Senior Fullstack Engineer: Real-Time AI Auction Engine Lead

Visa Hunt; United States; On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Work-from-home stipend $100/mo

Wellness stipend $200/mo

WeWork office stipend

401(k) retirement benefits

Flexible vacation policy

Generous parental leave

Healthcare benefits (HSA)

Job summary

Alt is building a real-time, high-scale auction platform for collectibles, handling billions in GMV. As a Senior Fullstack Engineer, you'll architect the auction engine, enabling low-latency bidding and listing with AI-driven liquidity.

You'll work at the intersection of AI and high-concurrency systems, delivering personalized discoveries for buyers and powerful tools for power sellers, while mentoring the team and maintaining system reliability.

Qualifications

• 5+ years of experience building and scaling complex apps.
• Strong frontend mastery in React and TypeScript.
• Experience with personalization engines, AI/ML integrations is a plus.
• Ability to design systems with a focus on UX and scalability.

Responsibilities

• Architect high-scale bidding and listing systems.
• Develop AI-powered features for instant valuations and liquidity.
• Build personalized discovery experiences for buyers.
• Design management tools for power sellers.
• Own the end-to-end experience from backend to UI.
• Mentor the team and raise code quality and reliability.

Skills

5+ years experience

React & TypeScript

AI/ML integrations

Product instincts

Reliability under pressure

Education

Tools

Python

PostgreSQL

AWS

Job description

Alt is building a real-time, high-scale auction platform for collectibles, handling billions in GMV. As a Senior Fullstack Engineer, you'll architect the auction engine, enabling low-latency bidding and listing with AI-driven liquidity.

You'll work at the intersection of AI and high-concurrency systems, delivering personalized discoveries for buyers and powerful tools for power sellers, while mentoring the team and maintaining system reliability.