Senior Software Engineer - Interim

Software Engineer – Securities Lending Platform London | TEMP / INTERIM | Junior / Mid-Level | Hybrid We are recruiting a Software Engineer to join a growing technology team building a new real-time, event-driven trading platform covering securities lending, repo and derivatives. This is a genuine software engineering role with a particular focus on trade lifecycle, settlement connectivity and workflow automation. You will work across Java and Python development, integrations and event-driven processing, gaining exposure to the full lifecycle of a modern financial-markets platform. The platform has two core objectives:

• Workflow automation – streamlining reconciliation, risk management, reporting and settlement processes
• Front-to-back integration – consolidating the trading lifecycle into a unified platform What you'll be doing
• Developing Java server-side and UI components
• Building Python ETL and automation pipelines
• Developing integrations with external vendors and financial systems
• Helping build connectivity into settlement and post-trade infrastructure
• Supporting automated trade and settlement workflows, including T+1 processing
• Working with APIs, messaging technologies and data feeds
• Developing event-driven components using Kafka
• Working with traders, operations and other engineers to deliver new functionality
• Testing, troubleshooting and improving production applications
• Contributing to the ongoing design of a new platform being built from the ground up Technology Java | Python | AWS | Linux | PostgreSQL | Kafka | Git You may be an established mid-level developer or a strong junior engineer ready to take on more responsibility. We are looking for:
• Good commercial knowledge of Java and/or Python
• Java is preferred, although strong Python developers with a solid Java foundation will also be considered
• Practical experience with relational databases and SQL
• Comfortable working with Linux
• Good software-development fundamentals
• Strong problem-solving skills
• Good written and verbal communication
• An interest in building complex, data-driven systems Experience with any of the following would be beneficial:
• APIs and external-system integrations
• Kafka or other messaging technologies
• AWS or another major cloud environment
• SWIFT or settlement connectivity
• Trade processing or post-trade technology
• Securities lending
• Repo
• Delta-1
• Derivatives
• Capital markets Financial-markets experience is useful but not essential if you have strong software-engineering fundamentals. Why join? This is a strong opportunity for an ambitious engineer to join a growing team at an early stage of a significant new platform build. You'll receive mentoring from experienced engineers while gaining exposure to modern technologies, financial markets and the complete development lifecycle.