Postúlate en Kit Empleo: kitempleo.com.ar/empleo/pxom2

We are building secure, scalable AI-driven API services in our AI Pods team, using LLM orchestration to connect language models with internal systems and tools.
As a Lead Backend Developer, you will own API contracts and reliability while engineering evaluation, observability, fallbacks, and cost-aware patterns for distributed services.
Join us and apply now.
Responsibilities
Design and implement backend API services paired with LLM orchestration layers
Build and maintain advanced RAG pipelines including document ingestion, chunking, embedding, and retrieval tuning
Develop and integrate agent tools with LangChain, LangGraph and potentially MCP (Model Context Protocol)
Enforce security, privacy, enterprise-grade observability, and test coverage across backend workflows
Lead architecture decisions and uphold engineering standards within the pod
Collaborate with frontend engineers, data engineers and infrastructure teams to deliver end-to-end capabilities
Own API contracts and service reliability, ensuring graceful handling of AI edge cases and failures
Provide stable, reusable orchestration frameworks and logic intended for downstream developer use
Requirements
Proven backend engineering experience (5+ years) focused on microservices and distributed systems
Hands-on Python experience (3+ years) building high-performance backend services and cloud-native APIs
Expert-level knowledge of AWS,



Docker and ECS/EKS in production environments
Solid experience designing and delivering RESTful API services
Strong understanding of secure coding practices with dependable auth/authz fundamentals
Nice to have
2+ years of production experience with AI SDKs such as OpenAI, Anthropic/Claude or AWS Bedrock
Exposure to vector stores (Amazon Kendra, OpenSearch) plus embedding strategies and retrieval systems
Practical experience delivering solutions with agentic frameworks like LlamaIndex
Hands-on use of AI evaluation tooling or real-time APM platforms such as LangSmith, Langfuse, Arize
2+ years building React and TypeScript features alongside large-scale EKS deployments
Familiarity with agent interoperability patterns (MCP), identity/security domains (IAM, CIAM) and additional languages such as Java, Node.js or Go
We offer
International projects with top brands
Work with integral teams of highly skilled, diverse peers
Employee financial programs
Paid time off and sick leave
Upskilling, reskilling and certification courses
Unlimited access to the LinkedIn Learning library and 22,000+ courses
Global career opportunities
Volunteer and community involvement opportunities
EPAM Employee Groups
Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn
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Postúlate en Kit Empleo: kitempleo.com.ar/empleo/pxom2

📌 Lead Backend Developer (Mercedes)
🏢 EPAM Systems
📍 Mercedes