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UI MERN Stack Developer (100% Onsite)

Galaxy i Technologies, Inc.
Sunnyvale, CA Contractor
POSTED ON 7/21/2026 CLOSED ON 8/21/2026

What are the responsibilities and job description for the UI MERN Stack Developer (100% Onsite) position at Galaxy i Technologies, Inc.?

Job Title: UI MERN Stack Developer (100% Onsite) 
Location : Sunnyvale, CA
 
JD :
100% Onsite role

Job Title: UI MERN Stack Developer

Role Descriptions:

• Strong experience in JavaScript, TypeScript and MERN (MongoDB, Express.js, React.js, Node.js) with strong knowledge in front-end architecture and performance optimization and good experience with back-end and data management.
• Experience with Redix
• Good hands-on experience with State Management
• Experience with Node.js Event Management
• Good hands-on experience with Multi-Threading aspects
• Redis
• Apache Kafka
• Node NPM, Node.js
• MongoDB
• Microservices
• API Automation
• Kubernetes, Docker
• Experience with AWS

1.Strong experience in JavaScript| TypeScript and MERN (MongoDB| Express.js| React.js| Node.js) with strong knowledge in front-end architecture and performance optimization and good experience with back-end and data management.
2.Build robust backend services using Node.js| ExpressJS
3.Develop and maintain RESTFul APIs and Event Driven services.
4.Good experience with Node.js Event Management.
5.Deep understanding and experience with component architecture and state management.
6.Strong experience with Node NPM Ecosystem.
7.Expertise in React & Core JavaScript: Deep understanding of React fundamentals| including components| props| state| etc. Expertise in advanced JavaScript features| asynchronous programming (promises| async/await) | and TypeScript.
8.Asynchronous Programming & Multi-threading: Very good hands-on experience with asynchronous patterns (callbacks| Promises| async/await) in JavaScript. To add-on| good experience of Node.js event management (event loop and how to leverage its single-thread operations efficiently). Understanding of utilizing built-in libuv thread pool for CPU-intensive tasks| even though JavaScript code runs on a single thread.System Design and Architecture:
9.Strong experience building/designing distributed systems leveraging Apache Kafka (Producers| Consumers| Streams) - also for asynchronous programming.
10.Implement Caching strategies using Redis to optimize performance
11.Build and design scalable microservices also ensuring high availability
12.Experience with Event-Driven and streaming architectures API and Automation.
13.Experience building and maintaining API automation Cloud and CI/CD
14.Deploy and manage services using Kubernetes
15.Work with CI/CD pipelines for automated build| test and deployment Data and Messaging.
16.Strong experience with MongoDB for including advanced querying| indexing for performance and sharding aspects for scalability.
17.Build real-time and batch pipelines using Kafka.
18.Handling data consistency and performance tuning Performance and Reliability.
19.Optimize front-end performance (lazy loading| code splitting| caching)
20.Experience with improving back-end performance and scalability under high load

 
Interested candidates share updated resumes geo at galaxyitech dot com

Hourly Wage Estimation for UI MERN Stack Developer (100% Onsite) in Sunnyvale, CA
$55.00 to $72.00
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