Software Engineer (Back End)

Overview

As a 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

• Working 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.
• Contribute to engineering deliverables throughout the full lifecycle, ensuring performance, scalability, resilience, and alignment with engineering best practices.
• Drive innovation through POCs, technical evaluations, and continuous improvement initiatives.
• Communicate progress proactively, highlighting risks and removing delivery impediments.

Essential Qualifications / Experience

• 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.
• Strong understanding of low-latency engineering, concurrency, multithreading, and performance optimisation.
• Comprehensive SDLC experience across design, development, QA, deployment, and production support.
• Ability to balance rapid delivery with architectural rigour and long-term maintainability.
• Strong relational database design and optimisation skills (MSSQL, MySQL).
• Proven problem-solving capabilities and ability to validate ideas through POCs.
• Experience building automated testing frameworks for complex distributed systems.
• Ability to engage effectively with traders, quants, and other business stakeholders.

Desirable Domain & Technologies

• Domain experience in Credit or Fixed Income.
• Expertise in modern .NET technologies and C# (Java or similar OO languages considered).
• Experience implementing observability (metrics, tracing, logging) for distributed systems.
• Experience with CI/CD pipelines, containerisation (Docker), and orchestration (Kubernetes/EKS).
• 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.
• Familiarity with React and DAPR (nice to have).
• Understanding of TDD, BDD, or similar testing methodologies.

Role Band & Level

Professional, 5

Location

UK – 135 Bishopsgate – London

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