About | SintelLogic

Who we are

Software studio focused on clarity, quality, and results.

SintelLogic is an Austria-based digital studio that designs and builds web applications, mobile products, AI-powered chatbots, and automation systems. Every project we take on starts with understanding the business problem — and ends with a product that works reliably, scales confidently, and looks exceptional.

We work with businesses that need more than a template. Whether it's a complex web platform, a conversational AI assistant, or a streamlined internal workflow — we build it from scratch, tailored to the exact requirements of the project.

AI-first thinking

We integrate artificial intelligence where it creates real value — not as a buzzword.

Scalable architecture

Clean code and thoughtful structure so your product grows without breaking.

Clean user experience

Interfaces that are intuitive, fast, and designed with the end user in mind.

Reliable delivery

On time, on spec, with transparent communication throughout the process.

What we build

End-to-end digital expertise.

From pixel-perfect interfaces to robust backend systems — we cover the full stack of modern software development.

Frontend Development

Responsive, performant interfaces built with React, Angular, and modern CSS. Every detail is designed for speed and clarity.

Fast, scalable, user-focused

Backend Development

Node.js and Python APIs, databases, authentication, and business logic. Secure, testable, and built to handle real-world loads.

Stable APIs and business logic

Mobile Development

Cross-platform iOS and Android apps using React Native. One codebase, native performance, and a seamless experience on every device.

One codebase, all platforms

AI & Chatbots

Custom conversational AI assistants built around your business logic and brand voice. Integrated into websites, apps, and internal tools.

Tailored AI assistants

Automation

Workflow automation, data pipelines, and system integrations that eliminate repetitive work and connect your business tools.

Eliminate repetitive work

Custom Web Platforms

Full-scale web applications, dashboards, and SaaS products. Designed for performance, security, and long-term maintainability.

Built for scale and growth

Our process

From concept to launch in four clear steps.

01

Discovery

We listen, research, and map out your goals, constraints, and technical requirements.

02

Strategy

We define the architecture, user experience, and a clear roadmap for development.

03

Build

Design and development happen in iterative sprints with continuous feedback and transparency.

04

Launch & Improve

We deploy, monitor, and refine — ensuring your product performs at its best from day one.

Founder

The founder behind SintelLogic.

Alen Ovcaric

Founder & Lead Developer · Austria

Full-stack developer with deep expertise in modern web technologies, mobile app development, and AI-driven automation. Every SintelLogic project is personally architected and built to meet real business needs — no shortcuts, no templates, no generic solutions.

Custom-built web applications, not templates
AI systems that automate real workflows
Scalable architecture ready for growth
Clean, modern UI with premium user experience
End-to-end development — from idea to deployment

100%

Custom-built

No templates, no page builders — everything is engineered from the ground up.

60+

Technologies

React, Next.js, Angular, Node.js, Python, GPT-4o, Claude, and more.

3

Languages supported

English, German, and Croatian — for clients across Europe.

Full

Business focus

Every decision is driven by your business goals, not trends.

Do you have an idea, project, or business process that needs a smarter solution?

Let's talk about how we can turn it into a high-quality digital product.

Start a conversation See our work