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Stéphane PROHASZKA

PROFILE

Stéphane Prohaszka

Over 11 months, contributed to LedgerHQ/ledger-live and device-sdk-ts by building and refining blockchain integrations, transaction workflows, and hardware wallet features. Delivered new coin modules, unified fee estimation APIs, and enhanced swap and signing capabilities, focusing on reliability and maintainability. Applied TypeScript and JavaScript to implement robust integration and unit tests, streamline code organization, and improve error handling. Addressed bugs in fee estimation and transaction processing for networks like Tron, Solana, Polkadot, and TON, while expanding test coverage and documentation. Maintained a strong emphasis on CI/CD, dependency management, and release hygiene to support safe, scalable product evolution.

Overall Statistics

Feature vs Bugs

76%Features

Repository Contributions

95Total
Bugs
8
Commits
95
Features
26
Lines of code
25,659
Activity Months11

Work History

March 2026

36 Commits • 9 Features

Mar 1, 2026

In March 2026, we advanced Hyperliquid initiatives across LedgerHQ/device-sdk-ts and LedgerHQ/ledger-live, delivering a more robust signing workflow, expanded multi-order capabilities, and stronger test coverage while improving reliability and developer ergonomics. The work emphasized business value through safer signing, flexible trading workflows, and clearer API/type safety, supported by targeted quality improvements and documentation.

February 2026

12 Commits • 2 Features

Feb 1, 2026

February 2026: LedgerHQ/device-sdk-ts focused on delivering the Hyperliquid Signer with Ledger-based transaction and action signing, capturing quality improvements, and stabilizing tooling. The work emphasizes business value by enabling secure signing workflows, integrating with the sample app, updating UI and docs, and ensuring future-proof dependencies.

September 2025

4 Commits • 1 Features

Sep 1, 2025

LedgerHQ/ledger-live — 2025-09: Implemented Canton Combine Feature for Transaction Processing with initial merge of transaction details and a signature, backed by tests; removed an obsolete encoding utility and refined the combine call signature. Fixed missing SUI type export for ledger/bcs by adding a new type definition and updating Jest mapping to ensure robust type checking and module resolution. These efforts enhance transaction reliability, developer experience, and overall product quality.

August 2025

11 Commits • 3 Features

Aug 1, 2025

Concise monthly summary for 2025-08 focusing on Canton app integration work in LedgerHQ/ledger-live. Delivered integration testing framework and Speculos tests for Canton app, SignHash capability, signTransaction improvements, and Canton package maintenance. These efforts expand test coverage, improve reliability of Canton-related flows, and simplify maintenance, delivering business value through robust QA, reduced risk, and cleaner dependency surface. Tech stack includes Speculos, Jest, TypeScript, and node-speculos-http transport.

June 2025

1 Commits

Jun 1, 2025

June 2025 monthly summary for LedgerHQ/ledger-live focusing on a critical TON (jetton) transfer fee estimation fix. Implemented a bug fix to ensure fees are calculated from the transaction amount and added a maximum fee cap when sub-accounts are present to prevent excessively high charges. The change reduces fee surprises for users during TON transfers and improves the reliability of fee estimation.

May 2025

1 Commits

May 1, 2025

May 2025 monthly summary for LedgerHQ/ledger-live: Maintained and improved test reliability for Polkadot API fee estimation. Delivered a precise test fix to ensure the fee estimation logic is validated against the actual value returned by module.estimateFees, reducing runtime flakiness and guarding against regression in the fee estimation feature.

April 2025

8 Commits • 5 Features

Apr 1, 2025

In 2025-04, Ledger Live delivered cross-module feature work, stronger testing coverage, and notable code-quality improvements that together enhance reliability, accelerate safe rollouts, and deliver clearer insights for product and business teams. Key features and optimizations were implemented with an eye toward cross-coin consistency, maintainability, and release hygiene.

March 2025

1 Commits • 1 Features

Mar 1, 2025

March 2025: Tron Module Refactor and Test Improvements in Ledger Live. Refactored the Tron coin module to improve integration tests and utility functions, removed commented-out code, simplified signature handling, and resolved potential duplication in bandwidth information extraction to boost clarity and maintainability, guided by code-review feedback.

February 2025

14 Commits • 4 Features

Feb 1, 2025

February 2025 monthly summary for LedgerHQ/ledger-live focusing on business value and technical accomplishments in the Tron and NEAR domains, plus improvements to testing/CI. Delivered foundations for Tron module, balance and transaction capabilities, addressed NEAR spendable balance calculation, and strengthened test infrastructure. These workstreams set the stage for rapid feature rollout and more reliable asset operations.

January 2025

6 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for LedgerHQ/ledger-live focusing on swap feature enhancements and LLM compatibility fixes. Delivered SPL token swap support on Solana, enhanced UI currency handling, and internal data model refinements, accompanied by developer-facing documentation/export updates. Fixed currency data handling issues affecting LLM-driven workflows and improved overall stability.

October 2024

1 Commits

Oct 1, 2024

2024-10 Monthly work summary for LedgerHQ/ledger-live. Focused on improving reliability of the Polkadot coin module sign operation tests by removing network dependencies and enforcing deterministic metadata handling. This reduced test flakiness and accelerated CI feedback.

Activity

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Quality Metrics

Correctness89.0%
Maintainability87.6%
Architecture85.8%
Performance84.4%
AI Usage28.6%

Skills & Technologies

Programming Languages

JSONJavaScriptMarkdownTypeScriptYAML

Technical Skills

API DesignAPI DevelopmentAPI IntegrationAPI designAPI developmentBackend DevelopmentBlockchainBlockchain DevelopmentCI/CDChangelog ManagementCode FormattingCode OrganizationCode RefactoringCoin Module DevelopmentCryptocurrency

Repositories Contributed To

2 repos

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

LedgerHQ/ledger-live

Oct 2024 Mar 2026
10 Months active

Languages Used

JavaScriptTypeScriptMarkdownYAML

Technical Skills

JavaScriptMockingTypeScriptUnit TestingAPI IntegrationChangelog Management

LedgerHQ/device-sdk-ts

Feb 2026 Mar 2026
2 Months active

Languages Used

JSONJavaScriptMarkdownTypeScriptYAML

Technical Skills

API designAPI developmentJavaScriptNodeNode.jsReact