Senior Backend Developer (La Plata)

We are looking for a Senior Backend Developer to come aboard our AI Pods team and craft dependable AI-powered API services along with agentic workflows. The position is centered on enabling language models to interact with internal systems, vector databases and external tools through orchestration frameworks. You will treat LLMs as building blocks within a secure, scalable distributed environment, taking full ownership of API contracts and service reliability while embedding LLMs via disciplined systems engineering practices spanning evaluation, observability, fallback handling and cost awareness. Responsibilities Architect and develop backend API services along with LLM orchestration layersBuild and sustain sophisticated RAG pipelines covering document ingestion, chunking, embedding and retrieval optimizationCreate and wire up agent tools leveraging LangChain, LangGraph and potentially MCP (Model Context Protocol)Guarantee security, privacy, enterprise-grade observability and test coverage throughout all backend workflowsShape architecture decisions and engineering standards inside the podPartner with frontend engineers, data engineers and infrastructure teamsTake ownership of API contracts and service reliability, ensuring graceful failure of AI edge casesDeliver dependable, reusable orchestration frameworks and logic intended for downstream developer use Requirements 3+ years in backend engineering with a focus on microservices and distributed systems2+ years of Python proficiency applied to high-performance backend services and cloud-native APIsExpertise in AWS, Docker and ECS/EKSBackground in RESTful API developmentKnowledge of secure coding practices together with solid auth/authz fundamentals Nice to have 1–2+ years of practical production usage of AI SDKs including OpenAI, Anthropic/Claude or AWS BedrockFamiliarity with vector stores (Amazon Kendra, OpenSearch) alongside embedding strategies and retrieval systemsDirect experience working with agentic frameworks like LlamaIndexSkills in AI evaluation tooling or real-time APM platforms (LangSmith, Langfuse, Arize)1–2+ years applying React and TypeScript, together with large-scale EKS deploymentsUnderstanding of agent interoperability patterns (MCP), identity/security spaces (IAM, CIAM) plus additional languages like Java, Node.js or Go We offer International projects with top brandsWork with general teams of highly skilled, diverse peersEmployee financial programsPaid time off and sick leaveUpskilling, reskilling and certification coursesUnlimited access to the LinkedIn Learning library and 22,000+ coursesGlobal career opportunitiesVolunteer and community involvement opportunitiesEPAM Employee GroupsAward-winning culture recognized by Glassdoor, Newsweek and LinkedIn #J-*****-Ljbffr Postúlate en Kit Empleo: kitempleo.com.ar/empleo/pxrd5