Company Description

Vichara is a Financial Services focused products and services firm headquartered in NY and building systems for some of the largest i-banks and hedge funds in the world.

Job Description

Key Responsibilities

Architecture & System Design

- Architect, design, and lead multi-agent LLM systems using LangGraph, LangChain, and Promptfoo for prompt lifecycle management and benchmarking.

- Build Retrieval-Augmented Generation (RAG) pipelines leveraging hybrid vector search (dense + keyword) using LanceDB, Pinecone, or Elasticsearch.

- Define system workflows for summarization, query routing, retrieval, and response generation, ensuring minimal latency and high precision.

- Develop RAG evaluation frameworks combining retrieval precision/recall, hallucination detection, and latency metrics — aligned with analyst and business use cases.

AI Model Integration & Fine-Tuning

- Integrate GPT-4o, PaLM 2, and open-weight models (LLaMA, Mistral) for task-specific contextual Q&A.;

- Fine-tune transformer models (BERT, SentenceTransformers) for document classification, summarization, and sentiment analysis.

- Manage prompt routing and variant testing using Promptfoo or equivalent tools.

Agentic AI & Orchestration

- Implement multi-agent architectures with modular flows — enabling task-specific agents for summarization, retrieval, classification, and reasoning.

- Design fallback and recovery behaviors to ensure robustness in production.

- Employ LangGraph for parallel and stateful agent orchestration, error recovery, and deterministic flow control.

Data Engineering & RAG Infrastructure

- Architect ingestion pipelines for structured and unstructured data — including financial statements, filings, and PDF documents.

- Leverage MongoDB for metadata storage and Redis Streams for async task execution and caching.





- Implement vector-based search and retrieval layers for high-throughput and low-latency AI systems.

Observability & Production Deployment

- Deploy end-to-end AI systems on AWS EKS / Azure Kubernetes Service, integrated with CI/CD pipelines (Azure DevOps).

- Build comprehensive monitoring dashboards using OpenTelemetry and Signoz, tracking latency, retrieval precision, and application health.

- Enforce testing and regression validation using golden datasets and structured assertion checks for all LLM responses.

Cross-functional Collaboration

- Collaborate with DevOps, MLOps, and application development teams to integrate AI APIs with React / FastAPI-based user interfaces.

- Work with business analysts to translate credit, compliance, and customer-support requirements into actionable AI agent workflows.

- Mentor a small team of GenAI developers and data engineers in RAG, embeddings, and orchestration techniques.

Qualifications

- Experience:
- 5+ years as an AI or ML Engineer

- Required Skills & Experience

- LLMs & GenAI: GPT-4o, PaLM 2, LangGraph, LangChain, Promptfoo, SentenceTransformers

- RAG Frameworks: LanceDB, Pinecone, ElasticSearch, FAISS, MongoDB

- Agentic AI: LangGraph multi-agent orchestration, routing logic, task decomposition

- Fine-Tuning: BERT / domain-specific transformer tuning, evaluation framework design

- Infra & MLOps: FastAPI, Docker, Kubernetes (EKS/AKS), Redis Streams, Azure DevOps CI/CD

- Monitoring: OpenTelemetry, Signoz, Prometheus

- Languages & Tools: Python, SQL, REST APIs, Git, Pandas, NumPy

- Nice-to-Have Skills

- Knowledge of Reranker-based retrieval (MiniLM / CrossEncoder)

- Familiarity with Prompt evaluation and scoring (BLEU, ROUGE, Faithfulness)

- Domain exposure to Credit Risk, Banking, and Investment Analytics

- Experience with RAG benchmark automation and model evaluation dashboards

Additional Information

📌 AI Software Engineer (Colombia)
🏢 Vichara
📍 Colombia