Senior Software Engineer (UI) - OMS

Siepe is a fast-growing technology company headquartered in Dallas, TX – focused on helping investment managers turn complexity into clarity. We build software and data solutions that give hedge funds and financial services firms the visibility, speed, and confidence they need to make better decisions – faster.

Our platform delivers a unified source of truth that empowers our clients with real-time, actionable insights. We don’t just serve the industry – we help modernize it!

Siepe is profitable, privately held, and growing fast. We offer more than just competitive pay and great benefits—we offer the chance to do impactful work alongside sharp, driven teammates in a culture that rewards curiosity, initiative, and follow-through. Whether you come from finance, tech, or are charting a new path, you’ll find meaningful problems to solve, real ownership, and the momentum to grow your career with purpose.

What You'll Do

You Architect. AI Executes. Describe trade workflows, dashboards, and allocation UIs with enough precision that AI delivers correct Angular components—validation, state, API integration—on the first pass. Define integrated test scenarios that go beyond happy paths: edge cases around partial fills, allocation splits, audit trail integrity, and real-time data races. Set non-functional requirements up front—response times on large order books, rendering thresholds for data grids, accessibility scores—and enforce them through automated checks. Own post-deployment validation: confirm that what shipped behaves correctly under real trade volume and real market data. Drive the AngularJS-to-Angular migration by decomposing the problem and directing AI through it systematically. You Build What AI Can't Design high-signal trader experiences—real-time order dashboards, execution monitoring, bulk operations—where milliseconds and accuracy both matter. Architect data-dense UIs that handle large datasets gracefully: virtual scrolling, smart caching, the right loading strategy for each workflow. Integrate with .NET/C# backend APIs and SignalR for live data, with robust error handling and secure auth flows. Shape codebase conventions so AI produces better output over time: consistent component structure, standardized NgRx patterns, clear service boundaries.

What You'll Bring You see a trade workflow and immediately start decomposing it—components, state flows, API contracts, test scenarios, performance targets— before anyone opens an IDE. Strong Angular and TypeScript experience building enterprise applications with complex business logic. You can spec a solution clearly enough—architecture, edge cases, NFRs, KPIs—that AI (or a junior engineer) could build it from your description alone. Practical NgRx and RxJS experience for managing complex, real-time UI state. You review AI output the way a tech lead reviews a pull request: fast, precise, and always thinking about what breaks downstream. Comfortable working with .NET/C# backends, SQL Server, and RESTful API patterns. Solid HTML, CSS/SCSS fundamentals with responsive and accessible design instincts. Financial services or investment management background—trade lifecycle, positions, financial instruments (loans, bonds, swaps). Experience with Trade Order Management Systems, FIX/SWIFT integrations, or Bloomberg AIM. You've built data-intensive UIs where accuracy, auditability, and performance are non-negotiable. Must have current and ongoing authorization to work in the country of employment without the need for visa sponsorship, now or in the future.