Senior Full‑Stack Engineer: Lead Platform & Global Growth

Lean Solutions Group; United States; On-site; USD 120,000 - 180,000; Full time

Job summary

Lean Tech seeks a Senior Full Stack Developer to design, build, and optimize modern web apps and distributed systems. You will architect scalable cloud‑native solutions, lead frontend and backend work, and drive engineering excellence with best practices.

The ideal candidate combines deep TypeScript expertise with experience in React/Next.js, Node/Express, and API design. Familiarity with AI integration, Docker, AWS, and performance profiling is highly valued.

Qualifications

• 6+ years of experience in Full‑Stack (Backend‑Frontend) TypeScript development.
• Extensive experience building scalable full‑stack applications and microservices using React, Next.js, Node.js, Express, HTML, and CSS.
• Strong knowledge of RESTful API design and OpenAPI specifications.
• Experience designing and integrating APIs, including REST and modern data‑fetching patterns.
• Extensive experience with relational DBs like MySQL or Postgres and noSQL like MongoDB/Redis.

Responsibilities

• Design, develop, and optimize modern web applications and distributed systems across the full stack.
• Architect scalable solutions and cloud‑native applications, driving engineering excellence.
• Lead and mentor teams, implement best practices, and ensure performance through profiling.
• Integrate AI agents and LLM APIs into production or near‑production systems.

Skills

TypeScript

Full‑stack

REST APIs

OpenAPI

Performance optimization

AI integration

Architectural thinking

Cloud-native

AWS

Ecommerce/retail

Tools

React

Next.js

Node.js

Express

HTML/CSS

Webpack

Docker

LLM APIs

Job description

Lean Tech seeks a Senior Full Stack Developer to design, build, and optimize modern web apps and distributed systems. You will architect scalable cloud‑native solutions, lead frontend and backend work, and drive engineering excellence with best practices.

The ideal candidate combines deep TypeScript expertise with experience in React/Next.js, Node/Express, and API design. Familiarity with AI integration, Docker, AWS, and performance profiling is highly valued.