Senior .net Developer

Group Overview

The TP ICAP Group is a world leading provider of market infrastructure.

Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions.

Through our people and technology, we connect clients to superior liquidity and data solutions.

The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the world’s leading provider of OTC data, and an award winning all-to-all trading platform.

Founded in London in 1866, the Group operates from more than 60 offices in 27 countries.  We are 5,200 people strong.  We work as one to achieve our vision of being the world’s most trusted, innovative, liquidity and data solutions specialist.

Liquidnet

Liquidnet is a next-generation agency execution specialist. Powered by technology that helps drive institutional alpha, our trading and liquidity network intelligently and securely connects the world’s investors with the world’s investments.

Established in 1999 on the belief that there was a better way to trade, Liquidnet's journey began with a vision to create a platform that goes beyond traditional transactional models.

We wanted to build a community where traders could connect, collaborate, and execute trades with confidence. Over the years, we've grown from a vision into a thriving ecosystem that empowers the buy side in ways never before imagined.

We are committed to making trading more efficient, intelligent, and accessible. Our purpose guides every decision we make, from the tools we develop to the relationships we nurture with our Members.

Role Overview

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.

Role 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

Experience / Competences

Essential

• 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<T>, Memory<T>, Pipelines), and minimizing jitter in performance-cri