100+
JS Full-Stack Projects
JS full-stack projects delivered
HIRE MERN STACK DEVELOPERS
Full JavaScript.Front to Back. Production-Ready.
Express.js · React · Node.js - one language across the entire stack, paired with the right database for your project. We default to PostgreSQL or MySQL for relational data, and MongoDB where document storage fits better. Custom web apps, REST APIs, real-time Socket.io, SPA, CRM, and CMS. 1-week free trial. Direct communication. Strict NDA.
1-Week Free TrialNDA on Day OneDirect CommunicationFlexible Engagement
5+
Years MERN in Production
Express · React · Node.js
AI
AI-Enabled Delivery
Cursor · Claude · Codex
15+
Global Markets
AU · UK · USA · CA + 10
The MERN Stack
JavaScript Full-Stack - Right Database for Every Project
We default to PostgreSQL or MySQL for most projects - and use MongoDB only where a document model genuinely fits.
M - PostgreSQL · MySQL · MongoDB
Database
We choose the database that fits your data model. PostgreSQL and MySQL are our defaults for most applications - structured, relational, ACID-compliant. MongoDB is used where document flexibility genuinely fits the data.
Best for
PostgreSQL/MySQL by default · MongoDB only when document model genuinely fits
What we build
- PostgreSQL (default) - Prisma ORM, complex joins, JSONB, full-text search, strong ACID
- MySQL - high-read workloads, proven reliability, broad hosting compatibility
- Prisma ORM - type-safe database access shared between Node.js and React types
- Drizzle ORM - lightweight TypeScript-native alternative for simpler schemas
- MongoDB - used when data is genuinely document-oriented (CMS, logs, analytics)
- Redis - caching layer and job queues (Bull/BullMQ) alongside the primary DB
What We Build
Development Services
End-to-End Full-Stack JavaScript
Custom web applications using the full MERN stack - MongoDB schema, Express API, React frontend, Node.js backend - built for your exact requirements.
What we deliver
- Multi-user apps with role-based access control (RBAC)
- Data-driven dashboards - React consuming Node.js / MongoDB
- E-commerce - product catalog, cart, checkout, order management
- Marketplace platforms - multi-vendor, buyer-seller, transaction management
- Booking and scheduling - availability management, reservation systems
- SaaS products - subscription billing, multi-tenancy, team management
Honest Comparison
MERN vs MEAN vs LAMP vs Laravel+React - we build with all of them and recommend based on your product, not our preference
Language Unity
MERN
JS/TS front to back
MEAN
JS/TS front to back
LAMP
PHP backend + JS frontend
Laravel + React
PHP + JS (2 languages)
Real-Time
MERN
Strong - Node.js native
MEAN
Strong - Node.js native
LAMP
Limited
Laravel + React
Good - Laravel Echo + Pusher
Database Default
MERN
Strong - PostgreSQL / MySQL
MEAN
Good - MongoDB (NoSQL)
LAMP
Strong - MySQL native
Laravel + React
Strong - Eloquent ORM
Relational Data
MERN
Strong - PostgreSQL (Prisma)
MEAN
Limited - (add PostgreSQL)
LAMP
Strong - MySQL native
Laravel + React
Strong - Eloquent ORM
Enterprise Scale
MERN
Good - NestJS needed
MEAN
Good - Angular opinionated
LAMP
Good - Mature
Laravel + React
Strong - Laravel mature
Dev Velocity
MERN
Strong - JS everywhere
MEAN
Good - Angular learning curve
LAMP
Good - PHP ecosystem
Laravel + React
Strong - Laravel DX
Our default: JavaScript full-stack (Node.js + React) paired with PostgreSQL or MySQL - not MongoDB. We use MongoDB only when the data model is genuinely document-oriented.
Why Infynno
Why Agencies and Product Teams Choose Infynno
True Full-Stack Ownership
One developer owns MongoDB schema, Express API, React frontend, and Node.js backend. Full accountability - no gap between frontend and backend that falls into nobody's responsibility.
End-to-End JS
Real-Time Specialization
Socket.io with Redis adapter, horizontal scaling, JWT WebSocket auth, room management, missed event recovery - built for production conditions, not just development.
Socket.io at Scale
AI-Enabled Development
Cursor, Claude, and GitHub Codex in the daily workflow - API scaffolding, MongoDB aggregation pipeline construction, React component generation, test writing.
CursorClaudeCodex
TypeScript Throughout
Typed Mongoose models, typed Express handlers, typed React components, typed Socket.io events. Shared types across frontend and backend eliminate API contract mismatches.
Full-Stack Types
Production at Scale
Enterprise APIs serving mobile apps across multiple countries, real-time apps with thousands of concurrent users, data-intensive dashboards processing millions of records.
Battle-Tested
Direct Communication
Your MERN developer is in your Slack, your standups, your sprint reviews. No relay chain. The person writing the code is the person you talk to.
No Middlemen
Developer Profiles
MERN Stack Developers Available to Hire
Both levels include a 1-week trial, direct communication, and NDA from day one.
Mid-Level MERN Developer
3-5 years · Production MERN applications
Node.js / Express88%
PostgreSQL / MySQL87%
React / TypeScript87%
Socket.io78%
JWT Auth Flow84%
Best for
Feature development on MERN productsAPI developmentSPA featuresCRM/CMS additionsMaintenance
Senior MERN Developer
5+ years · Large-scale production MERN
JS Full-Stack Architecture96%
NestJS / DI90%
Real-Time at Scale88%
PostgreSQL / Query Opt.93%
GraphQL / Apollo86%
Best for
Greenfield MERN architectureReal-time designCRM/CMS platformApp modernizationTechnical leadership
Tech Ecosystem
The full JavaScript stack we work with - PostgreSQL and MySQL by default, MongoDB when document storage fits, from database to UI
Database
PostgreSQLMySQL
Prisma ORMDrizzle ORMMongoDBRedis
Backend
Node.jsExpress.jsNestJSFastifyPassport.js
Real-Time
Socket.iows (native)Redis AdapterServer-Sent Events
Frontend
React 18TypeScriptRedux ToolkitReact QueryZustand
UI / Styling
Tailwind CSSAnt DesignMUIShadcn/UI
GraphQL
Apollo ServerApollo ClientGraphQL YogaDataLoader
Auth & Pay
JWTOAuth 2.0Auth0StripeRazorpay
Jobs & Files
Bull/BullMQMulterSharpAWS S3Cloudinary
Testing
JestSupertestReact Testing LibraryPlaywright
DevOps
DockerAWS EC2/SQSGitHub ActionsPM2Nginx
Engagement Models
Three ways to hire MERN stack developers
Choose the model that fits your project stage - switch any time as your needs evolve.
Dedicated Hiring
Your own AI-powered engineering team
Full-TimePart-TimeHourly
You need a product-focused team that works as an extension of your company, not just a delivery vendor. A dedicated squad of developers, QA, and project lead collaborates closely with your team, owns delivery end-to-end, and adapts as requirements evolve.
Best for
Evolving requirementsOngoing product buildLong-term partnerships
Most popular
Fixed Cost
Clear scope, agreed price, zero surprises
Outcome-basedIdeal for projects with clearly defined requirements, timelines, and budgets. We scope, price, and deliver against a fixed specification, ensuring predictable costs and transparent milestone-based execution.
Best for
Defined specificationsStructured requirementsBudget-sensitive projects
Time & Material
Build feature by feature, pay as you go
Sprint-based billingPerfect for evolving products where priorities change based on user feedback and business needs. We deliver in focused sprints, giving you the flexibility to refine the roadmap while maintaining full visibility into progress and costs.
Best for
Iterative developmentPhased roadmapsFeature-led development
Not sure which model fits? Most clients start with a 30-minute discovery call - we'll tell you honestly what we'd recommend and why.
Book a free callThe Hiring Process
From conversation to code - in 5-7 days
- Free Consultation
- NDA Signed
- Free Consultation
- NDA Signed
- Developer Matched
- Technical Interview
- 1-Week Free Trial
- Engagement Begins
Step 01
Free Consultation
Understand your full-stack requirements, real-time needs, data model complexity, and experience level.
1 / 6
FAQ
Common Questions
MERN is a full-stack JavaScript development stack: MongoDB (or PostgreSQL/MySQL), Express.js (Node.js web framework), React (frontend UI library), and Node.js (JavaScript backend runtime). At Infynno we default to PostgreSQL or MySQL for most MERN projects - using MongoDB only where a document model genuinely fits the data. JavaScript runs across the entire stack from database through API to UI.
India has experienced MERN developers with strong JavaScript skills, English communication, and significantly lower rates than USA, UK, or Australian equivalents. Infynno's MERN developers have shipped real-time applications, enterprise APIs, and SPA products for clients across 6+ countries.
Yes. Real-time application development is a specific MERN service at Infynno. We implement Socket.io with room management, JWT WebSocket authentication, Redis adapter for horizontal scaling, and reliable reconnection handling - chat applications, live dashboards, collaborative tools, and notification systems.
Yes. We execute migrations from PHP/Laravel, Python/Django, Java Spring, and legacy Node.js to modern MERN architecture. Frontend migrations from AngularJS, Angular, jQuery, and server-rendered templates to React are also supported. Migrations use a phased strangler-fig approach - the existing application stays live throughout.
Your matched MERN developer works on a real task - a Node.js API endpoint, a React component, a Socket.io feature, or a MongoDB schema - for one week. You evaluate code quality, TypeScript usage, architecture decisions, communication, and velocity before any long-term commitment.
Yes. TypeScript is the default - Prisma-generated types for PostgreSQL/MySQL (typed models, typed queries), typed Express handlers, typed React components, typed Socket.io events, typed Redux slices. Shared TypeScript interfaces between Node.js and React eliminate API contract mismatches - the most common source of full-stack bugs.
Three models: full-time dedicated (160 hrs/month), part-time dedicated (80 hrs/month), and hourly (as needed). All include direct developer communication, strict NDA, 1-week trial option, and monthly reporting.
Ready to Hire?
Ready to Hire a Dedicated MERN Stack Developer?
Free consultation - we understand your full-stack requirements and match you with the right developer. 1-week free trial. NDA before we go further.
Strict NDA1-Week Free TrialDirect CommunicationFlexible Models