Founding Product Engineer (Frontend)

Overview

Confident AI is building the infrastructure that makes AI trustworthy. Engineering teams spend hours a day inside our platform looking at traces, evals, and test results — the frontend isn't a layer on top of the product. It is the product.

We're hiring a Founding Product Engineer to own that product end-to-end. You'll talk to users, decide what gets built, design the UI yourself, and ship it — from the component layer down to the API routes that power it. No PM writing specs, no designer handing you mocks.

As a founding engineer, the quality bar you set and the interfaces you ship will be the reason engineering teams choose us over the alternatives.

What you'll be doing

• Own user-facing features from product decision to design to shipped code. You make the design calls — there are no Figma files waiting for you.
• Build data-dense, fast, polished interfaces for traces, evaluation results, and testing workflows — the screens our users live in every day.
• Talk to users, understand their workflows, and turn what you learn into product decisions. You're the engineer in the room closest to the customer.
• Work across the stack. Most of your time is in the frontend, but you'll write the API routes, queries, and server logic your features need without waiting on anyone.
• Architect the frontend to last – the components, state management, and patterns you establish need to hold up as the product and team grow around them.
• Set the standard for product quality and user experience that every engineer we hire after you builds to.

Your work will

• Be the reason our platform feels like the best product in AI infrastructure, not just the most capable one.
• Own the user experiences that engineering teams interact with for hours every day.
• Set the product engineering bar the rest of the team builds to as we scale from seed to market leader.

• 3+ years building production web applications, ideally at a fast-moving product company or startup.
• Deep proficiency with React, Next.js, TypeScript, and CSS. You don't reach for a UI library because you can't write the styles yourself — you reach for one when it's the right call.
• A genuine eye for design. You notice when spacing is off by 2px, you have opinions on motion and hierarchy, and you can take a feature from idea to polished UI without a designer.
• You understand frontend at scale – rendering performance, state management, data fetching, and architecture that doesn't collapse as the product grows.
• Enough backend fluency to move fast – databases, APIs, caching, auth. You won't be scaling them, but you build against them confidently.
• Fluent with AI coding tools like Claude Code and Cursor as part of your daily workflow. At our size, every engineer operates at a multiplied level.
• You think in user experiences, not components. The question you ask is 'what should this feel like to use,' not 'what props does this take.'
• High-agency and comfortable with ambiguity. We're seed-stage — you identify what matters, make a plan, and ship.

• Full ownership: you decide what gets built and how it feels, and you ship it yourself.
• A seat at the table: direct access to the founding team at the stage where every product decision compounds.
• The problem: you'll work on what makes all other AI work trustworthy. The impact ceiling is massive.