[Hiring] Senior Infrastructure Engineer @Buffer

Role Description

As Buffer's next Senior Infrastructure Engineer, you'll join two seasoned Infrastructure Engineers on a small, deliberate, high-leverage team. Together, you'll run the platform that lets every Buffer engineer ship, and that indirectly lets millions of creators publish, grow, and earn a living on the social web. When our infrastructure is fast and reliable, creators get features sooner and outages less often.

• Own a meaningful slice of three shifts the team is making.
• Keeping the lights on at a higher bar.
• Make our CI/CD pipelines faster and even more anti-fragile, ship boring deploys, and turn each incident into a new lesson rather than a repeat.
• Modernizing the foundation.
• Buffer is not new, but our Infra is in continuous improvement.
• Treating engineers across Buffer as customers.

We're remote-first with a preference for at least 4 hours of overlap with EMEA time zones, but we're open to strong candidates anywhere in the world. It's an exciting time to join. Buffer is a profitable, 15-year-old company innovating at the edge of AI-assisted development, and there's lots of impactful work to do.

Who you'll work with

• Report to Miguel, the Infrastructure Engineering Manager.
• Work closely with Peter and Steven, who have helped build the infrastructure we run on since the beginning of Buffer.
• Collaborate daily with all of EPD (Buffer's unified Engineering, Product, and Design team).

What you'll be working on

• Own the day-to-day reliability of our production platform.
• Build progressive delivery into something the rest of engineering trusts.
• Build developer tools as products, instead of loose scripts.
• Reduce operational toil with AI.
• Keep the stack current.
• Improve the economics of our platform.
• Partner with EPD on the platform they build on.

Qualifications

• You've worked as an Infrastructure Engineer, SRE, "DevOps" engineer, or adjacent role for long enough to be considered senior.
• You have hands-on experience operating production Kubernetes at scale on a managed offering (GKE, EKS, AKS).
• You have AWS depth across IAM, EC2, S3, SQS, ECR, and ALBs.
• You have strong Terraform skills.
• You've operated production CI/CD with GitHub Actions (or equivalent) and GitOps via ArgoCD.
• You've built internal developer tools (CLIs, dev environments, per-PR environments).
• You have a track record of pragmatic build-vs-buy decisions on infrastructure tooling.
• You've worked with DataDog, Sentry, or similar observability stacks.
• You're comfortable with Cloudflare across Workers, Zero Trust, DNS, and the rest of their platform.
• You read and modify TypeScript or Node services well enough to upgrade runtimes and unblock teams.
• You're fluent with modern AI tools.
• You're proactive and you follow through.
• You turn ambiguity into proofs of concept.
• You thrive in remote, asynchronous environments.
• You see infra as a force multiplier for engineering, not a gatekeeper.
• You care about Buffer's customers.
• You care about performance.
• You're a generalist engineer with strong spikes.
• You create, not just consume.
• You think about infrastructure as a platform with users.
• You play the long game.
• Bonus points if you're already a Buffer user or familiar with social media management tools.

Our tech stack

• AWS, GCP, Cloudflare.
• Kubernetes on EKS, Helm for charting, KEDA for SQS-driven autoscaling.
• GitHub Actions, with self-hosted AWS runners.
• Datadog for logs, metrics, APM, and spans.
• Cloudflare across Workers, Zero Trust, DNS, and more.
• MongoDB fronted by GraphQL, Elasticsearch, Redis.
• Node.js and TypeScript across most services, Python in selected services and tooling, and PHP for legacy services.

Interview process

• Application: Apply to join the team through the form below.
• Hiring manager interview: Chat with the hiring manager for your role.
• Take-home exercise: Review a system or scenario to help us understand how you think.
• Technical interview: Interview with two Infrastructure Engineers from Buffer.
• Leadership interview: Discuss your approach to leadership with Engineering Leaders.
• Final interview: Meet with our Executive Leadership team.
• Collaboration period: Work with us on a real project over two days.
• Offer: Wrap it up with an offer and discuss the final details.