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Web App Development

Custom web application development by Splendorsoft

Web Applications Built for Scale, Security, and Speed

We build custom web applications, SaaS platforms, client portals, admin dashboards, and internal tools. Unlike a marketing website, a web application handles real business logic: user accounts, data flows, automated processes, and integrations. We engineer these systems to be reliable at any scale.

  • Custom SaaS platforms and multi-tenant architecture
  • Client portals, admin dashboards, and internal ops tools
  • Authentication systems: login, 2FA, OAuth, role-based access
  • REST and GraphQL API design, documentation, and versioning
  • Third-party integrations: CRM, payment, email, ERP, and more
  • Real-time features: live notifications, messaging, and data sync
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Types of Web Apps We Build

Every system below has been built and delivered for real clients, not just sitting in our capability list.

SaaS Platforms

Multi-tenant subscription apps with user onboarding, billing via Stripe, feature gating, and analytics dashboards.

Admin Dashboards

Internal management panels with data tables, charts, filters, export, and user-role-based access control.

Client Portals

Secure login portals where clients can view invoices, upload documents, track project status, or manage their account.

Booking & Scheduling Systems

Appointment calendars, staff availability management, automated reminders, and payment collection in one system.

Inventory & Order Management

B2B and B2C order platforms with product management, stock tracking, supplier integration, and automated invoicing.

Reporting & Analytics Apps

Custom data dashboards that pull from multiple sources (API, database, spreadsheet) and present them in actionable charts.

Engineering Standards We Follow

Web applications fail when security and reliability are treated as afterthoughts. We bake these in from the first line of code, not at the end of the project.

  • Authentication: Bcrypt-hashed passwords, JWT or session-based auth, 2FA support, brute-force lockout, and secure password reset flows
  • Authorization: Role-based access control (RBAC): every route and data endpoint checks what the user is allowed to see
  • Input handling: All user input validated server-side, parameterized SQL queries (zero SQL injection risk), XSS filtering on all outputs
  • API security: Rate limiting, API key management, CORS policies, and request signing where applicable
  • Data integrity: Database transactions for multi-step operations so partial writes never leave data in a broken state
  • Error handling: Structured error logging, graceful degradation, and user-friendly error messages with no stack trace leakage
  • Performance: Database indexing, query optimization, lazy loading, caching (Redis or file-based), and CDN for static assets
  • Testing: Functional testing of all critical flows including login, payment, form submission, and data mutations before every deployment
Web application security and engineering standards

Technology Stack

We're framework-agnostic. We recommend the stack that best fits your project's complexity, budget, and the team that will maintain it after launch.

Frontend

React, Next.js, Vue.js, or vanilla JS/TypeScript, chosen based on interactivity requirements and SEO needs.

Backend

Node.js (Express/Fastify), PHP (Laravel/custom), or Python (Django/FastAPI). Structured, testable, and well-documented.

Database

MySQL, PostgreSQL, or MongoDB depending on data structure. Indexed for performance, backed up daily, replicated for uptime.

Infrastructure

AWS, DigitalOcean, or Hetzner. Docker containers, NGINX, SSL, auto-renew certificates, and server hardening as standard.

Caching & Performance

Redis for session and query caching, CDN for static assets, lazy loading, and database query profiling to eliminate bottlenecks.

Monitoring & Observability

Uptime monitoring, error tracking (Sentry or equivalent), structured logging, and alerting so issues are caught before users report them.

Have a Complex Web Application to Build?

Share your requirements and we'll scope the architecture, recommend the right stack, and give you a realistic timeline and budget estimate.

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