Full-Stack Web
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Full-Stack Web Development in React, Node.js, and NestJS
A slow or generic website costs you customers every day. CimpleO builds custom web solutions — from corporate sites and landing pages to complex web applications — that are fast, maintainable, and built for your business goals. No templates, no bloat, no hand-offs between disconnected teams.
We’ve built multi-tenant SaaS platforms, REST and GraphQL APIs, and real-time event pipelines for clients across finance, aviation, and logistics. Our backend stack centres on NestJS and TypeScript — the same stack documented in our widely-read engineering blog.
Corporate & Marketing Websites
Your website is your most persistent sales tool. We build high-performance corporate sites with clean architecture, excellent Core Web Vitals scores, and content structures your team can actually manage. Every site is designed for search visibility from the ground up — semantic markup, structured data, and performance-first delivery.
Custom Web Applications
When off-the-shelf software doesn’t fit your workflow, we build it. Portals, dashboards, booking systems, CRM interfaces, internal tools — we design the data model, the API layer, and the frontend to match exactly how your business operates. Frontend in React or Vue; backend in NestJS/Node.js, Python, or PHP depending on the project’s needs.
SaaS & Platform Development
Multi-tenant architecture, subscription billing, role-based access, usage analytics — we’ve built SaaS products from the first prototype to production scale. We make technology decisions that keep your infrastructure costs predictable and your codebase manageable as your user base grows.
API Development & Integration
Modern web products rarely live in isolation. We build RESTful and GraphQL APIs, integrate payment gateways, connect third-party services, and create the data pipelines that keep your product talking to the tools your business already depends on. Clean, documented, versioned.
Why Businesses Choose CimpleO for Web Development
- Full ownership — you get the source code, the documentation, and no vendor lock-in
- Performance-first — we target sub-2s load times and strong Core Web Vitals scores as a baseline
- SEO-ready from day one — structured markup, fast delivery, and crawlable architecture built in
- Ongoing partnership — retainer support available post-launch so you’re never without a technical team
Tell us about your project and we’ll outline a technical approach and timeline within 48 hours.
Frequently Asked Questions
How long does a custom web application take to build?
A corporate website or marketing site: 4–8 weeks. A web application with user auth, data model, and API: 8–16 weeks. A complex platform (SaaS, multi-tenant, marketplace): 4–9 months. Timeline depends on design complexity, integrations, and how locked-in the requirements are at start. We scope before committing.
Do you include design, or just development?
Design is included. UX/UI design is part of every project — we don't hand you a blank repo and a Figma template. You get user flow analysis, Figma screens reviewed with you, and an interactive prototype before development starts. Frontend and backend delivered by one team.
What tech stack do you use?
Frontend: React (TypeScript), Next.js for SSR/SSG, occasionally Vue. Backend: Node.js, NestJS, Python (FastAPI/Django), PHP (Laravel) depending on the project. Database: PostgreSQL by default, MongoDB or Redis where the data model calls for it. We don't use exotic choices that create hiring problems for you later.
We have an existing codebase — can you build on it rather than restart?
Yes. We join existing projects regularly. We'll assess the codebase honestly — if there are parts that are cheaper to replace than extend, we'll say so with reasoning. We've rescued several projects where previous agencies left behind difficult-to-maintain code.
Do you handle hosting and deployment as well?
Yes. We set up CI/CD pipelines, Docker containerisation, and deploy to AWS, GCP, Vercel, Railway, or your existing infrastructure. We document everything and hand over access so you're never dependent on us for deployments.
What guarantees do you offer on code quality?
You own the source code with full git history. We use TypeScript strict mode, write unit and integration tests, and deliver documentation. Most clients have their tech leads review the code at handover — we welcome it.