Senior C# Engineer - Agentic AI, AWS, .Net 9
- Hiring Organisation
- Smart Sourcer Limited
- Location
- City of London, London, United Kingdom
- Employment Type
- Contract
- Contract Rate
- From £800 to £900 per day
access patterns, indexing, query tuning, single-table vs multi-table trade-offs, and pragmatic thinking around consistency, scaling and cost. Proven experience designing event-driven systems with SQS and adjacent AWS messaging; idempotency, retries, ordering, DLQs and operational robustness. Strong API design sensibility ; versioning, documentation, throttling, backwards compatibility … primarily serverless on AWS Lambda , setting the technical bar for the squad and delivering major feature sets end-to-end. Build resilient, event-driven systems using SQS and related AWS messaging primitives; idempotency, retries, DLQs, ordering and clean service boundaries. Leverage Claude Code, advanced agentic workflows and native ...