Founding Staff / Principal Engineer at Proofline

About this role

Proofline | Founding Staff / Principal Engineer | REMOTE (Worldwide, Berlin timezone overlap preferred) | Full-time | €120k-€200k + equity | https://proofline.sh/careers/founding-staff-principal-engineer/

Hi HN, I'm the founder of Proofline. We're building an infrastructure-aware AI code reviewer that catches deployment failures before they reach production. Think of it as a type checker for your cloud infrastructure. We analyze code changes against Terraform, live cloud environments, and deployment evidence rather than just reading diffs.

We're hiring a hands-on Staff / Principal Engineer to help us build. You'll own core SaaS architecture, cloud integrations, developer tools, and product delivery, with a path toward engineering leadership.

Stack: Rust, Go, PostgreSQL, React/TypeScript, Terraform, AWS, GCP.

We're looking for someone with 10+ years of hands-on infrastructure engineering experience, deep SaaS and cloud expertise, extensive use of AI coding agents, and a track record of shipping end to end.

Remote globally, flexible hours, regular Berlin visits required. Salary: €120k-€200k depending on experience and location, plus meaningful founding equity. No visa sponsorship.

To apply, ship a small feature PR to one of our open-source developer tools and email careers@proofline.sh with the link. If you have 10+ years of relevant experience and an established online presence showcasing your technical work, you can skip the PR and share your best work with us instead.

Details: https://proofline.sh/careers/founding-staff-principal-engineer/