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Senior Software Engineer, Web

Signify Technology — United Kingdom · Posted ~1 day ago

Senior Onsite Visa History ✓

Skills

Python JavaScript Full-stack web development Django React Next.js ExtJS HTML5 CSS3 PostgreSQL SQL Linux Apache Unit testing Full-stack web testing MVC frameworks High-performance web applications Data-driven web applications Technical communication Python 3.8+

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Summary

A senior software engineer is sought for a web engineering team responsible for high-traffic systems serving critical financial-market workflows. You will build full-stack solutions spanning front-end visualizations, backend APIs, and SQL databases, while owning features from design through delivery. The role emphasizes high-performance, data-driven applications, strong testing and automation practices, code quality, and user experience. You will also contribute to planning, mentor less-experienced engineers, and act as a technical subject matter expert. Strong Python and JavaScript skills, Django experience, and a solid background building production web applications are essential. The role requires working from the office in London four days per week.

Highlights

Senior hands-on full-stack role working on high-performance, high-traffic systems in a critical financial technology environment. The position offers end-to-end feature ownership, opportunities to mentor engineers, influence technical direction, and work across front-end, backend, databases, testing, automation, and user experience.

Description

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. The Role 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 Tech Stack Python 3.8+, Django, LinuxJavaScript, React, NextJS, ExtJS, HTML5, CSS3PostgreSQL andSQL, Apache, unit testing and full stack web testing What They Are Looking For 5+ years building high-performance, data-driven web applications Strong Python and JavaScript across the full stack 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