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Job Description

Senior Software Engineer (.NET)

Up to £115k + Benefits | London | Hybrid

Omnis Partners are partnering with a high-growth technology organisation that is redefining how merchants leverage data, analytics, and AI to understand performance and accelerate revenue growth.

We’re looking for a Senior Software Engineer (.NET) to join the central Data & AI team. You’ll build scalable backend services, APIs, and data pipelines that transform millions of transactions into actionable insights for merchants. This is a greenfield opportunity to shape systems that scale, drive AI-enabled analytics, and make a real impact on the business.

What You’ll Do

Build and maintain .NET backend services and APIs Develop and optimise SQL/NoSQL data models for high-volume data Implement reliable data pipelines and event-driven systems Collaborate with product, data, and engineering teams to deliver actionable insights Contribute to scalable, secure, and maintainable architecture

What You’ll Bring

Strong experience in .NET backend development Knowledge of data modelling, performance tuning, SQL/NoSQL Experience with data pipelines, streaming, or batch processing Familiarity with CI/CD, automated testing, and version control Passion for data, analytics, and AI-driven problem solving

Nice to Have: Cloud (AWS, GCP, Azure), Kafka/gRPC, React, Infrastructure as Code, ML/data processing experience

Why Join?

Work on greenfield data and AI initiatives Build scalable systems for millions of transactions Influence product and architecture decisions Join a rapidly growing company with ambitious plans

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