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jasuwienas

PROFILE

Jasuwienas

Worked on the hiero-json-rpc-relay repository, delivering backend features and reliability improvements for Ethereum-compatible APIs over six months. Focused on API development, cache management, and CI/CD automation, the work included modernizing caching with unified interfaces, upgrading the Koa server framework, and enhancing JSON-RPC security and error handling. Implemented robust transaction validation, automated OpenRPC spec updates, and streamlined Ethereum transaction processing using TypeScript and Node.js. Improved developer workflows by optimizing CI pipelines, refining test reliability, and automating smart contract indexers. These efforts resulted in more predictable deployments, scalable infrastructure, and clearer observability, supporting both blockchain integration and continuous delivery practices.

Overall Statistics

Feature vs Bugs

77%Features

Repository Contributions

40Total
Bugs
6
Commits
40
Features
20
Lines of code
424,915
Activity Months6

Work History

May 2026

1 Commits • 1 Features

May 1, 2026

Month: 2026-05 | Focus: CI/CD reliability and publishing process for hiero-json-rpc-relay. Key feature delivered: CI Publishing Pipeline Reliability Enhancement. The change corrects action order, enables dry-run by default, and adds verification to ensure the published package version matches the tag version, increasing reliability of the publishing process. Commit: 05dfad57b97ff9612c175acfb1f6bce6980db2c5. Result: more reliable, auditable releases and faster CI feedback with reduced risk of mis-tagged/releases.

April 2026

6 Commits • 3 Features

Apr 1, 2026

Concise monthly summary for 2026-04 focusing on repository hiero-ledger/hiero-json-rpc-relay. Highlights include delivered features, major bug fixes, impact, and technologies demonstrated. Emphasis on business value: performance improvements, streamlined dev/test workflows, and more reliable CI signals.

March 2026

12 Commits • 5 Features

Mar 1, 2026

March 2026 monthly summary for hiero-ledger/hiero-json-rpc-relay and hashgraph/hedera-smart-contracts, focusing on delivering business value through automated tooling, robust Ethereum ops, and reliable CI/CD improvements.

February 2026

6 Commits • 2 Features

Feb 1, 2026

February 2026 monthly summary for cross-repo development focusing on security, automation, and reliability. Key features delivered across two projects, major bug fixes to improve stability, and demonstrated expertise in security controls, automation, and CI/CD improvements.

January 2026

9 Commits • 5 Features

Jan 1, 2026

January 2026 focused on reliability, performance, and developer experience for hiero-json-rpc-relay. Implemented synthetic transactions, robust tracing, streamlined gas price handling, and a dedicated Ethereum RPC service, while also hardening error handling, observability, and caching. These changes reduce unnecessary balance checks, improve user feedback, and establish a scalable foundation for Ethereum RPC integrations and transaction processing.

December 2025

6 Commits • 4 Features

Dec 1, 2025

December 2025 monthly work summary focusing on delivering core reliability, security, and performance improvements for hiero-json-rpc-relay. Key changes include a Cache System Modernization with a cache factory and unified client interface, a Server Framework Upgrade to Koa 3, JSON-RPC API accessibility/security enhancements (transaction access validation, restricted CORS to GET/POST, configurable HTTP JSON-RPC responses), and Test Stabilization efforts to improve acceptance test reliability by tuning wait times and cost tolerance. These initiatives reduce operational risk, improve response consistency, and position the service for scalable growth. Technologies used include Node.js, Koa 3, and modern caching patterns; demonstrated strong collaboration, code quality, and security posture.

Activity

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Quality Metrics

Correctness90.6%
Maintainability84.4%
Architecture84.4%
Performance83.6%
AI Usage28.0%

Skills & Technologies

Programming Languages

BashJSONJavaScriptMarkdownShellTypeScriptYAML

Technical Skills

API DevelopmentAPI developmentCI/CDContinuous IntegrationDevOpsDockerDocumentationEthereumGitHub ActionsJSON SchemaJSON-RPCJavaScriptKoaKubernetesNode.js

Repositories Contributed To

2 repos

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

hiero-ledger/hiero-json-rpc-relay

Dec 2025 May 2026
6 Months active

Languages Used

JSONJavaScriptTypeScriptYAMLBashMarkdown

Technical Skills

API DevelopmentAPI developmentKoaNode.jsTestingTypeScript

hashgraph/hedera-smart-contracts

Feb 2026 Mar 2026
2 Months active

Languages Used

YAMLJavaScriptShellTypeScript

Technical Skills

CI/CDContinuous IntegrationDevOpsGitHub ActionsWorkflow AutomationNode.js