Senior Python Developer

Tekskills Inc.; Kolkata District; On-site; INR 2,200,000 - 6,000,000; Full time

Job summary

Tekskills Inc. is seeking a Senior Python Developer with 8+ years of experience to join our backend team. The role focuses on core Python, asynchronous programming, and building high-performance services using FastAPI and Pydantic in a cloud environment.

You will design APIs, implement data processing workflows (Polars or similar), and drive quality through automated tests and robust architecture. The position targets offices in Bangalore or Gurgaon, offering exposure to modern design patterns,

Qualifications

• 8+ years of backend development experience.
• Strong Python expertise with modern tooling and typing.
• Experience designing scalable RESTful APIs and data pipelines.
• Familiarity with testing, CI/CD, and cloud deployments.

Tools

FastAPI

Pydantic

OpenAPI/Swagger

Polars

RESTful APIs

Git

Docker

Kubernetes

PostgreSQL

Job description

Senior Python Developer

Experience: 8+ Years

Bangalore / Gurgaon

Skillset:

• Core Python & Backend
  • Advanced Python (including async/await, concurrency, and performance considerations)
  • Asynchronous programming (asyncio, async frameworks)
  • Strong experience with FastAPI, Pydantic, and modern Python typing
  • Data processing experience using Polars (or similar columnar data frameworks)
  • API design (RESTful APIs; familiarity with OpenAPI/Swagger)
• Architecture & Design
  • Test-Driven Development (TDD) and strong testing practices
  • Domain-Driven Design (DDD)
  • Event-driven architecture
  • Solid understanding of SOLID principles, GRASP, DRY, and Clean Code
  • Experience applying common design patterns appropriately
  • Ability to reason about trade-offs in low-level design
• Quality, Reliability & Operations
  • Strong unit, integration, and contract testing practices (e.g., pytest)
  • Experience with logging, monitoring, and observability (metrics, tracing)
  • Understanding of performance profiling and optimization
  • Familiarity with error handling, resilience patterns, and fault tolerance
• Tooling & Ecosystem
  • Version control with Git and collaborative workflows (PR-based development)
  • Experience working in CI/CD pipelines
  • Familiarity with containerization (Docker; Kubernetes a plus)
  • Experience with relational and/or NoSQL databases (PostgreSQL, etc.)
  • Comfort working in cloud environments (AWS/GCP/Azure any one is sufficient)