Front End Engineer

At Blok, we’re building the simulation engine powering the next generation of adaptive software. Our multi-agent system predicts how different types of users will respond to digital experiences before any code is shipped. Product teams use Blok to simulate onboarding flows, test risky design changes, and de-risk product bets without waiting weeks for live traffic. We’re hiring a Front-End Engineer to take ownership of our customer-facing product UI. You’ll work closely with our designers and backend team to rebuild the front-end layer on top of our simulation engine, ensuring the product is intuitive, performant, and ready to scale. This role is ideal for someone excited about complex state management, real-time data visualization, and building UIs that interact seamlessly with agent-based simulations.

Other facts

React, TypeScript, Vercel, GCP

About Blok

At Blok, we’re building the simulation engine powering the next generation of adaptive software. Our multi-agent system predicts how different types of users will respond to digital experiences before any code is shipped. Product teams use Blok to simulate onboarding flows, test risky design changes, and de-risk product bets without waiting weeks for live traffic.

Full health, dental, vision, and mental health benefits

Paid time off

Flexible hours

What you'll do

Own the design and implementation of Blok’s customer-facing product UI

Rebuild the front-end layer to tightly integrate with our simulation engine and APIs

Build interactive dashboards, data visualizations, and experiment flows that make complex simulations simple to understand

Manage complex application state and data synchronization across agents, clusters, and experiments

Collaborate closely with product design to deliver a polished, intuitive experience

Optimize performance for real-time feedback and visualization of simulation results

Contribute to engineering standards, reusable components, and front-end best practices

Our culture

• Obsessive about understanding human behavior
• Fast shipping and learning

Ready to join Blok?

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