OUTSIDE IR35 CONTRACT - Senior/Principal Java Developers - Low Latency Investment Banking Project - Greenfield - £550-800/Day - 2-3 Year Project We are a boutique software development consultancy about to embark on a greenfield project for a tier one investment bank. We are building a new low-latency system and are looking for several senior java developers with prior experience developing highly performant, scalable, low latency banking systems to join us. As we are hiring several developers, the day rate is flexible depending on level of experience and domain knowledge. Tech stack: Java 21, Spring Boot, Unix/Linux, MongoDB, GCP, Kubernetes, TCP, MongoDB, FIX, Tibco, KDB and more The ideal candidate will be well versed in engineering best practices such as agile, TDD, XP and clean code. You will have exposure to both object oriented and functional programming principles. Ideally, you have experience working with legacy banking systems/trading applications, and feel comfortable diving in to refactor and build new functionality and features. What you'll be doing: Building the best-in-class low-latency platforms for a critical banking system Building and maintaining java trading applications that must be highly performant and scalable Be proactive to identify and resolve bottlenecks, introducing a methodical way of working as much as possible, as opposed to being reactive/firefighting Desired Experience: 7 years solid Java development (with a bare minimum of Java 11 but ideally Java 17) Proven track record building low-latency applications Prior investment banking experience Nice to haves: Kubernetes MongoDB Remote Working? This is a hybrid role, with a mix of WFH and a couple days in the office in Central London required.