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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Software Developer (OMS/EMS) - Leading Tier 1 Hedge Fund - Discrete Search- Excellent Com[...] - **Company:** Mondrian Alpha - **Location:** Greater London, UK - **Experience:** Expert - **Salary:** £300,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Amazon Web Services, C Sharp (Programming Language), Data Structures, Memory Management, Python (Programming Language), Microsoft SQL Server, Systems Development Life Cycle, Modern Ui, Sql Optimization, ReactJS, Snowflake, Concurrency, Vue.js, AngularJS, Tools for Reporting - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815190898-lead-software-developer-omsems-leading-tier-1-hedge-fund-discrete-search-excellent-com ## About the Role * 10+ years' OMS/EMS experience building and supporting order/execution workflows. * Strong hands-on skills in C# or Python, advanced SQL, and solid foundations in data structures, memory management, and concurrency. * Experience with AWS/Snowflake and modern UI frameworks (Angular/React/Vue). * Excellent stakeholder communication and the ability to translate complex ideas into clear, actionable plans. * Comfort balancing project delivery with production support in a fast-moving environment. * Bonus: knowledge of Equities, Fixed Income, Options, Futures and pragmatic use of AI tools to accelerate the SDLC. ## Description My client, a leading global hedge fund, is seeking their first engineering hire within their London office to lead the built out of their global OMS. This is a rare opportunity to sit close to the business-Portfolio Managers, Traders, Compliance, Treasury, and Trade Operations-owning technology that powers the full trade lifecycle from origination through warehousing. You'll lead the design and delivery of scalable, business-critical applications that augment vendor OMS/EMS and integrate with bespoke systems for treasury, compliance, and trade ops. Expect a modern stack (SQL Server, Snowflake, AWS, Angular/React) and a fast-paced environment where your engineering decisions directly shape a multi-asset trading platform. Key responsibilities will include: * Architecting and building trade-flow applications & reporting tools: You'll design and deliver resilient services that streamline order capture, routing, compliance checks, allocations, warehousing, and end-of-day processes-integrating vendor OMS/EMS with in-house platforms. * Enhancing and extending OMS/EMS workflows across asset classes: You'll tailor and extend vendor functionality, close gaps with custom augmentations, and ensure seamless data and workflow integration across trading, compliance, treasury, and trade operations. * Partnering directly with front-office and operations stakeholders: You'll work hand-in-glove with PMs, traders, ops, and tech leadership to define requirements, iterate quickly, and ship solutions that improve speed, control, and transparency. * Modernising the platform and establishing best practices: You'll drive cloud migration (AWS, Snowflake), uplift data models and pipelines, and set engineering standards around reliability, observability, testing, and performance-guiding junior engineers along the way. * Owning production quality and support: You'll provide escalation-level coverage for mission-critical OMS/EMS platforms during market hours and EOD, helping keep the trade lifecycle running smoothly globally. They are seeking candidates with: * 10+ years' OMS/EMS experience building and supporting order/execution workflows. * Strong hands-on skills in C# or Python, advanced SQL, and solid foundations in data structures, memory management, and concurrency. * Experience with AWS/Snowflake and modern UI frameworks (Angular/React/Vue). * Excellent stakeholder communication and the ability to translate complex ideas into clear, actionable plans. * Comfort balancing project delivery with production support in a fast-moving environment. * Bonus: knowledge of Equities, Fixed Income, Options, Futures and pragmatic use of AI tools to accelerate the SDLC. My client anticipates to pay a strong performer upwards of £300k year 1 total compensation package. As well as a market-leading compensation package, they offer exceptional benefits including a top-tier healthcare package, fully subsidised qualifications plus breakfast and lunch paid for each day. 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