Senior Full-Stack Engineer – AI-Driven eCommerce Platform

Bel USA, Llc; Town of Florida (NY); On-site; USD 140,000 - 210,000; Full time

Job summary

BEL USA is seeking a Senior Full-Stack Software Engineer to design, build, and maintain scalable software across the full tech stack for internal and external users.

You will collaborate with Product, Design, and Engineering leadership to shape direction, improve platform performance, and uphold modern development practices. Expect ownership of the full development lifecycle and strong emphasis on security and reliability.

Qualifications

• Minimum of 5 years of professional software engineering experience.
• Hands-on experience with Node.js, React, and TypeScript.
• Experience designing and implementing APIs, asynchronous patterns, and scalable back-end services.
• Strong experience with SQL and NoSQL database design, migrations, and performance optimization.

Responsibilities

• Design and build modern eCommerce services within a scalable, secure, AI-driven platform.
• Develop high-quality front-end interfaces using React or similar frameworks.
• Implement and maintain APIs, data models, microservices, and background workers.
• Design and optimize SQL/NoSQL schemas, queries, and overall data performance.
• Own the full development lifecycle: design, coding, code reviews, testing, deployment, and documentation.
• Write clean, maintainable, well-tested code aligned with engineering standards.

Skills

Node.js

React

TypeScript

API design

SQL/NoSQL

Testing (RTL/Playwright)

Education

Bachelor’s degree in computer science or related field

Tools

React Testing Library

Playwright

Job description

BEL USA is seeking a Senior Full-Stack Software Engineer to design, build, and maintain scalable software across the full tech stack for internal and external users.

You will collaborate with Product, Design, and Engineering leadership to shape direction, improve platform performance, and uphold modern development practices. Expect ownership of the full development lifecycle and strong emphasis on security and reliability.