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Oleksii

PROFILE

Oleksii

Over twelve months, Omblinda contributed to LedgerHQ/ledger-live and ledger-app-database by building and refining blockchain asset integrations, swap functionality, and transaction processing. She delivered end-to-end Aptos and Zcash token support, enhanced swap capabilities, and improved test coverage and reliability across hardware and software stacks. Her work included API integration, TypeScript and JavaScript development, and configuration management to enable features like Zcash swaps and Celo app toggles. By focusing on robust data modeling, error handling, and UX clarity, Omblinda reduced technical debt, improved user guidance, and established scalable foundations for future asset support, demonstrating depth in cross-chain cryptocurrency engineering.

Overall Statistics

Feature vs Bugs

89%Features

Repository Contributions

34Total
Bugs
2
Commits
34
Features
17
Lines of code
26,205
Activity Months12

Work History

January 2026

1 Commits • 1 Features

Jan 1, 2026

January 2026 (2026-01) — LedgerHQ/ledger-live delivered a focused UX improvement to hardware compatibility guidance in the swap flow. Implemented a user-facing message that Ledger Nano S does not support swapping Zcash, improving user awareness and device compatibility guidance. The change is a low-risk, single-commit addition. No major bugs fixed this month. Overall impact: clearer guidance for Zcash users, reduced potential support volume, and better alignment with product goals around transparency of device capabilities. Technologies/skills demonstrated: front-end development (JavaScript/TypeScript), UX copy integration, version control and traceability, and collaborative development across the LedgerHQ/ledger-live repo.

December 2025

1 Commits • 1 Features

Dec 1, 2025

Month: 2025-12 | Repository: LedgerHQ/ledger-app-database Overview: This month focused on delivering Zcash swap functionality by updating appFlags and expanding cryptocurrency transaction capabilities, enabling users to swap Zcash within the ledger app. The work strengthens asset interoperability and aligns with the roadmap for broader cross-asset swaps. What was delivered: - Implemented Zcash swap functionality by updating appFlags and expanding cryptocurrency transaction capabilities in the ledger-app-database. - Integrated swap capability with the existing swap framework to enable end-to-end Zcash swaps. - Established groundwork for scalable asset swap support in the database layer to accelerate future additions. Bugs and reliability: - No major bugs fixed this month (no critical regressions reported in the scope). Impact and business value: - Expanded transaction capabilities and asset interoperability for Zcash, reducing friction for users and enabling cross-asset liquidity within the Ledger ecosystem. - Positions the product for quicker addition of new assets and swap features, supporting growth in supported currencies and potential revenue channels. Technologies and skills demonstrated: - Feature development and flag-driven capability enablement (appFlags) in a cryptocurrency wallet context. - Transaction logic extension for Zcash; repository: LedgerHQ/ledger-app-database. - Git-based collaboration, commit hygiene, and cross-functional coordination to integrate swap support.

October 2025

2 Commits

Oct 1, 2025

October 2025 (LedgerHQ/app-exchange): Visual regression test assets were updated to reflect the current UI across Celo swap and related modules. This work included refreshing screenshots and snapshots to align with UI changes, driven by two commits: 5bb14023a395ede8d9ec09832d83c67543f8ea1d (Update screenshots) and 0600d9bfc9b1331b836a903e95681da5df0c8e9d (update snapshots flex, nanox, nanosp). Impact: reduces regression flakiness, improves CI reliability, and accelerates feedback on UI changes, enabling more stable releases and higher confidence in visual quality across the product.

September 2025

3 Commits • 3 Features

Sep 1, 2025

September 2025: Progress across LedgerHQ repositories focused on groundwork for upcoming features, code quality improvements, and strengthened test coverage. Delivered foundational Celo swaps scaffolding in the ledger-app-database, removed an unnecessary nanos dependency to simplify maintenance, and enhanced App-Exchange regression test accuracy through updated snapshots. No major user-facing bug fixes were completed this month; the work reduced risk and prepared the stack for rapid feature delivery in Q4.

August 2025

1 Commits • 1 Features

Aug 1, 2025

Monthly work summary for 2025-08: LedgerHQ/ledger-app-database focused on enabling Celo App swap capability through configuration and dependency updates. No new code was required; this change makes the swap feature readily toggleable in production with minimal risk. The work is backed by commit 04bb809410012e2384948cf1067ae843705fc1c7 (message: Update celo app to support swap).

July 2025

11 Commits • 3 Features

Jul 1, 2025

July 2025 Ledger Live — Zcash feature delivery, test coverage, and compatibility work across the Ledger hardware and software stack. 1) Key features delivered: - Zcash Transaction Processing Enhancements in hw-app-btc: added Sapling and Orchard data support, deshielded transactions, and improved transaction splitting/validation. Commits include 21fc6199f63a7bc6bee23a8b135f19aaaf5330a7, e9c62aa82cc0587df3b7ff191e470786b73b927a, 109e4b166a8cfbf9374c52106c68cae297c6329d, 861047160e59e4ed4fbf7d93bba5faa6ccc2f944. - Zcash Test Coverage Improvements: expanded tests for createTransaction, TrustedInput, and splitTransaction, including NU5 Sapling/Orchard scenarios. Commits 6a26549560f30bc976df2bfdbef6ba8bd154ee48 and 0627fb3193c3387cae7fa9ab38eb60cae4ca7f1b. - Zcash Nanoapp Compatibility and Library Updates: updated minimum Zcash nanoapp versions and Ledger Live dependencies to ensure compatibility, bug fixes, and improved transaction handling. Commits 5220097f79712099e00d3cfed71c4b7e919f2acc, 45c6dfbdcdb0a162b3050e0b1fb3a50767acb0af, 0f1b42e8b260d0c8dc4314f7647143a479170a1d, 6014020bf31e72bf765330b9ee997225954bb0da, d4d84c802b6824a52575bbb7e8e25acb465e402c. 2) Major bugs fixed (risk reduction): - Fixed edge-cases in Sapling/Orchard transaction processing by introducing ZCashProofsSaplingSize constant and related updates in hw-app-btc, improving reliability of deshielded/split transactions. - Increased test coverage to close gaps in NU5 Sapling/Orchard flows, reducing regression risk for live deployments. - Resolved compatibility issues between Zcash nanoapp versions and Ledger Live dependencies to ensure stable installs across user environments. 3) Overall impact and accomplishments: - Broader, more robust Zcash support in Ledger Live with end-to-end processing, improved validation, and safer upgrades via dependency/version management. - Reduced customer support risk through expanded test coverage and stable nanoapp/version synchronization. - Strengthened cross-component collaboration between hw-app-btc, app layer, and testing pipelines, enabling faster iteration on privacy-focused features. 4) Technologies/skills demonstrated: - Hardware wallet integration (hw-app-btc) with Sapling/Orchard data handling and deshielded transactions. - Test automation and NU5-era regression coverage for critical Zcash paths (createTransaction, TrustedInput, splitTransaction). - Dependency and version management for Nanoapp/Ledger Live ecosystems, including version bumps and changesets. - Strong focus on business value: secure, reliable Zcash support that improves user experience and reduces upgrade risk.

June 2025

4 Commits • 2 Features

Jun 1, 2025

June 2025 (2025-06) focused on expanding token support and strengthening the signing flow for complex transactions in Ledger Live. Key features delivered include Aptos token handling enhancements and Zcash Sapling transaction support and refinements, with targeted test updates to validate new paths. The changes broaden asset coverage, improve security in signing Sapling transactions, and demonstrate cross-chain protocol competence. These efforts improve business value by enabling more tokens and privacy-preserving transactions on Ledger Live while reducing risk through better validation and test coverage.

May 2025

2 Commits • 1 Features

May 1, 2025

Month: 2025-05 — Ledger Live: Delivered Aptos Token Operations Listing and API Integration, improving asset categorization and API coverage. This work enhances visibility and reconciliation for Aptos assets, enabling token operations to appear in Alpaca API operations. No major bugs fixed this month in the scope of Ledger Live; primary focus on delivering business value and establishing a solid technical foundation for future Aptos integrations.

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025 monthly summary: Ledger Live delivered comprehensive Aptos token support and refined asset accounting. The team completed end-to-end Aptos integration including CAL importers, separation of Aptos LegacyCoins and FungibleAssets, the ability to add/send Aptos tokens, parsing of token history, and robust handling of transaction fees and balances for Aptos assets. This work expands asset coverage, improves user experience for Aptos holders, and strengthens Ledger's position in emerging networks.

March 2025

1 Commits • 1 Features

Mar 1, 2025

March 2025 — Ledger Live: Expanded asset coverage via Aptos token integration. Implemented support for legacy coin tokens and fungible Aptos assets, added new importers and data structures to accurately represent Aptos token data within the Ledger Live ecosystem, and updated token lists and tests to accommodate the new token types. This work enhances asset visibility, accuracy, and maintainability while preserving compatibility with existing token ecosystems.

February 2025

2 Commits

Feb 1, 2025

February 2025: Stabilized staking tests and improved release observability in Ledger Live desktop. Key bug fix addressed a crash in the NEAR end-to-end test by ensuring the continue button in EarnRewardsInfoModal is identifiable via a name attribute and by updating ledger-live-desktop changesets for release notes. The work reduces flaky tests, improves UX stability, and provides traceable commits for future audits.

January 2025

5 Commits • 3 Features

Jan 1, 2025

Month: 2025-01 — LedgerHQ/ledger-live (Aptos) focused on performance, reliability, and maintainability. Delivered a caching-based optimization for Aptos gas estimation, strengthened test robustness for signing flows, and cleaned up transaction type parameters to reduce technical debt. These work items reduced user-facing latency, increased test reliability, and simplified future maintenance.

Activity

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Quality Metrics

Correctness87.6%
Maintainability87.6%
Architecture85.8%
Performance82.6%
AI Usage21.8%

Skills & Technologies

Programming Languages

BinaryJSONJavaScriptPythonShellTypeScriptYAML

Technical Skills

API DevelopmentAPI IntegrationBitcoin CoreBlockchainBlockchain IntegrationCI/CDCachingChangeset ManagementCode RefactoringConfiguration ManagementCryptocurrencyCryptocurrency WalletsData ModelingData ParsingE2E Testing

Repositories Contributed To

3 repos

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

LedgerHQ/ledger-live

Jan 2025 Jan 2026
8 Months active

Languages Used

JavaScriptTypeScriptYAMLJSONShell

Technical Skills

API IntegrationBlockchainCachingCode RefactoringFull Stack DevelopmentJavaScript

LedgerHQ/ledger-app-database

Aug 2025 Dec 2025
3 Months active

Languages Used

JSON

Technical Skills

blockchain integrationcryptocurrency developmentsoftware configuration

LedgerHQ/app-exchange

Sep 2025 Oct 2025
2 Months active

Languages Used

BinaryPython

Technical Skills

Snapshot TestingTestingUI Testing

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