Senior Software Engineer (Back End)

ICAP; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

TP ICAP is seeking a Senior Back-End Engineer to design, develop, and maintain high-volume server-side applications and APIs that power trading and data platforms in London. You will shape technical architecture, ensure reliability, and promote engineering best practices.

You will lead delivery across the full software lifecycle, mentor engineers, drive performance improvements, and collaborate with traders, quants, and SMEs to realise scalable, low-latency solutions.

Qualifications

• Significant hands-on experience building latency-sensitive front-office trading systems (OMS, Matching, Execution).
• Designing and maintaining distributed, event-driven, cloud-native applications.
• Comprehensive SDLC experience across design, development, QA, deployment, and production support.
• Ability to balance rapid delivery with architectural rigour and long-term maintainability.
• Proven problem-solving capabilities and ability to validate ideas through POCs.
• Ability to engage effectively with traders, quants, and other business stakeholders.

Responsibilities

• Lead by example as a hands-on engineer, collaborating with Architects and Trading SMEs to design, build, review, test, and deliver mission-critical systems end-to-end.
• Own engineering deliverables throughout the full lifecycle, ensuring performance, scalability, resilience and best practices.
• Mentor engineers, elevate code quality, and foster technical excellence.
• Drive innovation through POCs, technical evaluations, and continuous improvement initiatives.
• Leverage AI-assisted tools to improve development efficiency and shape our AI journey.
• Communicate progress, highlight risks and remove delivery impediments.

Skills

Latency-sensitive trading systems

Distributed systems design

Cloud-native architectures

Mentoring engineers

Problem-solving

Cross-functional collaboration

Tools

Docker

Kubernetes

AWS

Redis

Solace

MSSQL

MySQL

GraphQL

Job description

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.

Role Overview

As a Senior Back-End Engineer, you will design, develop, and maintain robust server-side applications and APIs that support high-volume, data-intensive environments. You will play a key role in shaping technical architecture, ensuring system reliability, and driving best practices in software engineering. This position requires strong problem‑solving skills, deep technical expertise, and the ability to collaborate effectively with cross‑functional teams.

Role Responsibilities

• Lead by example as a hands ‑ on engineer, working closely with Architects, Principal Engineers, and Trading SMEs to design, build, review, test, and deliver mission‑critical, high‑performance systems end‑to‑end.
• Own engineering deliverables throughout the full lifecycle, ensuring performance, scalability, resilience, and alignment with engineering best practices.
• Mentor engineers, elevate code quality standards, and foster a culture of technical excellence.
• Drive innovation through POCs, technical evaluations, and continuous improvement initiatives.
• Leverage AI‑assisted tools to improve development efficiencyand help shaping our AI journey
• Communicate progress proactively, highlighting risks and removing delivery impediments.

Experience / Competences

Essential

• Significant years of hands‑on experience building and supporting latency‑sensitive front‑office trading systems (OMS, Matching, Execution).
• Strong background in designing and maintaining distributed, event‑driven, cloud‑native applications.
• Comprehensive SDLC experience across design, development, QA, deployment, and production support.
• Ability to balance rapid delivery with architectural rigour and long‑term maintainability.
• Proven problem‑solving capabilities and ability to validate ideas through POCs.
• Ability to engage effectively with traders, quants, and other business stakeholders.

Desired

• Domain experience in Credit or Fixed Income.
• Expertise in modern .NET technologies and C# (Java or similar OO languages considered).
• Strong relational database design and optimisation skills (MSSQL, MySQL).
• Deep understanding of low‑latency engineering, concurrency, multithreading, and performance optimisation.
• Experience implementing observability (metrics, tracing, logging) for distributed systems.
• Experience with CI/CD pipelines, containerisation (Docker), and orchestration (Kubernetes/EKS).
• Experience designing APIs (REST, GraphQL).
• Knowledge of distributed messaging and caching technologies (e.g., Solace, Redis, or similar).
• Understanding of FIX protocol and FIX message handling.
• Hands‑on experience with AWS, microservices, and serverless patterns.
• Understanding of TDD, BDD, or similar testing methodologies.

Role Band & Level: Manager, 6

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. TP ICAP Accord - our Employee Network - is a central to this. As well as representing specific groups, TP ICAP Accord helps increase awareness, collaboration, shares best practice, and holds our firm to account for driving continuous cultural improvement.

Location

UK - 135 Bishopsgate - London