Backend Developer

Job Title: Backend Developer

Company: Greeks Labs Technologies Limited

Location: Calicut (Kozhikode), Kerala

Job Type: Full-Time

Job Requirements

• Programming Language: Python, OOP, asynchronous programming.
• Backend Framework: Django, Django REST Framework (DRF).
• REST API Integration: Third-party API integration, authentication, token management, request/response handling.
• Broker API Integration: Zerodha, Angel One, IIFL, Jainam, Alice Blue or other trading broker APIs.
• WebSocket: Real-time market data streaming, connection management, subscriptions, reconnection and heartbeat handling.
• Celery: Background task processing, Celery Beat, scheduled tasks, periodic jobs and retry handling.
• Redis: Caching, Pub/Sub, live market data distribution and temporary data storage.
• PostgreSQL: Database design, SQL queries, relationships, indexing, transactions and query optimization.
• Trading Systems: Order placement, modification, cancellation, order book, trade book, positions, holdings, P&L and margin management.
• Market Data: LTP streaming, instrument mapping, NSE/BSE equity, F&O, MCX futures and options.
• Multi-Broker Integration: Managing multiple broker connections, sessions, subscriptions and API rate limits.
• Authentication & Security: JWT, permissions, secure credential storage and API security.
• Django Channels & ASGI: Real-time communication and asynchronous request handling.
• Error Handling: API failures, token expiry, duplicate requests, failed tasks and WebSocket disconnections.
• Deployment: Linux, Nginx, Gunicorn/Daphne, Docker and AWS basics.
• Logging & Monitoring: Production logs, debugging, task monitoring and performance troubleshooting.
• Version Control: Git, GitHub, branching and pull requests.
• Trading Domain Knowledge: Order types, market hours, expiry dates, instrument tokens, brokerage and trading workflows.

Experience: Both freshers and experienced candidates can apply.

Educational Qualification: Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related field.

Work Location: In person