C# Software Engineer

JR United Kingdom; Kingston upon Hull; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading technology company is seeking a mid to senior C# Software Engineer to enhance their robust data processing stack. This role involves managing data infrastructure and requires strong coding skills in C# and Python, alongside attention to detail. It offers a unique opportunity for professionals ready to engage in a high-stakes environment, contributing to strategies for investors and traders working on innovative financial solutions.

Qualifications

• Strong proficiency in C#, Linux, Dot Net, OOP coding, and Python scripting.
• Experience with enumerable, streaming code design, efficiently handling terabytes of data.

Responsibilities

• Managing, maintaining, and expanding the data stack.
• Monitoring existing data infrastructure and debugging issues.
• Working with third-party vendors to source data for gaps.

Skills

C#

Linux

Dot Net

OOP coding

Python scripting

Job description

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C# Software Engineer, Kingston upon Hull, East Yorkshire

Client: QuantConnect

Location: Kingston upon Hull, East Yorkshire, 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

We're seeking a full-time, mid to senior C# engineer to manage, maintain, and expand our data stack. Your responsibilities 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 give our community more content for strategies.

Required Skills

• Strong proficiency 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 the unit tests, attaches the test results to the job application. One-click applications, AI applications, and applications without this test data will be ignored.