Techfellow Limited
Senior Backend Engineer - Trade Processing | Proprietary Trading and Investment Firm
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Up to c. £225k Comp Package | Office-Led Working
Role Overview
Join the unified technology platform of a leading global trading firm, building shared systems used across multiple trading strategies, asset classes and business areas. The platform consolidates critical data, services and workflows to improve decision-making, accelerate delivery and provide an accurate, real-time view of firm-wide trading activity. You will design and develop services supporting trade capture, order processing, positions and investment-book-of-record capabilities. The role combines greenfield engineering with the evolution of established systems, giving you ownership from domain modelling and architecture through to deployment, production support and continuous improvement...
Key Responsibilities
- Design and build reliable server-side systems for real-time trade, order and position processing across multiple asset classes
- Develop shared services and data products that support trading teams, operations, risk, research and other technology functions
- Translate high-level business requirements into well-modelled technical solutions by developing a strong understanding of the underlying trading workflows
- Build event-driven and service-oriented architectures with careful consideration for scalability, consistency, availability and failure recovery
- Own systems throughout their lifecycle, including architecture, implementation, automated testing, deployment, observability and production support
- Improve and modernise existing platforms while delivering new capabilities without compromising the stability of business-critical services
- Work across Java, Python and other appropriate languages, selecting technologies based on the engineering problem rather than a fixed stack
- Apply domain-driven design and effective data modelling to complex trade-processing and investment-record domains
- Collaborate closely with other engineers through design reviews, pair programming and shared ownership of technically challenging work
- Promote strong engineering practices around rapid feedback, loosely coupled services, maintainability, transparent architecture and continuous delivery
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What You’ll Bring…
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- 7+ years of experience building and operating complex server-side software within demanding production environments
- Strong commercial development experience in Java and the JVM ecosystem, Python, or comparable modern backend languages
- Deep understanding of distributed systems, microservice architectures and the practical trade-offs between consistency, availability and partition tolerance
- Proven ability to design reliable, maintainable and testable systems that process high-volume or time-sensitive data
- Experience taking ambiguous or high-level requirements and independently driving technical projects through to production
- Strong knowledge of software design, domain modelling, APIs, asynchronous processing and event-driven architecture
- Practical experience with Linux, SQL, Git, automated testing and modern software-delivery workflows
- (Preferred) Exposure to Kafka, RabbitMQ or comparable messaging technologies, alongside Docker and Kubernetes
- (Preferred) Experience with Airflow or another Python-based workflow orchestration platform
- (Preferred) Experience working with trade lifecycle systems, order management, investment books of record, exchange trading or physical energy markets
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