Python Backend Developer Needed for Production Event-Driven Backend

Keystone Digital

Freelance · Remote · Flexible hours

About the role

Keystone Digital is launching a unified integration layer that will connect its billing platform, CRM system, and several internal APIs. We need a Python Backend Developer who can design and implement robust services to synchronize data, handle authentication, and ensure reliable transaction flows.

Key responsibilities

• Design and build RESTful endpoints that expose billing and CRM data
• Implement secure token‑based authentication across all services
• Write efficient data transformation logic between PostgreSQL and external APIs
• Collaborate with front‑end and product teams to define integration contracts
• Set up automated testing and CI pipelines for continuous delivery

Must-have skills

• Strong Python experience with Django or Flask
• Deep understanding of REST API design principles
• Proficiency in PostgreSQL schema design and query optimization
• Familiarity with async processing and message queues

Nice to have

• Experience with Docker and container orchestration
• Knowledge of cloud services (AWS, GCP) for scaling integrations
• Background in billing or CRM system integrations