Technical interview guide

Bioinformatics Pipelines & Reproducibility

How multi-tool genomics analyses are made repeatable and portable — workflow managers, containerization, and the reproducibility practices the field has had to learn the hard way.

Read: 50 min
Practice MCQs: 25
Interview QA: 25
Edition: v3
Editorial status: Reviewed
Relevant for: Computational Biologist

Scope: Nextflow 25.x; Snakemake 9.26; CWL 1.2.1; WDL 1.2; OCI image specification; current nf-core, RO-Crate 1.1, FAIR and GA4GH WES guidance reviewed 2026-09-04.

Interview QA

Treat each question like a live interview question: answer out loud first (structure, assumptions, tradeoffs), then open the model answer to spot gaps and rehearse a tighter follow-up.

Curated: 2026-10-05 · Written: 2026-09-10 · Reviewed: 2026-10-04

QA-1

Design and defend a workflow mechanism for workflow graph.

QA-2

Design and defend a workflow mechanism for task idempotence.

QA-3

Design and defend a workflow mechanism for output contracts.

QA-4

Design and defend a workflow mechanism for metadata schemas.

QA-5

Design and defend a workflow mechanism for configuration.

QA-6

Design and defend a workflow mechanism for immutable references.

QA-7

Design and defend a workflow mechanism for checksums.

QA-8

Design and defend a workflow mechanism for container pinning.

QA-9

Design and defend a workflow mechanism for environment locking.

QA-10

Design and defend a workflow mechanism for executor portability.

QA-11

Design and defend a workflow mechanism for resource declarations.

QA-12

Design and defend a workflow mechanism for scatter gather.

QA-13

Design and defend a workflow mechanism for determinism.

QA-14

Design and defend a workflow mechanism for random seeds.

QA-15

Design and defend a workflow mechanism for cache keys.

QA-16

Design and defend a workflow mechanism for failure classification.

QA-17

Design and defend a workflow mechanism for dynamic workflows.

QA-18

Design and defend a workflow mechanism for provenance.

QA-19

Design and defend a workflow mechanism for observability.

QA-20

Design and defend a workflow mechanism for workflow testing.

QA-21

Design and defend a workflow mechanism for continuous integration.

QA-22

Design and defend a workflow mechanism for reference-data lifecycle.

QA-23

Design and defend a workflow mechanism for privacy and isolation.

QA-24

Design and defend a workflow mechanism for FAIR packaging.

QA-25