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Senior Full Stack JS Engineer at NineTwoThree AI Studio. Why Join Us?. 🔹 100% remote | 🌎 Global 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.. 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 experience, but those who . own . solutions and . drive . execution.. 5+ years of experience.  in Full Stack Software Development (React, Node.js, Python, SQL). Strong knowledge of . cloud platforms.  (AWS, Azure or GCP).. Clear and thorough understanding of . design patterns.  and software development . best practices. Great communicators.  who can explain options, trade-offs, and technical details to clients and teams.. Ability to break down complex problems into manageable tasks;. Passion maintaining code style and standards and holding people accountable;. Hands-on experience with microservices architecture;. Experience with React.js, Node.js, JavaScript and Typescript (at least 5 years);. RESTful API design and implementation;. OAuth and single sign-on (SAML);. Leaders who . ensure execution quality. , push teams forward, and keep projects on track.. Strong communication and analytical skills. Relational and no-SQL databases — MySQL, PostgreSQL, Redis etc;. Solid understanding of . principles . of JavaScript/TypeScript languages. Ability to . freely express. /present/discuss ideas in English (B2-C1 level). Flexibility with working hours to participate in meetings with Eastern USA.. 🚫 . Not for you. ? If you’re looking for a pure coding role where someone else makes the decisions, this isn’t it.. Company Location: Ukraine.