hiero-ledger/hiero-consensus-node
Nov 2024 – Mar 2026
17 Months active
Languages Used
JavaJavaScriptKotlinProtoGroovyGradleProtobufJSON
Technical Skills
Backend DevelopmentHedera ServicesIntegration TestingJavaTestingUnit Testing
Ivan Bankov
PROFILE
Ivan Bankov
Ivan Bankov engineered core consensus and fee systems for the hiero-ledger/hiero-consensus-node repository, focusing on reliability, scalability, and maintainability. He delivered unified fee calculation engines, atomic batch processing, and robust scheduling, using Java and Kotlin with Protocol Buffers for efficient data handling. Ivan’s technical approach emphasized test-driven development, integrating comprehensive integration and unit tests to ensure correctness and reduce production risk. His work addressed complex challenges in distributed ledger operations, such as atomicity in batched transactions and dynamic fee structures, resulting in predictable pricing, improved throughput, and streamlined error handling. The depth of his contributions strengthened system robustness and future extensibility.
Overall Statistics
Feature vs Bugs
59%Features
Repository Contributions
87Total
Bugs
16
Commits
87
Features
23
Lines of code
30,707
Activity Months17
Your Network
73 peopleWork History
March 2026
8 Commits • 1 Features
Mar 1, 2026March 2026 – hiero-consensus-node: Delivered a Hedera fee calculation overhaul with HIP-1261 simple fees, plus targeted test and CI reliability improvements. The work focused on both feature delivery and robustness to support business value and release velocity.
8 Commits • 1 Features
Mar 1, 2026March 2026 – hiero-consensus-node: Delivered a Hedera fee calculation overhaul with HIP-1261 simple fees, plus targeted test and CI reliability improvements. The work focused on both feature delivery and robustness to support business value and release velocity.
March 2026
February 2026
17 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) — Delivered Hedera Fee System Modernization and related testing for hiero-consensus-node. Implemented a new, flexible fee model supporting simple vs. legacy structures, token-specific fee handling, inner/atomic batch fee calculations, and base-fee adjustments. Built supporting test infrastructure and stability improvements to validate the new fee logic, reducing release risk and enabling faster iteration on pricing for Hedera services. The effort strengthens pricing correctness, reliability, and scalability for future service expansions.
February 2026
17 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) — Delivered Hedera Fee System Modernization and related testing for hiero-consensus-node. Implemented a new, flexible fee model supporting simple vs. legacy structures, token-specific fee handling, inner/atomic batch fee calculations, and base-fee adjustments. Built supporting test infrastructure and stability improvements to validate the new fee logic, reducing release risk and enabling faster iteration on pricing for Hedera services. The effort strengthens pricing correctness, reliability, and scalability for future service expansions.
January 2026
8 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) summary for hiero-ledger/hiero-consensus-node: Delivered cross-cutting improvements to the fee calculation system and test reliability, driving predictable pricing and CI stability. Focused efforts covered fee computation across core operations, test stability enhancements, and essential bug fixes to ensure build health and accurate fees.
8 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) summary for hiero-ledger/hiero-consensus-node: Delivered cross-cutting improvements to the fee calculation system and test reliability, driving predictable pricing and CI stability. Focused efforts covered fee computation across core operations, test stability enhancements, and essential bug fixes to ensure build health and accurate fees.
January 2026
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 — Hiero Consensus Node: Delivered a Unified Fee Calculation Engine for Airdrops and Service Queries, consolidating fee logic into a centralized, configurable module. Implemented core fee calculators for airdrop-related activities (airdrops, claims, cancellations) and for file/schedule service queries, enabling accurate, scalable pricing across token operations and service queries. The changes improve pricing transparency, reliability, and supportability, reducing manual adjustments and support overhead.
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 — Hiero Consensus Node: Delivered a Unified Fee Calculation Engine for Airdrops and Service Queries, consolidating fee logic into a centralized, configurable module. Implemented core fee calculators for airdrop-related activities (airdrops, claims, cancellations) and for file/schedule service queries, enabling accurate, scalable pricing across token operations and service queries. The changes improve pricing transparency, reliability, and supportability, reducing manual adjustments and support overhead.
November 2025
4 Commits • 2 Features
Nov 1, 2025Month 2025-11: Focused on reliability, maintainability, and scalable fee handling for hiero-consensus-node. Delivered targeted tests for account management, and established a unified fee calculation framework across Schedule Service and File Service, setting the foundation for future expansion and easier maintenance. No major bugs fixed this period; primary value came from improved robustness and clearer, test-driven delivery.
4 Commits • 2 Features
Nov 1, 2025Month 2025-11: Focused on reliability, maintainability, and scalable fee handling for hiero-consensus-node. Delivered targeted tests for account management, and established a unified fee calculation framework across Schedule Service and File Service, setting the foundation for future expansion and easier maintenance. No major bugs fixed this period; primary value came from improved robustness and clearer, test-driven delivery.
November 2025
October 2025
2 Commits
Oct 1, 2025October 2025 focused on strengthening data attribution accuracy and security controls in the hiero-consensus-node. Delivered critical bug fixes that improve data integrity and governance, reducing misattribution risks and tightening authorization on account ID updates. Resulting changes enhance trust in the ledger and downstream analytics with improved test coverage and clearer ownership of fixes.
October 2025
2 Commits
Oct 1, 2025October 2025 focused on strengthening data attribution accuracy and security controls in the hiero-consensus-node. Delivered critical bug fixes that improve data integrity and governance, reducing misattribution risks and tightening authorization on account ID updates. Resulting changes enhance trust in the ledger and downstream analytics with improved test coverage and clearer ownership of fixes.
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 focused on delivering robust Yahcli tooling enhancements and strengthening regression testing for the hiero-consensus-node project. The work improved node management and staking workflows in Yahcli, expanded test coverage for core commands, and enhanced test infrastructure for upgrade flows. These efforts reduce operational risk, accelerate validation in CI, and establish a stronger foundation for future releases while showcasing practical business value through clearer, verifiable outcomes.
3 Commits • 2 Features
Sep 1, 2025September 2025 focused on delivering robust Yahcli tooling enhancements and strengthening regression testing for the hiero-consensus-node project. The work improved node management and staking workflows in Yahcli, expanded test coverage for core commands, and enhanced test infrastructure for upgrade flows. These efforts reduce operational risk, accelerate validation in CI, and establish a stronger foundation for future releases while showcasing practical business value through clearer, verifiable outcomes.
September 2025
August 2025
2 Commits • 1 Features
Aug 1, 2025August 2025 monthly performance summary for hiero-ledger/hiero-consensus-node focusing on reliability and correctness of batched transaction processing. Delivered targeted improvements to batch workflows, emphasizing atomicity and correct nonce handling in multi-transaction scenarios. The work reduces failure modes in high-throughput batch processing and strengthens overall ledger consensus reliability.
August 2025
2 Commits • 1 Features
Aug 1, 2025August 2025 monthly performance summary for hiero-ledger/hiero-consensus-node focusing on reliability and correctness of batched transaction processing. Delivered targeted improvements to batch workflows, emphasizing atomicity and correct nonce handling in multi-transaction scenarios. The work reduces failure modes in high-throughput batch processing and strengthens overall ledger consensus reliability.
July 2025
4 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary focused on reliability and value delivery for the hiero-consensus-node. Delivered business-critical improvements around batched Ethereum operations, scheduled transaction fee controls, and test-harness robustness. Resulting in stronger correctness, clearer error propagation, and reduced operational risk in production and testing environments.
4 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary focused on reliability and value delivery for the hiero-consensus-node. Delivered business-critical improvements around batched Ethereum operations, scheduled transaction fee controls, and test-harness robustness. Resulting in stronger correctness, clearer error propagation, and reduced operational risk in production and testing environments.
July 2025
June 2025
9 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for hiero-consensus-node: Delivered critical robustness and reliability improvements across core consensus functionality. Focused on security-aligned atomic batch processing, test infrastructure stability, and streamlined error handling to reduce production risk and accelerate release cycles. Business value realized through improved throughput predictability, fewer flaky tests, and clearer error semantics for operator troubleshooting.
June 2025
9 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for hiero-consensus-node: Delivered critical robustness and reliability improvements across core consensus functionality. Focused on security-aligned atomic batch processing, test infrastructure stability, and streamlined error handling to reduce production risk and accelerate release cycles. Business value realized through improved throughput predictability, fewer flaky tests, and clearer error semantics for operator troubleshooting.
May 2025
8 Commits • 2 Features
May 1, 2025May 2025 (2025-05) highlights for hiero-consensus-node: strengthened test infrastructure with ID utilities, enabling safer shard/realm configurations and robust TopicID/AccountID handling; introduced and validated Atomic Batch Custom Fees with rollback scenarios; resolved key correctness and precheck risks by fixing inner transaction node handling, jumbo transaction ingestion timing, and auto-renewal validation guard. These changes improve reliability, test coverage, and readiness for feature rollouts across network configurations.
8 Commits • 2 Features
May 1, 2025May 2025 (2025-05) highlights for hiero-consensus-node: strengthened test infrastructure with ID utilities, enabling safer shard/realm configurations and robust TopicID/AccountID handling; introduced and validated Atomic Batch Custom Fees with rollback scenarios; resolved key correctness and precheck risks by fixing inner transaction node handling, jumbo transaction ingestion timing, and auto-renewal validation guard. These changes improve reliability, test coverage, and readiness for feature rollouts across network configurations.
May 2025
April 2025
7 Commits • 4 Features
Apr 1, 2025April 2025 achievements: Focused delivery across hiero-consensus-node to enhance reliability, throughput, and test coverage. Key results include robust token airdrop validation and error handling, jumbo transaction throttling to stabilize network load, gRPC-Web proxy endpoint support for broader client compatibility, and strengthened test infrastructure with expanded coverage. These changes reduce airdrop failures, mitigate congestion, enable smoother client integration, and accelerate QA through standardized test configurations.
April 2025
7 Commits • 4 Features
Apr 1, 2025April 2025 achievements: Focused delivery across hiero-consensus-node to enhance reliability, throughput, and test coverage. Key results include robust token airdrop validation and error handling, jumbo transaction throttling to stabilize network load, gRPC-Web proxy endpoint support for broader client compatibility, and strengthened test infrastructure with expanded coverage. These changes reduce airdrop failures, mitigate congestion, enable smoother client integration, and accelerate QA through standardized test configurations.
March 2025
2 Commits • 1 Features
Mar 1, 20252025-03 Monthly Summary – hiero-ledger/hiero-consensus-node. Focus areas: performance improvements for batched transactions and build reliability. Delivered a byte-based batched transactions representation with parsing/validation updates, enabling faster batched processing. Fixed a compile-time issue in TransactionChecker to restore build health. These changes reduce processing latency and prevent build-time regressions, contributing to system reliability and developer velocity.
2 Commits • 1 Features
Mar 1, 20252025-03 Monthly Summary – hiero-ledger/hiero-consensus-node. Focus areas: performance improvements for batched transactions and build reliability. Delivered a byte-based batched transactions representation with parsing/validation updates, enabling faster batched processing. Fixed a compile-time issue in TransactionChecker to restore build health. These changes reduce processing latency and prevent build-time regressions, contributing to system reliability and developer velocity.
March 2025
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025: Implemented granular shard/realm aware account and alias creation, config-driven shard/realm assignment for tokens/topics/schedules, and shard/realm correctness/testing improvements. These changes enable non-zero shard/realm support, dynamic configuration, and safer deployment across segmented Hedera networks, delivering clearer isolation, scalability, and stronger validation of shard/realm handling.
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025: Implemented granular shard/realm aware account and alias creation, config-driven shard/realm assignment for tokens/topics/schedules, and shard/realm correctness/testing improvements. These changes enable non-zero shard/realm support, dynamic configuration, and safer deployment across segmented Hedera networks, delivering clearer isolation, scalability, and stronger validation of shard/realm handling.
January 2025
1 Commits • 1 Features
Jan 1, 2025In January 2025, delivered a focused enhancement to the testing framework within hiero-consensus-node, introducing a Repeatable Test Execution Framework and integrating long-term schedule tests into the repeatable suite. The change reduces test flakiness, shortens feedback loops, and improves CI reliability. This aligns testing with the team's repeatable execution model and lays groundwork for scalable test coverage.
1 Commits • 1 Features
Jan 1, 2025In January 2025, delivered a focused enhancement to the testing framework within hiero-consensus-node, introducing a Repeatable Test Execution Framework and integrating long-term schedule tests into the repeatable suite. The change reduces test flakiness, shortens feedback loops, and improves CI reliability. This aligns testing with the team's repeatable execution model and lays groundwork for scalable test coverage.
January 2025
December 2024
4 Commits • 1 Features
Dec 1, 2024December 2024 highlights: Strengthened reliability of long-term scheduling in hiero-consensus-node (hiero-ledger/hiero-consensus-node) through consolidated test coverage for ScheduleCreate and ScheduleSign flows, including scenarios with and without expiry, plus tests for SYSTEM_ADMIN throttling exemptions and token-fee updates on scheduled transactions. Fixed and simplified ScheduleSign throttling by integrating with the existing throttling framework and removing direct handling from the ThrottleAccumulator. These efforts reduce scheduling-related incidents, improve validation speed, and strengthen governance controls. Demonstrated technologies/skills: test automation, test-plan-driven QA, and alignment with the project’s throttling architecture.
December 2024
4 Commits • 1 Features
Dec 1, 2024December 2024 highlights: Strengthened reliability of long-term scheduling in hiero-consensus-node (hiero-ledger/hiero-consensus-node) through consolidated test coverage for ScheduleCreate and ScheduleSign flows, including scenarios with and without expiry, plus tests for SYSTEM_ADMIN throttling exemptions and token-fee updates on scheduled transactions. Fixed and simplified ScheduleSign throttling by integrating with the existing throttling framework and removing direct handling from the ThrottleAccumulator. These efforts reduce scheduling-related incidents, improve validation speed, and strengthen governance controls. Demonstrated technologies/skills: test automation, test-plan-driven QA, and alignment with the project’s throttling architecture.
November 2024
2 Commits • 1 Features
Nov 1, 20242024-11 monthly summary for hiero-consensus-node focusing on scheduling system improvements, including iterator-based processing, cleanup, and expiration-based purging, along with expanded QA through edge-case tests for disabled long-term scheduling. These changes improve reliability, scalability, and maintainability of execution scheduling, with traceable commits.
2 Commits • 1 Features
Nov 1, 20242024-11 monthly summary for hiero-consensus-node focusing on scheduling system improvements, including iterator-based processing, cleanup, and expiration-based purging, along with expanded QA through edge-case tests for disabled long-term scheduling. These changes improve reliability, scalability, and maintainability of execution scheduling, with traceable commits.
November 2024
Activity
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Quality Metrics
Correctness89.6%
Maintainability84.8%
Architecture85.4%
Performance81.0%
AI Usage24.2%
Skills & Technologies
Programming Languages
GradleGroovyJSONJavaJavaScriptKotlinProtoProtoBufProtobufSolidity
Technical Skills
API DesignAPI DevelopmentAPI IntegrationAPI developmentAPI testingBDDBackend DevelopmentBlockchainBuild ScriptingBuild SystemCI/CDCLI DevelopmentCommand Line Interface (CLI)Command-Line Interface (CLI)Configuration Management
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