Built by engineers whose past work quietly runs businesses across 15+ countries — now bringing that craft to your project. Portals, dashboards, booking systems, internal tools, and complex API-driven apps. No templates. No juniors. Built to last.
Discuss Your Project →From the internal tool that replaces 12 spreadsheets to the multi-tenant portal that powers a platform business — we build the full spectrum of web applications.
Secure portals where clients log in, manage their account, view documents, track progress, submit requests, and communicate with your team — branded and role-aware.
Data visualisation, KPI tracking, drill-down analytics, scheduled exports, and role-filtered views — built for the people who run the business, not just the engineers.
Resource scheduling, availability calendars, conflict detection, confirmation and reminder workflows, cancellation management, and payment collection at booking.
Operations dashboards, content management tools, bulk action interfaces, audit logs, and workflow automation — replacing spreadsheets and manual processes.
Tenant isolation, custom domain routing, per-tenant branding, organisation hierarchies, and a super-admin console — designed for platform businesses and resellers.
Web apps that orchestrate data from multiple third-party systems — CRMs, ERPs, payment gateways, government APIs, and industry platforms — with resilient integration design.
Org hierarchies, team-level permissions, resource-level ownership, custom roles, and API-enforced authorisation — not just an "admin vs user" toggle.
Multi-step approval chains, document workflows, e-signature integration, status tracking, notification triggers, and audit trails for regulated business processes.
Generic software forces your business processes into someone else's data model. You adapt your workflows to the tool, pay per-seat fees forever, and can never fully own your data. Custom web applications are shaped around how your business actually works — and once built, the cost is maintenance, not a monthly subscription that grows with your headcount.
Web application architecture decisions made in week two determine the cost of every feature in year three. Large agencies staff projects with juniors who make those decisions under time pressure. We have 12–15 years of experience each — we have already made the mistakes and know which patterns hold up under real usage and which create expensive rework.
A web application is a system — frontend, API, database, auth, integrations, deployment, monitoring. A single freelancer handles one part well and patches the rest. Our studio coordinates the full stack: one coherent architecture, one engineering team, one accountable point of contact for the whole project.
Web app projects often start as an MVP build and evolve into long-term product scaling engagements. Browse our full set of capabilities, read about how we work, or learn more about the team behind The Yellow Labs.
We bill hourly from $40/hr. A focused web application — a booking system, a client portal, or an internal admin tool — typically runs 100–300 hours. A full-featured web app with complex role management, third-party integrations, and reporting generally falls between 300–700 hours. Multi-tenant platforms with complex data models run higher. We scope carefully upfront and report hours weekly.
A website delivers content — it is mostly read-only. A web application is interactive software that runs in the browser — users log in, create data, manage workflows, and take actions. Booking systems, dashboards, CRMs, portals, and admin tools are all web applications. They require backend APIs, databases, authentication, authorisation, and often real-time features. This is our core competency.
We choose stacks based on the project requirements. For most web applications: Next.js or Remix for the frontend, Node.js or Python for the API, PostgreSQL as the primary database, Redis for caching and background jobs, deployed on AWS or Vercel. For real-time requirements we add WebSocket layers. We are not dogmatic about stack — we use what is right for the job and what your team can maintain.
Yes — multi-tenant architecture is a core competency. We design tenant isolation at the data layer (row-level security, schema-per-tenant, or separate databases depending on compliance requirements), custom domain routing, per-tenant branding, and a super-admin console for platform management. Getting multi-tenancy right from the start avoids a painful and expensive rebuild at scale.
Role-based access control (RBAC) in complex applications requires careful data modelling. We design permission systems that can handle organisation hierarchies, team-level permissions, resource-level ownership, and custom roles — not just a flat "admin/user" toggle. We implement this at the API layer (never trust the frontend for authorisation) and surface it through a user-friendly admin interface.
A focused internal tool or admin panel: 6–12 weeks. A client portal or booking system: 10–20 weeks. A full web application with integrations, role management, and reporting: 16–32 weeks. Timelines are driven more by feedback cycle speed and scope clarity than by development velocity — we move quickly when decisions are made quickly.
Yes — third-party API integration is a routine part of web application development. CRMs, ERPs, payment gateways, accounting software, communication platforms, government APIs, and industry-specific data sources. We design integrations to be resilient: retry logic, error monitoring, data validation, and clear failure modes so your app degrades gracefully when a third-party service has issues.
Whichever capability you came here to read about, the way we engage usually depends on which stage your product is in. Pick the path that matches yours.
Have an idea that needs validating? Prove technical feasibility first.
Ready to put a real product in front of users? Build the smallest version that proves the market.
MVP is live and learning? Evolve it with continuous development.
Book a free 30-minute call. We'll walk through your requirements, discuss the architecture, and give you a clear sense of what it takes to build this the right way.
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