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Web application development.
We build custom web applications, SaaS platforms, and business portals with React, Next.js, and Node.js, handling everything from discovery and UI/UX design to backend architecture and cloud deployment.
The ceiling.
Where the platform stops.
Lovable, Webflow, Replit and white-label builders get you moving fast. Then the limits arrive — the integration they do not support, the logic they cannot express, the codebase you cannot take with you.
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What we build.
We build web products for companies that need more than a template — custom software with real business logic, integrations, and performance requirements. Our teams have shipped SaaS platforms, B2B portals, admin dashboards and marketplaces.
Built, not assembled.
- SaaS platforms — subscription management, billing, multi-tenant architecture
- Custom web applications and business portals
- Admin dashboards and internal tools
- E-commerce platforms and marketplace products
- API-first backends and RESTful or GraphQL services
- Corporate websites with CMS integration (Contentful, Sanity, Strapi)
- Web apps for OTT, media, EdTech, sports, and B2B verticals
- Performance optimization, accessibility audits, and technical SEO
- Cloud infrastructure setup and CI/CD pipeline configuration
Who we work with.
Startups building a product from scratch
You have a validated idea and need a team that turns it into a working web product fast. You want a partner who understands scope — not just code — and can push back on over-engineering.
Companies replacing a no-code or legacy tool
You built on Lovable, Webflow, Replit, or a white-label platform and hit its ceiling. You need a custom codebase you actually own — one that can scale and evolve without vendor lock-in.
Product teams adding a web layer
You have a mobile app or OTT platform and need a web companion — a dashboard, a content management interface, or a customer portal that shares the same backend and business logic.
Businesses slowed down by internal tools
Your team runs on spreadsheets, outdated internal software, or a cobbled-together admin panel. You need a proper web tool — built to your workflows and fast enough that people actually use it.
Technology we use.
- Frontend
- React
- Next.js
- TypeScript
- Tailwind CSS
- Vite
- Backend
- Node.js
- Python
- NestJS
- REST API
- GraphQL
- PostgreSQL
- MongoDB
- Infrastructure
- AWS
- GCP
- Docker
- Kubernetes
- GitHub Actions
- Vercel
- Cloudflare
- CMS & Integrations
- Contentful
- Sanity
- Strapi
- Stripe
- Auth0
- Twilio
- SendGrid
- Testing
- Jest
- Playwright
- Cypress
- Vitest
How we work.
One team. Both sides.
01.We start with scope, not code
Before a line of code is written, we map your users, your workflows, and what the system needs to do. Decisions that would cost weeks later get made in hours.
02.You see it working in weeks
We ship working builds on a two-week sprint cycle. At the end of each sprint you review a live, testable version of the product — not a slide deck, not a design file.
03.Frontend and backend
Your React frontend and your Node.js backend are built by the same people, in the same sprint cycle. No handoff gaps, no integration surprises at the end.
FAQ.
Before you ask.
Yes. We build complete web products — React or Next.js frontend, Node.js or Python backend, database, API layer, and cloud deployment. We can also integrate into an existing backend via API if you already have one in place. Full-stack delivery under one team means no handoff gaps between frontend and backend.
A website is primarily informational — content pages, a blog, a landing page. A web application has business logic, user authentication, data processing, and dynamic content — a SaaS dashboard, a portal, a marketplace, or an admin tool. PettersonApps focuses on web applications. For a simple marketing website, a CMS platform or a website builder is often the right choice.
Yes. We regularly onboard onto existing codebases — adding new features, refactoring bottlenecks, improving performance, or extending a product to a new platform. We start with a short code review to understand the architecture before committing to ongoing work.
A focused MVP — one core workflow, basic authentication, and a backend API — typically takes 8–14 weeks. A full SaaS platform with multi-tenant architecture, subscription billing, and an admin layer takes 16–28 weeks. Timeline depends primarily on feature scope and the number of third-party integrations.
We have in-house UI/UX designers. For most engagements, design and development run in parallel within the same team — wireframes and high-fidelity Figma designs are produced before each development sprint. If you already have designs or a design system, we work from those directly.
Start your project.
Ready to build your web product?
Tell us what you're building — a SaaS platform, a B2B portal, or a custom web app. You get a scope estimate within 3–5 business days.
Get a free estimate