Engineering at Brex

Engineering at Brex is about building systems that scale with speed and intention. Our teams span Software, Data, Security, and IT, and operate with high autonomy and deep collaboration. We tackle hard technical problems, own our outcomes, and push for excellence at every level — from architecture to deployment. It’s an environment where engineering is a craft, and builders become leaders.

What you’ll do

As a Senior Software Engineer, Infrastructure (Release Engineering) at Brex, you will design, build, and operate the core systems that power Brex’s release, observability, and incident management processes. You will partner closely with product, platform, and operations teams to ensure releases are safe, fast, and reliable, and that our infrastructure scales securely as Brex grows.

Where you’ll work

This role will be based in our São Paulo office. We are a hybrid environment that combines the energy and connections of being in the office with the benefits and flexibility of working from home. We currently require a minimum of three coordinated days in the office per week on Monday, Wednesday and Thursday. As a perk, we also have up to four weeks per year of fully remote work!

Responsibilities

• Design, build, and maintain the release infrastructure that powers Brex’s deployment pipelines and incident workflows
• Drive technical strategy and architecture for release and observability systems, making them more scalable, reliable, and secure
• Collaborate with product, engineering, and operations partners to ensure Brex’s releases are safe, predictable, and low-friction
• Identify and deliver improvements to the end-to-end release process (from code merge to production) to reduce risk and cycle time
• Build and evolve tooling for observability and incident response, enabling fast detection, triage, and resolution
• Proactively identify and mitigate risks in our release and infrastructure stack, including performance, reliability, and security concerns
• Define, instrument, and monitor key metrics for release engineering (e.g., deployment frequency, change failure rate, MTTR) and use them to guide improvements
• Partner with other infrastructure and product teams to debug complex production issues and drive long-term fixes
• Contribute to and champion best practices in release engineering, reliability, and operational excellence across the organization
• Mentor other engineers on the team, providing technical guidance and code reviews to elevate the overall quality of our infrastructure
• Stay up-to-date on emerging tools and practices in release engineering, observability, and SRE, and bring relevant ideas into Brex’s stack

Requirements

• 7+ years of professional experience designing, building, and operating backend or infrastructure systems in production
• Strong proficiency in backend programming languages (e.g., Go, Java, Kotlin, or Python) with a focus on reliability and performance
• Hands-on experience with CI/CD and release pipelines (e.g., GitHub Actions, CircleCI, Buildkite, Argo, Spinnaker, Jenkins) including build, test, and deployment automation
• Experience architecting and operating scalable, high-availability distributed systems on cloud platforms (e.g., AWS, GCP, Azure)
• Deep familiarity with containerization and orchestration (e.g., Docker, Kubernetes) and infrastructure-as-code (e.g., Terraform, CloudFormation)
• Experience designing and maintaining observability tooling (metrics, logs, tracing) and integrating it into incident response workflows
• Strong understanding of reliability and SRE practices, including SLIs/SLOs, error budgets, and incident management best practices
• Experience designing and optimizing data storage systems (SQL and/or NoSQL) for operational and observability use cases
• Proven track record of improving release processes (e.g., reducing deployment risk, increasing deployment frequency, automating rollbacks)
• Comfort working cross-functionally with product and other engineering teams to debug complex production issues and ship changes safely
• Strong communication and collaboration skills, including writing clear design docs and driving technical decisions across teams

Brex LLC is a wholly owned subsidiary of Capital One, N.A.

The role:

We are looking for highly talented and driven software engineers who take pride in their work, to expand our Engineering team in Brazil. Successful candidates will join a cross functional team including product managers and designers working closely with the rest of our business to deliver working code that solves real problems for both internal and external customers. You will take ownership of the problems that your team solves, ensuring a high level of quality in everything that we release, working as part of a top performing international development team. If you have a strong passion for solving problems with code, and want to work with exceptional colleagues in a high achievement environment, this role is a good fit for you. 

What you’ll do:

• Design solutions: Define the best technical solutions to business problems, contributing to an architectural vision that will scale up to be the world's leading research platform.
• Ship working code: We primarily work with React on the frontend and Kotlin microservices with Postgres on the backend, with some older services written in Ruby on Rails. We’ve always got an eye open to assess new technologies that might improve our stack.
• Deploy and iterate: We release frequently to our customers, using CIrcleCI and Spinnaker for CI/CD, and quickly gather feedback in order to inform our next iteration.
• Build your competency: You will learn quickly by building market-leading technology with experienced colleagues in a high performance environment. Engineers can also use our L&D budget to fast-track development of specific technical competencies. 
• Maintenance and troubleshooting: Carefully monitor our services, catching errors before users notice them, diagnosing the root cause and deploying fixes.

Who you are:

• You probably have a degree in a STEM subject, but we’re happy to work with people who perfected their craft via a different route.
• Experience working at a similar level in a mature Engineering team, and looking to take your career to the next level. We’re looking for people who have incredible potential.
• Technical expertise with experience working with at least one frontend framework, ideally React, as well as experience working on the backend systems. (We use Kotlin and a bit of Ruby.)
• Experience in modern AI technologies – it is a plus if you have experience with AI technologies, such as integrating LLM APIs (e.g., OpenAI SDK), building AI-assisted workflows, or leveraging AI tools to improve product capabilities and engineering efficiency.
• Proven track record – You’ve made a demonstrable impact in your previous roles, standing out from your peers.
• Highly driven and proactive – you relentlessly and independently push through hurdles and drive towards excellent outcomes.
• Meticulous – you hold high standards and have an obsessive attention to detail.

Learn more about our tech organization here! 

Don't worry if your experience or background doesn't match all of these areas, we believe a broad spectrum of experience provides great perspective on solving problems in new and innovative ways and we’d love to hear from you.

Please note that unfortunately, we are unable to sponsor visas for this position. AlphaSights is an equal opportunity employer.

*THIS IS A REMOTE POSITION EXCLUSIVELY FOR CURRENT BRAZILIAN RESIDENTS.

Who We Are

At Platform Science, we’re working to connect everything that moves. Founded in 2015, we are an open IoT platform that partners with innovative fleets, application developers, vehicle manufacturers, and equipment providers in the transportation industry to deliver revolutionary solutions to supply chain professionals across the globe. Our employees are an engaging, diverse group of people who believe in the power of great ideas. We hire people with different experiences and perspectives to build a company culture that fuels growth through innovation.

We value thoughtful actions and empathy for others.  We approach challenges with resiliency and creativity, while encouraging transparency because, no matter our backgrounds or responsibilities, we are one team.

About the Role

Platform Science is seeking a skilled and proactive Software Development Engineer in Test (SDET) to contribute to the quality of our growing software products. You will independently design, develop, and maintain automated test frameworks and test scripts. Integrating quality into our CI/CD pipeline and collaborating closely with development teams, you will play a key role in ensuring the delivery of reliable and performant software solutions.

Responsibilities

• Independently design, develop, and maintain scalable and robust test automation frameworks and test scripts using programming languages (e.g., Python, Java, Kotlin, JavaScript/Typescript, Go).
• Integrate and enhance test automation within the CI/CD pipeline for continuous testing.
• Develop and execute automated tests for various layers of the application, including unit, integration, API, and UI tests.
• Collaborate effectively with software developers to understand software design and implementation, providing valuable feedback on testability.
• Participate in code reviews to identify potential quality issues and ensure adherence to coding standards.
• Build and maintain efficient test environments and manage test data effectively.
• Analyze test results, identify root causes of failures, and work collaboratively with the development team to implement solutions.
• Contribute to the improvement of our software development and testing processes and tools.
• Advocate for quality best practices within the development lifecycle.
• Monitor and analyze key quality metrics (e.g., test coverage, defect trends) to identify areas for improvement.
• Stay updated on relevant testing methodologies, tools, and technologies, and share knowledge within the team.
• Actively participate in agile ceremonies, providing valuable input on quality and testability.
• May contribute to performance and security testing efforts under guidance.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related technical field.
• 2-5 years of experience in software development and/or test automation.
• Strong programming skills in at least one programming language (e.g., Python, Java, Go).
• Proven experience in designing and implementing test automation frameworks (e.g., Selenium, Cypress, Playwright, JUnit, TestNG, PyTest).
• Experience with API testing tools (e.g., Postman, RestAssured).
• Familiarity with CI/CD pipelines (e.g., Jenkins, Github Actions , CircleCI).
• Solid understanding of software testing principles, methodologies, and the SDLC.
• Excellent analytical, problem-solving, and debugging skills.
• Strong attention to detail and a commitment to delivering high-quality software.
• Good communication and collaboration skills, with the ability to work effectively within a team.

Preferred Qualifications

• Experience with performance testing basics (e.g., using tools like K6, JMeter).  
• Exposure to security testing concepts.
• Experience with cloud platforms (e.g., AWS, Azure, GCP).
• Experience working in an agile development environment.
• Experience with AI Tools in Software Development (Gemini, Windsurf, Claude, etc.)

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Please note: This document is a description of a potential position with our company.  Nothing within this document may be construed as an offer for employment or a promise of benefit or remuneration.  Further, any representation made within this document is subject to the laws and restrictions of the jurisdiction where employment may be deemed to occur.  The parameters and availability of this position are subject to change and based solely within the discretion of the company.  In addition, the duties, responsibilities, and scope of this position may not be fully represented in this description or may change as required by the Company.

Platform Science is an equal opportunity employer.  All applicants will be considered for employment without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status.