Senior .net Developer

TP ICAP Group Plc.•New York, NY

29d•Hybrid

About The Position

Liquidnet is seeking an exceptional and experienced Developer to join the Global Trading Technology team based in New York. This experienced individual has a proven track record of developing quality client-facing solutions for a world-class company. We are looking for an outstanding developer to be a part of a small, agile, highly professional global team delivering client-facing trading applications. This person will be responsible for developing and supporting the products that drive our core business.

Requirements

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

Nice To Haves

Experience in financial services application development, particularly in Cash Equities or Fixed Income trading environments.
Familiarity with Agile methodologies, such as 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, CloudWatch)
Relational databases such as SQL Server and PostgreSQL
Exposure to DevOps practices and tools, such as Docker, Kubernetes, and Jenkins, is a plus.

Responsibilities

Development of innovative features within Liquidnet's & TPICAP Trading Platform. Writing robust, performant and maintainable code.
Active participation in design and estimation activities in collaboration with the Product owner.
Active participation in Sprint and release planning activities.
Provide L3 support for the production system and actively participate in the investigation of issues.
Carry out code reviews
Provide the primary point of contact for queries in both QA and production.
Keep current with industry trends and incorporate emerging best practices into everyday work.
Contribute to the development communities of interest (COIN groups)
Mentoring and training other team members
Contribute to the definition of TPICAP development standards and best practices
Build relationships with internal and external stakeholders to ensure continuity of service and implementation of global development & deployment standards
Be responsible for ensuring that you are fully aware of and adhere to internal policies that relate to you, your role or any other activities for which you have any level of responsibility.
Ensure compliance and operational risk requirements are met (e.g. cultural behaviours, security policies and regulatory requirements)
Complete any mandatory training by the required deadlines.
Act with integrity and due skill, care and diligence in carrying out your duties