Senior/Lead AI Engineer

EPAM Systems; Brasil; On-site; BRL 300,000 - 520,000; Full time

Job summary

EPAM Systems seeks a Senior/Lead AI Engineer to design, build, and scale end-to-end AI applications, including chatbots, agent workflows, and LLM-driven solutions. You will work directly with clients, drive technical decisions, and deliver production-grade AI systems that create real business impact.

Responsibilities include designing AI/LLM solutions at scale, architecting with agentic frameworks, building data pipelines, and ensuring performance, security, and cost-efficiency.

Qualifications

• 5+ years of AI/ML engineering with production-grade delivery.
• Proficiency in Python/Java/Scala.
• Experience with LLM platforms and agentic frameworks.
• Knowledge of vector databases and retrieval systems.

Responsibilities

• Design and deploy AI/LLM applications at scale (RAG, agentic systems, Q&A platforms).
• Architect solutions using agentic frameworks, integrating vector databases and memory architectures.
• Build APIs, data pipelines, and enterprise integrations (CRM, ERP, cloud platforms).
• Evaluate AI performance using LLM-based evaluation, agent metrics, and A/B testing.
• Ensure performance, security, observability, and cost-efficiency across deployed solutions.
• Conduct research, rapid prototyping, and experimentation to validate feasibility and business value.

Skills

AI/ML engineering

Python

Java

Communication

Independent work

Leadership

Tools

LangChain

Pinecone

FAISS

OpenAI

Azure OpenAI

Job description

We are looking for a Senior/Lead AI Engineer to design, build, and scale end-to-end AI applications — including chatbots, agent workflows, and LLM-driven solutions. You will work directly with clients, drive technical decisions, and deliver production-grade AI systems that create real business impact.

Responsibilities

• Design and deploy AI/LLM applications at scale (RAG, agentic systems, Q&A platforms)
• Architect solutions using agentic frameworks, integrating with vector databases and advanced memory architectures
• Build APIs, data pipelines, and enterprise integrations (CRM, ERP, cloud platforms)
• Evaluate and refine AI performance using LLM-based evaluation, agent metrics, and A/B testing
• Ensure performance, security, observability, and cost-efficiency across deployed solutions
• Conduct research, rapid prototyping, and experimentation to validate feasibility and business value
• Stay current with emerging AI protocols (MCP, A2A, ACP) and evolving LLM technologies

Requirements

• 5+ years in AI/ML engineering with production-grade delivery experience
• Strong Proficiency in at least one modern programming language and web frameworks (Python, Java, Scala)
• Hands-on experience with major LLM platforms, agentic frameworks, and advanced integration patterns (RAG, agent orchestration, tool calling)
• Experience with vector databases, semantic/hybrid search, and retrieval/ranking systems
• Knowledge of MLOps/AIOps practices, monitoring, and security (including prompt injection prevention)
• Strong communication skills — able to translate complex AI concepts for both technical and non-technical audiences
• Ability to work independently, lead technical initiatives, and collaborate with cross-functional teams

Technologies

• Languages: Python, Java, C#, Go
• Web Frameworks: FastAPI, Streamlit, Gradio, Flask, Spring Boot, ASP.NET
• LLM Platforms: OpenAI, Anthropic, Amazon Bedrock, Gemini
• Agentic Frameworks: LangChain, LangGraph, Semantic Kernel, LlamaIndex, Strands Agents
• Vector Databases: Qdrant, FAISS, Chroma, Pinecone, Weaviate
• Cloud AI Platforms: Azure OpenAI, Amazon Bedrock, GCP Vertex AI
• Enterprise AI: AWS AgentCore, Databricks AgentBricks, Google Agents Space, Azure AI Foundry
• On-Premise: vLLM
• Protocols: MCP, A2A, ACP
• MLOps/AIOps, observability, and security/guardrail tools for AI applications

EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.