hiero-ledger/hiero-consensus-node
Sep 2025 – Mar 2026
7 Months active
Languages Used
KotlinprotobufJavaJSONProtoBuf
Technical Skills
Build System ConfigurationDependency ManagementProtocol BuffersAPI DevelopmentBackend DevelopmentError Handling
Artem Derevets
PROFILE
Artem Derevets
Artem Derevets contributed to the hiero-ledger/hiero-consensus-node repository by engineering core backend features and fee management systems over seven months. He standardized Protocol Buffers integration, refactored fee calculation architecture, and enhanced Hedera service reliability through modular Java and Kotlin code. Artem implemented congestion-aware pricing, selective fee exemptions, and robust validation for transaction throttling and crypto operations, addressing edge cases and reducing misbilling risk. His work included artifact-based dependency management, modular testing frameworks, and real-time EVM opcode tracing. By expanding test coverage and improving maintainability, Artem delivered scalable, production-ready solutions that strengthened system reliability and supported future blockchain feature development.
Overall Statistics
Feature vs Bugs
77%Features
Repository Contributions
37Total
Bugs
3
Commits
37
Features
10
Lines of code
25,434
Activity Months7
Your Network
73 peopleWork History
March 2026
5 Commits • 1 Features
Mar 1, 2026March 2026: Focused on delivering business-value features and hardening the codebase in the hiero-consensus-node repository. Delivered flexible fee-exemption capability and completed substantial reliability improvements to tests and block validation, resulting in more predictable behavior, reduced risk of fee miscalculations, and stronger groundwork for upcoming feature work.
5 Commits • 1 Features
Mar 1, 2026March 2026: Focused on delivering business-value features and hardening the codebase in the hiero-consensus-node repository. Delivered flexible fee-exemption capability and completed substantial reliability improvements to tests and block validation, resulting in more predictable behavior, reduced risk of fee miscalculations, and stronger groundwork for upcoming feature work.
March 2026
February 2026
15 Commits • 3 Features
Feb 1, 2026February 2026 highlights for hiero-consensus-node: Delivered core fee-management enhancements, enhanced modularity, expanded test coverage, and a regression fix. The work improves fee predictability, upgradeability, and deployment safety while strengthening test reliability and code maintainability.
February 2026
15 Commits • 3 Features
Feb 1, 2026February 2026 highlights for hiero-consensus-node: Delivered core fee-management enhancements, enhanced modularity, expanded test coverage, and a regression fix. The work improves fee predictability, upgradeability, and deployment safety while strengthening test reliability and code maintainability.
January 2026
5 Commits • 2 Features
Jan 1, 2026January 2026 (2026-01) monthly summary for hiero-ledger/hiero-consensus-node focusing on delivering observable improvements, modular pricing, and robust testing to drive business value and deployment readiness.
5 Commits • 2 Features
Jan 1, 2026January 2026 (2026-01) monthly summary for hiero-ledger/hiero-consensus-node focusing on delivering observable improvements, modular pricing, and robust testing to drive business value and deployment readiness.
January 2026
December 2025
6 Commits • 1 Features
Dec 1, 2025Monthly summary for 2025-12 focusing on delivering robust Hedera Crypto Fee handling and validation within hiero-consensus-node. Delivered Hedera Crypto Fee Structure Enhancements and Validation across CryptoTransfer, CryptoGetInfo, and CryptoGetAccountRecords. Introduced simple fee calculators, strengthened fee validation, and prevented double charging. Refactored tests to verify fee calculations across scenarios, increasing coverage for edge cases. Overall, this work improves pricing accuracy, reduces misbilling risk, and stabilizes fee-related behavior for production deployments.
December 2025
6 Commits • 1 Features
Dec 1, 2025Monthly summary for 2025-12 focusing on delivering robust Hedera Crypto Fee handling and validation within hiero-consensus-node. Delivered Hedera Crypto Fee Structure Enhancements and Validation across CryptoTransfer, CryptoGetInfo, and CryptoGetAccountRecords. Introduced simple fee calculators, strengthened fee validation, and prevented double charging. Refactored tests to verify fee calculations across scenarios, increasing coverage for edge cases. Overall, this work improves pricing accuracy, reduces misbilling risk, and stabilizes fee-related behavior for production deployments.
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025: Delivered a comprehensive Fee Calculation System Overhaul in hiero-consensus-node. Implemented a Crypto Update simple fees calculator, introduced hooks and key updates, and refactored architecture by replacing CalculatorState with FeeContext. Fixed issues in the simple fees test suite and updated tests to ensure accurate fee calculations across all transaction types. The work enhances fee accuracy, consistency, and maintainability, laying a scalable foundation for future fee-related features.
3 Commits • 1 Features
Nov 1, 2025November 2025: Delivered a comprehensive Fee Calculation System Overhaul in hiero-consensus-node. Implemented a Crypto Update simple fees calculator, introduced hooks and key updates, and refactored architecture by replacing CalculatorState with FeeContext. Fixed issues in the simple fees test suite and updated tests to ensure accurate fee calculations across all transaction types. The work enhances fee accuracy, consistency, and maintainability, laying a scalable foundation for future fee-related features.
November 2025
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused on hardening the Hedera consensus node throttle path and closing a validation gap to improve reliability and throughput under load. Key contributions include throttle validation enhancements, a new ThrottleResult abstraction, and targeted tests for ScheduleCreate and TokenMint, which together reduce risk of unintended throttling and improve maintainability.
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused on hardening the Hedera consensus node throttle path and closing a validation gap to improve reliability and throughput under load. Key contributions include throttle validation enhancements, a new ThrottleResult abstraction, and targeted tests for ScheduleCreate and TokenMint, which together reduce risk of unintended throttling and improve maintainability.
September 2025
1 Commits • 1 Features
Sep 1, 2025In September 2025, the team delivered a key architectural improvement in the hiero-consensus-node by standardizing protobuf sources, laying groundwork for easier maintenance and more reliable cross-node communication.
1 Commits • 1 Features
Sep 1, 2025In September 2025, the team delivered a key architectural improvement in the hiero-consensus-node by standardizing protobuf sources, laying groundwork for easier maintenance and more reliable cross-node communication.
September 2025
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Quality Metrics
Correctness94.8%
Maintainability84.6%
Architecture90.6%
Performance84.4%
AI Usage25.4%
Skills & Technologies
Programming Languages
JSONJavaKotlinProtoBufprotobuf
Technical Skills
API DevelopmentAPI designAPI developmentAPI testingBackend DevelopmentBuild System ConfigurationDependency ManagementError HandlingHedera servicesInterface DesignJavaProtocol BuffersSoftware ArchitectureSystem DesignTesting
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