BackendEngineer

**This role is for one of the Weekday's clients** **Salary range: Rs 1500000 - Rs 2800000 (ie INR 15 - 28 LPA)** Min Experience: 3 years Location: Mumbai JobType: full-time We are looking for a Backend Engineer with 3–4 years of hands-on experience in building and maintaining production-grade systems. The ideal candidate has strong expertise in Python, with a preference for FastAPI, and a solid understanding of core backend concepts such as HTTP protocols, WebSockets, queuing systems, and distributed architectures. You will play a key role in designing and developing services that are robust, scalable, and fault-tolerant. **Requirements** **Key Responsibilities** * Design, develop, and maintain backend services using Python, with a strong emphasis on FastAPI-based applications * Build APIs and microservices that are efficient, scalable, and easy to maintain * Work with HTTP protocols and WebSockets to enable real-time and asynchronous communication * Implement queue-based systems (e.g., task queues, message brokers) for handling background jobs and distributed workloads * Ensure system reliability by designing for failure scenarios, including retries, circuit breakers, and graceful degradation * Optimize application performance for concurrency, scalability, and low latency * Collaborate with cross-functional teams including frontend, DevOps, and product to deliver high-quality features * Write clean, well-documented, and testable code following best practices * Participate in code reviews and contribute to improving engineering standards **Required Skills & Qualifications** * 3–4 years of backend development experience * Strong proficiency in Python * Hands-on experience with FastAPI (preferred) or similar modern Python frameworks * Solid understanding of HTTP protocols, RESTful API design, and WebSockets * Experience working with asynchronous programming and concurrency models * Familiarity with distributed systems concepts such as service communication, scaling, a