Senior Backend Developer

9 hours ago


Bengaluru, Karnataka, India Big Air Lab Full time ₹ 15,00,000 - ₹ 25,00,000 per year

Job Title : Senior Backend Developer (Python, FastAPI & MongoDB)
Location : Bengaluru, India
Position Summary
We are looking for a Senior Backend Developer with 4+ years of professional experience in Python-based development, especially using FastAPI and MongoDB. The ideal candidate is skilled in building and maintaining scalable, high-performance back-end services and APIs, has strong understanding of modern database design (SQL & NoSQL), and has experience integrating backend services with cloud platforms.

Experience or interest in AI/ML projects is a strong plus, as our products often interface with LLMs and real-time AI pipelines.

Key Responsibilities

  • Design, build, and maintain robust backend services using Python and FastAPI.
  • Develop and maintain scalable RESTful APIs for internal tools and third-party integrations.
  • Work with MongoDB, PostgreSQL, and Redis to manage structured and unstructured data efficiently.
  • Collaborate with frontend, DevOps, and AI/ML teams to deliver secure and performant backend infrastructure.
  • Implement best practices in code architecture, performance optimization, logging, and monitoring.
  • Ensure APIs and systems are production-ready, fault-tolerant, and scalable.
  • Handle API versioning, documentation (Swagger/OpenAPI), and error management.
  • Optimize queries, indexes, and DB schema for high-performance data access.
  • Maintain clean code with emphasis on object-oriented principles and modular design.
  • Troubleshoot production issues and deliver timely fixes and improvements.

Qualifications

  • Overall Experience : 4+ years in backend software development.
  • Python : Strong proficiency with object-oriented programming.
  • Frameworks : Hands-on experience with FastAPI (preferred), :
  • MongoDB : Experience with schema design, aggregation pipelines, and indexing.
  • Familiarity with SQL databases (PostgreSQL/MySQL).
  • Experience with Redis and optionally Supabase.

API Development

  • Proficient in building and documenting REST APIs.
  • Strong understanding of HTTP, request lifecycles, and API security.

Testing & Debugging

  • Strong debugging and troubleshooting skills using logs and tools.

Performance & Scalability

  • Experience optimizing backend systems for latency, throughput, and reliability.
  • Tools : Git, Docker, Linux commands for development environments.

Must-Have Skills

  • Proficiency in Python and object-oriented programming
  • Strong hands-on experience with FastAPI (or similar async frameworks)
  • Knowledge of MongoDB for schema-less data storage and complex queries
  • Experience building and managing REST APIs in production
  • Comfortable working with Redis, PostgreSQL, or other data stores
  • Experience with Dockerized environments and Git workflows
  • Solid grasp of backend architecture, asynchronous programming, and performance tuning
  • Ability to write clean, testable, and maintainable code

Good-to-Have Skills

  • Experience with asynchronous programming using async/await
  • Integration with third-party APIs (e.g., Firebase, GCP, Azure services)
  • Basic understanding of WebSocket and real-time backend patterns
  • Exposure to AI/ML pipelines, model APIs, or vector DBs (e.g., FAISS)
  • Basic DevOps exposure : GitHub Actions, Docker Compose, Nginx
  • Familiarity with JWT, OAuth2, and backend security practices
  • Familiarity with CI/CD pipelines and versioning
  • Basic understanding of GraphQL or gRPC is a plus

Preferred Qualifications

  • Bachelors degree in Computer Science, Engineering, or a related field
  • Demonstrated experience delivering production-grade backend services
  • Experience working in agile teams and using tools like Jira
  • Familiarity with Agile/Scrum methodologies and sprint cycles
  • Interest or experience in AI/ML-integrated systems is a plus

Perks & Benefits

  • Competitive salary with performance-based bonuses
  • Opportunity to work on AI-integrated platforms and intelligent products
  • Access to latest tools, cloud platforms, and learning resources
  • Flexible working hours and hybrid work options
  • Wellness initiatives and team-building activities

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