Senior Backend Software Engineer

The role

You will design, build, and maintain core backend services for a global payments platform. You will own key systems from data models to deployment and integrate with payment partners and banks.

What you will do

• Design, build, and maintain core backend services
• Own key systems end to end
• Integrate with payment processors, banks, and identity providers
• Monitor, tune, and scale backend services
• Define and champion backend engineering best practices
• Build internal tools and automation
• Set and guide technical direction for backend architecture
• Review code and help raise the bar for the engineering team
• Own cloud infrastructure setup and deployment workflows

Required qualifications

• Deep experience with TypeScript and Node.js
• Strong experience designing and building scalable distributed backend systems
• Track record of owning critical backend infrastructure and making impactful architectural decisions
• Deep familiarity with cloud infrastructure, containerization, and infrastructure as code
• Experience building highly available systems with robust monitoring, logging, and alerting
• History of creating clean, well documented APIs and integrating complex external systems
• Ability to collaborate in a small, fast moving team while mentoring others
• Clear communication skills

Nice to have

• Experience at early stage startups where you owned large parts of the backend
• Hands on experience with Node.js and Typescript, AWS, Terraform, Kubernetes, Temporal
• Background leading technical strategy for a growing product or platform
• Experience in payments, fintech, or cryptocurrency, especially working with stablecoins or settlement systems

About the company

Fin is a next-generation payments platform built for high-value, global, and instant transactions. It is a Series A-stage company backed by Sequoia, Circle, and other notable investors.