Staff Fullstack Engineer

This role is a full-stack engineering position on Nium’s Customer Experience team, focused on building and evolving the Nium Client Portal and related web experiences that expose Nium’s global payments infrastructure. The engineer will work across the frontend and backend stack to turn complex cross-border payment capabilities into intuitive, scalable product experiences for fintech developers and operations users. The position sits within a high-growth fintech environment, contributing directly to new product initiatives such as stablecoin integrations, FX and payroll verticals, and onboarding and compliance flows. The role emphasizes rapid prototyping, end-to-end ownership, and close alignment with go-to-market strategy.