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Act Security is an action-first cloud security platform built for the AI era. The company addresses the problem of accumulated unused access in cloud environments—a vulnerability that AI-powered attacks now exploit at scale faster than human teams can respond. Act systematically shrinks the access surface across cloud infrastructure by reasoning across identity, network, and AI access control planes together, enforcing boundaries through native cloud controls without requiring new agents or deployments.
The company is early-stage, well-funded, and moving fast. It was founded by repeat security operators who previously created Medigate (acquired by Claroty). The culture emphasizes three core values: Win (ambitious goals and high standards), Learn (from customers, peers, and mistakes), and Have Fun (believing great work happens when people enjoy collaboration).
As a Frontend Engineer, you will own the user-facing experience of the cloud security platform. You'll design and build a fast, intuitive, data-dense web application that enables security teams to understand and act on complex cloud access data at a glance.
Key responsibilities include:
- Design and build a modern, responsive web application using React and TypeScript
- Translate complex security and cloud data into clear, actionable, and intuitive UI/UX
- Build reusable component libraries and design systems that scale across the product
- Work closely with Product and Design to turn concepts into polished, production-ready features
- Optimize application performance, especially around large, data-heavy views (graphs, tables, dashboards)
- Collaborate with backend engineers to define clean, efficient APIs
- Leverage AI tools as part of your daily workflow—the company builds with AI, not just for AI
- Improve the codebase, tooling, and engineering practices as the team grows
You'll have real ownership in an early-stage company where engineers drive decisions. The environment is AI-native: you'll help customers secure their AI workloads, build intelligent automation into the product, and use AI tools daily as part of the build and ship process. The team includes founders with deep security and product experience, backed by leading investors. The package includes competitive salary, meaningful equity, and the upside of joining early.
REQUIREMENTS:
- At least 5 years of hands-on frontend development experience
- Strong proficiency in React and TypeScript, with deep understanding of modern frontend architecture
- Experience building complex, data-heavy UIs (dashboards, visualizations, tables at scale)
- Strong sense of UI/UX and attention to detail
- Familiarity with state management, testing, and performance optimization in large frontend codebases
- Experience working closely with backend and design teams
- Strong sense of ownership, clear communication, and ability to move fast without cutting corners
