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Cian Hatton

PROFILE

Cian Hatton

Over seven months, Qpeyb engineered robust backend and DevOps solutions across the celestiaorg/celestia-app, celestiaorg/celestia-node, and rollkit/rollkit repositories, focusing on modular service deployment, cross-chain interoperability, and automated testing. He introduced standalone gRPC server modes, Docker-based end-to-end testing frameworks, and CI/CD optimizations using Go, Docker, and Makefile. His work included refactoring test infrastructure for reliability, enabling flexible upgrade paths, and integrating IBC/ICA cross-chain tests to validate token transfers and migrations. By modernizing build pipelines and stabilizing multi-node deployments, Qpeyb improved release safety and developer velocity, demonstrating depth in system integration, blockchain development, and workflow automation.

Overall Statistics

Feature vs Bugs

83%Features

Repository Contributions

48Total
Bugs
5
Commits
48
Features
25
Lines of code
27,632
Activity Months7

Your Network

141 people

Work History

October 2025

7 Commits • 5 Features

Oct 1, 2025

October 2025 highlights: Delivered core migration, testing, and upgrade readiness across multiple repos, with a focus on safer multi-node migrations, stronger interop, and robust upgrade validation. Key outcomes include migration framework enhancements, improved P2P testing, cross-chain transfer enablement, modernized testing infrastructure with Tastora, and end-to-end EVM upgrade integrity tests. These changes reduce rollout risk, increase chain stability, and expand interoperability for cross-chain use cases.

September 2025

6 Commits • 5 Features

Sep 1, 2025

Monthly summary for 2025-09: Stabilized deployment surface, modernized tests, and aligned dependencies across rollkit/rollkit, rollkit/go-execution-abci, and celestiaorg/celestia-app to improve reliability, performance, and developer velocity. Key outcomes include the rollout of node readiness gating, major Tastora upgrades, testing infra modernization with Tastora Reth, and DA-layer testing enhancements, along with routine dependency maintenance to keep the stack secure and compatible.

August 2025

6 Commits • 2 Features

Aug 1, 2025

Month: 2025-08 was focused on strengthening end-to-end testing coverage for cross-chain interoperability and stabilizing test infrastructure to enable safer and faster releases. Delivered an End-to-End IBC/ICA Testing Framework in celestia-app with CI/Makefile support, expanded coverage for cross-chain token transfers, upgrades, and Hermes relayer setup. Stabilized test infrastructure and CI workflows by fixing variable naming, timeouts, entrypoint alignment, and a tastora dependency issue, improving nightly test reliability. In rollkit, updated End-to-end Docker tests to reflect Celestia app API changes, pinned dependencies, upgraded Celestia-app to v5, and standardized environments by renaming rollkit to ev-node to ensure consistent interfacing. Overall, these contributions reduce integration risk, shorten feedback loops, and strengthen cross-chain verification.

July 2025

7 Commits • 4 Features

Jul 1, 2025

July 2025 performance highlights across Celestia’s core repos, focusing on CI reliability, end-to-end testing, and cross-chain interoperability. The work accelerates safe releases, improves test coverage, and demonstrates strong cross-team collaboration across Go, Docker-based testing, and modular test builder patterns.

June 2025

6 Commits • 3 Features

Jun 1, 2025

June 2025 performance summary focused on delivering robust CI/CD improvements, expansive Docker-based testing, and critical bug fixes across Rollkit and Celestia App. The work increased release reliability, expanded testing coverage, and strengthened test-data integrity, enabling faster, safer deployments and more dependable full-node interactions.

May 2025

9 Commits • 3 Features

May 1, 2025

May 2025 monthly summary for Celestia repositories (celestia-app and celestia-node).

April 2025

7 Commits • 3 Features

Apr 1, 2025

April 2025 — celestia-app monthly performance summary. Focused on delivering deployment readiness features, strengthening upgrade reliability, and improving testing infrastructure, while fixing critical integration gaps to enable broader API/gRPC interoperability and block queries. Key features delivered: - Standalone gRPC server mode enabling multiplexer readiness: Introduced standalone gRPC server capability and refactored startStandAlone to manage API and gRPC servers independently, enabling flexible deployment of Celestia services. Commits: cb68ab9a1485833b0bbe7bb730a75eafb5fd2df3. - Multiplexer build and test infrastructure improvements: Improved build/test pipeline with correct OS/arch args for end-to-end upgrades, switched to published multiplexer version, and streamlined builds by removing embedded test binaries. Commits: 3500e274b319805bbe001dd2dc4876a93401c77e; 77cbba394b3fc11eb7b6dc8110524578e7065e74; f576ca1a0ae7ef905cbee210d41065a6b83417e6. - End-to-end upgrade testing enhancements: Added end-to-end upgrade test (v3 to v4) with Knuu; refactored test infra, JSON utilities, and ensured robust image overrides and genesis handling, plus improving E2E reliability. Commits: 7c4daff7f3609dbe609c2a1f7e04c147a806f02a; 04ad2e9eb690c96269118e4ddd7ade6f6ddffe23. Major bugs fixed: - Tendermint service registration bug fix: Register Tendermint service so that API/gRPC enabled setups support querying blocks via celestia-appd q block. Commit: d433a4cb178e11814ed2cb287e10a08cc897404d. Overall impact and accomplishments: - Enabled flexible deployment options and improved service readiness with standalone gRPC, aligning with customer needs for modular Celestia service deployment. - Strengthened upgrade readiness through robust end-to-end upgrade testing (v3→v4) and improved test infrastructure, reducing upgrade risk and time-to-value. - Optimized the build/test pipeline, reducing CI time and complexity by using published multiplexer versions and removing embedded test artifacts. Technologies/skills demonstrated: - Go-based service architecture, gRPC, and multi-service orchestration. - End-to-end testing frameworks, test infra modernization, and JSON utilities. - Image override handling and genesis setup for upgrade scenarios.

Activity

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Quality Metrics

Correctness87.0%
Maintainability83.0%
Architecture83.6%
Performance74.4%
AI Usage24.2%

Skills & Technologies

Programming Languages

DockerfileGoMakefileShellYAML

Technical Skills

API DevelopmentAPI IntegrationBackend DevelopmentBlockchainBlockchain DevelopmentBuild AutomationBuild Process OptimizationBuild SystemsBuilder PatternCI/CDCI/CD ConfigurationCelestiaCelestia NetworkCode CleanupCode Refactoring

Repositories Contributed To

4 repos

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

celestiaorg/celestia-app

Apr 2025 Oct 2025
7 Months active

Languages Used

DockerfileGoMakefileShellYAML

Technical Skills

API DevelopmentBackend DevelopmentBuild Process OptimizationBuild SystemsCI/CDCode Cleanup

rollkit/rollkit

Jun 2025 Oct 2025
4 Months active

Languages Used

DockerfileGoMakefileYAML

Technical Skills

BlockchainCI/CDDockerEnd-to-End TestingGitHub ActionsGo Development

rollkit/go-execution-abci

Jul 2025 Oct 2025
3 Months active

Languages Used

GoYAMLDockerfileShell

Technical Skills

CI/CDCelestiaCosmos SDKDockerEnd-to-End TestingIntegration Testing

celestiaorg/celestia-node

May 2025 Oct 2025
3 Months active

Languages Used

GoShell

Technical Skills

API IntegrationCode RefactoringDependency ManagementGo ModulesDockerEnd-to-End Testing