Why Join Us?

? 100% remote | ? General team | ⏳ Full-time

If you're looking to work on cutting-edge AI products, solve challenging problems, and be part of a fast-moving, high-talent team, you'll love it here.

Join NineTwoThree AI Studio, a remote-first product design, engineering, and marketing studio, founded in 2012 and based in Boston. We build AI-powered web and mobile apps for big brands and fast-moving startups.

You'll work with really smart people—the kind of teammates who challenge you, push you forward, and make you better. We move fast and focus on getting things done.

We've been growing 20% every year for the last 5 years, which means there's plenty of room for career growth and promotions. Our work speaks for itself—some of our customers found us through five layers of referrals. That's how much people appreciate what we do.

We run on clear processes and strong leadership, so while we move quickly, we don't do chaos. We do high-quality work, and we do it right.

We focus on products with a positive impact in various domains from sports and health,



to logistics and nuclear. But if you're into gambling, adult entertainment, or crypto, we're not your place.

Requirements

What You'll Do

Lead, not just code — Seniors at NineTwoThree don't just write great code—they lead projects, guide teams, and ensure execution quality:

Connect the dots between product vision, technical feasibility, and business needs
Communicate options, trade-offs, costs, and timelines clearly to both our team and client
Lead projects end-to-end — from technical strategy to execution
Architect solutions and apply best practices for scalable, AI-powered products
Guide and mentor engineers, ensuring quality while delivering fast
Translate business needs into technical decisions, explaining trade-offs and timelines
Solve hard problems, direct implementation, and coordinate technical challenges with clients

Who We're Looking For

True senior engineers — not just people with years of

📌 Senior Full Stack JS Engineer (España)
🏢 NineTwoThree AI Studio
📍 España