Web Developer (Python

Senior Software Engineer, Web, Global Exchange Operator

London 4x Days per week in office

We are working exclusively with one of the world's largest exchange operators, a business at the centre of global financial markets. They are looking for a Senior Software Engineer to join their web engineering team, building and maintaining the primary interface for command and control of three European equities venues, trade reporting and SI technology services. These are high-traffic, high-stakes systems handling millions of requests per day.

You will design and build full stack web solutions from front end visualisations through to backend APIs and SQL database implementation. This is a hands‑on senior role where you will own features end to end, contribute to sprint planning, mentor junior engineers and act as subject matter expert across one or more systems. The team cares deeply about code quality, testing, automation and user experience.

CSS3

PostgreSQL andSQL, Apache, unit testing and full stack web testing

• 5+ years building high‑performance, data‑driven web applications
• Experience with MVC frameworks, Django preferred
• Comfortable working in a fast‑paced, deadline‑driven financial markets environment
• Strong communicator able to work across technical and non-technical stakeholders