Backend Engineer
First seen by Alion on Aug 7, 2026.
Responsibilities (Primary) :
- Build new agent tools/actions using AWS Bedrock Agent Action Groups (Lambda-backed tools).
- Integrate existing internal/external APIs into Action Groups via OpenAPI schemas, standardize contracts (versioning, validation, error shapes).
- Design and implement forecasting input pipelines : ingestion, transformations, feature prep, aggregation, and validation.
- Implement business logic and data transformation layers with strong test coverage.
- Ensure robust error handling, retries, idempotency, and clear observability (logs/metrics/traces).
- Secure tool interfaces (IAM policies, scoped permissions, secrets management) for safe function/tool calling.
- Implement async workflows for long-running/high-throughput work (queues/events).
Essential Skills :
- Python proficiency (must-have) : production services, testing, profiling, packaging, clean architecture.
- Large dataset handling in Python : memory/performance-aware processing (vectorization, chunking/streaming; pandas/NumPy/Polars or similar).
- API development : REST and/or GraphQL, contract-first design, schema validation.
- Database design + query optimization (SQL; Postgres/Aurora/Redshift a plus).
- ETL/ELT patterns focused on correctness, validation, lineage, and maintainability.
- Strong AWS experience : Lambda, API Gateway, IAM, CloudWatch, S3 (Step Functions, EventBridge, SQS/SNS are plus).
- AWS Bedrock Agents concepts : Action Groups, orchestration, tool/function calling, secure interfaces.
- Asynchronous processing with queues (DLQs, retries, idempotency).
Skills
AWS, OpenAI, Python, REST API, ETL, API Gateway