AI Engineer � Generative AI

BlackCube Labs; Mumbai; On-site; INR 1,200,000 - 2,000,000; Full time

Job summary

BlackCube Labs in Mumbai is seeking an experienced AI Engineer with 3-6 years of hands-on experience building production-grade generative AI features, including text generation, summarization, and conversational AI. You will design RAG pipelines, tool-calling workflows, and secure REST APIs for scalable cloud backends.

Ideal candidates have a strong foundation in LLM systems, prompt engineering, and experience with major platforms (Gemini, Vertex AI, LangChain).

Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, or related field, or equivalent practical experience.
• 3-6 years of AI/software engineering delivering LLM-powered applications in production.
• Strong understanding of transformer architecture, tokenization, context windows, embeddings, and prompting trade-offs.

Responsibilities

• Design, develop, and deploy generative AI features such as text generation, summarization, conversational assistants, and multi-step agentic workflows.
• Architect and implement RAG pipelines with document ingestion, embeddings, vector stores, retrieval, and grounding quality checks.
• Develop agentic systems using tool/function calling, structured outputs, and orchestration patterns with guardrails and human-in-the-loop controls.
• Establish prompt engineering standards, versioning, structured outputs, and data-driven quality optimization.
• Build evaluation frameworks for LLM outputs including test datasets, automated evaluations, and monitoring for hallucination.
• Integrate AI services into backend apps via REST APIs/microservices with robust JSON handling, streaming, retries, and error handling.
• Ensure secure API authentication and access management (OAuth 2.0, IAM, secrets).

Skills

Python

LLM fundamentals

Prompt engineering

RAG pipelines

Tool calling

REST APIs

Cloud security

Observability

Compliance

Security & IAM

Education

Bachelor's or Master's degree in CS/Engineering

Tools

Vertex AI

LangChain

LangGraph

CrewAI

Hugging Face

Pinecone

Weaviate

pgvector

Job description

We are seeking an experienced AI Engineer with 3-6 years of hands-on experience designing, developing, and deploying generative AI applications in production environments. The candidate will be responsible for building intelligent, AI-powered features - including text generation, summarization, conversational AI, and agentic workflows - and integrating them securely into scalable, cloud-based backend systems.

The role requires a strong foundation in large language model (LLM) systems, including prompt engineering, retrieval-augmented generation (RAG), agent orchestration, and output evaluation, combined with solid backend development expertise. Experience with the Google AI ecosystem (Gemini API, Vertex AI, Agent Development Kit) is an advantage; candidates with equivalent experience on other major LLM platforms are encouraged to apply.

• Design, develop, and deploy generative AI features such as text generation, summarization, conversational assistants, and multi-step agentic workflows.
• Architect and implement retrieval-augmented generation (RAG) pipelines, covering document ingestion, chunking, embeddings, vector store integration, retrieval and reranking, and grounding quality assessment.
• Develop agentic systems using tool/function calling, structured outputs, and orchestration patterns, incorporating appropriate guardrails, fallback mechanisms, and human-in-the-loop controls.
• Establish and maintain prompt engineering standards, including prompt versioning, structured output schemas, and data-driven optimization of response quality and accuracy.
• Build evaluation frameworks for LLM outputs, including curated test datasets, automated evaluations, regression testing, and monitoring for hallucination and grounding quality.
• Integrate AI services into backend applications through well-designed REST APIs and microservices, with robust handling of structured JSON responses, streaming, retries, and error states.
• Implement secure API authentication and access management for AI services, including API key management, OAuth 2.0, IAM, secrets handling, and safeguards against prompt injection and data leakage.
• Monitor and optimize production performance across response latency, token cost, throughput, and output quality, supported by appropriate observability and tracing.
• Collaborate with product managers, data engineers, and application developers to embed AI capabilities into business applications while ensuring security, reliability, and compliance.

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• 3-6 years of experience in AI/software engineering, including hands-on delivery of LLM-powered applications in production.
• Strong understanding of LLM fundamentals, including transformer architecture, tokenization, context windows, embeddings, sampling parameters, and the trade-offs between prompting, RAG, and fine-tuning.
• Working knowledge of common LLM failure modes (e.g., hallucination, prompt sensitivity, context degradation) and corresponding mitigation strategies.
• Hands-on experience with one or more major LLM platforms, such as Google Gemini, OpenAI, Anthropic Claude, or open-source models (Hugging Face, vLLM).
• Practical experience building RAG systems, including chunking strategies, embedding models, vector databases (e.g., pgvector, Pinecone, Weaviate, Vertex AI Vector Search), and retrieval evaluation.
• Experience implementing tool/function calling and agentic workflows, using frameworks such as LangGraph, LangChain, Google ADK, or CrewAI, or through custom implementations.
• Proficiency in prompt engineering, supported by structured evaluation of output quality.
• Strong programming skills in Python; experience with Node.js or similar backend technologies is a plus.
• Solid backend engineering fundamentals, including REST API design, microservices architecture, and scalable, fault-tolerant system design.
• Experience integrating AI services within cloud architectures (GCP, AWS, or Azure), including secure API authentication and structured JSON response handling.

Preferred Qualifications

• Direct experience with the Google AI ecosystem, including Gemini API, Vertex AI, Google Agent Development Kit (ADK), or Google Antigravity.
• Experience with the Model Context Protocol (MCP) or building tool integrations for agentic systems.
• Exposure to model fine-tuning (e.g., LoRA/PEFT, instruction tuning) and model serving.
• Familiarity with LLM observability and evaluation tooling (e.g., LangSmith, Langfuse, Vertex AI Evaluation).
• Experience with modern front-end frameworks (React, Angular, or Vue.js) for building responsive, AI-driven user interfaces.
• Experience with containerization and orchestration (Docker, Kubernetes) and CI/CD practices.
• Familiarity with responsible AI practices, including content safety, PII handling, and compliance considerations.