Senior MERN Lead: Full-Stack Architect (Remote)

United States Digital Space LLC; United States; Remote; USD 120,000 - 160,000; Full time

Benefits offered by this job

Get paid, not played

Predictable project hours

8-hour working days

Flex days (up to 24 days/year)

Job summary

United States Digital Space LLC is seeking a Senior MERN Stack Developer with heavy React.js and Node.js focus to architect, scale, and maintain high-throughput web applications. You will own front-end UIs and back-end microservices, bridging complex databases with cloud infrastructure to deliver secure, responsive products.

Ideal candidates have 5+ years of experience building end-to-end apps using MongoDB, Express.js, React.js, and Node.js, with strong JavaScript and TypeScript skills, and

Qualifications

• 5+ years designing, building, and deploying end-to-end apps with MongoDB, Express.js, React.js, and Node.js.
• Proficiency in modern JavaScript (ES6+), TypeScript, asynchronous programming, and memory management.
• Deep mastery of React internals, hooks, component design, and state management (Redux Toolkit or similar).
• Experience architecting scalable RESTful APIs, WebSockets, and GraphQL services.
• Knowledge of authentication protocols (JWT, OAuth2) and middleware design.

Responsibilities

• Design, develop, and deploy scalable full-stack features from initial database schema to polished React interfaces.
• Build secure, high-concurrency microservices and web services, integrating with third-party APIs, webhooks, and real-time channels.
• Audit, profile, and optimize throughput; reduce bundle sizes and database query overhead; tune caching layers (Redis).
• Lead architectural discussions, write modular TypeScript code, enforce tests, and conduct peer reviews.
• Collaborate with cloud/DevOps to containerize apps, set up automated deployments, and monitor systems.

Skills

MERN Stack

React.js

Node.js

TypeScript

JavaScript ES6+

RESTful APIs

GraphQL

WebSockets

JWT

OAuth2

CI/CD

AWS

Tools

Docker

GitHub Actions

AWS

CI/CD

Job description

United States Digital Space LLC is seeking a Senior MERN Stack Developer with heavy React.js and Node.js focus to architect, scale, and maintain high-throughput web applications. You will own front-end UIs and back-end microservices, bridging complex databases with cloud infrastructure to deliver secure, responsive products.

Ideal candidates have 5+ years of experience building end-to-end apps using MongoDB, Express.js, React.js, and Node.js, with strong JavaScript and TypeScript skills, and