Senior AI Engineer at FIVE19 Creative

São Paulo, São Paulo, Brazil -

Full Time

Start Date

Immediate

Expiry Date

18 Dec, 25

Salary

0.0

Posted On

19 Sep, 25

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Python, LangChain, LangGraph, Docker, Kubernetes, Graph Databases, PostgreSQL, OpenAI APIs, GPT-4, LLMCompiler, ReAct, Adaptive RAG, GraphRAG Architectures, Vector DBs, Production Engineering, Evaluation

Industry

Software Development

Description

We’re looking for a Senior AI Engineer with deep hands-on experience in LLM application development, particularly using LangChain and LangGraph. You’ll play a key role in architecting and implementing AI-driven features that power insights, recommendations, and user experiences across our platform. This is an opportunity to join a nimble, fast-moving team where your contributions will have an immediate impact on product direction and company growth. You will work on a people analytics platform and a private executive network for HR leaders. The product is live, scaling quickly, and already delivering value to a growing community of executives. The team moves fast, collaborates closely across design and product, and takes pride in writing high-quality code with smart, scalable architecture. Responsibilities Design, build, and scale LLM-powered applications using LangChain and LangGraph. Collaborate with product managers, designers, and engineers to define AI-driven features. Ensure code quality, maintainability, and performance in production systems. Prototype quickly while also building for long-term scalability. Stay on top of emerging AI frameworks, techniques, and best practices. Key Technologies Python LangChain, LlamaIndex, DeepEval Docker, Kubernetes Graph Databases (Memgraph, Neo4j) PostgreSQL OpenAI APIs, GPT-4 LLMCompiler, ReAct, Adaptive RAG, GraphRAG Architectures Python (must-have), 3+ years production ML/AI experience Strong LangChain & LangGraph expertise (LCEL, workflows, multi-agent systems, agent patterns like ReACT/plan-and-solve, RAG, advanced retrieval strategies) Vector DBs (Pinecone, Weaviate, ChromaDB), chunking strategies Production engineering: Pydantic models, JSON schema, streaming, error handling, performance optimization Evaluation: LangSmith, pass@k, BLEU/ROUGE, observability Bonus: Experience with complex agent orchestration/state machines, agentic RAG, human-in-the-loop, map-reduce patterns, custom evaluation datasets Your pick when it comes to employment models: CLT/PJ/Cooperativa; We provide resources for you to grow and learn on the job, including online courses, mentoring, and the latest gen laptops; A fully remote work environment with flexible working hours; Bonus for any referrals that we end up hiring;

Responsibilities

Design, build, and scale LLM-powered applications using LangChain and LangGraph. Collaborate with product managers, designers, and engineers to define AI-driven features.