Backend Engineer at First Circle

First Circle is hiring a senior backend engineer to build, operate, and improve production backend services and APIs for its fintech and banking products. The role covers feature delivery, incident response, service reliability, code review, and collaboration with product, design, and business teams. Candidates should have at least three years of experience with production backend systems in Kotlin, Java, or Ruby, along with API, database, and data-modeling expertise; startup, fintech, payroll, payments, or banking experience is a plus. The position is remote with the option to work from London, Hong Kong, or Belgrade, and includes private health insurance, training budgets, and travel opportunities.