C# Software Engineer

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

Job summary

A leading company in investment strategy development is looking for a C# Software Engineer based in Watford. The role involves monitoring and enhancing data infrastructure for real-time and historical data processing. The ideal candidate is proficient in C#, Linux, and data handling, with a meticulous attention to detail for managing large datasets.

Responsibilities

• Monitoring existing data infrastructure including historical processing and daily data updates.
• Debugging and improving data infrastructure as needed.
• Responding to user reports of data issues.
• Collaborating with third-party vendors to source data.
• Onboarding new data sources.

Skills

C#

Linux

.NET

OOP coding

Python scripting

Streaming code design

Data attention to detail

Job description

Social network you want to login/join with:

C# Software Engineer, Watford, Hertfordshire

Client: QuantConnect

Location: Watford, Hertfordshire, United Kingdom

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 have a slight preference for UK/Europe applicants due to time zone considerations.

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.
• Collaborating with third-party vendors to source data for gaps.
• Onboarding new data sources to enhance content for strategies.

Required Skills

• Strong proficiency in C#, Linux, .NET, OOP coding, and Python scripting.
• Experience with enumerable, streaming code design, efficiently handling terabytes of data.
• Comfortable with high-stakes, on-call data engineering tasks.
• Meticulous attention to detail for quick identification of 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 will be ignored.