Senior Software Engineer building Brex's release engineering, observability, and incident-response infrastructure

Design, build, and operate the core systems powering Brex's deployment pipelines, observability, and incident management. Requires 7+ years of backend/infrastructure experience with hands-on CI/CD, Kubernetes/Docker, infrastructure-as-code, and SRE practices like SLIs/SLOs and error budgets. San Francisco hybrid, 3 days/week in office.

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What this interview tests

CI/CD and release pipeline design (build, test, deploy automation)
Observability instrumentation tied to incident response
Kubernetes/Docker and infrastructure-as-code (Terraform/CloudFormation)
SRE practices: SLIs/SLOs, error budgets, MTTR
Reducing deployment risk and change failure rate at scale
Mentorship and driving release engineering best practices across teams

Common question themes

Describe a release pipeline you built or improved — how did you measure the impact?

How would you design observability tooling that feeds directly into incident triage?

Walk me through your experience with Kubernetes/Docker and IaC in production

How do you define and enforce SLIs/SLOs and error budgets for a platform team?

Tell me about a complex production incident you debugged cross-functionally

How do you mentor engineers on release engineering and reliability practices?

How candidates describe it

Real Senior Software Engineer interview stories — retold from candidates' public write-ups, with sources.

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