Fullstack .NET developer

Overview

We are seeking an experienced Full Stack .NET Developer to build and enhance low-latency back-end services and user-facing tooling supporting a hedge fund / asset manager environment. The ideal candidate has strong C#/.NET fundamentals, a deep understanding of object-oriented programming, and proven experience delivering high-performance services for treasury, trading, and order management systems (OMS).

• Design, develop, and support low-latency back-end services for treasury/trading and order management workflows.
• Build and maintain robust APIs and service integrations across upstream/downstream systems and data sources.
• Optimize performance, throughput, and resiliency (profiling, tuning, caching strategies, and concurrency patterns).
• Implement clean, testable, and maintainable code following SOLID and modern engineering best practices.
• Partner with business stakeholders to translate treasury/operations/accounting/compliance needs into technical solutions.
• Contribute to front-end development as needed; create intuitive UI components and workflows (Blazor/Dev Express a plus).
• Participate in code reviews, debugging, incident response, and continuous improvement of engineering standards.
• Document designs, operational procedures, and support runbooks to ensure reliable production operations.

• 8-10+ years of professional software development experience, with advanced expertise in .NET and C#.
• 5-7+ years of hands-on experience building low-latency back-end services within treasury/trading/OMS environments.
• Strong object-oriented programming skills and ability to design scalable, maintainable architectures.
• Demonstrated experience with performance-sensitive systems: threading/concurrency, memory management, and latency reduction.
• Experience delivering production-grade services with solid engineering practices (testing, CI/CD, logging/monitoring).
• Prior domain exposure at a hedge fund or asset manager in at least one of the following areas (one required):
  Treasury, Operations (post-trade), Accounting, or Compliance.
• Excellent communication skills and ability to collaborate across engineering and business teams.

Candidates must have meaningful exposure to at least one of the following business areas within hedge funds or asset managers:

• Treasury
• Margin, financing costs, optimization, and locates.
• Understanding of funding/financing mechanics and related analytics.
• Operations (Post-Trade)
• Post-trade reconciliations, affirmations, allocations.
• Break resolution, dispute processes, and exception management.
• Accounting
• Accounting workflows and controls relevant to investment operations (GL impacts, postings, reporting).
• Compliance
• Trade surveillance or compliance monitoring workflows, controls, and reporting.

• Front-end development experience with Blazor.
• Experience using Dev Express components and UI frameworks.
• Experience with distributed systems patterns (messaging/event-driven architectures).
• Knowledge of market data, trade life cycles, and/or risk and PnL concepts (depending on domain area).

This role is based in Stamford, Connecticut or Midtown Manhattan, New York. Work arrangement (on-site/hybrid/remote) will be confirmed during the interview process.

• Low-latency services meet performance and reliability targets in production.
• Business users gain measurable efficiency through improved treasury/operations/accounting/compliance workflows.
• Codebase quality improves through strong engineering discipline, testing, and documentation.
• Stakeholders trust the platform due to stable releases, transparent communication, and quick issue resolution.