[Hiring] Senior Software Engineer @Brim

Role Description

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, focusing 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.

Qualifications

• 6+ years of professional development experience with deep expertise in application architecture and production systems at scale.
• Strong command of MySQL including query optimization, schema design, and performance tuning.
• Extensive experience with RESTful API design and microservices architecture.
• A track record of making sound technical decisions under ambiguity - designing systems, evaluating tradeoffs, and leading through influence rather than authority.
• Aptitude working across the full stack - you're not boxed into backend or frontend, you go where the problem is.
• Comfort with remote-first, sync and async collaboration and strong written communication skills.
• Ability to balance long-term architectural thinking with pragmatic delivery in a fast-moving environment.

Requirements

• Experience in fintech, payments, credit card infrastructure, or regulated financial services.
• Familiarity with multi-tenant platform architecture or real-time transaction processing.
• Experience with AI-assisted development tools or integrating LLM APIs into production systems.
• Background with PCI DSS, SOC 2, or financial compliance requirements.

Benefits

• Competitive compensation and equity.
• Remote-first workplace (full availability during ET working hours required).
• Comprehensive health plan and PTO.
• A team that treats AI as a force multiplier, not a threat.
• Real ownership - you'll shape the systems and standards that define how we build.
• Direct influence on the technical direction of a platform serving major financial institutions.

Company Description

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.