# Rusu Dinu-Ștefan

Rusu Dinu-Ștefan is a Senior Software Engineer, founder of CodingShadows, and an independent developer with over 50 apps launched on the App Store and Google Play Store. With 500,000+ active users, 300+ training hours delivered at universities and companies, and 70M+ views on social platforms, he is an experienced professional in software development, mentoring, and tech entrepreneurship.

## Services

- [Mobile App Development & Consulting](https://rusudinu.com/services/mobile-app-development/): Senior freelance product engineering for Flutter, Kotlin, Java Spring Boot and React — discovery, delivery, architecture, scaling, reliability and fractional technical support

## Projects

- [Food Scanner case study](https://rusudinu.com/case-studies/food-scanner/): Photograph a food product's ingredient list and get a clear analysis with OCR, including offline support for shops with weak connectivity. 300K+ installs, 4.8 rating. Product: https://scanneralimente.ro
- [BAC Romana case study](https://rusudinu.com/case-studies/bac-romana/): All essays for the Romanian Baccalaureate literary works, character analyses, literary movements, and over 500 quizzes, including audio versions. 50K+ downloads, 4.7 rating. Product: https://bacromana.com
- [Quizuri BAC Romana](https://codingshadows.com/products/quizuri-romana.html): Interactive quizzes about Baccalaureate literary works for exam preparation. 20K+ downloads, 4.4 rating
- [Drivers Data case study](https://rusudinu.com/case-studies/drivers-data/): Virtual logbook for drivers — track routes, fuel consumption, maintenance, and car expenses. 2K+ downloads. Product: https://codingshadows.com/products/drivers-data.html
- [Comentarii BAC Audio](https://codingshadows.com/products/comentarii-audio.html): Audio commentaries for Baccalaureate literary works with detailed explanations and literary analyses. 200+ downloads, 4.6 rating
- [Cosmin Savu](https://cosminsavu.ro): Personal website for Cosmin Savu, journalist for over 19 years on the "România, te iubesc!" team at ProTV. 5.0 rating

## Professional experience

- Senior Engineer (Contractor) at Dell — microservices and libraries with Kotlin and Spring Boot
- Software Engineer at Wolt — product development with Kotlin and React
- Senior Software Engineer at Tazz by eMAG — development and maintenance of the platform using Java Spring Boot and Angular
- Trainer at Deutsche Bank Cloud School — training and mentoring students in cloud technologies and software development
- Teaching Assistant at University POLITEHNICA of Bucharest — teaching assistant for programming and software engineering courses
- Founder of CodingShadows — custom product development with Java, Flutter, Angular, and React

## Education

- Master in Software Engineering — University POLITEHNICA of Bucharest (Oct 2024 – Jun 2026)
- Bachelor's in Computer Engineering — University POLITEHNICA of Bucharest (Oct 2020 – Jun 2024)
- Tudor Vianu National High School of Computer Science (Sept 2016 – May 2020)

## Volunteering

- [Romanian National AI Olympiad](https://olimpiada-ai.ro/): Infrastructure & DevOps — Kubernetes, RabbitMQ, and GitHub Actions setup for the platform (2025)
- [National & Online "InfoEducatie" Olympiad](https://infoeducatie.ro): Jury & Mentor (2021, 2022)
- [Hardcore Entrepreneur](https://he.upb.ro/): Organizer, Trainer, Jury (2021–2025)

## Achievements

- 1st Place — UPB Scientific Session 2022
- 2nd Place — UPB Scientific Session 2021
- 2nd Place — National InfoEducatie 2020
- 3rd Place — Online InfoEducatie 2020
- Top 15% — National InfoEducatie 2019

## Conferences

- [Speaking and media archive](https://rusudinu.com/speaking/): Newest-first conference talks and television appearances with stable on-domain destinations and original sources where available
- [592 Builds Later](https://rusudinu.com/insights/592-builds-later/): DevTalks 2026 article about deciding which production features to keep, reshape or remove. Event profile: https://www.devtalks.ro/speakers/560-dinu-stefan-rusu
- [Scaling Flutter to 100K MAU as a Solo Developer](https://rusudinu.com/insights/scaling-flutter-100k-mau/): DevTalks 2025 article on performance, cost and operational leverage. Event profile: https://www.devtalks.ro/speakers/560-dinu-stefan-rusu
- [Indie App Economics After a Decade](https://rusudinu.com/insights/indie-app-economics/): DevCon 2025 article on attention, free users, pricing, infrastructure and sustainable product portfolios

## Scientific publications

- [Decentralized Requirements Management in Software Engineering](https://www.researchgate.net/publication/390228224_DECENTRALIZED_REQUIREMENTS_MANAGEMENT_IN_SOFTWARE_ENGINEERING_IMPROVING_THE_EDUCATIONAL_PROCESSES_BY_LEVERAGING_BLOCKCHAIN_BASED_TECHNOLOGIES): Conference Paper, March 2025 — 19th International Technology, Education and Development Conference
- [Facilitating Trust and Mobility in Education Using Microcredits and Verifiable Credentials](https://www.researchgate.net/publication/390223585_FACILITATING_TRUST_AND_MOBILITY_IN_EDUCATION_USING_MICROCREDITS_AND_VERIFIABLE_CREDENTIALS_WITH_THE_HELP_OF_DISTRIBUTED_LEDGER_SYSTEMS): Conference Paper, March 2025 — 19th International Technology, Education and Development Conference
- [LIFELINE — Emergency Patient Data in a Distributed Manner](https://www.researchgate.net/publication/368343144_LIFELINE-Emergency_Patient_Data_in_a_Distributed_Manner): Conference Paper, October 2022 — IEEE International Conference on Blockchain, Smart Healthcare and Emerging Technologies

## Media appearances

- Full archive: https://rusudinu.com/speaking/
- Geografie BAC at ILikeIT — PRO TV, 2026
- ONIA at ILikeIT (Monday) — PRO TV, 2026
- ONIA at ILikeIT (Sunday) — PRO TV, 2026
- Food Scanner at Doctor de Bine — PRO TV, 2025
- [Food Scanner at ILikeIT](https://stirileprotv.ro/stiri/ilikeit/aplicatia-scanner-alimente-ne-anunta-printr-un-simplu-click-daca-un-produs-este-bun-sau-nu-pentru-sanatatea-noastra.html) — PRO TV, 2024
- Food Scanner at Euronews — Euronews Romania, 2024
- Lifeline at ILikeIT — PRO TV, 2022
- Drivers Data at ILikeIT — PRO TV, 2019

## Social media & links

- [Facebook](https://www.facebook.com/rusudinustefan)
- [Instagram](https://www.instagram.com/dinuustefan)
- [GitHub](https://github.com/rusudinu)
- [LinkedIn](https://www.linkedin.com/in/rusudinu/)
- [App Store](https://apps.apple.com/us/developer/dinu-stefan-rusu/id1697162965)
- [Google Play](https://play.google.com/store/apps/dev?id=7698429136283621821)
- [CV / Resume (PDF)](https://raw.githubusercontent.com/rusudinu/resume/main/Rusu%20Dinu%20Stefan%20resume.pdf)

## Contact

- Website: [https://rusudinu.com](https://rusudinu.com)
- Email: [dinu@codingshadows.com](mailto:dinu@codingshadows.com)

## Last updated

July 29, 2026