Senior Frontend Engineer - Growth

Role Description

The Growth team owns the surfaces that turn someone who just signed up into a paying customer who sticks around — onboarding, activation, billing, and checkout. The operating mode is simple: find the fastest path to learning, ship it, then standardize and clean up. The Growth team ships in weeks what other teams might take months to do.

• Build agent-forward onboarding.
• Turn an inbox into a CRM.
• Design experiments, not just features.
• Work across the whole app.
• Move at learning speed.
• Have ownership and autonomy.

Tech you'll touch:

• TypeScript
• React
• Vite
• Amplitude
• CSS Modules
• Storybook
• Playwright
• WebSockets
• Agent stack behind Chloe

Qualifications

• A seasoned frontend engineer.
• Fluent in experimentation.
• Experienced with B2B experiment structure.
• Building AI-powered interfaces.
• Working with AI daily.
• A builder first.

Requirements

• You've seen a variety of problems, can collaborate and self-direct.
• You understand what data points to capture in an experiment.
• You've worked in Amplitude on the implementation side.
• You've shipped LLM-backed features for real users.
• You use AI tools in your own workflow.
• You'd rather get the first iteration of a feature in front of fifty customers than spend three weeks fretting over a perfect PR.

Benefits

• We fund the use of AI tools (Claude Code, Codex, and other best-in-class developer tools).
• Treat learning and experimentation as part of the work.

Company Description

Since 2013, we’ve been building a CRM that gets out of your way and helps your team sell more, faster. Now we’re building AI into every part of it, so Close does the busywork and your team does the selling.

• We're bootstrapped and profitable.
• We have a 120-person, 100% remote team.
• We love open sourcing our code and ideas.
• AI is both how we build and what we ship.