Your custom web application, built for your real business
Custom web application development is our specialty. At Offing we build enterprise software designed to solve specific business problems. We don’t replicate templates or adapt generic products that don’t fit. Every application is designed around your processes, integrations and objectives.
We work as a technology partner, involving ourselves in understanding how your company operates, to build tools your team will actually want to use and that save real time from day one.
Types of custom web applications we build
We specialise in projects where an off-the-shelf solution isn’t enough and business logic is complex.
If your business relies on spreadsheets, emails and knowledge that only lives in a few people’s heads, a custom web application turns those processes into a system that scales with your team.
Our Approach: Engineering before Programming
What sets us apart from a traditional agency is the technical rigour we apply before writing the first line of code.
Modular and Maintainable Architecture
We design applications where every module can be modified, replaced or extended without rewriting the whole system. The code we deliver today is the code your team will build on for years.
Security by Design
We build security into every layer from the start: authentication, authorisation, data encryption, secure practices and dependency audits. Security isn't a feature we add at the end.
APIs First
We design clean, documented and versioned APIs from day one. Your application isn't a closed system: it can grow, connect with other tools and be consumed by any future product.
// Modular and maintainable application
const application = {
modules: ["users", "billing", "reports"],
architecture: "modular",
integrations: ["ERP", "CRM", "email"],
async extend(module) {
await this.validate(module);
return await this.deploy(module);
}
};
// Grows with your business
await application.deploy();
// ✓ Ready for production
Technology Stack
Serious tools for serious applications. We don’t experiment with your business.
We use consolidated technologies with strong community support, battle-tested in high-demand projects.
How we work together
A clear, transparent process where you see real progress, not promises.
Businesses that already digitised their processes with Offing
We work with SMEs and startups that need more than a website: they need tools that work.
Celia SGAR
Vendor Management Consultant
"Working with Offing has been one of the best decisions for taking Vendor Score IT from an idea to a real product. We had spent years wanting to build this tool, and thanks to their work I now have a solid, scalable SaaS solution ready to sell my consulting services in a far more professional way."
Andreu Teixido
President, IDP Direct
"When a change is URGENT, I get an answer within the minute. In Offing I haven't just found technical quality, but something far more important."
Josep Ventura
Customer Service Manager, Grupo BAXI
"We needed a custom, agile tool that would adapt to every environment. Offing understood the idea in record time."
Investment and estimated timelines
Every custom application has a unique scope, but these are the typical ranges we work within.
Internal application or simple portal
From €12,000
Digitising a specific internal process, automating administrative tasks, or building a simple private area portal for clients or suppliers.
Mid-sized enterprise application
From €30,000
Complete internal systems, platforms connecting multiple departments, B2B portals with integrations, solutions replacing spreadsheets and manual processes.
Complex application with critical integrations
From €70,000
Sector-specific applications, platforms with complex workflows, legacy system integrations, regulatory compliance (GDPR, healthcare, finance) and high-security requirements.
These ranges are indicative: final price depends on scope, integrations and complexity. In a free, no-commitment initial consultation we give you a realistic estimate for your specific case.
Frequently asked questions
The questions companies typically ask us before hiring a custom development project.
Does your business need a custom web application?
If you have processes to digitise, systems to integrate or an idea to turn into a real tool, at Offing we can help you build it with technical rigour and business vision.