Custom web application development.
Built to actually perform.
Portals, dashboards, multi-role interfaces, and progressive web apps for startups and enterprises. We build the kind of web applications that manage real operations , not just display information.
Fixed-price, scoped to your build, no hourly billing surprises. Get your number →
8 years · 600+ projects · Fiverr Vetted Pro · US/UK/EU/AU clients
What usually drives a web app build
Most projects start from one of these. Here is what we do about each.
The operation runs on spreadsheets, email threads, and someone chasing updates.
One portal, one source of truth. Job management, scheduling, approvals, and reporting in a multi-role web app. It is what we built for i-mve, now running dispatch for 510 UK companies.
A no-code tool got you started, then hit a wall on performance or permissions.
We rebuild on a real stack. Angular or React on an API-first backend, with the role model and data integrity a no-code platform cannot give you, and no per-record pricing.
Clients keep emailing to ask for status, documents, and updates.
Give them a login instead. A self-service B2B portal for requests, status, and documents cuts support load and becomes the visibility clients cite at renewal.
The last build was handed over by a team that has since disappeared.
We audit, then take over delivery. A straight assessment of what is salvageable first, then we recover what works and re-engineer what does not.
Web applications that manage real work
Not brochure sites. Not marketing pages. Web applications with real users, real data, and real business logic.
Operations & Management Portals
Multi-role web applications that run day-to-day business operations, job management, scheduling, dispatch, approval workflows, and reporting. The kind of portal that replaces a combination of spreadsheets, email threads, and phone calls.
Data Dashboards & Reporting
Real-time dashboards pulling from multiple data sources, with filters, drill-downs, and the export formats your team actually needs. We've built dashboards for healthcare research data, parking occupancy analytics, and enterprise operations reporting.
B2B Client & Partner Portals
Self-service portals for your clients, partners, or suppliers. Request submission, status tracking, document access, and communication, without routing everything through your support team. Portals that reduce overhead and give clients the visibility they ask for.
Progressive Web Apps
Web apps that work offline, install like a native app, and behave like one on mobile. PWAs are the right choice when you need mobile-quality UX without maintaining a separate codebase, and when your users are on variable connectivity.
Internal Tools & Admin Systems
The internal applications your team uses every day, content management, user administration, operational reporting, bulk data tools, and the configuration interfaces that drive your product. Built properly, not bolted together.
E-commerce & Marketplace Platforms
Custom e-commerce beyond what Shopify supports, multi-vendor marketplaces, auction systems, complex product configurators, B2B ordering with custom pricing, and industry-specific catalogue requirements that off-the-shelf platforms can't handle.
Built by AI-native engineers, so AI drops into the app when you want it
We architect the data model, APIs, and event streams so language-model features are a feature ticket later, not a rewrite. It is how our own products, Tully AI and Mebag, were built.
Assist and summarise inside the portal your team already works in, with humans in control.
RAG over your own records, so a plain-language question returns a real, grounded answer.
Extract structured data from the PDFs and forms that flow through the app, with verification layers.
Shipped with prompt versioning, evals, and guardrails. See how we build AI →
From brief to browser
Requirements: understand the workflows first
Before architecture or tech decisions, we map the workflows the application needs to support. Who uses it, what they do, what data moves through it, and where the current process breaks. Web applications fail when they're built around what stakeholders say they want rather than how work actually flows.
Architecture: decisions that are hard to undo
API design, data model, state management approach, authentication, real-time requirements, and performance expectations, agreed before development starts. A dashboard with 10,000 rows is different from one with 10 million. We design for your actual scale, not a demo.
UX design: for the people who didn't choose it
Enterprise and operations web apps are used by people who didn't select the software. We design for adoption, every screen designed before implementation, complex flows prototyped, edge cases handled in the design, not discovered in QA.
Development: two-week sprints, real visibility
Two-week sprints with a working, deployable build at the end of each. You test it, provide feedback, and the next sprint begins. Scope changes are documented and priced before any additional development happens.
Deployment, testing, and handover
Production deployment, CI/CD, load testing where required, documentation, and a 30-day post-launch support window. We deliver working software, not working software with a list of known issues for the next phase.
Ongoing development and support
Most web applications keep evolving after launch as usage grows and the business changes. On a retainer we handle new features, dependency and security updates, and performance work as your data volumes climb, with the same engineers who built it.
What we build web applications with
What web application development costs
Every build is fixed-price, never hourly. Eight years of scoping and delivering web applications, here's what's included at each level.
Estimate your project cost →How much does a web application cost?
A focused web application solving one clear problem, a client portal, an operations dashboard, a reporting tool. 2–4 user roles. 8–14 weeks. One primary workflow with 2–3 supporting views.
- Core feature development
- Authentication + RBAC
- 1–2 integrations
- Responsive design
- Deployment + CI/CD
A complete multi-role web application with several core workflows, multiple integrations, and the admin tools your team needs. 14–24 weeks.
- Multi-workflow application
- Complex permission systems
- 3+ integrations
- Real-time features
- Admin + reporting dashboard
- API documentation
Large-scale web applications replacing multiple existing systems, requiring phased delivery, data migration, or complex compliance requirements. Scoped phase by phase.
- Multi-phase delivery
- Legacy data migration
- Compliance architecture
- High-availability deployment
Web applications we've delivered
i-mve: Removals Operations Web Platform
A full operations web application for UK removals companies, office staff, field crews, and clients each get a completely different interface on the same underlying data. Job management, quoting, scheduling, and accounting integration in a single web application used across 510 companies.
View live platform →Read the case study →COMPASS for Autism: Ball State University
A clinical research web platform with four distinct user roles, researchers, consultants, educators, and families, each with separate dashboards and data access. Complex permission logic, intervention tracking, and research data collection built to academic institution standards.
View live platform →Read the case study →What people ask about web app development
Straight answers on scope, architecture, integrations, timelines, cost, and ownership.
What's the difference between a web application and a website?
A website presents information. A web application manages work. If users log in, create records, interact with data, or take actions that change state, it's a web application. If you're describing what you want to build and you're using the word "portal," "dashboard," or "system", it's an application, not a site.
What framework do you use for web applications?
Angular for complex enterprise applications with large data sets and strict TypeScript requirements. React or Next.js for SaaS products where SSR matters for SEO. We pick the framework based on the project requirements, not on what we're most comfortable with. We'll explain the tradeoffs before recommending.
Can you build a web application with real-time features?
Yes, WebSockets, Server-Sent Events, and polling strategies depending on what the feature actually needs. Real-time is often over-specified. A dashboard that refreshes every 30 seconds doesn't need WebSockets. A collaborative editing feature does. We match the implementation to the requirement.
How do you handle performance for large data sets?
Pagination, virtual scrolling, query optimisation, caching layers, and background processing for heavy operations. We've built dashboards displaying millions of rows with sub-second filter responses. Performance is an architecture decision made upfront, not a feature added after launch.
Do you do mobile-responsive web applications?
Yes, all our web applications are responsive. For operations and enterprise use cases, desktop is typically primary but field staff use tablets and phones. We design and test across breakpoints. For cases where mobile is truly primary, a PWA or native mobile app may be a better fit, we'll tell you which.
353 reviews. 5.0 average.
Platform-level reviews of the agency — not cherry-picked project comments.
What I love about Team7 is that they always say: No worries, we can find a solution. This is the mindset of builders, creators, people who do not have fear, the partner you need if you want to excel.
Working with Mo and his team over the past year has been nothing short of exceptional. I was admittedly sceptical about investing such a large amount, but results exceeded every expectation.
Their responsiveness and willingness to take on our challenging task were impressive.
Ready to build your web application?
Tell us what you need.
30 minutes. No slides. We'll review your requirements and tell you honestly what it will take to build it properly.