C# Software Engineer

JR United Kingdom; Warrington; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading company is seeking a C# Software Engineer based in Warrington, Cheshire. The role involves monitoring and improving data infrastructure while working with large datasets. Ideal candidates should have robust experience with C#, Linux, and data engineering principles. They should clone a repository and provide test results as part of their application. This position requires meticulous attention to detail and comfort with an on-call nature.

Qualifications

• Strong at C#, Linux, .NET, OOP coding, and Python scripting.
• Experience efficiently handling terabytes of data.
• Attention to detail for quick data issue identification.

Responsibilities

• Monitor existing data infrastructure and data updates.
• Debug and improve data infrastructure as needed.
• Respond to user reports of data issues and patch data.

Skills

C#

Linux

.NET

OOP

Python scripting

Job description

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C# Software Engineer, Warrington, Cheshire

Client: QuantConnect

Location: Warrington, Cheshire

Job Category: Other

EU work permit required: Yes

Job Views: 4

Posted: 26.06.2025

Expiry Date: 10.08.2025

Job Description:

We serve investors, traders, and quants with a platform to design investment strategies. They code up trading strategies and test them on historical data. When they're ready, they can live trade on their brokerage.

Under the hood, we curate and update hundreds of terabytes of data — covering financial data (e.g., stock prices, options prices), fundamental data (e.g., PE ratios, company debt), and alternative sources (e.g., news articles, sentiment). We have a powerful data processing stack that handles ingestion and distribution of all this data to our different consumers.

Note: We prefer UK/Europe applicants so you're awake at 4 am ET, long before the markets open.

Responsibilities

• Monitoring existing data infrastructure (historical processing, daily data updates, and live feeds).
• Debugging and improving data infrastructure as needed.
• Responding to user reports of data issues and patching data.
• Working with third-party vendors to source data for gaps.
• Onboarding new data sources to provide more content for strategies.

Required Skills

• Strong at C#, Linux, .NET, OOP coding, and Python scripting.
• Experience with enumerable, streaming code design, efficiently handling terabytes of data.
• Comfortable with the high-stakes, on-call nature of data engineering.
• Meticulous attention to detail to quickly identify data issues.

Our Ideal Candidate

• Clones our repository (LEAN), builds it successfully, runs unit tests, and attaches test results to the application. Applications without this test data, including one-click and AI applications, will be ignored.