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Dario Cillerai

PROFILE

Dario Cillerai

Worked extensively on the envoyproxy/envoy-openssl repository, delivering enhancements to cryptography, build systems, and compatibility layers for secure network communications. Focused on improving BoringSSL and OpenSSL interoperability, the work included refactoring TLS and certificate validation, modernizing cryptographic operations, and stabilizing multi-architecture builds. Leveraged C, C++, and CMake to implement cross-platform solutions, address platform-specific issues, and streamline CI/CD pipelines. Efforts also extended to the openshift/release repository, where CI/CD automation and containerization were advanced for OpenShift Service Mesh releases. The approach emphasized maintainability, test reliability, and compliance, resulting in robust, production-ready integrations across diverse deployment environments.

Overall Statistics

Feature vs Bugs

65%Features

Repository Contributions

57Total
Bugs
8
Commits
57
Features
15
Lines of code
497,833
Activity Months11

Work History

May 2026

2 Commits • 1 Features

May 1, 2026

May 2026 monthly summary for openshift/release focused on CI/CD enhancements and test automation for Maistra/OpenShift Service Mesh. Delivered integrated test infrastructure and CI jobs to support 3.4 container builds/pushes and Proxy 1.30 testing, enabling automated validation and deployment for OSSM.

January 2026

2 Commits • 1 Features

Jan 1, 2026

January 2026 — openshift/release: CI/CD enhancements for Service Mesh 3.3 delivered. Implemented Maistra 3.3 test-infra containers build/push and added OSSM proxy 3.3 CI testing/deployment jobs to streamline testing and deployment. No major bugs fixed this month. Impact: faster feedback loops, more reliable testing, and smoother 3.3 release readiness.

September 2025

6 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary for envoyproxy/envoy-openssl focusing on reliability, compatibility, and test stability. Key features delivered include bssl-compat tooling improvements and EVP_get_digestbyname support. Major bugs fixed to improve test accuracy and header processing. The work enhances cross-OpenSSL/BoringSSL compatibility, reduces patching risk, and strengthens TLS fingerprinting and header integrity.

August 2025

5 Commits • 1 Features

Aug 1, 2025

Monthly work summary for 2025-08: Delivered key TLS/crypto modernization and build stabilization for envoyproxy/envoy-openssl, driving security improvements, interoperability, and CI reliability. Established groundwork for HTTP/3/QUIC readiness and smoother future releases.

June 2025

5 Commits • 1 Features

Jun 1, 2025

June 2025 monthly wrap-up for envoy-openssl: Delivered key cross-compatibility improvements for the BoringSSL/OpenSSL integration and stabilized multi-arch builds. Focus areas: (1) BoringSSL compatibility layer improvements with updated validation and error handling; (2) Platform-specific build fixes to ensure 64-bit compatibility on s390/s390x/zarch/ppc64le. Impact: reduced runtime errors, smoother deployments, and lower maintenance costs across environments.

May 2025

12 Commits • 2 Features

May 1, 2025

Monthly summary for 2025-05 focusing on deliverables for envoyproxy/envoy-openssl; highlights key features delivered, major bugs fixed, and overall impact. Emphasis on business value, reliability, and technical excellence.

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025 monthly summary for envoyproxy/envoy-openssl focused on readability and maintainability improvements in the BIO io_handle path. Delivered a targeted signature readability enhancement without changing behavior, aligning with upstream expectations and reducing future maintenance risk.

October 2024

6 Commits • 1 Features

Oct 1, 2024

2024-10 monthly summary for envoyproxy/envoy-openssl focused on delivering essential X509 capabilities, stabilizing builds and tests, and tightening artifact management to improve reliability and business value. Key outcomes include enabling complete X509 handling in the bSSL compatibility layer, ensuring correct Linux-specific MaxMind GeoIP artifact usage, and reducing test flakiness through test stabilization and feature gating. These changes enhance security-related TLS behavior, build determinism, and CI feedback speed, supporting reliable production deployments and accurate GeoIP provider operation.

August 2024

13 Commits • 3 Features

Aug 1, 2024

Monthly summary for 2024-08 focusing on envoyproxy/envoy-openssl, highlighting key features, bug fixes, impact, and technologies used.

June 2024

3 Commits • 1 Features

Jun 1, 2024

June 2024 monthly summary for envoyproxy/envoy-openssl: Delivered key enhancements to the Envoy Proxy build and cryptography surface, improved maintainability by refactoring SSL handling, and removed references to unimplemented SSL functions to prevent errors. These changes support broader RSA padding compatibility and cleaner maintenance, reducing risk in production deployments while enabling smoother future feature work.

April 2024

2 Commits • 1 Features

Apr 1, 2024

In 2024-04, envoyproxy/envoy-openssl focused on strengthening the Bssl compatibility layer to improve secure communications and interoperability with OpenSSL. Delivered foundational enhancements to support SSL alerts, X.509 certificates, and session cache mode retrieval. Implemented two commits to advance the compatibility layer, with an emphasis on completeness and reliability of TLS operations in the OpenSSL-backed path. No major bugs fixed this month; primary value came from feature delivery and code stabilization.

Activity

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Quality Metrics

Correctness86.0%
Maintainability85.0%
Architecture80.8%
Performance77.0%
AI Usage20.6%

Skills & Technologies

Programming Languages

BUILDBazelBzlCC++CMakePythonShellStarlarkYAML

Technical Skills

BIOBazelBoringSSLBuild SystemBuild System ConfigurationBuild SystemsBuild Systems (CMake)CC DevelopmentC ProgrammingC programmingC++C++ DevelopmentC++ developmentC/C++

Repositories Contributed To

2 repos

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

envoyproxy/envoy-openssl

Apr 2024 Sep 2025
9 Months active

Languages Used

CMakeShellC++CPythonBUILDBazelBzl

Technical Skills

CCMakeOpenSSLSSL/TLSC++ developmentCMake configuration

openshift/release

Jan 2026 May 2026
2 Months active

Languages Used

YAML

Technical Skills

CI/CDDevOpsDockerKubernetesContainerization