Maciej Malik focused on enhancing Hedera swap reliability and flexibility within the LedgerHQ/ledger-live repository, delivering a new transaction handling strategy for Hedera swaps. He implemented support for custom fees and additional parameters, enabling more robust and cost-aware swap flows. Using TypeScript and leveraging his blockchain and full stack development skills, Maciej introduced targeted changes to ensure correct transaction handling across edge cases. His work reduced transaction friction and established a foundation for advanced fee models and parameterized routing. The depth of his contribution is reflected in the careful handling of transaction logic, improving user experience and future extensibility for Hedera swaps.