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Senior Full Stack JS Engineer

NineTwoThree AI Studio
CompanyNineTwoThree AI Studio
CategoryEngineering
LocationUkraine
RemoteRemote
EmploymentNot stated
LevelSenior
SalaryNot stated by the employer
Posted26 Jun 2026
Last verified30 Jul 2026
SourceEmployer career page (workable)
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Description
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. 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 experience, but those who  own  solutions and  drive  execution. 5+ years of experience  in Full Stack Software Development (React, Node.js, JavaScript, TypeScript, 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. Benefits What We Offer Annual pa
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