Custom Web Application Development Services
A web application is a different problem from a website. It holds state, enforces who may see what, and has to stay correct while several people change the same records. We build that kind of software end to end.
Discuss your projectWhat we build
Four shapes cover most of the work. They differ less in technology than in who the users are and how much they are trusted.
SaaS products
Multi-tenant applications where each customer's data has to stay separated at the query level, not just in the interface. Includes subscription billing, plan limits, and the admin tooling you will need to answer support tickets.
Internal tools
The systems that replace a spreadsheet several people edit at once. Usually the highest-return build available, because the process already exists and the requirements are visible in how the spreadsheet is abused.
Marketplaces
Two-sided applications with listings, search, messaging between parties, and payouts. The hard part is rarely the listing pages; it is the money movement and the dispute cases.
Client portals
Authenticated areas where your customers see their own documents, invoices, or project status. Covered in more depth on our client portal page.
Responsive by default, not retrofitted
Most applications described as responsive were designed at desktop width and then squeezed. The layout survives, but the interaction does not: tables scroll sideways off the screen, menus need a mouse to open, and forms that fit on a laptop become twelve screens of scrolling on a phone.
We test at real breakpoints on real devices rather than by dragging a browser window. Data tables become cards below a defined width instead of growing a horizontal scrollbar. Tap targets are sized for a thumb. Anything that depends on hover has a non-hover path, because touch devices have no hover state to depend on.
This matters commercially as well as cosmetically: Google indexes the mobile version of your pages, so the phone layout is the one that determines how the application's public pages rank.
Stack
We pick from a deliberately small set, because a stack a team already knows is worth more than a marginally better one it does not.
- Front end: React or Next.js with TypeScript. Next.js where pages need to be server-rendered for search or sharing; plain React where the application sits entirely behind a login and SEO is irrelevant.
- Back end: Python with Django or FastAPI, or Node.js. Django where the admin interface and permissions system save weeks; FastAPI where the job is a clean API with heavy concurrency.
- Database: PostgreSQL by default. We use the database's own constraints and transactions rather than enforcing correctness only in application code.
- Hosting: AWS, Google Cloud, or a managed platform such as Vercel or Render, chosen against what your team can operate after we hand over.
- Background work: a real job queue for anything slow — reports, imports, outbound email — so a long task never holds a web request open.
How a build runs
- 01
Scope and architecture
We write down the data model, the user roles, and what each role may read and change. Disagreements about scope almost always surface here, which is the cheapest place for them to surface.
- 02
Build in reviewable slices
Work ships to a staging environment in vertical slices you can use, not horizontal layers you have to take on trust. You see a working feature every week or two rather than a progress percentage.
- 03
Hardening
Access control tested per role, input validation on the server as well as the client, rate limiting on anything public, and load behaviour checked against a realistic data volume rather than an empty database.
- 04
Deployment and handover
CI pipeline, separate environments, and a written runbook covering how to deploy, roll back, restore a backup, and rotate credentials. Handover is a scheduled piece of work, not a final email.
Common questions
Tell us what you need
Describe the problem and we will come back with scope, timeline, and a rate. No obligation to proceed.
Get in touch