# Senior Full Stack JS Engineer

> NineTwoThree AI Studio · Ukraine (Remote) · — · Posted 2025-10-24

**Workplace:** remote

**Department:** Engineering

## 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 paid vacation: **20 days-off** per year during the first 3 years, further increasing to **25 days** in later years.
-   Paid sick leave, **10 national holidays** and **2 company** days-off.
-   **Well-being** budget.
-   **Maternity/paternity** leave.
-   Accounting assistance.
-   Reimbursement of expenses for professional development **courses/certifications** (up to 100% in agreement with the Manager).
-   Hardware upon business needs.
-   Strong positive **engineering culture**, a tightly-knit team of professionals with a **good sense of humor**.  
    

### What’s The Process

We make the process fast and responsive. Short HR interview, Technical Q&A, Hands-on Practical Session (no bubble sorts), CTO interview (sometimes), Offer.

  
**Apply now** and lead the next generation of AI-powered products.

## Apply

[Apply at NineTwoThree AI Studio](https://apply.workable.com/ninetwothree-ai-studio/j/29CB39FF3D/apply)

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