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Tatiana Gelaf Romer

PROFILE

Tatiana Gelaf Romer

Worked on the nf-core/modules and nf-core/tools repositories, focusing on bioinformatics pipeline reliability and standards alignment. Delivered features such as adopting R1/R2 naming conventions for FASTP outputs and upgrading Cell Ranger modules, while addressing bugs like FASTQC input basename collisions and Cellranger mkfastq output handling. Used Nextflow, Python, and Docker to implement robust data processing, containerization, and workflow management solutions. Enhanced test coverage and CI reliability by updating snapshots and adding comprehensive test cases, particularly for specialized genomic data. Collaborated across teams to ensure reproducibility, data integrity, and compatibility, reducing downstream failures and improving the stability of bioinformatics workflows.

Overall Statistics

Feature vs Bugs

33%Features

Repository Contributions

6Total
Bugs
4
Commits
6
Features
2
Lines of code
1,159
Activity Months5

Work History

March 2026

1 Commits

Mar 1, 2026

March 2026 nf-core/modules monthly summary: delivered a targeted bug fix to prevent basename collisions in FASTQC input processing by staging input files, improving data integrity and pipeline reliability. The change reduces cross-file interference and ensures correct processing of FASTQC inputs across workflows.

January 2026

1 Commits

Jan 1, 2026

January 2026: nf-core/modules focused on stabilizing the CellRanger Multi workflow and strengthening test coverage for robustness across datasets. Key fixes and tests delivered to reduce production risk and improve data processing reliability.

December 2025

1 Commits • 1 Features

Dec 1, 2025

December 2025 monthly summary for nf-core/modules focused on delivering consistent, standards-aligned outputs and reinforcing test coverage to protect downstream analyses. The primary feature delivered was adopting R1/R2 naming conventions for FASTP module outputs, aligning with common paired-end data practices and improving data provenance across pipelines. This change reduces confusion in downstream processing and simplifies data cataloging.

November 2025

2 Commits • 1 Features

Nov 1, 2025

Concise monthly summary for Nov 2025 covering nf-core/tools and nf-core/modules work, focusing on business value, reliability, and technical accomplishments.

October 2025

1 Commits

Oct 1, 2025

October 2025 monthly summary for nf-core/modules: delivered a critical bug fix in the downstream processing path for Cellranger mkfastq by splitting index and primary FASTQ files and emitting them via explicit output channels. Updated tests and metadata to reflect the new outputs, ensuring compatibility with downstream modules and improving reliability of downstream pipelines. This work reduces downstream failures and improves data integrity for sequencing runs.

Activity

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Quality Metrics

Correctness93.4%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage23.4%

Skills & Technologies

Programming Languages

DockerfileGroovyNextflowPythonYAML

Technical Skills

BioinformaticsDevOpsDockerGitNextflowPipeline DevelopmentPythonbioinformaticscontainerizationdata processingnextflowtestingworkflow management

Repositories Contributed To

2 repos

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

nf-core/modules

Oct 2025 Mar 2026
5 Months active

Languages Used

GroovyYAMLDockerfileNextflow

Technical Skills

BioinformaticsNextflowPipeline DevelopmentDockerbioinformaticscontainerization

nf-core/tools

Nov 2025 Nov 2025
1 Month active

Languages Used

Python

Technical Skills

DevOpsGitPython