Senior .NET Engineer | Low Latency Systems & Cloud Platform

Job description

Senior .NET Engineer, Low Latency Systems and Cloud Platform (Crypto Data Infrastructure)

Introduction

As a Senior .NET Engineer, you will join a technical environment focused on high-performance systems and low-latency data pipelines. You will be part of a lean, engineering-driven team building and maintaining the core backend services that power advanced trading infrastructures.

This work is part of a larger trading execution platform that includes market data ingestion, order routing, and portfolio-level services. You will operate in a horizontal team structure, where you are fully responsible for your area. From design to production, you will lead the entire lifecycle of the product you build.

This is a role for designing high-demand, low-latency systems that require careful, detail-oriented implementation.

You will be responsible for:

-             Designing and implementing low-latency .NET microservices following Clean Architecture principles

-             Building background services (WebSocket consumers, FIX clients, Kafka or EventHub producers and consumers)

-             Connecting to financial market data sources and real-time streams

-             Implementing core components of an advanced trading system, including order management, portfolio logic and market data pipelines

-             Developing use case-driven business logic, fully decoupled from infrastructure

-             Handling data persistence in high-throughput environments, with special attention to latency, consistency and storage patterns

-             Integrating observability (structured logging, metrics, tracing) and implementing fault-tolerant patterns

-             Participating in cloud-native infrastructure decisions.

-             Leading the entire development lifecycle from initial setup to production delivery

Role tech keys

-             You like to design before coding, and are passionate about the architecture of complex systems

-             You will be contributing to a larger execution platform that handles both market data and order-driven workflows

-             Language: C# (.NET 8)

-             Architecture: Clean Architecture

-             Infra: Azure Container Apps, Azure Event Hub, Redis Cache, PostgreSQL (Timescale)

-             CI/CD: Azure DevOps and Terraform (IaC)

-             Messaging: Kafka or Redpanda

-             Data ingestion: WebSockets, REST, FIX

You’re a great fit if you:

-             Have 5 or more years of experience in professional .NET and C# backends

-             Have experience with market data or trading systems

-             Have worked with event-driven systems such as Kafka, RabbitMQ, or Event Hub

-             Know how to write, test and scale background services in .NET

-             Are comfortable with multithreading, async, and streaming logic

-             Understand and care about system boundaries and responsibilities

-             Can work close to infrastructure, including containers, CI, Terraform and logging

-             Value clear documentation (without overdoing it)

Nice to have:

-             Node.js, TypeScript, NestJS, Python

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

21-02-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English