Senior Software Engineer, Application Infrastructure



Software Engineering, Other Engineering
são paulo, state of são paulo, brazil
Posted on Saturday, July 6, 2024

Why join us

Brex empowers the next generation of businesses with an integrated corporate card and spend management software. We make it easy for our customers to manage every aspect of spending and empower their employees to make better financial decisions from anywhere they live or work. Brex proudly serves tens of thousands of growing businesses, from early-stage startups to global enterprises.

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 both internal and external users. We have multiple autonomous and collaborative teams who are eager to learn, teach, and constantly improve how things work. Together, we strive to build robust and scalable systems that enable Brex to grow rapidly and help our customers reach their full potential.

What you’ll do

The Application Infrastructure team sits in the Infrastructure group alongside Release Infrastructure and Cloud Infrastructure. We simplify writing code for every product developer at Brex.

As an engineer on the Application Infrastructure team you will build and own a suite of platforms and tools that Product Engineers use to deliver quality software solutions quickly. You’ll have the opportunity to work with a diverse range of technologies enabling federated GraphQL APIs, remote development environments, pre-merge testing, Brex-wide dependency management, fast Kotlin builds, developer CLIs and more.

You’ll need to be comfortable regularly working on complex systems across multiple programming languages and levels of abstraction. You’ll have the opportunity to learn and push the frontier of providing the best financial software experience to help companies grow. You’ll be encouraged to be metric and data-driven and to think creatively to help Brex scale into new markets and verticals.


  • Design and build robust platforms and tools to accelerate Brex product development
  • Own and maintain critical API infrastructure serving hundreds of requests per second
  • Identify and implement reliability and performance improvements in our backend stack
  • Uphold our high engineering standards and bring consistency to the codebases, infrastructure, and processes you will encounter


  • 5+ years of professional experience in a software engineering role
  • GraphQL experience, especially familiarity with Federated GraphQL
  • Kotlin background (Java and Scala are also acceptable)
  • Kubernetes familiarity
  • Platform or Full-Stack development background
  • Strong communication, interpersonal, and project planning skills
  • English proficiency/fluency, both written and speaking (note: interviews will be conducted in English)

Bonus points

  • Experience working with Bazel, bonus points if you’ve written rules or maintained Bazel as a platform. Extensive experience with other multi-language build systems is also good.
  • Golang experience, especially building CLIs
  • Experience extending IDEs


  • Must be working in Brazil at the start of role

Please be aware, job-seekers may be at risk of targeting by malicious actors looking for personal data. Brex recruiters will only reach out via LinkedIn or email with a domain. Any outreach claiming to be from Brex via other sources should be ignored.