Key responsibilitiesAs a core member of our backend team, you will build scalable, high-performance API architecture and data pipelines that power enterprise data-driven solutions.
• Design, build and maintain RESTful APIs and microservices in Python using FastAPI, Django/DRF or Flask.
• Build asynchronous and distributed processing with Celery, RabbitMQ and Redis for high-volume metadata ingestion and enrichment jobs.
• Design schemas, indexes and queries across PostgreSQL, MongoDB and Elasticsearch, and tune them for large datasets.
• Integrate external APIs with retries, rate limiting and caching.
• Build LLM-enabled workflows: RAG pipelines, embeddings, vector search and structured information extraction from documents.
• Apply NLP techniques (NER, entity linking, text classification) to turn unstructured content into structured data.
• Secure services with JWT/OAuth2 authentication and role-based authorization.
• Containerise services with Docker and ship them through CI/CD (GitHub Actions, GitLab CI, Jenkins or Azure DevOps) to AWS or Azure.
• Own production health:



structured logging, monitoring, alerting, debugging and root-cause analysis.
• Contribute to system design and architecture decisions, review code and mentor junior engineers.

Required qualifications• B.E./B.Tech in Computer Science or a related field, or equivalent experience.
• 5+ years building production backend systems in Python, with solid OOP, data structures and algorithms.
• Hands-on experience with at least two of FastAPI, Django/DRF and Flask.
• Solid SQL and schema design on PostgreSQL, plus working experience with MongoDB.
• Production use of Redis and a message broker (RabbitMQ or similar) with Celery or equivalent task queues.
• Experience designing secure REST APIs (JWT, OAuth2) and integrating third-party APIs.
• Comfortable with Docker, Git and at least one CI/CD tool; deployed services on AWS or Azure.
• A measurable track record of performance work, e.g. reducing API latency o

📌 Senior Python Systems Engineer (Bengaluru)
🏢 MOLECULAR CONNECTIONS
📍 Bengaluru