# Danilo Stoletović > Full-Stack Developer • Multiplatform & Systems Builder. Freelance and project engagements, working remotely. Canonical website: https://danilostoletovic.com/ [Discuss your project](https://danilostoletovic.com/#contact) · [Explore services](https://danilostoletovic.com/#offers) ## Your idea deserves to see the light. I turn ideas into working apps, websites, and AI integrations. From the circuit to the screen. And sometimes, all the way to the wheels. [Explore the work](https://danilostoletovic.com/#case-studies) · Ask Ana on the homepage. The browser portfolio starts with an introduction and service choices. Its “Open the hood” archive is collapsed until requested. Hardware, AI, mobile, websites and experiment filters organize all five projects; the Other/all-projects category includes every project. Open a case study to choose its overview, build, evidence, or result. Complete technical articles remain available at their canonical links below. For 3+ years, I've taken software from an idea through architecture, implementation, and release: native Android and Windows apps, Google Play and Microsoft Store publishing, and web deployments at the edge. ## What I can solve ### Mobile app development — I have an idea. **From idea to Play Store.** You have a product in mind and need someone to turn it into usable software. I can take it from a prototype or MVP through development, integration, and production preparation. The idea is the easy part. Annoyingly, the app still needs building. Flutter and native Android; multiplatform applications, APIs and backend integration, practical AI features, deployment, and Google Play preparation. Store approval is up to the store. [Explore app development](https://danilostoletovic.com/services/mobile-app-development/) [Build it with me](https://danilostoletovic.com/#contact) ### Business websites & integrations — I run a small business. **You run the business. I’ll handle the tech.** A website, email, a booking flow, and systems that actually talk to each other. One person to work through the technical setup with you, from first configuration to deployment and maintenance. You probably didn’t start a business because you love configuring DNS. Websites and redesigns, domains, DNS, Cloudflare, hosting, business email, forms, booking systems, automation, API and AI integrations. [Fix my tech](https://danilostoletovic.com/#contact) ### Linux / VPS troubleshooting — My server keeps falling over. **Your server is constantly falling down? You know who to call.** Tell me what is failing and what changed. I can investigate the deployment, work through the failure, and help make the setup easier to operate. “It worked locally” is, sadly, not a hosting strategy. Linux and VPS/server administration, Docker, reverse proxies, Cloudflare, DNS, migrations, API hosting, debugging, monitoring, basic infrastructure hardening, and production troubleshooting. [Make it stay up](https://danilostoletovic.com/#contact) ### Website development — I just need a website. **Sometimes you just need a good website.** A fast, responsive, maintainable site that does its job. A portfolio, business site, landing page, or redesign doesn’t need to become a huge software project. Your opening hours probably don’t need their own engineering department. Responsive implementation, performance, SEO foundations, deployment, and domain/DNS configuration. [Explore business websites](https://danilostoletovic.com/services/business-websites/) [Build my site](https://danilostoletovic.com/#contact) Not sure which one you need? Ask Ana on the homepage, or email me. ## Things I've built ### YOLO Smart Vehicle A Raspberry Pi 5 vehicle that sees the world with YOLO and takes instructions from a custom Android app. Computer vision, motor control, and live video. Camera capture, inference, and motor control are kept separate so a busy vision pipeline doesn't hold up the vehicle. - Technologies: Python, Raspberry Pi 5, Kotlin / Jetpack Compose, Docker. - 4th place + Special Award at the 10th Galaksija Cup National STEM Championship. - 30 FPS camera feed, on-device detection, live video and telemetry. - [Explore the project](https://smartvehicle.dev/) - [Android source](https://github.com/smartvehiclelab/android-client) [Read the Smart Vehicle case study](https://danilostoletovic.com/case-studies/smart-vehicle/) ### Class Timetable An open-source scheduling app for students and educators, built across platforms with Flutter / Dart and Material 3. - [Read the Class Timetable case study](https://danilostoletovic.com/case-studies/class-timetable/) - [Explore the repository](https://github.com/danilostoletovic/class-timetable) ### PromptUI — in beta An experimental React and TypeScript workspace that streams task-shaped tables, charts, forms, and steps with OpenUI. The owner-supplied screenshot shows its labeled offline demo welcome screen. - [Read the PromptUI case study](https://danilostoletovic.com/case-studies/promptui/) - [Explore the repository](https://github.com/danilostoletovic/PromptUI) ### Secretary — case study 02 A lightweight browser interface connects to a TypeScript Cloudflare Worker and the OpenAI Responses API. Public knowledge is maintained separately from visitor messages. Credentials stay server-side; each request supplies optional bounded history without a server-side conversation database. [Read the Secretary case study](https://danilostoletovic.com/case-studies/secretary/) ### This portfolio Semantic HTML and CSS on Cloudflare Pages, with a small JavaScript interface connected to a separate Cloudflare Worker for the virtual Secretary. Content works without JavaScript. A separately hosted onion mirror remains linked in the homepage footer. - [View source](https://github.com/danilostoletovic/portfolio) ## Case studies — Inside the build - [This portfolio](https://danilostoletovic.com/case-studies/portfolio/): A lightweight Cloudflare workshop with static content and an optional Ana interface. The problem, the decisions, and the working result. 1. [Smart Vehicle](https://danilostoletovic.com/case-studies/smart-vehicle/) 2. [Secretary](https://danilostoletovic.com/case-studies/secretary/) 3. [Class Timetable](https://danilostoletovic.com/case-studies/class-timetable/) 4. [PromptUI](https://danilostoletovic.com/case-studies/promptui/) ## How I work 1. Tell me the problem; no technical specification needed. 2. I explain the technical approach and we agree on scope. 3. I build, integrate, and deploy the agreed result. 4. You get a working delivery and clear handover; we discuss maintenance needs as part of the scope. ## What clients say ### Michael Johnson — United States > Danilo was awesome to work with. I came in with a pretty rough idea of what I wanted, and he turned it into an Android app that actually feels polished and ready to use. Communication was quick, changes were handled without any drama, and he caught a couple things I hadn’t even thought about. Would absolutely work with him again. — Michael Johnson, Android App Client ### James Smith — United Kingdom > We needed a new website without turning it into a massive, drawn-out project. Danilo understood the brief quickly, asked sensible questions and just got on with it. The finished site looks great on both desktop and mobile and, importantly, is easy for us to actually use. Very pleased with the result. — James Smith, Website Client ### Anna Müller — Germany > Danilo integrated the AI functionality into our existing system and delivered exactly what we discussed. What I appreciated most was that he did not overcomplicate the solution. He explained the technical decisions clearly, tested the integration properly and was reliable throughout the project. The implementation has been stable and works well in our existing workflow. — Anna Müller, AI Integration Client ## About I'm a full-stack developer and multiplatform & systems builder, and a final-year Electrical & Computer Science student at ETŠ Nikola Tesla with a 5.00 GPA. ### What the tools are for - Applications people can use: Android, Windows and multiplatform applications, APIs and integrations. Kotlin, Jetpack Compose, Flutter, Dart, WinUI, C#. - Websites and connected systems: responsive sites, backend services and SEO foundations. HTML & CSS, JavaScript, React, Node.js, Python, Programmatic SEO. - Infrastructure that runs the software: Linux / systemd, Raspberry Pi, Docker, GitHub Actions, Cloudflare, Vercel. Provisioning and administering a Hetzner Cloud Linux VPS over SSH, including networking, deployment, and troubleshooting. - Practical AI: API integration, assistants, and automation. The Secretary connects this site to a Cloudflare Worker; Smart Vehicle runs computer vision on a Raspberry Pi. If your business needs a five-page website, I won’t sell you a distributed microservice architecture. ## Services Software development across Android, cross-platform mobile, Windows desktop, web and backend systems, including app store publishing and edge deployments. Open to engineering advisory and technical collaborations. ## Contact Open to freelance work, engineering advisory, and technical collaborations. - [Email](mailto:contact@danilostoletovic.com): contact@danilostoletovic.com - [Phone](tel:+381677732060): +381677732060 - [GitHub](https://github.com/danilostoletovic) - [LinkedIn](https://linkedin.com/in/danilostoletovic) - [Upwork](https://www.upwork.com/freelancers/danilostoletovic) - [Fiverr Pro](https://pro.fiverr.com/freelancers/stoletovicd) ## Ask Ana The optional virtual Secretary on the homepage answers questions about Danilo’s work and technologies. Email or the professional profiles above are the direct contact routes. The portfolio remains readable without JavaScript. ## Official media and agent resources - [AI resource catalog](https://danilostoletovic.com/.well-known/ai-catalog.json) - [Portrait](https://danilostoletovic.com/img/profilePicture.avif) - [DS logo](https://danilostoletovic.com/img/logo.avif) - [Agent guidelines](https://danilostoletovic.com/AGENTS.md) - [LLM context](https://danilostoletovic.com/llms.txt) - [Crawler permissions and content signals](https://danilostoletovic.com/robots.txt) © 2026 Danilo Stoletović ## News / Press — Coverage & recognition Occasionally, things I build escape GitHub and end up in the news. - [Niška Priča](https://niskaprica.rs/drustvo/niski-tesla-sa-kolegama-medju-najboljima-u-srbiji/) — 2026 / PRESS. Niš students recognized at Galaksija Cup. Reports on Danilo’s special award for Pametno vozilo Yolo. - [Blic](https://www.blic.rs/biznis/tech/ovo-dva-tehnoloske-resenja-su-odnela-pobedu-na-10-galaksija-kupu-2026/6vt13wc) — 2026 / PRESS. Galaksija Cup 2026: recognized projects. National coverage lists Danilo and Pametno vozilo Yolo among the special-award recipients. - [PC Press](https://pcpress.rs/pobednici-galaksija-kupa-2026-logopedski-uredaj-iz-novog-sada-najbolji-nagradeni-i-podvodni-dron-iz-nisa-i-pametna-invalidska-kolica-iz-cacka/) — 2026 / PRESS. Technology coverage of Galaksija Cup. Includes Pametno vozilo Yolo in the competition’s special-award results. - [Nauka Telegraf](https://nauka.telegraf.rs/naucne-zanimljivosti/4300950-pobednici-galaksija-kupa-2026-logopedski-uredjaj-iz-novog-sada-najbolji) — 2026 / PRESS. Science coverage of Galaksija Cup. Names Danilo and Pametno vozilo Yolo in the recognized projects. - [Metropolitan University](https://www.metropolitan.ac.rs/novosti/mladi-it-talenti-stvarali-prve-digitalne-projekte-na-make-it-day-met-2026/) — 2026 / COMPETITION. 2nd place — AI assistant competition, Niš. Official Make IT Day @ MET 2026 results: Napravi AI asistenta. - [Galaksija Cup](https://galaksijakup.rs/pobednici-galaksija-kupa-2026/) — 2026 / AWARD. Special recognition — Pametno vozilo Yolo. Official results confirm the award for a notable result (nagrada za zapaženi rezultat). These are coverage and official results, not endorsements.