Python Backend Developer – Production API Design

CoreData Systems

Contract · Remote · Flexible hours

About the role

CoreData Systems is building a unified integration layer called "PulseBridge" to connect its billing platform, CRM, and several internal APIs. As a Python Backend Developer you will design and implement the core services that synchronize data, enforce business rules, and expose stable endpoints for downstream consumers.

Key responsibilities

• Design and develop the PulseBridge microservice using FastAPI and async PostgreSQL queries.
• Create secure REST endpoints for billing‑CRM data exchange, handling up to 10,000 requests per minute.
• Implement Docker‑based CI pipelines in GitHub Actions, ensuring reproducible builds and automated testing.
• Write unit and integration tests with PyTest, targeting 85% coverage before each sprint.
• Collaborate with the front‑end team to define OpenAPI contracts and versioning strategy.
• Monitor service health in Grafana, set up alerts for latency spikes, and perform root‑cause analysis.

Must-have skills

• Strong Python (3.9+) experience, especially with FastAPI or Flask.
• Proficient in PostgreSQL schema design and query optimization.
• Hands‑on with Docker containerization and orchestration.
• Building and consuming RESTful APIs, including authentication (OAuth2/JWT).
• Familiarity with CI/CD tools such as GitHub Actions or Jenkins.

Nice to have

• Experience with message brokers like RabbitMQ or Kafka.
• Knowledge of cloud platforms (AWS or GCP) for deployment.