Service
Web applications
We design and build production-grade web applications that carry real operational weight. Whether you need an analytics dashboard, a customer portal, a headless e-commerce system, or a multi-tenant SaaS platform, we deliver codebases that ship on time, scale reliably, and remain highly maintainable for years to come.
Service Summary
Custom web applications designed to load instantly, scale seamlessly, and preserve core business logic without technical debt.
Problems Solved
Many organizations struggle with fragmented workflows, insecure spreadsheets, and slow, legacy web tools that delay operations and compromise critical company data.
Who it is for
This service is tailored for mid-market companies that have outgrown the limitations of spreadsheets or off-the-shelf software, startups requiring a robust, production-grade product rather than a throwaway prototype, and enterprise teams seeking to modernize their legacy platforms. We build software that serves as a core commercial asset, ensuring that your business logic is securely preserved and optimized.
Scope of work
Our web development scope covers everything required to take a web application from initial concept to a production-ready system hosted on secure cloud infrastructure.
- High-Performance Frontend Systems: We build user interfaces with Next.js and React that load instantly and provide fluid interactions. We prioritize accessibility (WCAG 2.2 AA) and ensure Core Web Vitals stay in the green to optimize search visibility and user conversion rates.
- Secure API and Data Layers: We design typed API contracts and relational database schemas that protect data integrity. We implement row-level security, clean migrations, and structured indexing to handle growing transaction volumes without latency.
- Third-Party Integrations and Auth: We wire custom systems into your existing IT landscape, including ERPs, CRMs, payment gateways, and shipping APIs. We implement standard Single Sign-On (SSO), OAuth, and multi-factor authentication for enterprise compliance.
- Cloud Deployment and CI/CD Pipelines: We set up automated deployment pipelines where every commit runs linting, type checks, and unit tests. We package applications using Docker and deploy to AWS, Google Cloud, or Vercel with structured environment variables.
Our Engineering Approach
We focus on clean server-rendered architectures (HTML-first), rigorous automated test pipelines, and standards-based component development using stable frameworks like React and Next.js.
Core stack
We build our web applications using Next.js and React with TypeScript, styling with Vanilla CSS and component custom properties. The data layer is powered by PostgreSQL or MongoDB, securely deployed on AWS, Google Cloud, or Vercel, with automated backups and monitoring. We pick proven, well-supported technologies over short-lived trends to protect your investment.
The process
We follow a disciplined, four-step process to ensure that your project is delivered without surprises, scope creep, or operational downtime.
Typical timeline
A typical custom web application project takes between 8 to 16 weeks from discovery to production launch. We break this down into: 2 weeks for discovery and technical design, 6 to 12 weeks for active development cycles, and 2 weeks for security audits, integration testing, and production deployment.
Engagement models
We offer structured engagement models to align with your business goals, team structure, and budget constraints.
See approved engagement models and starting ranges
Action Promise
Tell Lumi your web application requirements and receive a detailed, honest commercial proposal within one business day.
Frequently Asked Questions
Do we own the source code after the project is finished?
Yes, you own 100% of the custom source code, database structures, configuration files, and assets we build for you. Once final payment is made, the repository ownership is fully transferred to your team under an unrestricted commercial license.
How do you ensure the web application is secure?
We apply industry-standard security practices throughout development. This includes writing clean SQL queries to prevent injection attacks, validating all inputs server-side with strict schemas, setting up content security policies (CSP) to stop cross-site scripting (XSS), encrypting sensitive data at rest and in transit, and setting up role-based access control.
Can you integrate with our existing CRM, ERP, or legacy database?
Yes, we regularly build integrations with third-party software and legacy databases. We write custom API wrappers, data synchronization scripts, and batch migration jobs to let your new web application exchange data cleanly with your existing internal systems without breaking operations.
How do we check progress during the build?
Every two weeks, we host a sprint review call to demonstrate working features. We also provide you with access to a secure staging environment where you can interact with the app in real time as we build it. You can see the progress reflected directly in working software, not just status reports.
What hosting platforms do you recommend and who pays for them?
We recommend hosting on Vercel for the frontend and AWS or Google Cloud for backend APIs and databases. We set up all accounts directly under your organization so that you maintain direct financial control over your infrastructure, and we help you configure budget alerts to prevent unexpected bills.