
Worked on the AztecProtocol/aztec-packages repository to modernize CI infrastructure and enhance fuzz testing workflows. Led the migration of CI systems to AWS SSM, unifying EC2 and SSM bootstrapping into a single, parameterized workflow for improved reliability and observability. Developed automated fuzzer manifest generation using CMake and Python scripting, attaching signed manifests to container images for traceability. Upgraded fuzzing infrastructure for ContFuzzer v2 compatibility, introducing per-target resource management and improved artifact organization. Strengthened CI security by implementing label gating and membership verification in GitHub Actions, ensuring only authorized users can trigger sensitive workflows and improving overall pipeline safety.
April 2026 monthly summary for AztecProtocol/aztec-packages: Delivered significant enhancements to fuzzing infrastructure and CI security, with clear business value: faster, safer fuzzing and more robust CI gating. Key technical achievements include ContFuzzer v2 compatibility, per-target resource management, manifest generation, and CI label gating for ci-external.
April 2026 monthly summary for AztecProtocol/aztec-packages: Delivered significant enhancements to fuzzing infrastructure and CI security, with clear business value: faster, safer fuzzing and more robust CI gating. Key technical achievements include ContFuzzer v2 compatibility, per-target resource management, manifest generation, and CI label gating for ci-external.
Month: 2026-03 — Aztec Protocol: aztec-packages Key features delivered: - CI infrastructure migration to AWS SSM with SSH fallback and a unified, parameterized bootstrap workflow, consolidating EC2/SSM bootstrap. Outcome: more reliable CI runs, improved logging, and better operational hygiene; defaults for CI3_SECURITY_GROUP_ID and CI3_INSTANCE_PROFILE_NAME baked in and overridable via environment variables. - Fuzzing tooling manifest generation and private container builds: auto-generated fuzzer manifests from CMake build metadata; per-preset fuzzer_manifest.json files merged into a unified manifest attached to the container image as an OCI artifact via oras; private fuzzer container builds enabled with cosign signing and OCI attribution for security and traceability. Major bugs fixed: - SSM CI jobs showing inactive on dashboard; resolved by aligning log capture with cache_log and fixing CI_DASHBOARD checks, reducing false-positives on CI status. - Restore SSH key for Redis tunnel in SSM mode to ensure logs can be written and Redis denoise can attach logs without error. - Prevent Redis/CI collisions: add random suffix to CI_LOG_ID to avoid score collisions in Redis sorted sets. - Sanitize GitHub actor tags for AWS tagging: strip square brackets to produce valid EC2 tag values. - Align timeouts and shutdown handling: adjust OIDC role duration, SSM poll timeout, and execution timeout to match shutdown window, preventing premature terminations. - Cancel in-flight SSM commands on signals; bail early if instances are terminated or unknown to avoid orphaned commands. - Refactor bootstrap_ec2 and bootstrap_ssm into a single, parameterized script to simplify maintenance and reduce drift. - Reduce noisy CI log output from SSM/bootstrap and related tooling to improve signal-to-noise in logs. Overall impact and accomplishments: - Significantly improved CI reliability, observability, and security posture for fuzzing and build pipelines. The AWS-based CI migration delivers faster, more predictable feedback loops, better dashboard accuracy, and streamlined operations. Fuzzing manifests and signed, OCI-attributed artifacts improve test coverage governance and supply-chain security. Technologies/skills demonstrated: - AWS SSM/EC2 orchestration, Bash scripting, and log handling strategies - CI/CD hygiene, timeout management, and signal handling in long-running jobs - CMake-driven fuzzing manifest generation, ORAS-based artifact attachment, and Cosign signing for container provenance - Secure container build workflows and OCI attribution
Month: 2026-03 — Aztec Protocol: aztec-packages Key features delivered: - CI infrastructure migration to AWS SSM with SSH fallback and a unified, parameterized bootstrap workflow, consolidating EC2/SSM bootstrap. Outcome: more reliable CI runs, improved logging, and better operational hygiene; defaults for CI3_SECURITY_GROUP_ID and CI3_INSTANCE_PROFILE_NAME baked in and overridable via environment variables. - Fuzzing tooling manifest generation and private container builds: auto-generated fuzzer manifests from CMake build metadata; per-preset fuzzer_manifest.json files merged into a unified manifest attached to the container image as an OCI artifact via oras; private fuzzer container builds enabled with cosign signing and OCI attribution for security and traceability. Major bugs fixed: - SSM CI jobs showing inactive on dashboard; resolved by aligning log capture with cache_log and fixing CI_DASHBOARD checks, reducing false-positives on CI status. - Restore SSH key for Redis tunnel in SSM mode to ensure logs can be written and Redis denoise can attach logs without error. - Prevent Redis/CI collisions: add random suffix to CI_LOG_ID to avoid score collisions in Redis sorted sets. - Sanitize GitHub actor tags for AWS tagging: strip square brackets to produce valid EC2 tag values. - Align timeouts and shutdown handling: adjust OIDC role duration, SSM poll timeout, and execution timeout to match shutdown window, preventing premature terminations. - Cancel in-flight SSM commands on signals; bail early if instances are terminated or unknown to avoid orphaned commands. - Refactor bootstrap_ec2 and bootstrap_ssm into a single, parameterized script to simplify maintenance and reduce drift. - Reduce noisy CI log output from SSM/bootstrap and related tooling to improve signal-to-noise in logs. Overall impact and accomplishments: - Significantly improved CI reliability, observability, and security posture for fuzzing and build pipelines. The AWS-based CI migration delivers faster, more predictable feedback loops, better dashboard accuracy, and streamlined operations. Fuzzing manifests and signed, OCI-attributed artifacts improve test coverage governance and supply-chain security. Technologies/skills demonstrated: - AWS SSM/EC2 orchestration, Bash scripting, and log handling strategies - CI/CD hygiene, timeout management, and signal handling in long-running jobs - CMake-driven fuzzing manifest generation, ORAS-based artifact attachment, and Cosign signing for container provenance - Secure container build workflows and OCI attribution

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