Senior Python Engineer

What you’ll do

• Own Python services end-to-end, design, build, ship, and operate Lambdas and APIs (FastAPI) that the purchases investigation agents depend on ²⁴⁄₇.
• Reason about a fleet of services, not a single app, understand how dozens of Lambdas and services hand off work via API calls, SNS topics, SQS queues, and Kafka streams, and keep that mental map current as the system evolves.
• Master the messaging patterns, NS fan-out, SQS with DLQs and redrive, idempotency, retries, ordering guarantees, back-pressure, and the subtle differences between “event notification” and “command” flows.
• Debug across service boundaries, trace a single order or banking event from Kafka/SNS ingress through Lambda transforms, DynamoDB writes, Elasticsearch indexing, the data API, and into the webapp column an agent is looking at. You are comfortable reading CloudWatch Logs, Datadog traces, and correlating ID...