Software Engineer (Backend)

About the role

We are rebuilding clearing as its own specialist function. We act as a clearing and transaction banking partner for regulated institutions, with treasury built into the core so liquidity, settlement, and reconciliation sit in one controlled system.

Responsibilities

• Backend systems design & implementation - Design, build, and maintain backend services and APIs in Rust (or similar languages with a path to Rust).
• Implement robust domain logic for clearing, payments, accounts, and reconciliation.
• Contribute to architectural decisions and help evolve our service boundaries and integrations.
• Scalability, performance & reliability - Build systems that can handle high-volume, high-reliability financial workloads.
• Design with observability in mind (metrics, logs, tracing) and use data to drive improvements.
• Participate in on-call and incident response, helping to diagnose and resolve production issues.
• Security & compliance aware engineering - Work closely with Security and GRC teams to ensure services meet security and compliance requirements (e.g. SOC 2, ISO 27001).
• Implement secure coding practices, strong authentication and authorization patterns, and data protection controls.
• Contribute to internal documentation and standards around secure and compliant engineering.
• Collaboration & delivery - Partner with Product Managers and other stakeholders to refine requirements and scope work.
• Break down projects into well-defined tasks and deliver value iteratively.
• Review code, provide feedback, and help maintain high engineering standards across the team.
• Tooling, testing & continuous improvement - Write comprehensive tests (unit, integration, and where appropriate property-based tests) and support automated testing in CI/CD.
• Contribute to internal tooling, developer experience, and shared libraries.
• Share knowledge, mentor peers, and help raise the overall technical bar.

Requirements

• 3+ years of experience building backend systems in a strongly typed language (e.g. Rust, Go, Java, Kotlin, C++, or similar).
• Commercial experience in backend or systems engineering, working on distributed services or APIs.
• Genuine interest in working with Rust day-to-day (prior Rust experience or demonstrable learning is important).
• Solid understanding of backend fundamentals: concurrency, data modelling, transactions, reliability, and observability.
• Experience designing and consuming APIs (REST/gRPC/GraphQL) and integrating with other services and data stores.
• Strong testing mindset and familiarity with CI/CD workflows.
• Clear communication skills and a collaborative approach to working with Product, Operations, and other engineers.

Qualifications

• Hands-on experience with Rust in production or substantial personal/OSS projects.
• Experience in fintech, payments, banking, trading, or other financial infrastructure domains.
• Familiarity with event-driven architectures, message queues, and stream processing.
• Experience with PostgreSQL (or similar relational databases) and data-intensive workloads.
• Experience running services on a major cloud provider (e.g. AWS, GCP) and with containerisation/orchestration (e.g. Docker, Kubernetes).
• Exposure to regulated or high-assurance environments and the constraints they introduce.

Skills

• Rust

Benefits

• Opportunity to travel (if applicable)
• Flexible vacation policy
• Private Healthcare
• Employee stock ownership (ESOP)
• Flexible working and autonomy
• Pay it forward days - we offer 2 annual pay it forward days where you can take time to volunteer for a charitable cause that is important to you.
• Wellness days - we believe you can only work your best when you feel your best, and we know working at Lorum is intense, so we offer 3 wellness days every quarter where you can take time to re-energise.