EXCEEDS logo
Exceeds
Foivos Zakkak

PROFILE

Foivos Zakkak

Over the past year, Fotis Zakkak contributed to the quarkusio/quarkus repository by engineering robust solutions for native image builds, runtime compatibility, and developer workflow improvements. He enhanced GraalVM integration by refining reflection handling, optimizing class initialization, and implementing version-aware logic to support evolving GraalVM and Mandrel releases. Using Java and YAML, Fotis addressed cross-platform challenges, stabilized AWS Lambda and Netty integrations, and improved documentation for native image proxy configuration. His work demonstrated depth in backend development and build automation, consistently reducing production risk and maintenance overhead while enabling reliable, forward-compatible deployments across diverse cloud and CI/CD environments.

Overall Statistics

Feature vs Bugs

53%Features

Repository Contributions

49Total
Bugs
14
Commits
49
Features
16
Lines of code
1,574
Activity Months12

Work History

January 2026

1 Commits • 1 Features

Jan 1, 2026

January 2026 monthly summary for quarkusio/quarkus: Focused on API cleanliness and maintainability in GraalVM.Version. Delivered a targeted API cleanup: removed deprecated fields, deprecated additional fields, and reduced code duplication across GraalVM.Version implementations. This work aligns with the GraalVM integration roadmap and includes a follow-up to PR 51970, improving clarity and reducing future maintenance burden. No major bugs fixed this month; the effort prioritized long-term stability, safer evolution of the API, and better testability.

December 2025

1 Commits

Dec 1, 2025

December 2025: Native Image configuration forward-compatibility improvement in quarkusio/quarkus. Implemented a robust fix to prevent failures when unseen future options appear in --future-defaults, improving the reliability of native-image generation and future-proofing builds. This work enhances build stability, reduces maintenance risk as new options are introduced, and supports smoother CI workflows for native-image workflows.

October 2025

1 Commits

Oct 1, 2025

Concise monthly summary for 2025-10 focusing on Netty GraalVM native-image compatibility improvements. Delivered a GraalVM native-image reflection compatibility fix by re-enabling reflective field accesses in Netty native images and removing a legacy initialization check that blocked reflective access, enabling direct Unsafe-based field access for PlatformDependent0. This significantly improves runtime compatibility with newer GraalVM versions and reduces native-image initialization failures in deployment scenarios.

August 2025

5 Commits • 1 Features

Aug 1, 2025

August 2025 monthly summary for quarkusio/quarkus: Key features delivered, major bugs fixed, and impact on reliability and platform coverage. Highlights include robust AWS Lambda handler discovery with reflection optimization, stabilization of Oracle DB tests on AArch64 CI, and macOS SELinux labeling compatibility improvements. Together these changes reduced build times, increased CI stability, and broadened cross-OS support, delivering tangible business value and engineering efficiency.

June 2025

5 Commits

Jun 1, 2025

June 2025 monthly summary for quarkusio/quarkus: Delivered stability and compatibility fixes across native mode and cross-version environments. Focused on correcting runtime initialization, reflection handling, and version compatibility logic to reduce production risk and improve cross-version support. Results strengthen runtime reliability in production deployments and reinforce the platform's resilience.

May 2025

3 Commits • 1 Features

May 1, 2025

Month: 2025-05 monthly summary focusing on business value and technical achievements for quarkusio/quarkus. In May, we delivered measurable enhancements to native image builds and fixed a cross-version compatibility issue, improving reliability and developer productivity without sacrificing performance.

March 2025

3 Commits • 2 Features

Mar 1, 2025

March 2025 monthly summary for quarkusio/quarkus: Focused on stabilizing native image builds by delivering targeted features and corrective bug fixes to improve reliability, security, and developer productivity. Delivered JMX proxy handling in native image builds via configuration-based control, rolled back an unstable JMX substitution to restore prior behavior, and added Kafka SASL security bundle support to ensure native image builds include required security resources.

February 2025

1 Commits

Feb 1, 2025

February 2025: Stabilized Quarkus builds for GraalVM/JDK 25 by updating Substitutions.java to correctly handle the renamed SystemPropertiesSupport methods. This fix prevents build failures and preserves compatibility with newer GraalVM versions while maintaining backward compatibility.

January 2025

20 Commits • 6 Features

Jan 1, 2025

January 2025 summary for quarkusio/quarkus focused on enhancing native-image readiness, build hygiene, and Mandrel integration, delivering tangible business value through more reliable native deployments, streamlined builds, and clearer documentation. Key changes reduce runtime reflection surprises, improve startup behavior in native mode, and simplify maintenance for the Agroal/Mandrel portions of the ecosystem.

December 2024

2 Commits • 1 Features

Dec 1, 2024

December 2024: Improved developer experience for native image proxy handling through targeted documentation updates, reducing runtime errors and streamlining build-time proxy-config guidance. No major bugs fixed in this area this month.

November 2024

6 Commits • 3 Features

Nov 1, 2024

Month 2024-11 monthly summary for quarkusio/quarkus focusing on business value and technical achievements. Delivered features and stability work across Netty-based runtime, plus developer workflow improvements that accelerate collaboration and release readiness. Key features include Brotli decompression support in Netty runtime and GraalVM native-image stability improvements by skipping console-related service providers. Major bug fixes addressed runtime reflection initialization on newer JDKs and proper JsonProvider service provider registration, as well as a glob-to-regex fix for '**/*.suffix' patterns with added tests. Overall impact: improved client performance for Brotli-enabled requests, greater native-image reliability, reduced PR churn, and stronger JVM/JSON compatibility. Technologies demonstrated include Netty, Brotli, GraalVM native images, reflection, Jakarta JSON Processing, service loader patterns, and enhanced glob-to-regex testing.

February 2024

1 Commits • 1 Features

Feb 1, 2024

February 2024 — Quarkus core: Delivered GraalVM Runtime-Based Initialization to improve public API compatibility and future-proof against GraalVM changes. Replaced the deprecated rerun startup with a runtime-based approach, introducing version-aware logic to accommodate different GraalVM releases and optimizing class initialization for startup performance. This change reduces risk of breakage with GraalVM updates and enhances cross-version stability.

Activity

Loading activity data...

Quality Metrics

Correctness94.0%
Maintainability93.4%
Architecture92.0%
Performance88.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

JavaMarkdownXMLYAMLadocasciidocjava

Technical Skills

API DevelopmentAWS LambdaBackend DevelopmentBean ValidationBuild AutomationBuild SystemBuild System ConfigurationBuild SystemsBuild ToolsCI/CDCachingCloud ComputingCloud DevelopmentCompression AlgorithmsContainerization

Repositories Contributed To

2 repos

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

quarkusio/quarkus

Feb 2024 Jan 2026
11 Months active

Languages Used

JavaMarkdownasciidocjavaYAMLadocXML

Technical Skills

API DevelopmentBackend DevelopmentJavaBuild SystemCompression AlgorithmsDocumentation

netty/netty

Oct 2025 Oct 2025
1 Month active

Languages Used

Java

Technical Skills

GraalVMJavaNative ImageReflection