Five senior engineers. The entire product lifecycle between us.
Founded 2024 in Novi Pazar, Serbia — fully remote. QueUp grew out of enterprise consulting and has shipped its own products since 2025. Both founders lead every project, backed by engineers who have run systems at Microsoft, Insightful, and in 10+ published mobile apps.
Owns backend, cloud architecture, and data: .NET, Azure, ETL pipelines, and RAG agents at enterprise scale. Served Microsoft's internal cloud platform (via Akvelon) and Performance Health's data platform (via ProfitOptics). Promoted to Senior mid-engagement on a global internal platform.
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Owns web, mobile, and AI-integrated interfaces: React, React Native, and OpenAI integrations. Builds and operates the frontend of BaitulMal — web, mobile, and the white-label donation sites — end to end.
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A decade of building and operating production-critical backends. At Insightful he runs distributed systems peaking at 80M+ requests/hour; at Florence Healthcare (regulated clinical-trial SaaS) he delivered a 20% performance gain and cut recurring production bugs by 40% on a 10+ service platform. Node.js/TypeScript, Go, Kafka, PostgreSQL/MongoDB, AWS and Terraform — plus MCP servers and internal LLM tooling.
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Mobile specialist with 10+ apps published on the App Store and Google Play. Builds the React Native app for ZeroMouse, an IoT/AI hardware product reaching tens of thousands of early-access users; previously shipped the eSIM activation app for a global connectivity platform and OpenAI-powered story apps for kids. Full-stack behind the app too: Node.js, Python, Next.js and PostgreSQL.
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Full-stack engineer who takes features from spec to production. Built the third-party integration framework in the admin portal of a Microsoft data-protection product used by 200+ enterprise customers, and shipped 15 merged pull requests to OpenStreetMap's web platform. Earlier took page LCP from 2.6s to 0.9s on a streaming platform. React, TypeScript, Next.js, NestJS, Rails, PostgreSQL, Playwright.
LinkedIn ↗Three working principles
No juniors, no bench, no hand-offs between departments. A small team of experienced engineers is the selling point — we say it openly.
If your project isn't a fit, we say so on the first call. If a feature wastes your runway, we tell you before building it.
Architecture, backend, web, mobile, AI, release, iteration — one team owns the whole build. We run our own product the same way.