Senior C# .NET Developer | High-Volume Data | Kafka | Energy Trading | Up to £95,000 + Bonus | Hybrid, London

Skills

Job Specifications

Senior C# .NET Developer | High-Volume Data | Kafka | Energy Trading | Up to £95,000 + Bonus | Hybrid, London

A Senior C# .NET Developer is required to join a high-performing Data Platform team within a leading Energy Trading firm operating across global markets.

This is a C# .NET–focused engineering role working in a high-volume, high-frequency data environment, building modern distributed systems that process and stream large-scale market data in real time.

You will be joining a technology-driven trading business that invests heavily in modern engineering practices, scalable architecture, and cloud-native infrastructure.

The Team

The Data Platform team sits at the core of the organisation’s trading ecosystem. They design and build the systems responsible for:

Ingesting and streaming high-frequency market data
Storing and processing large-scale time-series datasets
Distributing real-time data across trading and analytics platforms
Enabling advanced quantitative and trading strategies

The environment is event-driven, Kafka-based, and built on modern .NET Core and Azure infrastructure. The team works closely with Trading, Quantitative Analytics, and Production Operations to deliver performance-critical systems that directly impact trading performance.

Role Details

Up to £95,000 + 20–30% Bonus + Benefits

Tech Stack: C# | .NET Core (5+) | Kafka | Azure | SQL Server | Docker | Kubernetes

Hybrid working (2–3 days per week onsite)

Liverpool Street / Bank / Moorgate

As a Senior C# .NET Developer, you will:

Design and build high-performance backend systems using C# and .NET Core
Develop scalable, event-driven services within a Kafka streaming architecture
Engineer systems capable of handling large volumes of structured and time-series data
Write efficient, multithreaded C# code optimised for throughput and performance
Contribute to system architecture, scalability, and resilience decisions
Deliver end-to-end functionality from analysis and design through to release
Implement clean coding standards (SOLID, IoC, automated testing)
Support CI/CD pipelines, Azure deployments, and production monitoring
Collaborate closely with Trading and Quant teams on performance-sensitive solutions
Mentor and review code where required

Required Experience

Strong commercial experience as a C# .NET Developer
Deep understanding of .NET Core / .NET 5+ backend development
Experience building high-throughput backend services or APIs
Exposure to distributed systems, concurrency, or multithreading
Experience working with relational databases (SQL Server, Postgres, etc.)
Exposure to Azure cloud environments
Strong understanding of object-oriented design and modern engineering practices
Confident communicator comfortable working across technical and business teams

Desirable Experience

Kafka or other event-streaming technologies
Large-scale data environments (streaming, data lakes, time-series systems)
Docker & Kubernetes
Observability and monitoring tools
Experience within energy, commodities, or financial trading environments

Senior C# .NET Developer | High-Volume Data | Kafka | Energy Trading | Up to £95,000 + Bonus | Hybrid, London

About the Company

From start-ups to unicorns, you need great people to grow, so at VirtueTech we do recruitment differently. We believe companies are defined by their people, so connecting clients and candidates through mu-tual values is key for a thriving business. With a joint brand mission being paramount for success, you need an agency aligned with that purpose. Which is precisely where we come in... At VirtueTech jobs are more than just a salary, they're a passion. So we understand and reflect our clients values, in both ourselves and... Know more

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