Twilio
Mid
Backend engineer on Twilio's Developer Interfaces team, building SDKs and API infrastructure at scale
Twilio is hiring a Software Engineer (L2) for its Developer Interfaces team, which builds SDKs (Java, C#, Python, Go, PHP, Node.js, Ruby) and CLI tools on top of Twilio's Communications and Engagement Platform. The role requires 2-4 years of backend experience, hands-on IaC/CI-CD (Terraform, Buildkite), and on-call ownership of services handling billions of weekly requests — remote, based in select Indian states.
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What this interview tests
- Backend engineering in Python/Java with SDK/CLI generation from OpenAPI specs
- Infrastructure as Code with Terraform and CI/CD pipeline ownership (Buildkite)
- Operating high-availability microservices at billions-of-requests scale
- On-call incident response using Datadog/CloudWatch/Grafana
- Service-oriented architecture and REST API design
Common question themes
Designing or extending an SDK/CLI generation pipeline from an OpenAPI spec
Using Terraform to manage infrastructure as code
Building or debugging a CI/CD pipeline and improving deployment reliability
Walking through an on-call incident and root-causing it with monitoring tools
Making a change directly in a production system and mitigating risk
Reasoning about tradeoffs between cloud technologies for a practical, scalable choice
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