Senior Backend Engineer - Platform Engineering

Role Overview

As a Senior Backend Engineer on the Phoenix team, you will be responsible for building and maintaining the shared backend platform services that other squads depend on. Your customer is not the end borrower, but the 12 squads that consume your APIs, SDKs, and shared services. Platform engineering is a product discipline, and the quality of what you build determines the velocity of the entire engineering organisation.

What You Will Do

Your key responsibilities will include building and maintaining the shared backend platform services, owning the IAM/RBAC SDK implementation, building the AI SDK integration layer, designing and implementing the shared event bus patterns, and writing platform SDK documentation and integration guides.

Why It Might Be a Fit

We are looking for a Senior Backend Engineer who is passionate about platform engineering, has experience building shared services or platform components consumed by other teams, and is familiar with API gateway configuration and service mesh management in a microservices environment.

Requirements

• 6 to 8 years in backend engineering with experience building shared services or platform components consumed by other teams
• Has designed and maintained SDKs or shared libraries in production
• Experience with API gateway configuration and service mesh management in a microservices environment
• Active AI tool user - uses Cursor and Claude for development today

Benefits

• Shape the future of FinTech
• Embrace a high-growth, high-impact environment
• Tackle real-world challenges
• Craft solutions that touch lives