We are seeking a Lead AI Engineer to design, build and scale cutting-edge AI applications powered by large language models. In this role, you will partner with clients to deliver tailored LLM-driven solutions, architect agentic systems and drive the adoption of emerging AI technologies across enterprise environments.

Responsibilities Design, implement and maintain end-to-end AI applications, including chatbots, Q&A; platforms, agent workflows and other LLM-driven solutions

Collaborate directly with clients to understand their needs, identify opportunities and recommend tailored AI/LLM solutions that drive business value

Architect and optimize robust data pipelines, prompt strategies and datasets to ensure effective, accurate and scalable AI models

Evaluate, monitor and refine AI system performance, ensure outputs are accurate, secure, scalable and compliant with industry regulations and best practices

Conduct research, design experiments and perform rapid prototyping to validate technical feasibility and demonstrate the business value of AI solutions

Stay current with evolving LLM technologies, frameworks, protocols (such as MCP, A2A, ACP) and methodologies, continuously improve solution quality and client outcomes

Design and implement agentic systems with frameworks such as LangChain, LangGraph and Semantic Kernel, integrate with vector databases and advanced memory architectures

Develop and maintain APIs and system integrations for production-grade AI applications, including enterprise system integration (CRM, ERP, databases)

Deploy AI solutions at scale, consider performance, cost-efficiency, maintainability, observability and security (including guardrails and prompt injection prevention)

Implement and monitor retrieval systems (keyword search, vector search, embeddings), ranking algorithms and agent evaluation frameworks

Use MLOps/AIOps practices for agentic systems and ensure robust observability and monitoring of deployed solutions

Clearly communicate complex technical concepts and AI strategies to both technical and non-technical stakeholders, iterate on models based on user feedback Requirements Strong proficiency in at least one modern programming language (such as Python, Java, C#, Go, etc.);

experience with web frameworks like FastAPI or similar is a plus





Deep understanding of the AI application development lifecycle, including production deployment, system integration and rapid UI prototyping (Streamlit, Gradio or similar)

Familiarity with major LLM platforms and APIs (OpenAI, Anthropic, Amazon Bedrock, Gemini) and related frameworks (LangChain, LangGraph, LlamaIndex, Strands Agents, etc.)

Knowledge of advanced AI integration patterns (e.g., RAG, agent orchestration, tool calling), retrieval systems (keyword/vector search, embeddings) and ranking algorithms

Experience to deploy AI solutions at scale, with a focus on performance, cost-efficiency, maintainability, observability and security (including guardrails and prompt injection prevention)

Proven ability to evaluate generative AI quality with retrieval/classification scores, LLM-based evaluation, agent evaluation metrics and A/B testing

Experience with vector databases (Pinecone, Weaviate, ChromaDB, FAISS) and semantic/hybrid search

Experience to design experiments, conduct A/B tests and iterate on models based on user feedback

Experience with enterprise system integration (CRM, ERP, databases) and deployment to cloud AI platforms or on-premise solutions

Experience with observability and monitoring tools/frameworks, and application of MLOps/AIOps practices for agentic systems

Familiarity with emerging protocols (MCP, A2A, ACP) and advanced memory architectures

Proven experience in AI engineering and delivery of ML-based solutions in production environments

Strong problem-solving skills, attention to detail and ability to work independently and collaboratively

Excellent communication, collaboration and interpersonal skills, with the ability to explain complex technical concepts to non-technical stakeholders Technologies Proficiency in at least one modern programming language (e.g., Python, Java, C#, Go, etc.) for AI development

Web frameworks: FastAPI, Streamlit, Gradio, Flask, Spring Boot,



ASP.NET or similar

Major LLM platforms and APIs: OpenAI, Anthropic, Amazon Bedrock, Gemini

Agentic frameworks: LangChain, LangGraph, Semantic Kernel, LlamaIndex, Strands Agents

Data pipeline and integration tools

Vector databases: Qdrant, FAISS, Chroma, Pinecone, Weaviate, ChromaDB

Retrieval and ranking systems: keyword search, vector search, embeddings, ranking algorithms

Cloud AI platforms: Azure OpenAI, Amazon Bedrock, GCP Vertex AI

On-premise solutions: vLLM

Enterprise AI platforms: AWS AgentCore, Databricks AgentBricks, Google Agents Space, Azure AI Foundry

Observability and monitoring tools/frameworks

MLOps/AIOps practices for agentic systems

Security and guardrail tools for AI applications

Protocols: MCP, A2A, ACP

Advanced memory architectures We offer Connectivity Bonus (25,000 ARS are paid with a salary receipt at the end of each month as a non-wages concept).

Medicina Prepaga (It covers the collaborator and direct family group).

Paternity Leave (Two additional days are added to what is established by law, total of 4 days).

Discounts card.

English Training (English lessons, twice per week).

Training Program (Access to multiple customized training plans according to the needs of each role within the company).

Marriage bonus (The company doubles the allowance established by law that ANSES offers).

Referral Program (Referral bonus is paid when the referral of a collaborator joins the Company).

External Agreements and Discounts.

Vacations: 14 calendar days a year By applying to our role, you are agreeing that your personal data may be used as in set out in EPAM´s Privacy Notice and Policy. EPAM is a leading general provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities.

We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

📌 Lead AI Engineer (Argentina)
🏢 EPAM Systems
📍 Argentina