QueUp Software

QueUp Software (QUE UP d.o.o.) is a senior software studio based in Novi Pazar, Serbia, in the Balkans. Founded in 2024, we design, build and maintain websites, web shops, booking platforms, mobile apps and AI automation for clients across the Balkans, Europe and the US.

We are a senior-only team of five engineers: no juniors, no bench and no hand-offs between departments. Both founders lead every project. We pick the stack per project: Node.js, Python, Go, PHP, .NET and Azure on the backend and cloud; React, Next.js and React Native on the front end; OpenAI and RAG for AI. Through partners we have worked on Microsoft's internal cloud platform (via Akvelon) and Performance Health's data platform (via ProfitOptics).

What we build: company websites and web shops (including Shopify); platforms, booking systems and SaaS; mobile apps for iOS and Android; AI and automation such as RAG agents and document workflows; modernization and data (cloud migration, ETL, reporting); and senior engineers embedded in your team for 6–18 months on a B2B contract.

We also ship our own products: HalalBooker, an Umrah booking marketplace for the Balkans (halalbooker.com), and BaitulMal, a donation-tracking platform for non-profits.

How we work: a free 30-minute intro call with both founders, then a fixed proposal with scope, timeline and price in writing. Weekly demos, direct Slack or Teams access, and code in your repositories from day one. Indicative prices start at €500 for a website or web shop, €5,000 for a platform or mobile app, €2,000 for an AI pilot, and €2,500/month for a senior engineer.