Tech Lead Backend AI & LLM Engineering

POSITION: Tech Lead Backend (AI & LLM Engineering) LOCATION: Sri Lanka / India (Remote / Hybrid) Employment Type: Full-Time Working Hours: 3:00 PM 12:00 AM (SL/IST) Work Week: Monday Friday Compensation: USD 1,800 2,300 per month (based on experience and expertise) About the Company Our client is a fast-growing global technology organization delivering next-generation AI-powered software solutions for international clients. With a strong focus on Generative AI, Agentic AI, and cloud-native technologies, the company develops intelligent, scalable, and secure enterprise applications that transform business operations. As part of its continued expansion, the organization is seeking an experienced Tech Lead Backend to lead the design and development of AI-native backend systems, intelligent APIs, and enterprise-scale AI infrastructure. The Role As the Tech Lead Backend, you will provide technical leadership while remaining handson in the design and development of scalable backend services that power AI-driven applications. You will play a key role in architecting modern backend platforms, integrating Large Language Models (LLMs), building RetrievalAugmented Generation (RAG) pipelines, developing AI agent workflows, and ensuring secure, high-performance backend systems. Working closely with AI Engineers, Frontend Developers, Product Managers, and DevOps teams, you will drive backend engineering best practices while mentoring junior engineers and contributing to architectural decisions. Key Responsibilities Design, develop, and maintain scalable backend services and APIs. Build microservices and eventdriven architectures for AIpowered applications. Develop secure, reliable, and highperformance RESTful and/or GraphQL APIs. Implement authentication, authorization, rate limiting, security controls, and API monitoring. Integrate Large Language Models (LLMs) from providers such as OpenAI, Anthropic, Google, and opensource models. Design and build RetrievalAugmented Generation (RAG) pipelines. Develop and maintain vector search and semantic retrieval systems. Build AI agent orchestration workflows and tool integrations. Optimize AI inference latency, throughput, scalability, and operational costs. Design efficient database schemas and data pipelines for structured and unstructured data. Implement caching strategies, asynchronous processing, message queues, and eventdriven workflows. Develop observability, logging, monitoring, and alerting solutions for AI services. Collaborate closely with Frontend Engineers, AI Engineers, DevOps, Product Managers, and Solution Architects. Mentor junior backend developers and promote engineering best practices through code reviews and technical leadership. Required Qualifications Bachelor's Degree in Computer Science, Information Technology, Software Engineering, Engineering, or a related discipline. Minimum 7 years of professional software development experience. Proven experience leading or mentoring backend engineering teams. Experience building enterprisescale backend applications. Python FastAPI Java Experience developing RESTful APIs and/or GraphQL APIs. Strong understanding of microservices architecture and distributed systems. Experience working with WebSockets and realtime communication technologies. Strong knowledge of databases, API security, authentication, authorization, caching, and asynchronous processing. AI & Generative AI Experience The ideal candidate should have handson experience designing and building AI-native applications using modern AI technologies, including: OpenAI APIs Anthropic APIs Embeddings RetrievalAugmented Generation (RAG) AI Agents Semantic Search Vector Databases Prompt Engineering AI Agent orchestration Certifications One or more certifications in the following areas will be considered an advantage: Data Science Generative AI POSITION: Tech Lead Backend (AI & LLM Engineering) LOCATION: Sri Lanka / India (Remote / Hybrid) Employment Type: Full-Time Working Hours: 3:00 PM 12:00 AM (SL/IST) Work Week: Monday Friday Compensation: USD 1,800 2,300 per month (based on experience and expertise) About the Company Our client is a fast-growing global technology organization delivering next-generation AI-powered software solutions for international clients. With a strong focus on Generative AI, Agentic AI, and cloud-native technologies, the company develops intelligent, scalable, and secure enterprise applications that transform business operations. As part of its continued expansion, the organization is seeking an experienced Tech Lead Backend to lead the design and development of AI-native backend systems, intelligent APIs, and enterprise-scale AI infrastructure. The Role As the Tech Lead Backend, you will provide technical leadership while remaining handson in the design and development of scalable backend services that power AI-driven applications. You will play a key