Senior Full Stack Software Engineer

Role Description

Protege is hiring a Senior Software Engineer for our Presentation team, the squad that builds the surfaces where Protege's data catalog meets the people who use it. This is a product engineering role in a TypeScript and Next.js codebase. You'll talk directly with the people who use what you build, design the interfaces yourself, and ship the whole feature: UI, API, data model, and tests.

The datasets behind these screens are large and multimodal (video, audio, motion capture, documents, medical imaging), so a lot of the craft is making that volume feel fast, legible, and good to use in a browser.

As a senior engineer, you'll take on the largest and most ambiguous initiatives on the team:

• Lead the team's larger initiatives from discovery through design, build, and rollout.
• Talk directly with the partnerships, solutions, and sales teams who use what you build.
• Design complex workflows and data-heavy interfaces yourself.
• Build the workflows our partnerships and solutions teams use every day.
• Build the customer-facing experience for browsing, streaming, and evaluating multimodal samples.
• Make large multimodal datasets feel instant in a browser.
• Build UI on top of embedding-based search.
• Decide what runs client-side, in a route handler, or in a backend service.
• Handle sensitive data correctly.
• Set the bar for quality on the squad.
• Lead design discussions, review code, and unblock other engineers.
• Turn repeated one-off UI and workflow patterns into reusable components.

Qualifications

• 5+ years building production web applications that real users depend on.
• Deep TypeScript and React experience, with Next.js or a comparable full-stack framework in production.
• You've shipped user-facing features end to end: UI, API, data model, and tests.
• Strong design judgment: you can design a complex workflow yourself.
• Solid backend fundamentals: API design, Postgres, auth and permission modeling, and cloud services (we use AWS).
• You've built data-heavy or media-heavy interfaces and know how to keep them fast.
• You've worked directly with the users of what you build.
• Attention to detail without losing speed, and a bias to action.
• Curious and proactive.

Requirements

• Experience with media playback in the browser (HTML5 video/audio, HLS, containers and codecs).
• Experience building UX over embeddings or vector search.
• A portfolio, side projects, or shipped work that shows your design taste.
• Experience building or maintaining a design system across multiple apps.
• Familiarity with auth systems (we use Clerk) and permission modeling.
• Experience working with sensitive or regulated data (HIPAA, PHI).
• Prior startup experience as a founding or early engineer.

Benefits

• Competitive salary and equity options.
• Flexible working hours and remote work options.
• Health, dental, and vision insurance.
• Professional development opportunities.
• Collaborative and inclusive work environment.

Company Description

We are building Protege to solve the biggest unmet need in AI — getting access to the right training data. The Protege platform facilitates the secure, efficient, and privacy-centric exchange of AI training data.

We’re a lean, fast-moving, high-trust team of builders who are obsessed with velocity and impact. Our culture is built for people who thrive on ambiguity, own outcomes, and want to shape the future of data and AI.