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Jiří Čermák

PROFILE

Jiří Čermák

Jiri Cermak contributed to the trezor/trezor-suite and trezor/trezor-firmware repositories by delivering features that enhanced cross-network analytics, security, and user experience. He integrated ADA support into graph features, refined UI/UX with contextual tooltips and receive-address utilities, and strengthened security by disabling sensitive actions when devices were compromised. Jiri modernized the codebase through dependency and build tooling upgrades, including Redux Toolkit and webpack, and improved performance with targeted polyfill optimizations. His work, primarily in TypeScript and JavaScript, included analytics integration, state management, and component refactoring, resulting in a more robust, maintainable, and scalable platform for desktop cryptocurrency applications.

Overall Statistics

Feature vs Bugs

63%Features

Repository Contributions

51Total
Bugs
11
Commits
51
Features
19
Lines of code
7,494
Activity Months2

Work History

October 2025

29 Commits • 9 Features

Oct 1, 2025

October 2025 (trezor/trezor-suite): Delivered core features to enhance security visibility, data accuracy, and user experience, while modernizing the codebase with critical tooling upgrades. Key outcomes include MEV protection analytics integration, fiat-based token sorting, SOL rewards UX improvements, and targeted refactors that improve maintenance and reliability. These efforts drive measurable business value: clearer analytics, improved token decision-making for users, more robust reward information, and a more scalable, secure platform ready for rapid iteration.

September 2025

22 Commits • 10 Features

Sep 1, 2025

September 2025 highlights: Delivered cross-network graph feature integration with ADA support, extensive UI/UX refinements, and security hardening across trezor-suite and firmware. Achievements include multi-network feature propagation and backend-driven configuration; UX improvements with receive-address utilities and contextual tooltips; performance and polyfill optimizations; and a Hoodi-based Ethereum testnet upgrade for firmware.

Activity

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Quality Metrics

Correctness92.4%
Maintainability91.2%
Architecture90.0%
Performance87.4%
AI Usage20.4%

Skills & Technologies

Programming Languages

CJSONJavaScriptNodePythonSVGTypeScriptYAMLcssnode

Technical Skills

API IntegrationAnalyticsAnalytics IntegrationBlockchainBuild System ManagementBuild ToolsCode MaintenanceCode OrganizationCode Ownership ManagementCode QualityComponent DevelopmentComponent Library DevelopmentComponent RefactoringDependency ManagementDesktop Application Development

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

trezor/trezor-suite

Sep 2025 Oct 2025
2 Months active

Languages Used

JavaScriptSVGTypeScriptcsstsxJSONNodeYAML

Technical Skills

API IntegrationBuild ToolsCode MaintenanceCode OrganizationCode QualityComponent Refactoring

trezor/trezor-firmware

Sep 2025 Sep 2025
1 Month active

Languages Used

CPython

Technical Skills

BlockchainEthereumFirmware DevelopmentTestnet Management

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