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Senior Backend Engineer at Weekday AI. This role is for one of Weekday’s clients. Min Experience: 3 years. Location: India. JobType: full-time. About the Role. We are looking for a . Senior Backend Engineer. who is passionate about designing scalable systems, writing clean and efficient code, and building the backbone of products that impact thousands of users. You will be a core contributor to our engineering team, working on mission-critical applications, APIs, and data systems that power our platforms.. This is an exciting opportunity to work with cutting-edge technologies in a collaborative environment where your technical insight and problem-solving skills will shape our backend architecture and ensure the performance, reliability, and security of our services.. Key Responsibilities. . . System Design & Development:. Design, build, and maintain robust, scalable backend systems, services, and APIs that support web and mobile applications. . . . Architecture & Optimization:. Architect microservices-based solutions that are maintainable and optimized for performance. Continuously refactor code and system components to improve quality and performance. . . . Database Management:. Design efficient database schemas, write complex queries, and ensure data integrity and performance (experience with both SQL and NoSQL is a plus). . . . API Development & Integration:. Develop RESTful and/or GraphQL APIs and integrate with third-party services and internal microservices. . . . Testing & Deployment:. Write unit and integration tests. Manage CI/CD pipelines, ensuring high test coverage and automated deployment practices. . . . Security & Compliance:. Ensure backend systems meet security standards and best practices. Address vulnerabilities, and handle data with sensitivity and compliance. . . . Team Collaboration:. Work closely with frontend engineers, DevOps, product managers, and designers to deliver end-to-end features. Participate in code reviews and mentor junior engineers. . . . Monitoring & Support:. Implement logging, monitoring, and alerting to ensure system availability and to proactively detect issues. . . Requirements. . . Experience:. Minimum of 3 years of professional experience in backend development roles. . . . Languages & Frameworks:. Proficiency in backend programming languages such as . Node.js, Python, Go, Ruby, or Java. . Experience with modern backend frameworks like . Express, Django, Spring Boot. , etc. . . . Databases:. Hands-on experience with relational databases like . PostgreSQL, MySQL. and/or NoSQL databases like . MongoDB, Redis. . . . . Architecture:. Familiarity with . microservices architecture. , . event-driven systems. , and . message queues. (Kafka, RabbitMQ, etc.). . . . Cloud & DevOps:. Experience with . cloud platforms. (AWS, Azure, GCP), containerization (Docker), orchestration (Kubernetes), and CI/CD pipelines. . . . Best Practices:. Deep understanding of software engineering principles, design patterns, code modularity, and system scalability. . . . Soft Skills:. Strong problem-solving ability, attention to detail, excellent communication skills, and a collaborative mindset. . . Preferred Qualifications. . Experience working in . agile development environments. . . . Exposure to . Domain Driven Design (DDD). or . Clean Architecture. . . . Previous experience in . B2B SaaS. , . FinTech. , or . data-intensive. applications is a plus.. . Company Location: India.