AI/ML Engineer

We are looking for a skilled LLM API & Integration Engineer to design, build, and maintain secure, scalable APIs (custom tools/actions) that power our Enterprise GPT applications . This role bridges backend services and large language models (LLMs) to deliver intelligent, real-time business solutions across business Key responsibilities: Design and develop APIs (RESTful/OpenAPI spec) to be used as custom tools in GPTs. Customize GPTs with MCP & Custom Tool calls Build secure, authenticated API endpoints for internal systems (e.g., Databricks (Delta lake), RAG Vector Indexes, SAP, document stores) Implement API documentation in OpenAPI/Swagger format for GPT integration. Build Custom Connectors using MCP Ensure robust logging, error handling, and observability in all APIs. Work with InfoSec and DevOps teams to ensure secure deployment and data protection. Support LLM prompt tuning and tool orchestration using the GPT builder or API interfaces. Required Skills & Experience: 5-8 years of experience Strong Experience with Understanding of LLM-based architectures and how GPTs use tools/functions. Strong experience with RESTful APIs and OpenAPI/Swagger specifications. Experience integrating LLMs with enterprise systems (Databricks) and setting up RAG for unstructured data Knowledge of authentication protocols : OAuth2, API keys, JWT. Knowledge of data privacy, role-based access control (RBAC), and enterprise security best practices. Familiarity with Azure cloud services Our Commitment to Diversity & Inclusion: Our Perks and Benefits: Our benefits and rewards program has been thoughtfully designed to recognize your skills and contributions, elevate your learning/upskilling experience and provide care and support for you and your loved ones. As an Apexon Associate, you get continuous skill-based development, opportunities for career advancement, and access to comprehensive health and well-being benefits and assistance. We also offer: o Group Health Insurance covering family of 4 o Term Insurance and Accident Insurance o Paid Holidays & Earned Leaves o Paid Parental LeaveoLearning & Career Development o Employee Wellness Job Location : Gurgaon, India