Senior Python Developer

Tekskills Inc.; Mumbai; On-site; INR 1,200,000 - 2,100,000; Full time

Job summary

Tekskills Inc. in India is seeking a Senior Python Developer to own backend systems and delivery of scalable services. You will work across core Python, FastAPI, async programming, and data processing to build robust APIs and services.

The role emphasizes excellent testing, clean design, and collaboration in modern cloud-native environments using Docker, CI/CD, and observability practices.

Qualifications

• 8+ years of Python/backend experience
• Proficient with FastAPI, Pydantic, and typing
• Experience with async programming and concurrency
• Data processing experience (Polars or similar)
• API design with RESTful services and OpenAPI/Swagger
• Strong testing practices (pytest) and TDD
• DDD and SOLID design understanding
• Event-driven architecture experience
• Familiarity with logging/observability and performance profiling
• CI/CD and containerized deployment (Docker)

Skills

Core Python

Async programming

FastAPI & typing

Data processing with Polars

API design RESTful

TDD & testing practices

DDD

Event-driven design

SOLID principles

Design patterns

Trade-off analysis

Tools

Git

CI/CD

Docker

Kubernetes

PostgreSQL

OpenAPI/Swagger

Job description

Senior Python Developer

Experience: 8+ Years

Bangalore / Gurgaon

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)