Senior Software Engineer (Back End)

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 efficiency and 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