Senior MERN Architect - Remote, High-Performance Web Apps

Proxify; Town of Poland (NY); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

On-time monthly payments

Flexible withdrawal options

Remote, full-time positions

Job summary

Proxify is seeking a Senior MERN Stack Developer to architect, scale, and maintain high-throughput web applications for top clients. You will own both frontend interfaces and backend microservices, bridging user features with complex databases and cloud infrastructure.

You should have 5+ years of experience with MongoDB/Express/React/Node, strong React mastery, API design, and cloud/DevOps familiarity. CET timezone is preferred; remote full-time opportunities are offered.

Qualifications

• 5+ years of professional software engineering experience designing, building, and deploying end-to-end applications using MongoDB, Express.js, React.js, and Node.js.
• Deep mastery of React internals, hooks, state management, SSR/SSG frameworks, and performance optimization.
• Proven experience architecting scalable RESTful APIs, WebSockets, and GraphQL services; Authentication with JWT/OAuth; event-driven architectures.

Responsibilities

• Design, develop, and deploy scalable full-stack features from database schema to polished React interfaces.
• Build secure, high-concurrency microservices and web services; integrate with third-party APIs, webhooks, and real-time channels.
• Audit, profile, and optimize application throughput; reduce bundle sizes and database query load; optimize Redis caching.

Skills

MongoDB & Mongoose

Express.js

React.js

Node.js

React internals

Next.js

RESTful APIs

WebSockets/GraphQL

JWT/OAuth

Docker

GitHub Actions

AWS

Jest/RTL/Cypress

TypeScript

Tools

Docker

GitHub Actions

AWS

Next.js

Remix

Turborepo

Nx

Job description

Proxify is seeking a Senior MERN Stack Developer to architect, scale, and maintain high-throughput web applications for top clients. You will own both frontend interfaces and backend microservices, bridging user features with complex databases and cloud infrastructure.

You should have 5+ years of experience with MongoDB/Express/React/Node, strong React mastery, API design, and cloud/DevOps familiarity. CET timezone is preferred; remote full-time opportunities are offered.