Experience
René Doháň · Software Developer · 2005 – Present
Native Android apps focused on live audio recording and processing
●Music Studio: all-in-one multi-track recording, sequencing, looping and editing music production software
●FxRack: real-time audio effects rack with customizable effects
●Mix: multi-channel mixer for live balancing and gain control
●Metronome: precision tempo guide with visual and haptic cues
●Looper: multi loop live recording with overdub support and live performance capabilities
●MIDI Sequencer: pattern-based step sequencer for MIDI hardware
●MIDI Controller: customizable on-screen controls for external synths
●Drums: all-in-one drums focused app
●Piano: all-in-one piano focused app
●Guitar: all-in-one guitar focused app
Technologies: Kotlin for UI & app logic, C++ audio engine for low-latency DSP, Firebase (Realtime Database, Cloud Functions, Analytics), automated testing with Espresso & UIAutomator, unit testing with JUnit & Mockito.
Renetik Music Apps
Development of music production apps
December 2023 – June 2025
Web development on an existing project
●Contributed to an existing web application using PostgreSQL for data storage
●Implemented backend features with PHP and the Yii framework
●Containerized services and managed deployment workflows with Docker
Technologies: PostgreSQL, PHP, Yii Framework, Docker, Git.
Cross-platform app enhancements and legacy code modernization
●Working on both Android and iOS platforms: refactored and improved legacy Java/Kotlin code base, and evolved my own Swift app version originally developed three years ago
●Google Play – Motorkari.cz Android: optimized performance, modernized UI for material design compliance
●App Store – Motorkari.cz iOS: updated to Swift 5, integrated new push-notification workflows and background sync
Technologies: Kotlin & Java (Android SDK), Swift & Objective-C (iOS SDK), MVVM architecture, RESTful APIs, Firebase Cloud Messaging, Git for CI/CD.
Development of native iOS apps, SDKs, and medical device integration
●Collaborated on the iOS and Android SDK for glucose-scanning medical devices in diabetes care
●Operated in a multinational remote team using Scrum, Git flow, code reviews and an API-first design approach
●Defined and implemented Gherkin-based test scenarios during the design phase for extensive QA coverage
●Secured FDA review and approval by adhering to best practices in medical software development
●Extended existing iOS applications and built example iOS & Kotlin sample apps to demonstrate SDK integration
Android app development, .NET backend, SQL database
●Sensoneo OLO Passport App, Server API, DB Kotlin Android App, .Net C# GraphQL API, MySql Database
End-to-end development of Android apps, website, graphics, and design
●Renetik Instruments Music Production Android Apps & Website
Android & iOS apps for national census
●For SODB 2021 Android & iOS apps Census of Republic of Slovakia, native mobile applications iOS & Android
Native mobile and web development with backend support as needed
●Charts for Bot.Media Configurable Vue.js chart component using chart.js and written in typescript
●Om Writer Android app in Kotlin, released as first application by Renetik Software
Mobile, web, and backend development
●Hand Writer Android app in Kotlin, web in Vue.js (Typescript), backend developed with Firebase
●Property Farmer Android app in Kotlin, Amazon S3 storage, Spring backend hosted on Heroku
iPhone & iPad app development for Motorkari.cz
●Motorkari iPhone and iPad app originally in Objective-C, now rewritten to Swift
Development of Rcherz suite: iOS, Android, and Scoring apps
●Rcherz iOS big iPhone / iPad app written in Objective-C
●Rcherz Android large Android application written in Java
●Rcherz Scoring mission critical app for Android used for scoring competitions
Development of iOS/Android libraries and hobby apps
●Renetik Android Software library written in Kotlin used as base for my professional projects
●Renetik iOS Software library in Objective-C and Swift, used in my professional projects
●Force Quit Small desktop application for MacOS written in objective-c
Development of diverse Android and iOS applications
●Promile Lady Android app for testing of alcohol level after some drinks, styled for woman
●Pilsner & Kozel Compass iPhone app for finding closest bar for specific beer brand
●TV Markiza Archiv iPhone and iPad app for TV Markiza
iOS and Android app development
●Live Agent Mobile Two apps, one for Android and other for iPhone/iPad
●Post Affiliate Pro Mobile Two applications, for iPhone and Android, for Quality Unit
●Taxicar Two Android native applications in Java similar to Uber app, that did'nt exist back then.
●Regiofood Android as well as iPhone and iPad applications in Java and Objective-C respectively
Various Clients
Freelance Developer
2010 – 2013
Full-stack development on SaaS and desktop tools
●Agile team development (Scrum, TDD, pair programming)
●Web app: Live Agent Pro – GWT, PHP, JavaScript, MVP
●PDF parser/generator in PHP (Adobe PDF spec)
●Maintenance of Aff Notify, Unit Miner Studio
PDF Viewer app for magazine publisher
Java (Swing), PHP, PDF libraries
Java and C# desktop applications
●Unit Miner script editor (Eclipse RCP)
●J2EE web apps (JSF)
●OCR app in C# for U.S. client
●Wireframe editor (cancelled)
Bachelor’s Degree in Computer Software Engineering
Bachelor's degree
Slovak Technical University, Bratislava
Student
2001 – 2005
Telecommunications company
HTML, Linux, wireless networks; systems setup and installation
MOVYS, a.s.
Technician & Web Administrator
2000 – 2001
IT support for architectural computing
Windows, AutoCAD, networking, Linux
University of Architecture, Bratislava
PC Administrator
1999 – 2000
Computer assembly, software installation, and customer service
Hands-on experience with hardware, networking, and retail support
Marsoft Computer s.r.o.
Technician & Sales
1997 – 1999