Projects

Selected case studies demonstrating product ownership, senior engineering, delivery leadership, and results across mobile, full-stack, SDK, and C++ systems.

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Equisix automation platform architecture illustration.
Equisix Full-Stack Automation Platform
A production-oriented financial automation SaaS built with React, TypeScript, and AWS.
Equisix · Senior full-stack engineer with end-to-end product ownership · February 2026 – Present
End-to-end ownership of product specifications, React UX, AWS architecture, automation reliability, and release validation.
React TypeScript AWS
Renetik Music Apps collage presenting the complete Android music production family.
Renetik Music Apps
An end-to-end product family spanning ten Android apps, a native C++ audio engine, and a VuePress website.
Renetik Music Apps · Creator, product lead, and end-to-end engineer · March 2021 – Present
Created and operates ten Android music products, their shared C++ audio engine, releases, and support website.
Kotlin C++ Android SDK/NDK
Biolinq product website presenting its glucose-sensing wearable.
Biolinq Medical SDK
Native iOS and Android SDK work for glucose-sensing medical-device integration.
Biolinq · Native SDK engineer — Android and iOS, Sequenex team · August 2022 – January 2024
Delivered native SDK and sample-app work in a multinational remote team using API-first design and early test scenarios.
Kotlin Swift Android SDK
Motorkari.cz map and rider workflow overview.
Motorkari.cz
Two actively maintained native apps serving motorcycle content, community, marketplace, maps, and rider workflows.
Motorkari.cz · Android and iOS developer — modernization, feature delivery, and product maintenance · July 2017 – August 2020; June 2024 – Present
Maintains and modernizes two established native apps while continuing product, integration, and store-release delivery.
Kotlin Java Swift
SODB 2021 Android census application screenshot 1.
SODB 2021 Slovak Census Apps
Audited native Android and iOS delivery for Slovakia’s time-limited national census.
Plaut / Bowbook — Statistical Office of the Slovak Republic census project · Lead mobile developer — Android and iOS delivery, form architecture, offline data, and releases · June 2020 – March 2021
Led matching Kotlin and Swift census apps through offline workflows, security review, UAT, and a fixed national deadline.
Kotlin Swift Android SDK
Rcherz Suite overview showing the connected archery products.
Rcherz Suite
A long-running native product suite for archery practice, community, competitions, live results, and resilient event scoring.
Bowbook / Rcherz · Mobile product developer — iOS, Android, scoring systems, modernization, and releases · April 2014 – Present
Built and maintains iOS, Android, and dedicated scoring products for practice, competition, and live event operations.
UIKit Push messaging QR scanning
LiveAgent Mobile ticket-list presentation.
QualityUnit Mobile Products
Android and iOS companion apps for established customer-support and affiliate platforms.
QualityUnit · Mobile applications developer · September 2011 – October 2012
Delivered native Android, iPhone, and iPad access to core customer-support and affiliate-management workflows.
Push notifications Java Objective-C
TV Markiza iPhone and iPad application overview.
TRIAD Advertising Applications
A collection of campaign, utility, and media mobile applications delivered for an advertising agency.
TRIAD Advertising · Mobile applications developer · January 2013 – March 2014
Turned agency concepts into four released native apps across media, campaign, and utility use cases.
Mobile UX REST APIs Campaign delivery
Renetik Android sample application screen 1.
Open Source Development
Reusable Android and iOS libraries plus a focused macOS utility developed in the open.
Renetik open source · Creator and maintainer · 2011 – Present
Maintains reusable Android and iOS foundations extracted from production work, plus a focused macOS utility.
Gradle Swift Package Manager Kotlin
Sensoneo OLO Passport collection workflow.
Freelance Web and Mobile Development
A varied set of client products spanning mobile services, data visualization, writing, food, and property software.
Various clients · Freelance software developer · 2011 – 2022
Delivered six client and independent products across native mobile, web, backend, mapping, and data workflows.
JavaScript Web development Kotlin