Senior Backend Engineer — Fintech Payments & Security

Jack & Jill/External ATS; Greater London; On-site; GBP 80,000 - 110,000; Full time

Job summary

A fintech startup in London is looking for a Senior Software Engineer to build backend services targeting the reduction of financial scams. You will rearchitect payments infrastructure, ensuring security and scalability while having significant influence on technical decisions. The ideal candidate will have over 7 years of experience and expertise in modern backend languages and cloud technologies. This role offers an opportunity for high autonomy and impact in a dynamic environment.

Qualifications

• 7+ years of experience architecting and maintaining fault-tolerant, large-scale distributed systems.
• Experience in sensitive data contexts and understanding data governance.
• Ability to thrive in early-stage, iterative environments.

Responsibilities

• Build robust, well-tested, and performant backend services that integrate with customer systems to reduce scams.
• Design intuitive APIs for seamless integration and scalability.
• Understand and drive adherence to best practices for security, data management, and privacy.

Skills

Backend languages (Java/Scala/Go/Python/Rust)

Cloud technologies (Docker, Kubernetes, AWS/GCP)

Data governance

Job description

A fintech startup in London is looking for a Senior Software Engineer to build backend services targeting the reduction of financial scams. You will rearchitect payments infrastructure, ensuring security and scalability while having significant influence on technical decisions. The ideal candidate will have over 7 years of experience and expertise in modern backend languages and cloud technologies. This role offers an opportunity for high autonomy and impact in a dynamic environment.