Python Developer

Job Description Python Developer

Location: Noida
Experience: 3-6 Years
Role: Python Backend Developer

About the Role

Hotelogix is looking for a skilled Python Backend Developer to work on the next generation of our cloud-based Hotel System & associated products.

The ideal candidate should have strong hands-on experience in Python, Flask, REST APIs, microservices and MySQL, along with good backend engineering, problem-solving and debugging skills.

You will work on business-critical modules such as reservations, room inventory, rates, payments, guest management and hotel operations, building scalable and reliable backend services.

Key Responsibilities

• Design, develop and maintain backend services using Python and Flask.
• Build scalable, secure and high-performance RESTful APIs and microservices.
• Develop complex business workflows for reservations, inventory, rates, payments and other hotel operations.
• Design clean and maintainable application, service and database layers.
• Work extensively with MySQL, including complex queries, transactions, indexing and query optimization.
• Develop database interactions using SQLAlchemy or similar ORM frameworks.
• Handle transactions, concurrency and data consistency for critical business operations.
• Write unit, integration and API tests using pytest or equivalent frameworks.
• Implement proper input validation, exception handling, logging and API error handling.
• Troubleshoot and resolve application, API, database and production performance issues.
• Work with Redis/caching where required for performance and scalability.
• Integrate with internal microservices and external/third-party APIs.
• Participate in code reviews and maintain high standards for code quality, security and maintainability.
• Collaborate with Product, QA, DevOps and other engineering teams.
• Work with Git-based development workflows, pull requests and code reviews.
• Participate in Agile/Scrum development, estimation and sprint activities.

Must-Have Skills:

Python & Flask

• 3-6 years of software development experience with strong hands-on experience in Python backend development.
• Strong knowledge of Python 3.x.
• Good understanding of OOP, data structures, exception handling, decorators, generators, modules/packages and Python best practices.
• Hands-on experience developing production applications using Flask or a comparable Python web framework.
• Ability to write clean, modular, reusable and testable code.

REST APIs & Microservices

• Strong experience designing and developing RESTful APIs.
• Hands-on experience working with microservices architecture.
• Good understanding of:
• HTTP methods and status codes
• API request/response design
• Authentication and authorization
• Input/request validation
• Service-to-service communication
• API versioning
• Exception and error handling
• Idempotency
• Ability to develop APIs involving complex business logic, not just basic CRUD operations.

MySQL & SQL

• Hands-on experience with MySQL or similar relational databases.

• Good working knowledge of SQL, including JOINs, aggregations, subqueries, and CRUD operations.

• Good understanding of:

• Database tables, relationships, primary and foreign keys

• Basic indexing concepts

• Database transactions and data consistency

• Ability to write and troubleshoot SQL queries used in backend applications.

• Basic understanding of query optimization and database performance.

• Exposure to concepts such as concurrency, locking, and transaction handling is an advantage.

ORM

• Hands-on experience with SQLAlchemy or similar Python ORM.
• Ability to understand the underlying SQL generated by ORM operations.
• Comfortable using direct SQL where appropriate.

Automated Testing

• Experience with pytest or equivalent Python testing frameworks.
• Ability to write:
• Unit tests
• Integration tests
• API tests
• Mock-based tests
• Positive, negative and boundary test cases

Security

Good understanding of backend and API security concepts, including:

• Authentication and authorization
• JWT/token-based authentication
• Input validation
• SQL injection prevention
• API access control
• Secure configuration and secrets handling
• Basic OWASP/API security principles

Development Environment & Tools

Hands-on experience with:

• Git
• GitHub/Bitbucket or similar
• Linux/Ubuntu
• Docker
• Application logging and debugging
• Production issue troubleshooting

Good-to-Have Skills

Experience with any of the following will be an advantage:

• Redis
• MongoDB
• FastAPI
• Docker Compose
• Kubernetes/K3s
• CI/CD pipelines
• GCP, AWS or Azure
• API Gateway technologies
• Message queues or asynchronous processing
• Monitoring and observability tools
• Application and database performance optimization
• Angular/frontend technologies
• Third-party API integrations
• Payment gateway integrations
• Experience with hospitality, travel, booking, ERP or other transactional SaaS products

What We Are Looking For

• Strong analytical and problem-solving skills.
• Strong Python and backend programming fundamentals.
• Ability to understand and implement complex business requirements.
• Good understanding of scalable and maintainable backend architecture.
• Ability to independently debug application and database issues.
• Strong ownership of features from development through testing.
• Focus on code quality, security, performance and maintainability.
• Good communication and collaboration skills.
• Ability to work effectively with Product, QA and DevOps teams.
• Willingness to learn and work on a large, business-critical SaaS platform.