Remote Senior Design Builder — Marketplace & AI Prototypes

Alt Platform Inc; New York (NY); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical/dental/vision coverage

Generous PTO

Parental leave

Wellness stipend

Home office stipend

DoorDash Pass

Remote-first

401(k)

Equity

Job summary

Alt Platform Inc is hiring a senior designer to own the marketplace surfaces—from listing and submission to payout—driving problem framing, metrics, and end-to-end UX. You will craft measurable, user-centered flows with AI-assisted insights, prototyping in code, and cross-functional collaboration with engineers and researchers.

A portfolio focused on problems and outcomes is essential. You will push for multiple directions, validate with users, and shape the experience and copy to build trust

Qualifications

• Proven ability to frame and solve open design problems.
• Experience shipping end-to-end design for complex products.
• Strong portfolio focused on problems and outcomes.

Responsibilities

• Own marketplace surfaces: listing, submission, bidding, and payout flows.
• Define problem frames, metrics, and success criteria before launching.
• Create prototypes in code to evaluate ideas quickly.
• Collaborate with engineers and researchers to iterate.
• Write clear, persuasive design copy and UI language.
• Balance user needs with business goals and trust considerations.
• Push for multiple directions and validate with users.
• Bring behavioral data to roadmap planning.

Skills

User research

Ambiguity resolution

Articulation

Influence

Founder experience

Code prototyping

Portfolio storytelling

Problem framing

User-centric design

Tools

Code tools

Job description

Alt Platform Inc is hiring a senior designer to own the marketplace surfaces—from listing and submission to payout—driving problem framing, metrics, and end-to-end UX. You will craft measurable, user-centered flows with AI-assisted insights, prototyping in code, and cross-functional collaboration with engineers and researchers.

A portfolio focused on problems and outcomes is essential. You will push for multiple directions, validate with users, and shape the experience and copy to build trust