Senior Full Stack JS Engineer

Stack

Responsibilities

• ▹Lead projects end-to-end, from technical strategy to execution
• ▹Connect product vision, technical feasibility, and business needs
• ▹Communicate options, trade-offs, costs, and timelines clearly to the team and clients
• ▹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

Requirements

• ▹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
• ▹Ability to break down complex problems into manageable tasks
• ▹Passion for maintaining code style and standards
• ▹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)
• ▹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

Soft skills

What we offer

• ▹20 days-off per year during the first 3 years, increasing to 25 days in later years
• ▹Paid sick leave, 10 national holidays and 2 company days-off

About the company

NineTwoThree AI Studio is a remote-first product design, engineering, and marketing studio, founded in 2012 and based in Boston, building AI-powered web and mobile apps for big brands and fast-moving startups; growing 20% every year for the last 5 years.