Jan-IngenHousz-Institute/open-jii
Apr 2025 – Feb 2026
8 Months active
Languages Used
CSSJavaScriptTypeScriptC++JSONBashYAMLShell
Technical Skills
BabelBluetooth LEESLintExpoReact NativeTailwind CSS
ikatun
PROFILE
Ikatun
Ilya Katun built and modernized the mobile application for the Jan-IngenHousz-Institute/open-jii repository, focusing on device connectivity, authentication, and deployment automation. Over eight months, Ilya delivered features such as Bluetooth LE device discovery, cross-platform data integration, and offline-ready measurement workflows. He used TypeScript, React Native, and MQTT to implement robust state management, modular authentication flows, and automated CI/CD pipelines. His work included refactoring authentication logic for maintainability, enhancing UI/UX for measurement tasks, and streamlining Android build and release processes. These contributions improved reliability, user experience, and developer velocity, demonstrating depth in mobile development and system integration.
Overall Statistics
Feature vs Bugs
92%Features
Repository Contributions
16Total
Bugs
1
Commits
16
Features
11
Lines of code
55,851
Activity Months8
Your Network
5 people
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Jan-IngenHousz-Institute/open-jii: Delivered modernization of the mobile app authentication flow with a hook-based backend URI resolver, removal of the legacy login widget, and migration to a new authentication client structure. These changes improve modularity, session reliability, and maintainability, enabling faster feature iteration and reducing support overhead.
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Jan-IngenHousz-Institute/open-jii: Delivered modernization of the mobile app authentication flow with a hook-based backend URI resolver, removal of the legacy login widget, and migration to a new authentication client structure. These changes improve modularity, session reliability, and maintainability, enabling faster feature iteration and reducing support overhead.
February 2026
December 2025
5 Commits • 2 Features
Dec 1, 2025Monthly performance summary for 2025-12 focused on delivering business value through reliable offline capabilities, improved measurement UX, and streamlined deployment pipelines in the Jan-IngenHousz-Institute/open-jii repository. What was delivered: - Feature: Measurement Experience Improvements (offline-ready workflow, local upload storage with success/failure tracking, recent measurements screen, memory of answers across cycles, mutually exclusive auto-increment option, enhanced UI for results with macro messages integration). - Key commits: c02419b8ff8313d36f5d0032ed6c2e32b8d0d2f2; 23c533953b0dd3c318c940a15d7cb33b78ae81a4; e00a020d4da0045fc2986727fc14c27f92be3740. - Versioning highlights: v1.0.12, v1.0.13, v1.0.14. - Feature: Deployment and App Packaging Modernization (Expo-based mobile build script, replacing Android App Bundle flow, Google Play submission workflow, production environment setup, new app scheme, version code autoincrement, layout/environment packaging adjustments). - Key commits: 8c38fc85cb7464c58f70d99bd1b3f2b9a104f6a8; 2e38b32297364c75968f236353de9d36ad003176. Impact and value: - Improved reliability and user productivity with offline measurement workflows and sustained measurement context across cycles, enabling field data collection without network dependency. - Accelerated release cadence and reduced packaging friction through Expo-based build automation, standardized production environment, and automatic versioning. - Sleeker UI and macro messaging integration improved interpretability of results and faster decision-making for stakeholders. Technologies/skills demonstrated: - React Native/Expo, offline storage patterns, local persistence, and cross-cycle state management. - UI/UX enhancements for measurement results and macro messages. - CI/CD and deployment automation, app packaging modernization, and version automations.
December 2025
5 Commits • 2 Features
Dec 1, 2025Monthly performance summary for 2025-12 focused on delivering business value through reliable offline capabilities, improved measurement UX, and streamlined deployment pipelines in the Jan-IngenHousz-Institute/open-jii repository. What was delivered: - Feature: Measurement Experience Improvements (offline-ready workflow, local upload storage with success/failure tracking, recent measurements screen, memory of answers across cycles, mutually exclusive auto-increment option, enhanced UI for results with macro messages integration). - Key commits: c02419b8ff8313d36f5d0032ed6c2e32b8d0d2f2; 23c533953b0dd3c318c940a15d7cb33b78ae81a4; e00a020d4da0045fc2986727fc14c27f92be3740. - Versioning highlights: v1.0.12, v1.0.13, v1.0.14. - Feature: Deployment and App Packaging Modernization (Expo-based mobile build script, replacing Android App Bundle flow, Google Play submission workflow, production environment setup, new app scheme, version code autoincrement, layout/environment packaging adjustments). - Key commits: 8c38fc85cb7464c58f70d99bd1b3f2b9a104f6a8; 2e38b32297364c75968f236353de9d36ad003176. Impact and value: - Improved reliability and user productivity with offline measurement workflows and sustained measurement context across cycles, enabling field data collection without network dependency. - Accelerated release cadence and reduced packaging friction through Expo-based build automation, standardized production environment, and automatic versioning. - Sleeker UI and macro messaging integration improved interpretability of results and faster decision-making for stakeholders. Technologies/skills demonstrated: - React Native/Expo, offline storage patterns, local persistence, and cross-cycle state management. - UI/UX enhancements for measurement results and macro messages. - CI/CD and deployment automation, app packaging modernization, and version automations.
November 2025
1 Commits • 1 Features
Nov 1, 2025Month 2025-11. Delivered production-ready mobile application in Jan-IngenHousz-Institute/open-jii with enhanced device connectivity features and improved user interface. The release is captured in commit bbc9b5afae735ebc84b3898e95964d20d83af407 (feat(mobile): Production ready mobile app #765). No major bugs fixed this month. This milestone accelerates time-to-market, improves end-user experience, and strengthens the platform's device connectivity foundation for future capabilities.
1 Commits • 1 Features
Nov 1, 2025Month 2025-11. Delivered production-ready mobile application in Jan-IngenHousz-Institute/open-jii with enhanced device connectivity features and improved user interface. The release is captured in commit bbc9b5afae735ebc84b3898e95964d20d83af407 (feat(mobile): Production ready mobile app #765). No major bugs fixed this month. This milestone accelerates time-to-market, improves end-user experience, and strengthens the platform's device connectivity foundation for future capabilities.
November 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for Jan-IngenHousz-Institute/open-jii. Delivered automated Android app build workflow via GitHub Actions to build Android App Bundle (AAB) and APK. The workflow checks out code, sets up Node.js and pnpm, installs dependencies, uses EAS CLI to build the AAB, and uploads the AAB and APK as build artifacts. This work is anchored by the commit fb6664f46580369d099aac4e9092ce4e2df25d68 (feat(mobile): Finalize build script (#561)). No major bugs fixed this month. Impact: reduces manual build effort, speeds up release readiness, and improves build reproducibility across environments. Technologies demonstrated: GitHub Actions, Node.js, pnpm, EAS CLI, Android App Bundle/APK, artifact management, CI/CD best practices.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for Jan-IngenHousz-Institute/open-jii. Delivered automated Android app build workflow via GitHub Actions to build Android App Bundle (AAB) and APK. The workflow checks out code, sets up Node.js and pnpm, installs dependencies, uses EAS CLI to build the AAB, and uploads the AAB and APK as build artifacts. This work is anchored by the commit fb6664f46580369d099aac4e9092ce4e2df25d68 (feat(mobile): Finalize build script (#561)). No major bugs fixed this month. Impact: reduces manual build effort, speeds up release readiness, and improves build reproducibility across environments. Technologies demonstrated: GitHub Actions, Node.js, pnpm, EAS CLI, Android App Bundle/APK, artifact management, CI/CD best practices.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered foundational mobile app redesign and core architecture for the open-jii project, establishing a scalable navigation model, authentication flows, and foundational components for device interaction and data management to enable a robust, user-friendly mobile experience.
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered foundational mobile app redesign and core architecture for the open-jii project, establishing a scalable navigation model, authentication flows, and foundational components for device interaction and data management to enable a robust, user-friendly mobile experience.
July 2025
June 2025
2 Commits • 1 Features
Jun 1, 2025Summary for 2025-06: This month focused on delivering a secure mobile authentication experience and improving session reliability for the open-jii project, enabling smoother user onboarding and stronger authentication posture. Key outcomes include implementing NextAuth-based mobile authentication, introducing login endpoints and session retrieval, and updating navigation to reflect authenticated flows. A bug fix addressed session token extraction by aligning cookie usage to the __Secure-authjs.session-token for reliable mobile sign-ins. These efforts enhance user experience, security, and developer velocity, with clear contributor impact and measurable business value.
June 2025
2 Commits • 1 Features
Jun 1, 2025Summary for 2025-06: This month focused on delivering a secure mobile authentication experience and improving session reliability for the open-jii project, enabling smoother user onboarding and stronger authentication posture. Key outcomes include implementing NextAuth-based mobile authentication, introducing login endpoints and session retrieval, and updating navigation to reflect authenticated flows. A bug fix addressed session token extraction by aligning cookie usage to the __Secure-authjs.session-token for reliable mobile sign-ins. These efforts enhance user experience, security, and developer velocity, with clear contributor impact and measurable business value.
May 2025
4 Commits • 3 Features
May 1, 2025May 2025 (2025-05) delivered cross-platform device integration enhancements for Jan-IngenHousz-Institute/open-jii, enabling end-to-end MultispeQ 2 workflows and real-time data publishing. Key work includes Android integration for MultispeQ 2 (BT Classic and USB serial) with device discovery, scanning, and data communication; MQTT integration with testing infrastructure and a reusable device measurement widget to push scan results to a broker; and iOS BLE Multispeq support with a conditional navigator and ESLint fixes. These efforts improve data collection reliability, cross-device interoperability, and developer productivity through UI unification and better testing. While no explicit major bug fixes are logged, stability and resilience improvements were delivered, notably in MQTT connectivity and code quality.
4 Commits • 3 Features
May 1, 2025May 2025 (2025-05) delivered cross-platform device integration enhancements for Jan-IngenHousz-Institute/open-jii, enabling end-to-end MultispeQ 2 workflows and real-time data publishing. Key work includes Android integration for MultispeQ 2 (BT Classic and USB serial) with device discovery, scanning, and data communication; MQTT integration with testing infrastructure and a reusable device measurement widget to push scan results to a broker; and iOS BLE Multispeq support with a conditional navigator and ESLint fixes. These efforts improve data collection reliability, cross-device interoperability, and developer productivity through UI unification and better testing. While no explicit major bug fixes are logged, stability and resilience improvements were delivered, notably in MQTT connectivity and code quality.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025Month 2025-04 highlights: expanded mobile capabilities with BLE support and established a foundation for maintainable development. Delivered BLE scanning capability in the mobile app, enabling real-time discovery of nearby devices and interaction through an interactive device cards UI. Implemented a mobile device discovery workflow that surfaces discovered BLE devices in a list and supports user interactions on device cards. Set up a React Native Expo project with initial configurations (ESLint, Babel, Tailwind CSS) to standardize code quality, tooling, and styling across the mobile codebase. This work enables field/device discovery, improves user experience for device interactions, and accelerates future feature work through consistent tooling and design system setup. Key achievements: - Implemented BLE scanning capability and device discovery in the mobile app. - Built interactive device discovery UI with cards for discovered devices. - Established Expo-based React Native project scaffolding with ESLint, Babel, and Tailwind CSS. - Single commit: feat(mobile): Add react native BLE basic implementation (#181).
April 2025
1 Commits • 1 Features
Apr 1, 2025Month 2025-04 highlights: expanded mobile capabilities with BLE support and established a foundation for maintainable development. Delivered BLE scanning capability in the mobile app, enabling real-time discovery of nearby devices and interaction through an interactive device cards UI. Implemented a mobile device discovery workflow that surfaces discovered BLE devices in a list and supports user interactions on device cards. Set up a React Native Expo project with initial configurations (ESLint, Babel, Tailwind CSS) to standardize code quality, tooling, and styling across the mobile codebase. This work enables field/device discovery, improves user experience for device interactions, and accelerates future feature work through consistent tooling and design system setup. Key achievements: - Implemented BLE scanning capability and device discovery in the mobile app. - Built interactive device discovery UI with cards for discovered devices. - Established Expo-based React Native project scaffolding with ESLint, Babel, and Tailwind CSS. - Single commit: feat(mobile): Add react native BLE basic implementation (#181).
Activity
Loading activity data...
Quality Metrics
Correctness85.0%
Maintainability82.6%
Architecture83.8%
Performance78.8%
AI Usage28.8%
Skills & Technologies
Programming Languages
BashC++CSSJSONJavaScriptShellTypeScriptYAML
Technical Skills
API DevelopmentAPI IntegrationAPI Integration (ts-rest)API integrationAWS IoTAWS SDKAndroid DevelopmentAuthenticationBabelBluetoothBluetooth CommunicationBluetooth LECI/CDComponent ArchitectureComponent Design
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline