Senior : Python Backend Developer

Senior : Python Backend Developer

• Location: Oniste : Seattle, WA
• Position Type: Full Time
• Experience Required: 4+ Years
• Must have Skill : Python- backend development , FastAPI , React ,MongoDB , Data Engineering

We are looking for a skilled Senior : Python backend Developer who is comfortable working across the backend, frontend, and data transformation layers. The ideal candidate is someone with strong hands-on experience in building scalable web applications and a solid understanding of data engineering principles.

Key Responsibilities:

• Design and develop robust backend services us ing Python (FastAPI)
• Build responsive and intuitive user interface s using React
• Integrate with MongoDB for data persistence and efficient querying
• Translate source-to-target mappings into performant data transformation logic
• Collaborate with cross-functional teams to define and implement scalable application architectures
• Write clean, maintainable code and participate in code reviews

Must-Have Skills:

• Backend: Python (FastAPI or similar frameworks)
• Frontend: React (Hooks, functional components, state management)
• Database: MongoDB (data modeling, aggregation pipelines, indexing)
• Data Engineering: Experience in data pipelines, transformations, and mapping-based ingestion
• Strong understanding of RESTful API design and integration
• Familiarity with CI/CD practices and Git-based workflows

Nice-to-Have Skills:

• Exposure to other backen d languages or frameworks (Node.js, Java, etc.)
• Experience with containerization (Docker) and deployment practices
• Knowledge of schema validatio n (e.g., Pydantic, Joi)
• Understanding of cloud-native development (AWS, Google Cloud Platform, Azure)