July 2025: Delivered targeted CI enhancements for nf-core/methylseq focused on AWS Megatests and AWS test organization, enabling robust ARM/GPU testing, secure configuration via organization variables, early input validation, and scalable resource management via S3 paths. These improvements improve reliability, reduce debugging cycles, and accelerate feedback on methylation-seq workflows.

December 2024 – nf-core/sarek: Focused on strengthening test infrastructure to improve reliability and maintainability of the pipeline. Implemented Pipeline Testing Stubs and Test Scaffolding to enable isolated unit tests for pipeline modules, including CREATE_INTERVALS_BED and GATK4_INTERVALLISTTOBED, plus a stub for gatk4-intervallisttobed and a new test file for the Sentieon pipeline to validate workflow completion and output integrity. These changes reduce test flakiness, enable mock workflows and output checks without executing real tools, and lay the groundwork for faster, safer CI feedback. This work complements ongoing module improvements and supports safer future changes.