C# Software Engineer

JR United Kingdom; Preston; On-site; GBP 35,000 - 55,000; Full time

Job summary

A leading company is seeking a C# Software Engineer to enhance its data infrastructure. Ideal candidates will have strong skills in C#, Linux, and data handling. Responsibilities include monitoring and optimizing historical processing and live feeds, working closely with third-party vendors to fill data gaps and onboarding new data sources for enhanced trading strategies.

Qualifications

• Strong skills in C#, Linux, Dot Net, OOP coding, and Python scripting.
• Experience with streaming code design and handling terabytes of data.
• Ability to work under high-stakes, on-call conditions.

Responsibilities

• Monitoring existing data infrastructure and live feeds.
• Debugging and improving data infrastructure as needed.
• Responding to user reports and patching data issues.

Skills

C#

Linux

Dot Net

OOP coding

Python scripting

Data engineering

Attention to detail

Job description

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C# Software Engineer, Preston, Lancashire

Client: QuantConnect

Location: Preston, Lancashire, 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 who need it.

Note: We have a slight preference for 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 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 give our community more content for strategies.

Required Skills

• Strong skills in C#, Linux, Dot 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 scan and identify issues with data.

Our Ideal Candidate

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