B2B Portals & Distributor Networks
Role-based portals where partners place orders, raise tickets, download statements, and self-serve — replacing email chains and spreadsheet attachments with auditable workflows.
Web Application Development
Scalable, Secure & Production-Grade Web Applications Engineered in Chennai
We design, build, and maintain custom web applications for ambitious teams — from internal operations portals and customer self-service consoles to multi-tenant SaaS platforms used daily by thousands.
Founder-led engineering · Responds within 1 hour · Senior developers only
5+
Years of senior engineering
18+
Services across full stack
10+
Industries served
100%
Founder-reviewed code
Web Applications We Build
From internal operations tools to customer-facing platforms used by thousands daily — every system is architected for the realities of production: traffic spikes, audits, integrations, and long-term maintainability.
Multi-Tenant SaaS Platforms
Production-ready SaaS shells with tenancy isolation, plan/subscription management, billing hooks, role hierarchies, and impersonation-safe support tools out of the box.
Enterprise Dashboards & Admin Consoles
Internal control planes that consolidate KPIs, alerts, approvals, and operational data into one fast, accessible workspace — with audit trails your compliance team accepts.
Customer Self-Service Portals
Account dashboards, billing histories, document downloads, support chats, and onboarding wizards — designed to deflect support tickets and increase product adoption.
Custom E-Commerce & Marketplaces
Beyond Shopify — bespoke storefronts, B2B catalogues with quote workflows, vendor marketplaces, escrow, and inventory pipelines tailored to your fulfilment realities.
Internal Tools & Workflow Engines
Approval ladders, document workflows, data-entry consoles, and ops tooling that replaces a dozen abandoned spreadsheets with one reliable system your team actually uses.
Industries We Serve
Custom-engineered web platforms designed to modernise operations across diverse industries — with performance, security, and scalability at the core.
Manufacturing
Retail & D2C
Logistics
EdTech
FinTech & NBFC
Healthcare
Real Estate
Professional Services
Technologies We Master
Modern, proven technologies for the frontend, backend, data, and cloud layers — selected per durability, hiring realities, and your existing tech estate.
React
Frontend
Next.js
Frontend
TypeScript
Frontend
Tailwind CSS
Frontend
Node.js
Backend
PHP
Backend
Laravel
Backend
Python
Backend
PostgreSQL
Database
MySQL
Database
MongoDB
Database
Redis
Database
AWS
Cloud
Google Cloud
Cloud
Docker
DevOps
GitHub Actions
DevOps
Our Web Application Development Process
A six-step delivery rhythm engineered so stakeholders, engineering, and your end users all stay aligned — from first whiteboard sketch to long-term operations.
Discovery & Architecture
We map your goals, constraints, integrations, and audit needs — then propose an architecture, data model, and a milestone plan you can review and approve before any code is written.
UX & API Design
Wireframes, design system, accessibility checks, and OpenAPI contracts so your team and ours agree on what the app looks like and how its services will behave.
Iterative Build & QA
Senior-led sprints with automated tests, code reviews, and weekly demos on a real staging environment you can click through and validate before sign-off.
Security & Performance Hardening
Threat modelling, dependency scanning, load tests, and Core Web Vitals tuning — so the app meets your security questionnaire and your end users feel it as fast.
Deploy & Hypercare
Blue/green or canary releases, monitoring dashboards, runbooks, and a hypercare window where we sit next to your team as real users come online.
Maintenance & Roadmap
Severity-tiered SLAs, monthly health reports, quarterly roadmap reviews, and capacity that scales with your business — without rehiring an entire vendor.
Why Choose Hendoi for Web Application Development
Six commitments that decide whether you ship a system you can maintain — or inherit a codebase that becomes someone else's problem.
Founder-Led Engineering
Every architectural decision is reviewed by Sundarapandi Muthupandi — our CEO & Senior Developer. You get senior-engineer judgement on day one, not a sales-engineer demo.
Security-First Defaults
Least-privilege IAM, secrets outside repos, OWASP-aware code reviews, dependency scanning in CI, and audit logging baked in — not bolted on after a pen-test fails.
Performance You Can Measure
SLIs and SLOs, error budgets, Lighthouse and Core Web Vitals targets, and load tests on production-like data — reliability becomes a number, not a debate.
Transparent Partnership
Honest estimates, clear assumptions in every SOW, weekly demos, and direct access to the developers writing your code. No filtered project managers, no surprises.
Chennai Pricing, Global Standards
Operating from Chennai we deliver senior engineering at India pricing while serving global teams across the US, UK, Canada, Australia, UAE, and Singapore.
Documentation You Can Keep
Architecture narratives, runbooks, API references, and onboarding guides — so your in-house team (or the next vendor) can operate the system without losing context.
Engagement Models That Fit Your Reality
Pick the commercial shape that matches where your project actually is — defined scope, evolving roadmap, or production rescue.
Fixed-Scope Project
A signed scope, milestone billing, and acceptance tests. Ideal when requirements, integrations, and timelines are well understood and you want budget certainty.
- Milestone-based payments
- Signed acceptance criteria
- Predictable delivery dates
Dedicated Product Squad
A senior-led squad working as an extension of your team — weekly steering, transparent burn, and capacity that flexes with your roadmap.
- Time & material billing
- Weekly demos & steering
- Senior engineers, no churn
Rescue & Stabilisation
Short, intensive engagements to stabilise an inherited or struggling codebase — with a clear exit plan and full handover so your team owns it afterwards.
- Triage & baselining
- Targeted refactors
- Documented handover
Real-World Use Cases
Representative web applications we have engineered — illustrative scope ranges vary based on your sector, integrations, and compliance tier.
Manufacturing Command Portal
Tamil Nadu plants consolidating quality control, downtime tracking, and vendor ASN data into a single portal — replacing decade-old email chains with traceable, audit-ready workflows.
B2B SaaS Tenant Console
Multi-tenant admin platform with billing hooks, role hierarchies, impersonation-safe support tools, and tenant-level analytics for a fintech serving customers across India and the Middle East.
EdTech Learning Platform
A learner-and-instructor web app with lesson playback, assignments, proctored assessments, and parent reporting — engineered to stay fast even on entry-level Android phones over patchy networks.
Logistics Operations Dashboard
A live operations dashboard for a logistics provider — driver tracking, exception alerts, manifest reconciliation, and SLA reporting against fulfilment commitments.
Healthcare Patient Portal
Patient-facing portal for appointment booking, lab report downloads, prescriptions, and follow-up reminders — built with the privacy guardrails clinical teams expect.
Professional Services Engagement Hub
Proposal versioning, approval ladders, time entry, invoicing, and revenue leakage alerts for a partner network managing enterprise accounts across India.
Frequently Asked Questions
Common questions teams ask us before scoping a web application engagement.
How long does it take to build a custom web application?
A focused MVP typically ships in 6–12 weeks. Larger enterprise platforms run across multiple quarters with milestone releases. We share a detailed timeline with demo checkpoints once we understand your scope, integrations, and approval gates.
What does a custom web application cost?
Pricing depends on scope, integrations, compliance depth, and uptime expectations. After a short discovery call we share either milestone-based fixed pricing or a monthly retainer with every assumption spelled out — so there are no surprise invoices mid-flight.
Which technologies do you use for web application development?
We build with React, Next.js, and TypeScript on the frontend; Node.js, PHP (Laravel), or Python on the backend; PostgreSQL, MySQL, MongoDB, and Redis for data; and AWS or Google Cloud for hosting — selected per durability, hiring realities, and licensing posture.
Can you take over and modernise our existing web application?
Yes. We baseline the risks, add automated tests around revenue-critical paths, and refactor or rewrite incrementally — never a Big Bang rewrite. You stay in production throughout the modernisation.
Who owns the source code and intellectual property?
You do. All bespoke deliverables transfer to you per the contract. Our reusable scaffolding stays documented and openly licensed so you are never locked in.
Do you provide post-launch support and maintenance?
Yes. We offer severity-tiered SLAs covering incident response, dependency upgrades, security patches, and roadmap increments — scoped separately from the build phase so commercial responsibility is always clear.
Do you work with clients outside India?
We routinely collaborate with teams across the US, UK, Canada, Australia, UAE, and Singapore using remote-first workflows and scheduled checkpoints that respect everyone's time zone.
Will my application be secure and compliant?
Security is engineered in, not added later. We follow OWASP guidelines, run dependency scanning in CI, isolate secrets, enforce least-privilege IAM, and provide the artefacts your security questionnaire will ask for.