Blessing Softtech is hiring a Senior Backend Engineer to design, build, and scale the backend systems powering its AI products, including Fonazo, an AI voice agent platform. The role involves end-to-end ownership of backend engineering, including architecture, APIs, databases, performance optimisation, third-party integrations, and production reliability.

Key Responsibilities
• Design, develop, and maintain scalable, secure, high performance backend services using Python and FastAPI.
• Build and maintain RESTful APIs with authentication, validation, error handling, and API documentation using Swagger/OpenAPI.
• Design and optimise PostgreSQL databases, including schemas, relationships, SQL queries, indexing, transactions, and migrations.
• Implement asynchronous processing, background tasks, caching, and concurrency to improve application performance.
• Identify performance bottlenecks and ensure backend reliability and scalability.
• Containerise applications using Docker and support deployment across development, staging, and production environments on AWS.
• Develop CI/CD workflows, deployment processes, and rollback strategies.
• Integrate AI APIs and third-party services into backend workflows.
• Work with telephony platforms such as Plivo or Twilio for voice and call automation.
• Write clean, modular, maintainable Python code and implement unit and integration testing.
• Apply secure authentication,



authorisation, input validation, and database security practices.
• Take end-to-end ownership of backend modules, participate in code reviews, mentor developers, and collaborate with frontend, QA, DevOps, and product teams. Required

Skills:
• Strong Python programming skills.
• Hands-on experience with FastAPI.
• REST API development and third party integrations.
• SQL and PostgreSQL database management and optimisation.
• Docker, AWS, and CI/CD fundamentals.
• Git, GitHub, and collaborative development workflows.
• Unit testing, integration testing, debugging, and Postman.
• Python asynchronous programming and concurrency.
• Backend security, performance optimisation, and scalable architecture.
• Experience integrating AI APIs and telephony platforms such as Plivo or Twilio is an advantage. Eligibility:
• 5+ years of professional backend development experience.
• Ability to independently own backend development end to end.
• Strong analytical thinking and technical decision making.
• Proven experience delivering production ready, secure, and maintainable software.

How to Apply
Interested candidates should send their application to [email protected]

Location:
Viman Nagar, Pune, Maharashtra Employment Type: Full time, On-site Joining: Immediate joiners preferred

📌 Back End Developer (India)
🏢 Blessing SoftTech
📍 India