Software development & consulting · Romania / EU

Custom web applications, business platforms & AI‑assisted software.

Denhau Solutions helps companies design, build and improve modern digital products — from clean user interfaces and scalable frontend architecture to backend APIs, databases, automation and long-term product support.

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        9+ years of engineering experience
        ·
        Founder-led, backed by a team when a project needs it
        ·
        Enterprise to startup scale
      

Project experience and collaborations include

European Commission INCADEA NOVENTI PROFIMED SOLUTIO-CHARLY LAMPIX

That enterprise-grade discipline is now what small and growing businesses get too — without the enterprise price tag or timeline.

Services

What we build

Practical, scalable and maintainable digital products — built end to end or alongside your existing team. We work best with small businesses, and growing mid-size companies: a booking system for a clinic, an internal dashboard for a small logistics team, a customer portal for a local service business — real, focused problems, not enterprise-scale overhead.

These are the end products we deliver. For the technologies behind them, see the full stack below ↓.

Custom Web Application Development

Complete web applications tailored to your business logic, from first screen to production.

Business Dashboards & Internal Tools

Dashboards and internal platforms that turn messy processes into clear, usable workflows.

SaaS / Platform Development

Multi-user platforms and SaaS products designed to grow without rewrites.

Cross-Platform Mobile & Desktop Apps

One codebase shipped to web, iOS, Android and desktop — the same approach behind our own HAU App.

AI-Assisted Automation & Smart Features

OCR and data extraction, smart workflows and AI-assisted features that remove manual work.

Refactoring, Maintenance & Long-Term Support

Modernizing legacy code and keeping products healthy over years, not sprints.

Full-cycle delivery

One partner across the whole product lifecycle

Start anywhere in the cycle — a raw idea, a half-built app, or a legacy platform that needs care. We take it the rest of the way.

01 Discovery

02 UX structure

03 Design

04 Frontend

05 Backend

06 Database

07 Integrations

08 Deployment

09 Maintenance

Frontend

Angular TypeScript RxJS NGXS NGRX Next.js Tailwind Ionic Capacitor

Backend

Node.js NestJS REST APIs OpenAPI WebSocket

Database

PostgreSQL SQL

Tools & delivery

Git Docker Jira Confluence Azure DevOps Storybook Agile / Scrum

AI & automation

AI-assisted development OCR / data extraction Smart workflows Automation Rapid prototyping

Experience

Selected project work

A cross-section of the kinds of problems Denhau Solutions has helped solve — from enterprise platforms to focused business tools.

Public sector · Enterprise

Enterprise Case Management Platform

Rationalizing a complex case management landscape for a European institution — consolidating fragmented workflows into a coherent, maintainable enterprise UI.

Healthcare · Mobile & web

Healthcare & Medication Management Apps

Patient-facing medication management and communication tools where reliability and clarity directly affect people's health routines.

Automotive · B2B

Automotive Sales & Aftersales Platform

Digital sales and aftersales journeys for automotive businesses — turning dealership processes into smooth customer-facing flows.

Pharmacy · Fintech

Pharmacy Workflow & Financial Tools

Workflow, communication and financial tooling for pharmacies — dense business logic made usable for daily operations.

Healthcare · Scheduling

Dental Appointment Planning Software

Appointment planning and practice software for dental clinics — scheduling logic that has to work every single day.

AR · Computer vision

Augmented Reality Web Platform

Web applications for an AR platform working with computer vision and machine learning — frontend engineering at the edge of the browser.

SMB · Web

Small Business Websites & Landing Pages

Landing pages, blogs, responsive websites and custom web components for smaller clients — fast, clean and easy to maintain.

Our own product — not a client project

HAU — History Auto Utility

The problem: car owners lose track of maintenance history, forget document and inspection deadlines (ITP, RCA, vignette), and scramble for paperwork the moment they need to sell.

Our solution: HAU centralizes a car's maintenance history, sends smart reminders before documents and deadlines expire, and uses AI to read identity documents and generate a sale contract in minutes instead of hours.

This is a real, live product we built and run ourselves — shown here as an example of what we deliver, not something you sign up for through this page.

Open HAU App

One codebase, every device

Web iOS Android Desktop

+Full maintenance history & car documents in one place
+Smart reminders before deadlines expire
+AI-assisted sale-contract generation from ID documents
+Built with the same stack we use for client projects

Why Denhau Solutions

No agency layers. Just experienced engineering.

You work directly with Denhau's founder, who leads every engagement personally — bringing in trusted collaborators when a project needs extra hands. Decisions are made quickly, communication stays technical when it needs to be, and nothing gets lost in translation between sales, management and delivery.

+ Direct communication with the founder, backed by a team when a project calls for it
+ Practical delivery — working software, not theory
+ Strong frontend and UI architecture expertise
+ Real understanding of business logic and product flows
+ Clean, maintainable and scalable implementation
+ Flexible collaboration: freelance, contract, project-based or long-term
+ Fast prototyping with modern tools and AI-assisted workflows

Why Denhau Solutions exists

Small businesses deserve senior engineering too

The problem

Small and mid-size businesses are usually stuck choosing between slow, expensive agencies with layers of account managers between them and the actual engineers — or freelancers who disappear once the first version ships, leaving software nobody can safely touch again.

The solution

Denhau Solutions was founded to bring enterprise-grade engineering discipline — earned on projects for European institutions and large companies — directly to smaller teams, with none of the overhead: one accountable founder, clear communication, and software built to still make sense a year later.

About

Denis Gandzii

Founder & Lead Consultant · Senior Frontend Engineer

Denis Gandzii is a Senior Frontend Engineer and software consultant with over 9 years of experience in web application development, enterprise platforms, UI architecture and product delivery. Through Denhau Solutions SRL, he helps companies build, modernize and maintain digital products with a practical, clean and scalable approach.

How we work together

Collaboration terms, kept simple and transparent

There's no single model that fits every project. Whichever one fits yours, the model and price are agreed upfront, in writing, before any work starts — no surprises later.

Fixed price

You already know what you want built. We scope it together, agree a fixed price and an estimated delivery timeline, and deliver against that.

Evolving scope

You have a starting point but the idea will develop as we go. We agree a starting price to kick off, then continue per feature or on a regular period, priced by complexity.

Subscription

For products that need ongoing development and support — a monthly or annual plan keeps your application maintained, hosted and improving over time.

Have an idea, platform, internal tool or application that needs to be built or improved?

Tell us where you are — a rough concept, a messy process or a live product — and we'll map the shortest practical path to something clean and shippable.

Prefer email? Write to [email protected]

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