SQL and Coding
Expect SQL to be central: Munich Re depends on well-modeled, queryable datasets with predictable performance. You’ll be assessed on writing robust SQL, optimizing queries, and translating complex transformations into maintainable code. Python proficiency for data manipulation, validation, and tooling is also common.
Be ready to go over:
- SQL fluency: Joins, window functions, CTEs, incremental loads, late-arriving data
- Performance tuning: Partitioning, clustering, statistics, query plans, cost trade-offs
- Python data tasks: Pandas/PySpark transformations, data validation, CLI tools
- Advanced concepts (less common): SQL anti-patterns, query rewrites, adaptive execution, vectorized UDFs
Example questions or scenarios:
- "Given denormalized policy and claims tables, write SQL to compute loss ratios by product and quarter, handling late-arriving claims."
- "Refactor this slow Snowflake query and explain the performance improvements."
- "Build a PySpark job to deduplicate and standardize broker submissions with fuzzy matching."
Data Modeling and Warehousing
Munich Re values consistent data contracts, dimensional models where appropriate, and governed semantic layers. You’ll discuss modeling choices that balance flexibility with auditability across IFRS 17, pricing, exposure, and claims domains.
Be ready to go over:
- Modeling patterns: Star/snowflake schemas, vaults, data contracts, slowly changing dimensions
- Data products: Gold/silver/bronze layers, dbt modeling, versioning strategies
- Quality and lineage: Tests (e.g., Great Expectations/dbt tests), cataloging, documentation
- Advanced concepts (less common): Surrogate key strategies, change data capture (CDC), time-travel/versioned tables
Example questions or scenarios:
- "Design a warehouse model to support IFRS 17 cashflows and cohorts with transparent lineage."
- "How would you structure a data product for cat exposure rollups with drill-down to location-level attributes?"
- "Show how you’d enforce and test a data contract across upstream APIs and downstream dashboards."
Distributed Data and Orchestration
You’ll be evaluated on building resilient, observable pipelines that scale. Expect to speak to orchestration choices, event-driven patterns, and reliable batch/stream processing.
Be ready to go over:
- Orchestration: Airflow, DAG design, retries, SLAs, backfills, idempotency
- Distributed processing: Spark tuning (partitions, shuffle), autoscaling, checkpoints
- Streaming: Kafka topics, schemas (Avro/Protobuf), exactly-once semantics, dead-letter queues
- Advanced concepts (less common): CDC into lakehouse, schema evolution strategies, replay/reconciliation
Example questions or scenarios:
- "Design a pipeline to ingest RMS/AIR outputs daily, validate exposure completeness, and publish curated tables."
- "Walk through handling a corrupted Kafka message in a streaming job with data quality guarantees."
- "How do you implement safe backfills for historical IFRS 17 transformations?"
Cloud, DevOps, and Observability
Reliability and cost transparency are core. You’ll discuss cloud services, IaC, CI/CD, secrets management, and end-to-end observability for data platforms.
Be ready to go over:
- Cloud platforms: AWS/Azure data services, Snowflake/Databricks deployment patterns
- IaC and CI/CD: Terraform, GitHub Actions/Azure DevOps, environment promotion
- Observability: Metrics, logs, lineage, data downtime detection, incident response
- Advanced concepts (less common): Cost governance (e.g., warehouse resource profiles), canary deployments, blue/green data releases
Example questions or scenarios:
- "Propose an observability plan for a critical underwriting pipeline, including SLOs and alerting."
- "Explain how you would secure secrets and rotate keys across environments."
- "Design CI/CD for dbt models with automated testing and approval gates."
Governance, Security, and Insurance Domain Context
As a regulated enterprise, Munich Re emphasizes privacy, access control, auditability, and domain correctness. You’ll be assessed on embedding governance into architecture and understanding key insurance/reinsurance data nuances.
Be ready to go over:
- Security & privacy: PII/PHI handling, encryption, row/column-level security, tokenization
- Compliance: GDPR, SOX-like controls, audit trails, approval workflows, data retention
- Domain: Policies, coverages, exposures, cat modeling outputs, claims lifecycles, IFRS 17/solvency reporting
- Advanced concepts (less common): Differential privacy trade-offs, purpose-based access, fine-grained lineage for regulatory attestations
Example questions or scenarios:
- "Design access controls for portfolio dashboards with restricted line-of-business and region visibility."
- "How would you track lineage and produce an audit report for IFRS 17 adjustments?"
- "Discuss trade-offs when anonymizing claims data for data science exploration."