Senior .net Developer

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The TP ICAP Group is a world‑leading provider of market infrastructure, offering clients access to global financial and commodities markets. With more than 60 offices in 27 countries and 5,200 employees, TP ICAP is the largest inter‑dealer broker by revenue, a top Energy & Commodities broker, provider of OTC data, and owner of an award‑winning all‑to‑all trading platform.

Liquidnet is a next‑generation agency execution specialist that uses technology to drive institutional alpha. Founded in 1999, it builds a community where traders can connect, collaborate, and execute trades with confidence, aiming to make trading more efficient, intelligent, and accessible.

Liquidnet seeks an experienced developer to join the Global Trading Technology team in New York. The position requires a proven track record of developing client‑facing solutions for a world‑class firm and will be responsible for building and supporting core trading applications.

• Develop innovative features within Liquidnet’s & TPICAP Trading Platform, writing robust, performant, and maintainable code.
• Participate in design and estimation activities with the Product Owner.
• Contribute to sprint and release planning.
• Provide L3 support for production systems, investigating production issues.
• Perform code reviews and act as primary point of contact for QA and production queries.
• Stay current with industry trends and incorporate emerging best practices.
• Engage with development communities of interest (COIN groups).
• Mentor and train team members.
• Help define TPICAP development standards and best practices.
• Build relationships with internal and external stakeholders to ensure service continuity and implement global development & deployment standards.
• Ensure adherence to internal policies, compliance, and operational risk requirements.
• Complete mandatory training by required deadlines.
• Act with integrity and diligence in carrying out duties.

• Proficiency in C# and .NET, with deep expertise in core language features, async/await, memory management, and performance optimization.
• Experience with multiple programming languages (e.g., F#, Python, C++, or Java) and the ability to adapt to new languages and paradigms.
• Extensive experience developing Order Management Systems (OMS) and Execution Management Systems (EMS) or similar high‑throughput, real‑time trading platforms.
• Low‑latency C# development expertise, including garbage‑collection tuning, network I/O optimization, and minimal jitter in performance‑critical systems.
• Expertise in distributed systems development, messaging systems (e.g., Kafka, Rabbit
  
  MQ, Azure Service Bus), microservices architecture, and fault‑tolerant design.
• Strong object‑oriented design skills, grasp of design patterns, SOLID principles, and clean code practices.
• Proven track record in designing, developing, and deploying trading applications in performance‑sensitive environments.
• Proficiency with Git, branching strategies, code reviews, and CI/CD integration.
• Good knowledge of the modern .NET ecosystem, build tools (MSBuild, NuGet), dependency injection, and testing frameworks (xUnit, NUnit, MSTest).
• Enthusiasm to learn new languages and technologies based on project requirements or evolving tech stacks.

• Experience in financial services application development, particularly in Cash Equities or Fixed Income trading environments.
• Familiarity with Agile methodologies (Scrum or Kanban) and experience working in cross‑functional Agile teams.
• Knowledge of front‑end and cloud technologies, including:
  • JavaScript and modern frameworks like React
  • Cloud platforms such as Azure or AWS (e.g., EC2, Lambda, S3, Cloud Watch)
  • Relational databases such as SQL Server and PostgreSQL
• Exposure to Dev Ops practices and tools, such as Docker, Kubernetes, and Jenkins, is a plus.

Manager / 6

$145,000 - $155,000

USA - 200 Vesey Street - New York, NY

If you do not meet every criterion precisely but are enthusiastic about this role, we encourage you to apply. You may be the ideal candidate for this or another opportunity within our organization. Our Talent Acquisition team is here to help you recognize how your unique skills can contribute. Don’t hesitate to explore the possibilities.

We believe the best innovation happens when diverse people with different perspectives and skills work together in an inclusive atmosphere. TP ICAP Accord, our Employee Network, is central to building this culture, increasing awareness, collaboration, and holding the firm accountable for continuous cultural improvement.