Market Data Engineer: Scale, Performance & Refactor

Saragossa; United Kingdom; On-site; GBP 77,000 - 94,000; Full time

Job summary

Saragossa is hiring a Software Engineer to work on the Market Data platform in the UK. You will contribute to building and maintaining the data systems that power major financial clients, with a focus on performance and scalability.

The tech stack is currently C# with a migration to Python, using SQL Server and moving toward PostgreSQL. You’ll analyze existing code, refactor, optimise, and help the platform evolve while delivering reliable production systems.

Qualifications

• Experience building and maintaining market data or large-scale data systems.
• Strong performance optimization and debugging skills.

Responsibilities

• Develop and improve market data systems within the existing codebase.
• Refactor and optimize current components for speed and reliability.
• Handle production support and system migrations as needed.

Tools

C#

Python

SQL Server

PostgreSQL

Job description

Saragossa is hiring a Software Engineer to work on the Market Data platform in the UK. You will contribute to building and maintaining the data systems that power major financial clients, with a focus on performance and scalability.

The tech stack is currently C# with a migration to Python, using SQL Server and moving toward PostgreSQL. You’ll analyze existing code, refactor, optimise, and help the platform evolve while delivering reliable production systems.