Contract - Backend Developer – Python / Fast API

Vivantify Technology Solutions India Pvt. Ltd.; Pune District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Vivantify Technology Solutions India Pvt. Ltd. in Pune is seeking a Backend Developer with strong Python and FastAPI experience to build scalable RESTful APIs and robust backend services.

The role focuses on asynchronous programming, PostgreSQL data handling, and secure API design, collaborating with frontend, product, and DevOps teams. The candidate will contribute to testing, Docker-based deployments, CI/CD pipelines, troubleshooting, logging, and monitoring, while delivering production-ready

Qualifications

• Backend development with Python and FastAPI.
• Strong PostgreSQL/SQL experience and data handling.
• Familiar with async programming and JSON/JSONB.

Responsibilities

• Design and develop RESTful APIs using FastAPI.
• Build backend services and implement business logic using Python.
• Develop and optimize PostgreSQL queries and database operations.
• Implement authentication, authorization, validation, and secure API practices.
• Write and maintain unit and integration tests with Pytest.
• Support Docker, CI/CD pipelines, and production deployments.
• Troubleshoot backend issues and improve performance.
• Collaborate with frontend, product, and DevOps teams.

Skills

Python

FastAPI

Async programming

REST API development

PostgreSQL

SQL

Git

Docker

CI/CD

JWT/OAuth authentication

Pytest

Tools

Docker

CI/CD

Pytest

Job description

About The Role

We are seeking a

Location

Pune

Experience

5–7 Years

Openings

1

Employment Type

Contractor / Sub-con

About The Role

We are seeking a Backend Developer with strong experience in Python and FastAPI to build scalable, high-performance backend systems. The role focuses on developing RESTful APIs, working with PostgreSQL, implementing secure backend services, and supporting production-ready applications. The candidate will collaborate with frontend, product, and DevOps teams.

Job Description

The role involves designing and developing backend services and business logic using Python and FastAPI, with an emphasis on asynchronous programming, API validation, authentication, and reliable application performance. The developer will work extensively with PostgreSQL and SQL, including query optimization, indexing, transactions, and JSON/JSONB data.

The position also involves automated testing, Docker-based deployments, CI/CD pipelines, troubleshooting, logging, debugging, and monitoring. The developer will contribute to production deployments and continuous improvements to backend performance and reliability.

Key Responsibilities

• Design and develop RESTful APIs using FastAPI.
• Build backend services and implement business logic using Python.
• Develop and optimize PostgreSQL queries and database operations.
• Implement authentication, authorization, validation, and secure API practices.
• Write and maintain unit and integration tests using tools such as Pytest.
• Support Docker, CI/CD pipelines, and production deployments.
• Troubleshoot backend issues and improve application performance.
• Collaborate with frontend, product, and DevOps teams.

Required Skills

• Python
• FastAPI
• Python 3.8
• Async programming and Pydantic
• REST API development
• API documentation, middleware, and exception handling
• PostgreSQL and SQL
• Indexing, transactions, JSON/JSONB, and query optimization
• Git, Docker, and CI/CD
• JWT/OAuth authentication
• PytestLogging, debugging, and monitoring

Preferred / Good To Have

• Redis or other caching solutions
• Message queues such as Kafka, RabbitMQ, or Celery
• Microservices experience
• Cloud platforms such as AWS, Azure, or GCP
• Kubernetes or container orchestration
• Observability tools such as Grafana, Prometheus, or ELK

Mandatory Skills

• Python

Candidate Profile

The ideal candidate will have backend development experience with strong hands-on expertise in Python, FastAPI, and PostgreSQL. The candidate should be comfortable developing production-ready APIs, troubleshooting performance issues, writing automated tests, and working collaboratively with product, frontend, and DevOps teams.

Benefits Package

• Competitive salary and benefits package
• Opportunities for professional growth and development
• A collaborative and inclusive work environment
• The opportunity to work on exciting and challenging projects with leading clients