Job Title

Software Engineer | C#, SQL, Testing - Legacy Refactoring project @ a Systematic Hedge FundLike the look of this opportunity Make sure to apply fast, as a high volume of applications is expected Scroll down to read the complete job description.Rate: 650-750 per dayIR35: OutsideDuration: 12 months+Location: 3 days in the office per week in Moorgate/Liverpool StreetWere working with a high-performing, systematic hedge fund based in the City to help them hire a Senior Software Engineer to take ownership of a core Portfolio Management platform during a major platform migration and refactor initiative.This is a unique opportunity to own and evolve a mission-critical application in a lean, engineering-led environment where quality matters and your input will directly shape the platforms future.Environnent & Culture:3 days a week in-office (typically Mon/Wed/Fri) - ESSENTIALBased in a central London WeWork office with access to a nearby front-office floorVery lean team, just 16 people globally 8 of whom are in technologyFast decision-making, lots of autonomy, very high standardsExpect collaborative discussion and plenty of technical back-and-forthTech Stack:C# / .NET (currently on 4.6.1, migration planned)SQL Server (Any RDBMS experience is ok)Python (nice to have)Docker (nice to have some containerisation appreciation)CI/CD, monitoring, observability (nice to have)Experience in XP or lean development (nice to have)The Role:Youll be the lead engineer on their Portfolio Management application, refactoring the existing codebase, helping move it to a new server environment, and improving how logic sits between the app and the database.Project: Thick client => migrating the logic and components to the => new server-side applicationThe application is mature but under-tested so the focus is on precision refactoring, incremental improvement, and maintaining behavioural integrity during change.You'll work closely with senior platform owners, quant developers, a DevOps engineer, and trading analysts across the front and middle office.About You:10+ years experience as a hands-on software engineerStrong C#/.NET and SQL background, ideally in data-centric or financial systemsSolid experience refactoring legacy applications without full test coverageTesting; You must be a meticulous Tester in TDD. Excellent at writing characterisation tests to lock down behaviour before improvingStrong software architecture knowledge, as you will be architecting the new productYou must have a passion for refactoring to improve code quality and for automated testing at all levels; unit, integration & acceptance.You take pride in annotated, clean commits and structured workflowsHaving a DevOps mindset and getting the importance of cultureIf you enjoy carefully improving legacy code, owning your application, and collaborating closely with a brilliant (and refreshingly small) trading and quant team, this ones for you.Apply ASAP for an immediate interview!Software Engineer | C#, SQL, Testing - Legacy Refactoring project @ a Systematic Hedge Fund