Senior Full Stack Software Engineer

Protege

15d

About The Position

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. That means two products: the internal dashboard our team uses to catalog, curate, package datasets, and the customer portal where AI labs browse, stream, and evaluate content before they license 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: the ones that span both apps, cross into other squads' services, or need someone to figure out what the right product even is before building it. You'll partner with the team lead on direction and priorities, lead design on complex workflows, and raise the bar for everyone shipping in this codebase. This role is ideal for product engineers who want to design what they build, talk to the people who use it, and own features end to end.

Requirements

• 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, hold a bar for visual and interaction detail, and articulate why one UI decision beats another
• 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: streaming, pagination, caching, and knowing what not to load
• You've worked directly with the users of what you build and let that shape what you shipped
• Attention to detail without losing speed, and a bias to action
• Curious and proactive

Nice To Haves

• 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

Responsibilities

• Lead the team's larger initiatives from discovery through design, build, and rollout, such as search previews at catalog scale or the presentation of a new content modality
• Talk directly with the partnerships, solutions, and sales teams who use what you build; understand the business context behind each request and bring that view back to the team's priorities
• Design complex workflows and data-heavy interfaces yourself: information hierarchy, interaction patterns, and every state a screen can be in
• Build the workflows our partnerships and solutions teams use every day: sample creation, customer access management, and delivery exports
• Build the customer-facing experience for browsing, streaming, and evaluating multimodal samples
• Make large multimodal datasets feel instant in a browser: streaming playback, previews, lazy loading, and export at scale
• Build UI on top of embedding-based search so users can find the right clips within catalogs of millions
• Decide what runs client-side, in a route handler, or in a backend service, and work with our data teams when the answer crosses squad boundaries
• Handle sensitive data correctly: scoped access, secure share links, and PHI-aware routes
• Set the bar for quality on the squad: testing, performance, design consistency, and UX detail
• Lead design discussions, review code, and unblock other engineers
• Turn repeated one-off UI and workflow patterns into reusable components in our shared design system

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed