Principal Engineer in London

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 operates from more than 60 offices in 27 countries. We are 5,300 people strong. We work as one to achieve our vision of being the world’s most trusted, innovative, liquidity and data solutions specialist.

Role Overview

The Global Analytics team builds and maintains mission‑critical systems for price discovery, order management, and trade capture tools that empower the front office to operate efficiently and effectively across global markets. As a Principal Software Engineer, you will join a high‑performing team delivering innovative, business‑critical software solutions. However, this role goes beyond delivery. You will serve as a Principal Technical Lead and trusted technical advisor to the Engineering Leadership. You will work across all development teams and regions, acting as the architectural authority for the high‑throughput Pricing Distribution pipelines and the core Order Management and Trade Capture solutions. Your mission is to bridge the gap between High‑Performance Engineering, QA Automation, and Quantitative Finance, ensuring our systems are robust, testable, and future proof.

Role & Responsibilities

• Strategic R&D & Decision Support: Act as the department's scout for frontier technologies. Evaluate emerging tools (e.g., .NET 9+, Cloud‑native accelerators, new IPC mechanisms) and conduct Proof of Concepts. Provide data‑driven benchmarking and performance evidence to support architectural decisions.
• Cross‑Team Technical Leadership: Collaborate across all development teams and regions (EMEA, AMER, APAC), ensuring technical consistency. Define and document rigorous engineering standards.
• Algorithmic Optimization & Pricing Distribution: Own the architecture for the Pricing Distribution layer. Optimize the fan‑out mechanisms to ensure high volumes of price updates reach the front office and clients with microsecond latency.
• Quality Assurance Guidance & Audit (Non‑Operational): Provide high‑level advice on the design of test automation frameworks to ensure they are testable, scalable, and representative of production loads.
• Deep‑Dive Performance Engineering: Deep dive into .NET Core CLR internals and memory management. Be the escalation point for GC pressure and latency jitter issues.

Experience / Competences

Essential: Strong engineering experience, with a track record of evolving complex systems in a mission‑critical environment. Expertise in C#/.NET Core. Strategic Technical Vision. Quantitative Aptitude. Cross‑Functional Influence. Polyglot Readability (C++). Algorithmic Foundation.

Desired: Strong academic background in Computer Science, Mathematics, or Physics. Experience architecting High‑Throughput Data Distribution systems.

Not The Perfect Fit? Concerned that you may not meet the criteria precisely? At TP ICAP, we wholeheartedly believe in fostering inclusivity and cultivating a work environment where everyone can flourish, regardless of your personal or professional background. If you are enthusiastic about this role but find that your experience doesn’t align perfectly with every aspect of the job description, we strongly encourage you to apply.

Company Statement: We know that the best innovation happens when diverse people with different perspectives and skills work together in an inclusive atmosphere. That’s why we’re building a culture where everyone plays a part in making people feel welcome, ready and willing to contribute.