Senior Fullstack Software Engineer (Consumer Web Product)

Sr. Software Engineer (Fullstack) San Francisco, CA | On-site 5 days/week | Full-time Salary: $200K–$400K + Competitive Equity Visa: Open to OPT and H-1B transfers

Build a Consumer Web Product From 0→1 We are looking for a Senior Fullstack Software Engineer to build the web platform for Rips, our fast-growing collectibles trading card app. You’ll own major parts of the web stack, establish frontend standards, and ship a polished consumer product from the ground up.

This is a high-agency, product-focused role for an engineer who can move quickly, make strong technical decisions, and turn designs into exceptional user experiences. What You’ll Do

• Build and launch the Rips web experience from 0→1.
• Own frontend architecture, standards, and best practices using React + TypeScript.
• Build polished, responsive interfaces with animations, motion, and micro-interactions.

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• Partner with backend engineers on APIs, data models, and performance.
• Own internal tools and dashboards that improve operational efficiency and decision-making.
• Help establish the foundation for future web, Android, and React Native products.

What We’re Looking For Required:

• 5+ years of fullstack/web engineering experience.

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• Deep expertise in React, TypeScript, and modern JavaScript.
• Shipped a 0→1 consumer web product at a startup — this is a dealbreaker.
• Experience owning frontend architecture/platform standards for a consumer-facing product.
• Strong product sense and ability to independently translate Figma designs into pixel-perfect, production-quality UI.
• Experience building performant, responsive interfaces with motion/animation.
• Ability to self-prioritize, make decisions, and ship quickly in an ambiguous startup environment.
• Willingness to work on-site in San Francisco 5 days/week.

Nice to have:

• Experience with real-time features, payments, marketplaces, gaming, or collectibles.
• React Native/mobile experience.
• Experience collaborating on API design and data modeling.

Important This role is not a fit for candidates whose experience is primarily large-scale Big Tech, B2B enterprise, or healthcare software without demonstrated 0→1 consumer startup product ownership.