Sander Bollen
Senior Software Engineer at Clockworks
The Hague, South Holland, Netherlands
Summary
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Rockstar🎓
Top SchoolSander Bollen is a Senior Software Engineer with 11 years of experience building data-driven systems and production pipelines, currently based in The Hague. He has bridged bioinformatics and software engineering—starting with genomics research and evolving into architecting data lakes, Airflow pipelines, and backend services in Python, Postgres and cloud-native AWS environments. At OKRA.ai he led migrations from AWS Glue to custom Airflow clusters, supported Spark workloads, introduced alerting and coached junior engineers, then moved into a senior engineering role at Clockworks. Comfortable across the stack, he combines DevOps expertise (Kubernetes, Terraform, CI/CD) with hands-on development in Rust, Go, Scala and frontend JavaScript/TypeScript. He’s known for turning complex scientific and geospatial requirements into pragmatic, maintainable systems and for mentoring teams to adopt containerization and best practices. His background in computational biology gives him a distinctive edge when solving data quality and pipeline robustness challenges.
11 years of coding experience
10 years of employment as a software developer
Master of Science (MSc) Cancer Genomics & Developmental Biology, Master of Science (MSc) Cancer Genomics & Developmental Biology at Utrecht UniversityPorta MosanaBachelor of Applied Science (BASc) Biomedical Sciences, Bachelor of Applied Science (BASc) Biomedical Sciences at Zuyd Hogeschool | Zuyd University of Applied Sciences
Stackoverflow
730reputation
112kreached
10answers
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Github Skills (200)
package-management10
bioconda10
shap10
conda10
bioinformatics10
bam9
githubactions9
gradient-boosting9
validation9
snakemake9
gtk9
deep-learning9
shapley9
pytest9
machine-learning9
Programming languages (11)
Github contributions (5)
LUMC/rna_cd
Jan 2019 - Jun 2019
Detect RNA contamination in human Illumina DNA-seq experiments
Contributions:1 release, 14 PRs, 66 pushes in 5 months
dnailluminacontaminationbioinformaticsdetect
sndrtj/fastq-count
Nov 2017 - May 2019
Contributions:1 release, 13 commits, 12 pushes in 1 year 5 months
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