• WHO WE ARE
  • WHAT WE DO
    • Salesforce
      • Implementations
        • Sales Cloud
        • Service Cloud
        • CPQ
      • Developments
        • Salesforce Customization
        • Custom Application Development
        • AppExchange Product Development
      • Migrations
        • Classic to Lightning Migration
        • Other Systems to Salesforce Migration
      • Integrations
    • Field Service Solutions
      • Field Service for Enterprises
      • Field Service for SMBs
    • AI/ML Solutions
      • Agentic AI
    • NetSuite Consulting Services
    • App Development
  • HOW WE DO
    • Delivery Model
    • Our Works
    • Events
      • Employee Empowerment Series
      • Employee Engagement Series
      • Knowledge Sharing Sessions
  • REACH US
    • Contact Us
    • Careers
  • BLOG
    • WHO WE ARE
    • WHAT WE DO
      • Salesforce
        • Implementations
          • Sales Cloud
          • Service Cloud
          • CPQ
        • Developments
          • Salesforce Customization
          • Custom Application Development
          • AppExchange Product Development
        • Migrations
          • Classic to Lightning Migration
          • Other Systems to Salesforce Migration
        • Integrations
      • Field Service Solutions
        • Field Service for Enterprises
        • Field Service for SMBs
      • AI/ML Solutions
        • Agentic AI
      • NetSuite Consulting Services
      • App Development
    • HOW WE DO
      • Delivery Model
      • Our Works
      • Events
        • Employee Empowerment Series
        • Employee Engagement Series
        • Knowledge Sharing Sessions
    • REACH US
      • Contact Us
      • Careers
    • BLOG
  • [email protected]
  • (+91) 44-49521562
Merfantz - Salesforce Solutions for SMEs
Merfantz - Salesforce Solutions for SMEs
  • WHO WE ARE
  • WHAT WE DO
    • Salesforce
      • Implementations
        • Sales Cloud
        • Service Cloud
        • CPQ
      • Developments
        • Salesforce Customization
        • Custom Application Development
        • AppExchange Product Development
      • Migrations
        • Classic to Lightning Migration
        • Other Systems to Salesforce Migration
      • Integrations
    • Field Service Solutions
      • Field Service for Enterprises
      • Field Service for SMBs
    • AI/ML Solutions
      • Agentic AI
    • NetSuite Consulting Services
    • App Development
  • HOW WE DO
    • Delivery Model
    • Our Works
    • Events
      • Employee Empowerment Series
      • Employee Engagement Series
      • Knowledge Sharing Sessions
  • REACH US
    • Contact Us
    • Careers
  • BLOG

Custom App Development

WEB · MOBILE · BACKEND ENGINEERING

Custom Software That Picks Up Where Salesforce and NetSuite Leave Off

Portals, field apps, and integrations that your CRM and ERP were never built to handle on their own — engineered on React, React Native, and Node so your systems finally work the way your business actually runs.

Discuss Your App Idea

The Gap Between "Off the Shelf" and "Exactly What You Need"

Salesforce and NetSuite cover the 80% every business needs. The other 20% — a customer portal with your exact workflow, a mobile app your field reps will actually use, a real-time dashboard pulling from three systems at once — is where most off-the-shelf software quietly gives up. That’s the work we do.

We build on React and TypeScript for the front end, React Native with native module bridging when an app needs camera, GPS, or offline-first data sync, and Node.js with Express or Fastify for the APIs that tie it all together. Same core engineering team across web, mobile, and backend — not three vendors passing your project around.

What We Build

Three disciplines, one team — so your web app, mobile app, and backend are engineered to work together from day one, not bolted on after the fact.

feature

React JS — Web Applications

Customer portals, internal ops tools, and admin dashboards built in React with TypeScript for type safety and Next.js when SEO or server-rendering matters. Component-driven, tested, and built to scale past the first version.

mobile-app

React Native — Mobile Apps

iOS and Android from a single codebase, with native modules bridged in for camera access, GPS tracking, push notifications, and offline-first sync — the details that make a field-service or sales app actually usable on-site.

integration

Node JS — Backend & APIs

REST and GraphQL APIs, authentication and role-based access, webhook handling, and the middleware layer that connects your app to Salesforce, NetSuite, or any third-party system — built for real request volume, not a prototype.

Problems We Get Called In For

"Our NetSuite instance has drifted from how we actually work"

Years of quick fixes and ad-hoc customizations turn into a system nobody fully understands. We audit the configuration, document what’s actually there, and rebuild the parts that no longer serve you.

"Month-end close takes too long"

Usually a sign that consolidation, intercompany eliminations, or revenue recognition rules are being handled manually outside NetSuite. We move that logic into the system where it belongs.

"Our integrations keep breaking"

One-way CSV exports and brittle Zapier-style connections fail silently. We build integrations on SuiteTalk and RESTlets with proper error handling and monitoring.

Common Projects We Handle

  1. Customer or partner portals syncing live data from Salesforce or NetSuite
  2. Field service and sales rep mobile apps with offline-first data capture
  3. Internal tools replacing manual spreadsheets or end-of-life legacy software
  4. Middleware and APIs connecting systems that don’t natively talk to each other
  5. Real-time dashboards and reporting tools built around your actual metrics

Why One Team Across the Whole Stack

React and React Native share the same component model, so we build your web and mobile experience in parallel with shared logic — not two separate builds billed as one. Node on the backend keeps the entire stack in a single language, which means fewer handoffs, fewer integration bugs, and a codebase your next developer can actually understand.

More importantly: the same team that builds your app also understands how Salesforce and NetSuite work under the hood. That’s the difference between an app that “connects to your CRM” and one that’s actually engineered around it.

LET’S TALK

Have an App Idea? Let's Scope It Out.

Tell us what the system should do that your current tools can’t. We’ll tell you what it takes to build it — realistically, and without the sales fluff.

Contact Us
Merfantz Technologies is a leading Salesforce consulting firm dedicated to helping small and medium enterprises transform their operations and achieve their goals through the use of the Salesforce platform. Contact us today to learn more about our services and how we can help your business thrive.

Discover More

Terms and Conditions
Privacy Policy
Cancellation & Refund Policy
Information Security Policy

Contact Info

  • No 96, 2nd Floor, Greeta Tech Park, VSI Industrial Estate, Perungudi, Chennai 600 096, Tamil Nadu, INDIA
  • (+91) 44-49521562
  • [email protected]
  • 9:30 IST - 18:30 IST

Latest Posts

The Hidden Cost of a Poorly Built Salesforce Org July 28, 2026
The Warning Signs Your Salesforce System Needs a Cleanup July 21, 2026
Why Your Salesforce Setup Is Slowing Down Your Entire Team July 14, 2026

Copyright @2023 Merfantz Technologies, All rights reserved