First Frontend Engineer - AI Security Platform (SF)

Petra Security; San Francisco (CA); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Equity

Healthcare

Lunch and dinners (onsite)

401K

Commuting stipend

Relocation assistance

Job summary

Petra Security is seeking a frontend engineer in San Francisco to own the frontend experience. You will collaborate with design to decide how great looks and feels, then build it into production-ready UX.

You’ll work with React, TypeScript, Node, and Python, turning rough ideas into shipped products that delight users. You will push for high-quality product experiences, focusing on performance, accessibility, and cohesive design across surfaces.

Qualifications

• Experience shipping production React apps.
• Collaborate with design to shape UI and UX.
• Strong feel for performance and accessibility.

Responsibilities

• Turn rough ideas into shipped product from Figma to production-ready UX.
• Raise the bar for product quality end-to-end (visuals, interactions, accessibility, performance).
• Prototype in code for motion, AI workflows, or dense views.
• Engage with customers and MSPs to map workflows and translate insights into UX.
• Build foundational systems with reusable primitives and component APIs.

Skills

React

TypeScript

Frontend engineering

Design collaboration

Job description

Petra Security is seeking a frontend engineer in San Francisco to own the frontend experience. You will collaborate with design to decide how great looks and feels, then build it into production-ready UX.

You’ll work with React, TypeScript, Node, and Python, turning rough ideas into shipped products that delight users. You will push for high-quality product experiences, focusing on performance, accessibility, and cohesive design across surfaces.