Build a Web Application Around Your Business, Not Around a Template
From SaaS products and customer portals to enterprise platforms, CRM/ERP systems and AI-powered applications, D2i Technology designs, develops, tests and supports custom web applications built around how your business actually works.
What we build
- SaaS platforms Multi-tenant, subscription-ready products
- Customer and partner portals Secure self-service for the people you work with
- Enterprise and internal platforms Replace spreadsheets with one source of truth
- CRM and ERP systems Sales, inventory, HR and finance in one place
- Marketplaces Multi-vendor onboarding, payments and search
- AI-powered applications Automation, document processing and recommendations
- 85+ Web apps delivered
- 17+ Years of engineering experience
- ISO 27001 Certified information security
- ISO 9001 Certified quality management
- India + USA Global delivery
What Are You Looking to Build?
Pick the one closest to your project and see how we would approach it.
Build a scalable SaaS platform with subscriptions, multi-tenancy and integrations.
Give customers, partners or vendors a secure place to manage information, transactions and workflows.
Replace spreadsheets and disconnected systems with a centralized application.
Build multi-vendor platforms with onboarding, payments, search, reviews and workflows.
Add AI agents, automation, recommendations, document processing or intelligent workflows.
Improve performance, architecture, UX, security or maintainability without rebuilding everything.
Not sure which one fits your project? Talk to an expert and get a clear recommendation.
Speak to an ExpertBuilding: SaaS Product
What this usually includes
- Multi-tenant architecture and role-based access
- Subscription billing and payment gateways
- Admin dashboards, analytics and audit trails
- APIs and third-party integrations
A good first step
A discovery workshop to agree the MVP scope, tenancy model and billing approach before any code is written.
Building: Customer / Partner Portal
What this usually includes
- Secure sign-in, SSO and permissions by role
- Self-service requests, documents and approvals
- Integration with your CRM, ERP or billing system
- Notifications, reporting and activity history
A good first step
Map who uses the portal, what they need to do without calling you, and which systems hold the data.
Building: Internal Business Platform
What this usually includes
- Workflow automation and approval chains
- Role-based access with audit trails
- Dashboards and reporting across teams
- Integration with the systems you already run
A good first step
Walk through the current spreadsheets and handoffs to find the workflows that cost the most time.
Building: Marketplace
What this usually includes
- Buyer and seller onboarding
- Payment split and payouts
- Advanced search, ratings and reviews
- Admin tools for moderation and disputes
A good first step
Define the supply and demand sides, the revenue model and what must work on day one.
Building: AI-Powered Application
What this usually includes
- AI agents and chat interfaces
- Document and data extraction pipelines
- Recommendations and predictive dashboards
- Human review steps where accuracy matters
A good first step
Pick one workflow where AI measurably helps and prove it with a small, testable prototype.
Building: Existing Application Needs Modernization
What this usually includes
- Architecture and code review
- Incremental upgrade path with no data loss
- Performance, security and accessibility fixes
- Automated tests to make future changes safe
A good first step
A technical assessment of what is slowing you down, so you can decide what to fix and what to leave alone.
Types of Web Applications We Build
End-to-end custom web application development, from first prototype to production support
SaaS Applications
Launch a Software-as-a-Service product built to handle thousands of concurrent users.
- Multi-tenancy
- Subscription billing
- Cloud-native
Enterprise Web Apps
Secure applications with workflow automation that fit into your existing IT ecosystem.
- Role-based access
- Audit trails
- Integrations
CRM / ERP Systems
Centralize your sales pipeline, inventory, HR and finance in a single source of truth.
- Sales pipeline
- Inventory
- Finance and HR
Marketplace Platforms
Multi-vendor platforms for B2B, B2C or peer-to-peer business models.
- Seller onboarding
- Payment split
- Search and reviews
AI and Automation Apps
Applications powered by AI, ML and intelligent automation.
- Chatbots
- Data extraction
- Predictive dashboards
Legacy Modernization
Upgrade outdated systems without disrupting operations or losing data.
- Zero data loss
- Phased migration
- Cleaner architecture
Portals and Dashboards
Customer, partner and vendor portals with reporting your teams will actually use.
- Self-service
- Live reporting
- SSO
Industry Platforms
Healthcare, e-learning, fintech, logistics and booking systems built around domain rules.
- Healthcare
- E-learning
- Booking and logistics
Built for Real Business Problems
Real engagements, real outcomes. Every result below comes from a documented client case study.
Building a CA Services Marketplace for MyTaxProf
MyTaxProf set out to connect clients with Chartered Accountant (CA) firms through one digital platform. D2i Technology built a custom, multi-role CA services marketplace covering service discovery, firm onboarding and verification, and structured service requests.
Read Full Case Study of Building a CA Services Marketplace for MyTaxProfWebsite Redesign at New Life Agency
New Life Agency needed a modern, professional website that truly reflected their reputation. D2i Technology redesigned their digital presence from the ground up — delivering a faster, more intuitive, and fully responsive experience built to support their continued growth.
Read Full Case Study of Website Redesign at New Life AgencyDevOps Transformation at ZiffyCar
ZiffyCar's peer-to-peer car rental marketplace was expanding fast — 50+ cities, thousands of hosts, and booking traffic that spiked hard every weekend. D2i Technology built the DevOps foundation to match that growth, turning a fragmented, contractor-heavy delivery model into a streamlined pipeline that achieved 10× faster releases and a 40% reduction in DevOps spend.
Read Full Case Study of DevOps Transformation at ZiffyCarWhy Businesses Choose Custom Web Applications
A custom web application is built around your workflows, not generic off-the-shelf software. As a Custom Web App Development Company in India, we build for clients across the USA, UK, Australia and beyond.
Fit your workflow
No forcing your business into someone else's process.
Integrate your systems
APIs, CRM, ERP, payment gateways and third-party platforms.
Scale as you grow
Architecture designed around expected users, data and complexity.
Own your product
Your application, your workflows, your data and your roadmap.
Accessible from the start
WCAG accessibility is part of design, development and QA, not an afterthought.
When Does Custom Development Make Sense?
Custom is not always the answer. Here is how we would think about it.
| If you need... | Consider... |
|---|---|
| Standard business functionality | Off-the-shelf software |
| Unique workflows | Custom application |
| Multiple systems connected | Custom application with integrations |
| A SaaS product | Custom SaaS platform |
| AI built into a core workflow | AI-native custom application |
| An existing legacy system | Modernization |
From Idea to Production
A proven 6-stage process that turns your vision into a production-ready web application
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Step 01
Discover
Understand your users, business goals, workflows and technical constraints.
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Step 02
Design
UX, UI, architecture and clickable prototypes.
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Step 03
Build
Agile development with code reviews and continuous integration.
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Step 04
Test
Functional QA, automation, performance, security and accessibility.
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Step 05
Launch
Cloud infrastructure, CI/CD and production deployment.
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Step 06
Improve
Monitoring, maintenance, optimization and new features.
What Happens After You Contact D2i?
No big commitment up front. Here is what the first few weeks look like.
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Step 1: 30-minute discovery call
We listen to what you are trying to build.
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Step 2: Requirements and feasibility
We confirm scope, risks and technical fit.
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Step 3: Solution proposal
Approach, team and estimate in writing.
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Step 4: Development plan
Milestones, sprints and who does what.
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Step 5: Start building
Your team is onboarded and sprint one begins.
We Don't Stop at Writing Code
Your application ships ready for real users, real traffic and real scrutiny.
Fast
Performance engineering and optimized architecture keep pages and queries quick under load.
Secure
Security-conscious architecture and secure development practices, backed by ISO 27001 certified processes.
Accessible
WCAG-focused design, development and testing so everyone can use what you build.
Tested
Manual QA, test automation and performance testing on every release.
Scalable
Cloud and infrastructure designed around the growth you expect.
Maintainable
Clean architecture, documentation and ongoing support so the product stays healthy.
Accessibility Built Into Your Web Application
Accessibility shouldn't be a remediation project six months after launch. We make it part of every stage, with certified accessibility specialists working alongside your developers.
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Design
Accessible patterns, color contrast and focus order from the first wireframe.
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Development
Semantic HTML, ARIA where needed and full keyboard support.
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Testing
Manual and automated testing, including screen readers.
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Remediation
Clear, prioritized fixes for every issue found.
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Retesting
Verification that fixes hold before release.
- WCAG 2.1 / 2.2
- ADA
- Section 508
- EAA (where applicable)
- JAWS
- NVDA
- Keyboard testing
- Screen readers
- Manual + automated
Technology That Fits the Product
We choose technology based on the product, not because it's our favorite framework.
Frontend
- React
- Angular
- Vue.js
- Next.js
Backend
- Node.js
- Laravel
- Python
- Java
Database
- PostgreSQL
- MySQL
- MongoDB
- Redis
Cloud and Infrastructure
- AWS
- Azure
- Docker
- Kubernetes
- CI/CD
AI and Automation
- OpenAI API
- LangChain
- TensorFlow
- Custom ML models
Not Sure Where to Start?
Tell us where you are and what you need. We will suggest a starting point.
You're probably looking for
Choose a stage to see our suggestion
Your answers stay on this page. Nothing is sent until you contact us.
How Can We Work Together?
Whether you need a full product team or expert web app developers from India to extend your own, we match the engagement to your situation.
Build My Product
End-to-end discovery, design, development, QA and deployment.
Best for: Startups and businesses building a new application.
Extend My Engineering Team
Dedicated developers, QA, DevOps and architects who work inside your process.
Best for: Companies that already have a product or team.
Modernize My Existing Application
Improve architecture, performance, UX, accessibility or maintainability.
Best for: Businesses with an application that is hard to change or slow to run.
Choose How You Pay
Dedicated Team
Monthly retainer for long-term or ongoing product development with predictable billing.
- Full-time dedicated developers
- Daily standups and sprint planning
- Maximum cost efficiency
Fixed-Price Project
For well-defined projects. Agree on price, timeline and milestones up front.
- Clear scope and milestones
- Fixed budget, no surprises
- Defined delivery dates
Flexible Hourly
Pay only for hours worked. Best for short sprints, feature additions or on-demand expertise.
- No long-term commitment
- Transparent time tracking
- Scale up or down any time
Why Companies Work With D2i
Our teams do not just write code, they take responsibility for the outcome.
Engineering, QA and Accessibility Under One Roof
Not just development. Testing and accessibility specialists work with your engineers from the start.
One Accountable Partner
Design, development, QA, DevOps and accessibility from a single team.
Transparent Delivery
Sprint demos, Jira and Slack visibility and regular reporting. No black boxes.
Security and Quality
ISO 27001 and ISO 9001 certified processes behind every engagement.
Global Delivery
India-based engineering with experience serving clients across the USA and beyond, at up to 60% lower delivery cost.
Long-Term Partnership
SLA-backed support and maintenance after launch. We do not disappear after go-live.
What Clients Say
In recognition of exceptional performance, dedication, hard work, passion, and commitment to excellence — D2i Technology’s invaluable contribution continues to make a significant impact in support of our All Hazards, One Health, One Nature mission.
Allison A. Sakara
Co-Founder & Executive Director, High Alert Institute
Their DevOps Services in USA helped us significantly reduce deployment time and infrastructure costs. D2i Technology streamlined our CI/CD pipelines and improved system stability. The results were visible within weeks, and their DevOps expertise truly made a difference.
DevOps Services & Solutions (USA)
D2i Technology is a highly dependable Web Development Company in India. From requirement gathering to final delivery, their team demonstrated strong technical expertise and ownership. The final product was robust, user-friendly, and built exactly as envisioned.
Web Development Company (India)
Frequently Asked Questions
The questions we hear most before a project starts.
Have an Application in Mind?
Tell us what you're trying to build, improve or scale. We'll help you understand the right technical approach, team and next steps.
No obligation. Start with a 30-minute discovery conversation.