Emil Kadiyski developed and maintained core features for the hiero-ledger/hiero-sdk-java repository, focusing on backend reliability, contract lifecycle management, and token enablement over a five-month period. He implemented robust API endpoints for contract and scheduled transaction operations, enhanced network governance with endpoint validation, and improved error handling for node account scenarios. Using Java, Kotlin, and gRPC, Emil introduced fee estimation, large transaction support, and terminology alignment to streamline developer experience. His work included CI/CD improvements, dependency upgrades, and comprehensive test automation, resulting in a more stable, scalable SDK that supports advanced Hedera integrations and safer multi-node deployments.
February 2026 — Hiero SDK Java delivered core feature work and platform readiness improvements that enhance developer experience and token capability support. No major bugs fixed this month; focus was on terminology alignment, new token-related APIs, and gRPC compatibility to enable richer client integrations and smoother downstream adoption.
February 2026 — Hiero SDK Java delivered core feature work and platform readiness improvements that enhance developer experience and token capability support. No major bugs fixed this month; focus was on terminology alignment, new token-related APIs, and gRPC compatibility to enable richer client integrations and smoother downstream adoption.
January 2026 (2026-01) focused on delivering feature-rich improvements and strengthening reliability for hiero-sdk-java. Core outcomes include enhanced fee estimation accuracy with governance testing, expanded large-transaction handling, robust error handling for node accounts, and code clarity through targeted refactors. Release activity includes the v2.66.0 milestone for fee estimation, and multiple commits across feature delivery, bug fixes, and refactors to improve scalability and maintainability.
January 2026 (2026-01) focused on delivering feature-rich improvements and strengthening reliability for hiero-sdk-java. Core outcomes include enhanced fee estimation accuracy with governance testing, expanded large-transaction handling, robust error handling for node accounts, and code clarity through targeted refactors. Release activity includes the v2.66.0 milestone for fee estimation, and multiple commits across feature delivery, bug fixes, and refactors to improve scalability and maintainability.
Monthly performance summary for 2025-11 focusing on the hiero-sdk-java repo (hiero-ledger/hiero-sdk-java). Deliverables centered on network governance, concurrency hardening, and reliability improvements. The work enhances stability, security, and developer experience, enabling safer multi-node deployments and more robust integrations.
Monthly performance summary for 2025-11 focusing on the hiero-sdk-java repo (hiero-ledger/hiero-sdk-java). Deliverables centered on network governance, concurrency hardening, and reliability improvements. The work enhances stability, security, and developer experience, enabling safer multi-node deployments and more robust integrations.
October 2025: Delivered a critical enhancement to the Hiero SDK Java by adding a Delete Endpoint for Scheduled Transactions, enabling programmatic deletion and improving lifecycle management. No major bugs fixed this period. Overall impact: reduces manual cleanup, improves reliability of scheduled-transaction handling, and accelerates developer workflows. Technologies/skills demonstrated: Java SDK development, REST API design, TCK-aligned delivery, and Git-based governance with clear commit history.
October 2025: Delivered a critical enhancement to the Hiero SDK Java by adding a Delete Endpoint for Scheduled Transactions, enabling programmatic deletion and improving lifecycle management. No major bugs fixed this period. Overall impact: reduces manual cleanup, improves reliability of scheduled-transaction handling, and accelerates developer workflows. Technologies/skills demonstrated: Java SDK development, REST API design, TCK-aligned delivery, and Git-based governance with clear commit history.
September 2025 focused on delivering reliability, automation, and contract lifecycle capabilities in hiero-sdk-java, culminating in the 2.64.0 release. Key work spanned hardening topic messaging, expanding TCK endpoints for contract lifecycle and scheduling, and stabilizing mirror node URL handling. These efforts reduce runtime errors, accelerate integration with Hedera services, and improve developer experience across testing and production environments.
September 2025 focused on delivering reliability, automation, and contract lifecycle capabilities in hiero-sdk-java, culminating in the 2.64.0 release. Key work spanned hardening topic messaging, expanding TCK endpoints for contract lifecycle and scheduling, and stabilizing mirror node URL handling. These efforts reduce runtime errors, accelerate integration with Hedera services, and improve developer experience across testing and production environments.
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