C# Software Engineer

JR United Kingdom; Luton; On-site; GBP 40,000 - 65,000; Full time

Job summary

A leading company in investment strategy design is seeking a full-time mid to senior C# Software Engineer in Luton. The role involves managing and expanding data infrastructure crucial for their trading platform. The ideal candidate will have strong programming skills in C# and experience dealing with large data sets, ensuring efficient data handling and engineering solutions.

Qualifications

• Strong skills in C#, Linux, .NET, OOP coding, and Python scripting.
• Experience with enumerable, streaming code design, efficiently working with terabytes of data.
• Meticulous attention to detail to quickly identify issues with data.

Responsibilities

• Monitor existing data infrastructure including processing and live feeds.
• Debug data infrastructure and respond to user reports for data issues.
• Onboard new data sources to enhance community content.

Skills

C#

Linux

.NET

OOP coding

Python scripting

Job description

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C# Software Engineer, Luton, Bedfordshire

Client: QuantConnect

Location: Luton, Bedfordshire, United Kingdom

Job Category: Other

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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 have a slight preference for UK/Europe applicants so you're awake at 4 am ET long before the markets open.

Responsibilities

We're seeking a full-time, mid to senior C# engineer to manage, maintain, and expand our data stack. Your responsibilities would include:

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

Required Skills

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

Our Ideal Candidate

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