PythonDeveloper-Gainwell

Summary & Impact

Were looking for a Python Software Engineer who will design build and operate scalable secure servicesmany running as AWS Lambda functionsto power critical datadriven products. Youll own features endtoend from technical design and coding standards through automated testing observability and cost/performance optimization. Your work will directly improve reliability for customers accelerate delivery for partner teams and uphold strong privacy and compliance practices in sensitive data environments (including U.S. Healthcare use cases).

Key Responsibilities

Design & implement productiongrade Python services and AWS Lambda functions integrating with API Gateway S3 DynamoDB SQS/SNS and Step Functions.

Write clean testable code with unit/integration tests (pytest) type hints (mypy/PEP 484) and CI/CD pipelines (e.g. GitHub Actions AWS CodePipeline).

Model and query data efficiently across relational and NoSQL stores; optimize schemas queries and access patterns for scale and cost.

Secure by design: apply least privilege (IAM) secrets management input validation and threataware coding; partner with Security on risks and remediation.

Collaborate crossfunctionally with product data QA and DevOps to clarify requirements break down work and deliver iteratively.

Required Qualifications

Experience

35 years professional software engineering with Python in production including ownership of deployed services.

Core Python & Engineering

Data structures & algorithms; OOP & composition; iterators/generators; decorators & context managers; error handling.

Concurrency models (asyncio threading multiprocessing) and when to use each.

Packaging & environments (pip/poetry virtualenv) dependency management semantic versioning and reproducible builds.

Type checking (mypy/pyright) linting/formatting (ruff/flake8/black) and profiling (cProfile py-spy).

Test strategy with pytest fixtures parameterization coverage and mocking.

AWS & Serverless

Handson building and running AWS Lambda with Python; eventdriven integrations (API Gateway SQS/SNS EventBridge Step Functions)

Security & Data Protection

Secure coding identity & access management (IAM) secrets handling (e.g. AWS Secrets Manager).

Privacyaware development in environments that may process PHI/PII (e.g. HIPAAaligned practices).

Education / Certifications

Bachelors degree in CS/Engineering or equivalent experience.

Required (or commitment to obtain within 6 months): AWS Certified Developer Associate or AWS Certified Solutions Architect Associate.

Strong Python Programming Concepts

Idiomatic Python (PEP 8) readability and maintainability.

Efficient I/O and network programming with asyncio backpressure retries and exponential backoff.

Data handling with pandas/polars serialization (JSON/MsgPack/Parquet) and schema validation (pydantic).

Performance tuning: algorithmic complexity memory usage GIL considerations coldstart mitigation for Lambdas.

Robust testing: propertybased tests (hypothesis) and contract tests for APIs/events.

Defensive programming: input validation graceful degradation and circuitbreaker/timeouts for dependencies.

Preferred Qualifications

Domain expertise in U.S. Healthcare: familiarity with HL7 v2 FHIR R4 X12 EDI (270/) payer/provider workflows claims adjudication and common interoperability tools (e.g. Mirth Connect).

Experience with eventdriven and streaming patterns; caching (Redis) and API design (REST/GraphQL).

Agile delivery experience; comfort with story slicing estimation and incremental releases.