Senior Software Engineer

Brim Financial is a category defining fintech, building the operating system for credit cards and payments. Our platform powers card programs for banks, credit unions, fintechs, and global brands across North America. We are a fast growing company. We are backed by EDC Growth Equity, Epic Ventures, Vistara Growth, and Impression Ventures and have been recognized as a CB Insights Fintech 100 company and Deloitte Fast 50 and Deloitte Fast 500 winner.

We are looking for a Senior Software Engineer to lead the architecture and development of core platform systems. This is a high-ownership role - you'll design and scale the services that process credit card transactions, power real-time rewards at every merchant globally, and integrate with banking cores and payment networks. The systems you build will directly serve major financial institutions and their millions of end customers.

Lead the architecture, development, and optimization of services across the full stack using PHP and Python, with a focus on scalability, security, and long-term maintainability

Design and implement RESTful APIs and microservices that integrate with banking cores, payment networks, and institutional partner systems

Optimize MySQL performance through query tuning, schema design, and data modeling for high-throughput financial transaction systems

Drive engineering standards for quality, testing practices, and CI/CD workflows across the team

Provide leadership and influence the team's AI tooling strategy - evaluating, adopting, and establishing best practices for AI-assisted development across the engineering organization

Champion security and compliance best practices appropriate for a regulated financial services platform

Bring deep business understanding to technical decisions - the best solutions come from engineers who understand the full picture, from cardholder experience to settlement

Mentor mid-level and junior engineers on system design, full-stack fundamentals, and professional growth