Senior Infrastructure Engineer

Replit•Foster City, CA

2d•Hybrid

About The Position

Join our Infrastructure Engineering team and help ensure the reliability, scalability, and performance of Replit's infrastructure that serves millions of developers worldwide. As a Senior Infrastructure Engineer, you will bridge the gap between development and operations, implementing automation and establishing best practices that enable our platform to scale efficiently while maintaining high availability. We are seeking Senior Infrastructure Engineers who are passionate about building and maintaining resilient systems at scale. Your mission will be to proactively find and analyze reliability problems across our stack, then design and implement software and systems to address them. You will build robust monitoring solutions, automate operational tasks, and continuously improve our infrastructure's reliability.

Requirements

4+ years of experience in Site Reliability Engineering or similar roles (DevOps, Systems Engineering, Infrastructure Engineering).
Strong programming skills in languages like Python or Go.
You write high-quality, well-tested code.
Solid understanding of distributed systems. You've built, scaled, and maintained production services and understand service-oriented architecture.
Experience with container orchestration platforms (Kubernetes) and cloud-native technologies.
Experience implementing and maintaining monitoring/observability solutions, with strong skills in debugging and performance tuning.
Strong incident management skills with experience participating in incident response and demonstrated critical thinking under pressure.
Experience with infrastructure as code (e.g., Terraform) and configuration management tools.
Excellent written and verbal communication skills, with an ability to explain technical concepts clearly.
A willingness to dive into understanding, debugging, and improving any layer of the stack.
You're passionate about making software creation accessible and empowering the next generation of builders.

Nice To Haves

Experience with Google Cloud Platform (GCP) services and tools.
Knowledge of modern observability platforms (Prometheus, Grafana, Datadog, etc.).
Experience building reliable systems capable of handling high throughput and low latency.
Experience with Go and Terraform.
Familiarity with working in rapid-growth environments.

Responsibilities

Drive Automation and Infrastructure as Code: Build and improve automation to eliminate toil and operational work. Maintain CI/CD pipelines and infrastructure automation using tools like Terraform or Pulumi. Create self-healing systems that can automatically respond to common failure scenarios.
Optimize Performance and Infrastructure: Collaborate with core infrastructure and product teams to performance tune and optimize our cloud deployments (Kubernetes, Docker, GCP). Identify and resolve performance bottlenecks and implement capacity planning strategies.
Elevate Developer Experience: Design and implement improvements to our build, test, and deployment systems to make software delivery faster, safer, and more reliable for all engineers.
Drive Cross-Team Improvements: Partner with service owners across Replit to understand their pain points, and collaborate on implementing build/test/deploy enhancements within their specific services.
Build Shared Tooling: Create and maintain centralized tooling and automation that improves the engineering lifecycle, from local development to production monitoring.
Debug and Harden Systems: Dive deep into debugging difficult technical problems, making our systems and products more robust, operable, and easier to diagnose.
Collaborate on Design Reviews: Participate in feature and system design reviews, contributing expertise on security, scale, and operational considerations.
Build and Integrate: Write high-quality, well-tested code to meet the needs of your customers, including building pipelines to integrate with 3rd party vendors.