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This job expired on 28/07/2026. It no longer accepts applications.
Senior Backend Developer (FastAPI)
Infix Systems · Territoire de la Capitale fédérale
Job description
About the role
We are seeking a senior backend developer with deep expertise in FastAPI to join our Islamabad team. The role focuses on building high‑performance, scalable services that power our core products.
Key responsibilities
- Design, develop and maintain RESTful APIs using FastAPI.
- Create and manage GraphQL endpoints with frameworks such as Strawberry, Ariadne or Graphene.
- Define optimized database schemas for both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) stores.
- Write clean, testable code and implement unit and integration tests.
- Containerize applications with Docker and orchestrate deployments on AWS, Azure or GCP.
- Collaborate with cross‑functional teams to define API specifications and ensure seamless integration.
- Maintain CI/CD pipelines and version control using Git.
Required profile
- 10+ years of professional backend development experience.
- Strong proficiency in Python and FastAPI.
- Hands‑on experience with GraphQL and micro‑service architectures.
- Proven ability to work with relational and document databases.
- Experience with authentication mechanisms such as OAuth2 and JWT.
Required skills
- Python
- FastAPI
- GraphQL (Strawberry, Ariadne, Graphene)
- PostgreSQL, MySQL, MongoDB, Redis
- SQLAlchemy, Tortoise‑ORM
- OAuth2, JWT
- Docker
- AWS, Azure, GCP
- RabbitMQ, Kafka
- Git, CI/CD pipelines
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Infix Systems
Territoire de la Capitale fédérale