Sr. Backend Engineer

1 week ago

Gurgaon Haryana, India Gonoise Full time

About Luna Luna is a health-tech company reimagining personal health through an integrated ecosystem of hardware software and intelligence At its core is LifeOS Luna s adaptive health operating system that interprets biometric data from the Luna Ring and other future devices to deliver real-time guidance on energy circadian rhythm and recovery With science-first design and a global user base Luna aims to make precision health both accessible and aspirational Location Gurgaon About the Role We are seeking a talented and highly skilled Backend Engineer with strong expertise in Node js AI integrations and scalable system design You will be responsible for building high-performance backend services integrating advanced AI capabilities using OpenAI Gemini and designing robust systems that support real-time large-scale user interactions You will work closely with product managers AI engineers and frontend mobile teams to craft APIs optimize performance and ensure seamless user experiences across the platform Responsibilities Designing developing and maintaining scalable backend services using Node js Integrating OpenAI APIs embeddings vector stores context memory frameworks and other LLM-powered features Building reliable secure and well-documented REST GraphQL APIs Architecting backend systems that support millions of requests with high reliability Writing clean modular and testable code with strong attention to performance Working with cross-functional teams Product AI Mobile Web to bring new features to life Maintaining database models optimizing queries and ensuring high availability Implementing monitoring logging alerting and observability for backend services Requirement Bachelor s degree in Computer Science Engineering or related field 3-4 years of professional backend development experience Strong proficiency in Node js Express Nest js and modern JavaScript TypeScript Hands-on experience with OpenAI APIs LLM orchestration prompt engineering embeddings and AI memory context systems Experience building scalable distributed microservices-based architectures Solid understanding of databases MySQL MongoDB and caching systems Redis Familiarity with message queues like Kafka RabbitMQ or SQS is a plus API security rate limiting fault tolerance and system performance Exposure to AI agents vector databases or RAG systems is a strong advantage Excellent problem-solving skills and a proactive ownership-driven mindset Ability to work collaboratively in a fast-paced cross-functional team environment What We Offer Competitive compensation and benefits Opportunity to work on cutting-edge technology in a fast-paced environment A collaborative and growth-focused culture

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