Software Engineer II, Full-Stack

Why join us

Brex is the AI-powered spend platform. We help companies spend with confidence with integrated corporate cards, banking, and global payments, plus intuitive software for travel and expenses. Tens of thousands of companies from startups to enterprises — including DoorDash, Flexport, and Compass — use Brex to proactively control spend, reduce costs, and increase efficiency on a global scale.

Working at Brex allows you to push your limits, challenge the status quo, and collaborate with some of the brightest minds in the industry. We’re committed to building a diverse team and inclusive culture and believe your potential should only be limited by how big you can dream. We make this a reality by empowering you with the tools, resources, and support you need to grow your career.

Engineering at Brex

The Engineering team includes Data, IT, Security, and Software, and is responsible for building innovative products and infrastructure for Brex and our customers. We believe that engineers should accelerate the business through technology, and collaborate across multiple teams to accomplish that. 

Teams are autonomous, value inclusivity, eager to learn, teach and constantly improve how things work. The software we build today is the foundation for dozens of Brex systems in the future, so engineers have a strong sense of ownership and accountability and take pride in their craft. 

What you’ll do

As a Full-Stack Software Engineer on our Card Growth team, you will work across the entire Brex stack, creating and maintaining new products and features, and building tools that help scale Brex's card revenue. You will have the opportunity to learn and push the frontier of providing the best financial services experience to help companies grow. You’ll be encouraged to be metric and data-driven and to think creatively to help Brex scale and get prepared for the new markets we are about to enter. 

We’re looking for folks with not only an interest in building products and tools but also interested in leading multi-functional projects with lots of moving pieces. In this role, you’ll have the opportunity to drive direct business impact and shape our long-term technical vision with a high quality bar.

Responsibilities

• Work with engineers across the company to build new features and products end-to-end
• Work side-by-side with user facing teams (Sales, Support) to best understand the needs of our customers. 
• Design and implement experiments to improve our customer’s experiences and drive card product adoption. 
• Own problems end-to-end, thinking through everything from user experience, data models, scalability, operability and ongoing metrics.
• Tune and polish features to a high-degree of excellence.

Requirements

• 4+ years of professional full-time experience with a focus on frontend development, alongside designing, developing, and deploying full-stack products
• Experience developing software for the Web platform, including cross-browser compatibility
• Experience architecting, developing, and testing client-side code end to end
• Experience with modern tools like ES6+, React, GraphQL, & Webpack
• Uphold our high engineering standards and willingness to learn
• Strong written and verbal English communication and interpersonal abilities
• Must be willing to work in office 2 days a week in our office in Sao Paulo starting in September 2025.

Bonus points

• Experience collaborating with cross-functional stakeholders and specialists in product, design, and operations
• Experience working with Kotlin or other JVM languages for backend development
• Experience running in-product experiments, A/B testing
• Experience and interest in leveraging AI developer tools
• Effective writing skills
• Track record of identifying and fixing problems.