Worked on the nf-core/sarek repository to deliver a targeted performance optimization for the GATK GenomicsDBImport process within Whole Exome Sequencing workflows. Introduced a conditional --merge-input-intervals option, implemented in Groovy and leveraging Nextflow, to address bottlenecks caused by large interval target files. This feature reduces the creation of excessive intermediate files and shortens processing times, improving scalability for genomics analyses. The option activates only when the --wes pipeline parameter is used, ensuring backward compatibility. No major bugs were addressed during this period, with efforts focused on feature enhancement, workflow stability, and alignment with nf-core quality standards in bioinformatics.