Frontend Engineer

CIRCL; San Francisco (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

CIRCL is seeking a Frontend Engineer in San Francisco to build the next generation of logistics software. You’ll craft intuitive interfaces for operations teams to manage complex supply chains and visualize real-time data, enabling quick, informed decisions.

You will work with React and TypeScript, implement polished user experiences with modern CSS, and contribute to performance optimizations. If you enjoy collaborating across disciplines and delivering high-quality frontend code, join us.

Qualifications

• 3+ years of frontend development experience.
• Expert-level React and TypeScript skills.
• Experience with modern CSS and responsive design.
• Understanding of web performance optimization.
• Familiarity with testing frameworks (Jest, Cypress, etc.).
• Strong eye for design and attention to detail.

Responsibilities

• Build responsive, performant web applications using React and TypeScript.
• Create data visualizations for real-time logistics operations.
• Collaborate with designers to implement polished user experiences.
• Optimize application performance and bundle sizes.
• Write comprehensive tests and maintain code quality.
• Participate in code reviews and technical discussions.

Skills

React

TypeScript

CSS

Web performance

Testing (Jest/Cypress)

Tools

Jest

Cypress

D3.js

Chart.js

Mapbox

Leaflet

WebSockets

Job description

We're looking for a Frontend Engineer to help us build the next generation of logistics software. You'll create intuitive interfaces that help operations teams manage complex supply chains, visualize real-time data, and make critical decisions quickly.

What you'll do

• Build responsive, performant web applications using React and TypeScript
• Create data visualizations for real-time logistics operations
• Collaborate with designers to implement polished user experiences
• Optimize application performance and bundle sizes
• Write comprehensive tests and maintain code quality
• Participate in code reviews and technical discussions

What we're looking for

• 3+ years of frontend development experience
• Expert-level React and TypeScript skills
• Experience with modern CSS and responsive design
• Understanding of web performance optimization
• Familiarity with testing frameworks (Jest, Cypress, etc.)
• Strong eye for design and attention to detail

Nice to have

• Experience with data visualization (D3.js, Chart.js, etc.)
• Knowledge of mapping libraries (Mapbox, Leaflet)
• Experience with real-time applications (WebSockets)
• Background in logistics or operations software