Senior Product Engineer (DevTools & AI reliability, remote)

(Fully remote, async-first, DevTools SaaS, 32-40h/week, time zones: UTC-3 to UTC+3)The best developers don't wait for a customer to tell them something's broken.They catch it first, in the pull request, in staging, or in the checkout flow at 3am, before a single user notices. That instinct is Checkly's whole reason to exist. We give developers and their agents the tools to own reliability the way they own their code: end-to-end tests and synthetic monitoring defined as code, powered by OpenTelemetry and Playwright, versioned and reviewed like everything else they ship. From pull request to post-mortem, in one place.Thousands of them, from modern AI companies like Mistral and resolve.ai to large engineering orgs like LinkedIn, Citi, and 1Password, build with us. In 2024 we raised $20M in Series B funding from Balderton, CRV and Accel.Here's the thing about 2026: AI agents and coding assistants are shipping more software, faster, than any team could review by hand, and more of it is breaking in ways nobody has seen before. LLM-backed features fail probabilistically. Agents take actions no runbook anticipated. "Is my app healthy?" is becoming an unanswerable question for a whole generation of AI-native software. You will build reliability for this kind of software.Our stack is AI (Codex, Claude, use what you like best), Vue.js, TypeScript, Node.js, Golang, Postgres, ClickHouse and AWS. We ship to prod all day, every day. We practice Agile (not scrum) and take pride in good documentation and good looking products.We’re a remote-first startup that keeps things simple—low on meetings, high on productivity, and always shipping. If you love building cool things, working async, actually listening to and working with customers, and keeping it lean, you’ll fit right in!What you'll doBuild and ship with AIYou will actively use coding agents for full stack development, from exploring solutions and generating scaffolding to refactoring, test generation and debugging. At Checkly w