working
• Private healthcare
• Exciting and unique projects
• Pension scheme

If you are a Senior .NET Developer experienced in integration heavy environments using the .NET Framework, looking to join a great company offering an incredible benefits package, this could be the perfect opportunity for you.

Many thanks,

Iona

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