Interview question
Design idempotent Airflow DAG for daily ETL
Asked in UnitedHealth Group Nigeria Data Engineer interviews
Asked by
48% candidates
Difficulty
Hard
Round
System Design
AI synthesized from candidate reports
Related practice
Candidates also saw
UnitedHealth Group Nigeria Data Engineer — People Also Ask
Common interview prep questions from recent candidates
- Recent candidates report role-specific technical questions, system design prompts, and behavioral STAR questions tied to ownership and impact.
- Competitive — panels test depth in role fundamentals, system thinking, and communication under follow-up pressure.
- Typical loops: Resume screening → Technical → Behavioral → Offer. Timelines often run 3–6 weeks.
- When the role involves Java or backend services, Spring Boot and API design often appear in technical rounds.
- Mid-senior Data Engineer loops frequently include system design or architecture discussions — especially for distributed systems and scale.