Senior Backend Engineer (Python/FastAPI)

This role is for one of the Weekday's clients

Requirements

What Success Looks Like (First 3-6 Months):

• Build and scale high-performance backend services and APIs using Python and FastAPI.
• Design modular, extensible microservices that integrate seamlessly with distributed systems.
• Take ownership of performance, scalability, and fault tolerance for services handling millions of time series data points.
• Optimize data ingestion, transformation, and orchestration pipelines.
• Collaborate closely with frontend, ML, and infrastructure teams to deliver stable, production-grade services.
• Contribute to system design discussions, code reviews, and technical decision-making.
  

Tech Stack You'll Work With:

• Languages: Python (primary), SQL
• Frameworks: FastAPI, Flask (secondary), asyncio
• Infrastructure / Tooling: Docker, Kubernetes, GitHub Actions, Airflow
• Data / Workflow: Kafka, Postgres, Redis, Celery
• Testing / CI/CD: Pytest, unit and integration testing frameworks
  

What We're Looking For:

Must-Haves:

• 4-8 years of experience in backend product engineering.
• Strong expertise in Python and FastAPI (or similar frameworks).
• Solid fundamentals in data structures, algorithms, and system design.
• Proven experience building scalable, production-grade REST APIs.
• Hands-on experience with Docker, CI/CD pipelines, and microservice architectures.
• Strong SQL and data modeling skills.
• Familiarity with async programming and performance optimization.
  

Nice-to-Haves:

• Exposure to distributed compute frameworks like Spark, Dask, or Ray.
• Experience with Kubernetes, AWS/GCP, or MLOps-style data pipelines.
• Prior work in enterprise-scale SaaS or data platforms.
  

Why Join:

• Build core backend systems powering global enterprise AI platforms.
• Collaborate in a high-agency environment with top-tier engineering peers.
• Work in a fast-scaling company solving high-impact technical challenges.
• Opportunity for end-to-end ownership and growth into system design or tech lead roles.