Software Products Built to Run for Years
SaaS & Custom Software Development Company
Zunderdog builds SaaS products and custom software for startups and growing businesses in India, Japan and the USA. We also make our own: ZunderFlow, a B2B ordering platform live since 2022 and used by 50+ businesses.
Software Built the Way We Build Our Own
Some software is the product itself: a SaaS platform your customers sign up to and pay for. Some runs your business: a dealer portal, a customer portal or the internal tool that replaces spreadsheets and paper forms. We design, build, host and support both. We also connect them to the systems you already use.
We are also a product company. Our own B2B ordering platform, ZunderFlow, has run in production since 2022. We plan your software the same way: for real users, real data and years of new features after launch.
Client results
ZunderFlow
- 50+active business deployments
- 72 hrsstandard go-live time
ZunderFlow, our own B2B ordering platform: built and run by the team that builds yours, live since 2022 and used by 50+ businesses.
How we built and run our own SaaS productOur Core SaaS & Custom Software Services
What We Build
SaaS products
Platforms your customers sign up to, with accounts, roles, payments and an admin panel, from the first release to the features paying customers ask for next.
Web apps and portals
Customer portals, booking systems and dashboards that your customers, partners or team use in a browser.
Dealer and B2B ordering portals
Portals and apps where dealers and trade customers order at their own prices, with credit checks and ERP sync.
Internal tools
Survey tools, online forms and internal pages that replace manual work, like the ones we built for FIDR and Goa Livelihood Forum.
Apps for your product
Android and iOS apps on the same backend as your web app, like the three branded apps Produpak runs on ZunderFlow.
Integrations
Connections to Tally, Zoho, Razorpay, Google Maps, WhatsApp and your ERP through REST APIs and webhooks.
Why Work With a Team That Runs Its Own SaaS
Building software is half the job. Keeping it running is the other half. We have run ZunderFlow, our own B2B ordering platform, since 2022. We plan for what comes after launch: support, monitoring, updates and new features.
Proven in production
ZunderFlow is live with 50+ businesses. With it, Produpak grew revenue 30% and cut order-to-delivery time by 60% in under 90 days.
Security built in
Role-based access, audit logs, encrypted connections and each customer’s data kept apart: the same protections ZunderFlow runs on.
A founder who has built SaaS
Our founder, Zubin Souza, spent 15+ years at eBay, PayPal, Freshworks, MoEngage and SBI. He was part of Freshworks’ journey to India’s first SaaS IPO on NASDAQ and takes the first call on every project.
You own the code
When your software launches, we hand over full ownership and the source code.
Custom-Built or on ZunderFlow
If what you need is dealer or B2B ordering, ZunderFlow may already do it: if your process fits, you can be live in 72 hours under your own brand. If it doesn’t, we build custom software around the way you work. We tell you which on the first call.
What Every Project Includes
User research and testing
We talk to the people who will use it and test the design with them, including accessibility experts.
Built for everyone
Built to accessibility guidelines and in more than one language when your users need it.
Ready for busy days
Built for traffic spikes and security-tested before launch.
Your data, your country
Your data is stored in the country you choose.
Support after launch
A support contract with agreed response times keeps your software secure and up to date.
You own it
Full ownership and the source code are yours at launch.
Ways to Work With Us
| Model | How it works | Best for |
|---|---|---|
| Fixed-scope project | A defined product or first release, scoped, priced and delivered end-to-end by our team | A new product or tool with a clear brief |
| Dedicated team | Engineers who work only on your product, on your roadmap, for as long as you need them | SaaS products that keep evolving |
| Staff augmentation | Senior engineers who join your existing team and process for specific skills or extra capacity | Teams that need more hands or a missing skill |
Software for the Industries We Know Best
Non-Profits & Public Sector
Education & eLearning
Professional Services
Technologies We Build Software With
React
Next.js
Tailwind CSS
Bootstrap
HTML
CSS
JavaScript
TypeScript
- JavaScript
- TypeScript
Node.js
Java
Python
GraphQL
Ionic- React Native
Expo
MySQL
PostgreSQL
Firebase
MongoDB
SQLite
AWS
Google Cloud
Vercel
Strapi
WordPress
Sanity
Wix
Figma
Adobe Photoshop
Framer
Adobe Illustrator
How We Build Your Software
Every project starts with a call with our founder about what the software must do, who will use it and what it connects to. If we’re not the right team for it, we’ll tell you.
We agree the smallest version that is useful to real users, the screens and data it needs and a plan for what follows.
We design the screens, test them with users, then build in short cycles you can see and try as we go.
Every feature is tested and security is checked before launch. Your data goes to the country you choose.
After launch we monitor it, fix what comes up and keep adding features, under a support contract with agreed response times.
Frequently Asked Questions
A SaaS product is software you sell to many customers by subscription, each with their own account and data. Custom software is built for one business, often to run its own operations. We build both. Many products start as one and grow into the other.
You do. When your software launches, we hand over full ownership and the source code. ZunderFlow is our own product, which you use under your own brand.
Yes, if you need dealer or B2B ordering. If your process fits ZunderFlow, you can be live in 72 hours under your own brand. If it doesn’t, we build custom software around it.
Usually React and Next.js on the front end, Node.js or Python on the server and PostgreSQL or Supabase for data, hosted on AWS, Google Cloud or Vercel. ZunderFlow is built with the same tools. We pick a different one when your project needs it and explain why.
Yes. ZunderFlow connects to Tally, Zoho Inventory, Razorpay and Google Maps. We connect custom software to ERPs, CRMs, payment gateways and WhatsApp through their APIs and webhooks.
We build in role-based access, audit logs and encrypted connections, test security before launch and keep your data in the country you choose.
Yes. Our engineers can join your team for extra skills or capacity. We can also take on the whole product as a dedicated team or a fixed-scope project.
Yes. Most of our clients work with us remotely, across India, Japan and the USA. We agree call times that suit your time zone.
Tell us what your software needs to do on the contact page or book a call with our founder, Zubin Souza. Every project starts with that call. If we’re not the right team for it, we’ll tell you.
Related Services
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