Treeonix
Software Built AroundYour Business

You have a specific problem. We write the code that solves it. Web apps, mobile apps, desktop tools — built from scratch to work exactly how you need them to.

Book a Free CallSee What We Build

Our Tech Stack

We pick the right tool for the job. These are the technologies we work with regularly — not a marketing list, just what we actually use.

TypeScriptReactNext.jsReact NativeNode.jsNestJSPostgreSQLGraphQLAWSReal-Time FeaturesPayment IntegrationsElectronDockerClaude API

What We Build

We cover the full stack — whatever platform your product lives on

Web Applications

From internal tools to customer-facing platforms, we build web apps that are fast, reliable, and straightforward to use. React and Next.js on the front, whatever makes sense on the back.

  • • Custom dashboards & portals
  • • REST & GraphQL APIs
  • • Authentication & user roles
  • • Deployed and monitored

Mobile Apps

One codebase, both platforms. We ship iOS and Android apps that feel native — because the UX matters as much as the functionality underneath.

  • • React Native for iOS & Android
  • • Offline support
  • • Push notifications
  • • App Store & Play Store launch

Desktop Software

When a web app isn't enough — data-heavy workflows, hardware integrations, or just needing it offline — we build desktop apps that actually perform.

  • • Electron for Windows, Mac & Linux
  • • System-level integrations
  • • Auto-update support
  • • Runs fully offline

AI & Automation

We integrate AI directly into your product — Claude API, MCP servers, custom agents, and automated workflows. Not a feature you bolt on later, but something designed into the product from the start.

  • • Claude API & Anthropic SDK
  • • MCP servers & AI agents
  • • Automated business workflows
  • • AI-assisted user features

Work We've Shipped

Real projects, live in production

NAVA d.o.o.

Live

Construction company — Serbia

A professional website for a construction company serving residential, commercial, and industrial clients. Multilingual (Serbian & English), SEO-optimized, and built for performance.

Next.jsNestJSPostgreSQLTypeScriptTailwind CSS
Visit site

What Working With Treeonix Looks Like

We're straightforward about how we work and what you can expect

You Talk to the Developers

No account managers or middlemen. You're in direct contact with the people building your product from day one.

Clear Pricing, No Surprises

We scope projects carefully and flag issues early. If something changes, we talk about it before it affects your invoice.

We Handle the Full Stack

Front end, back end, database, deployment, CI/CD — you don't need to hire five different specialists. We take care of the whole thing.

Built to Last Beyond Launch

Most clients stay with us after launch for ongoing improvements. We build with that in mind from the very start.

Let's Talk About Your Project

Book a free 30-minute call. No pitch, no pressure — just a conversation about what you're building and whether we're a good fit to build it.

What We'll Cover

What You're Building

The product, the problem, and who it's for

Technical Complexity

An honest read on what's involved and the right approach

Rough Timeline & Budget

Upfront numbers, not vague estimates

Whether We're the Right Fit

We'll tell you honestly if we're not

About Treeonix

We're experienced engineers who have built production systems across web, mobile, and desktop — and now we do it under our own name. No bloated process, no account managers in the middle — just people who know the craft and care about shipping software that actually works.

No Shortcuts

We write maintainable code and document it properly. If something is wrong, we tell you before it becomes your problem.

Direct Communication

You'll always know where your project stands. No vague updates, no waiting a week for an answer.

We Own the Outcome

When something ships, it needs to work. We test it, we monitor it, and we're there when something needs fixing.

Get Started Today

Tell us about your project and let's build something together

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