Capgemini Backend Engineer Interview Questions

2500+ verified questions, indexed by team and level. Real questions submitted by candidates who completed Capgemini loops in the last 24 months.

About the Capgemini Backend Engineer hiring loop

Capgemini's signature Pseudo-Code round (25 questions / 25 minutes) is its hardest filter. Game-Based Aptitude is unique among Tier-1 consultancies. Engineering / Sogeti / Cap Invent tracks have separate rubrics. Bilingual French + English in Paris.

Backend rounds score on API design quality, database-tier reasoning, scalability anchoring, and operational maturity (observability + reliability). Trade-off articulation differentiates Senior from Mid.

Topics covered in Capgemini Backend Engineer interviews

  • 01API design (REST, GraphQL, gRPC, idempotency, versioning, pagination)
  • 02Database design (relational vs document vs wide-column, indexing, query plans)
  • 03Caching strategies (read-through, write-through, write-back, invalidation)
  • 04Concurrency + async (threads, event loops, queues, distributed locks)
  • 05Authentication + authorization (OAuth, JWT, RBAC, ABAC, session management)
  • 06Observability (logs, metrics, traces, SLOs, error budgets)

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