Custom SaaS, ERPs & CRMs engineered for scale.
From MVP to multi-tenant production: JIN Solutions builds web applications that load fast, scale globally, secure your data and adapt to your business — no off-the-shelf compromises.
Off-the-shelf SaaS is killing your margin. Custom is cheaper than you think.
If you are paying ₹3-15L per year for half a dozen SaaS subscriptions that almost fit your workflow, you are losing money — and worse, you are losing the data ownership that becomes a moat as your business grows. JIN Solutions is a web application development company in Mumbai that builds custom-fit SaaS, ERPs, CRMs and portals which pay for themselves in 8-14 months and keep paying back forever after.
Our stack of choice depends on your needs. For heavy-traffic public SaaS we love Next.js + Node.js + PostgreSQL. For traditional Indian businesses we ship rock-solid systems with Core PHP, Laravel and MySQL. For enterprise integrations, we deploy Python (Django/FastAPI) or Go. Frontends are built with React, Vue or vanilla Bootstrap 5 — whatever your team can maintain.
Every JIN web application ships with: role-based access control, audit logs, REST + GraphQL APIs, CI/CD pipelines, automated backups, monitoring (Sentry + UptimeRobot), OWASP-hardened security, and a clean migration path off our infra. You own the code. You own the data. No vendor lock-in. Ever.
What's Included
- UX research + wireframes + design system
- Frontend, backend, API, database
- RBAC, audit logs, multi-tenancy
- Payment gateway integration
- CI/CD pipeline + staging environment
- Automated testing & QA
- Cloud deployment (AWS / GCP / Azure / DO)
- Documentation, training & handover
What we deliver in Web Applications
SaaS Platforms
Multi-tenant SaaS with billing, usage metering, RBAC, white-labeling and API marketplace.
ERP & CRM Systems
Custom-built CRMs and ERPs that fit YOUR workflow — sales, inventory, HR, finance, ops.
Admin Dashboards
Real-time business dashboards with custom KPIs, exports, drill-downs and scheduled reports.
Customer Portals
Branded customer portals for invoices, support, file sharing, e-signatures and self-service.
B2B Marketplaces
Multi-vendor B2B platforms with RFQ, contract pricing, EDI and bulk-order workflows.
Legacy Modernization
Migrate creaky PHP 5 / .NET / FoxPro / Access systems to modern, cloud-ready architectures.
How we deliver Web Applications
Discover
Free product audit. We map your business model, users, integrations and success metrics.
Design
Figma prototypes, system architecture, DB schema and security model — approved before code.
Build
Two-week sprints, weekly demos, GitHub access, CI/CD from day one.
Launch
Pen-test, load test, SEO & Core Web Vitals audit, then go-live.
Evolve
Monthly retainers for new features, scaling, optimization and 24/7 monitoring.
Web Applications — common questions
Don't see your question? Drop us a line or call +91 8082338010.