Senior AI Engineer

Jeeves; Buenos Aires; A distancia; ARS 226.367.000 - 286.732.000; Jornada completa

Descripción de la vacante

Jeeves, a global financial operating system, is seeking a Senior AI Engineer to ship AI-powered features for production use. You will work with backend, data science, and product teams to scale AI in our core financial products.

You will design LLM pipelines, enable retrieval-augmented generation, and ensure safety with validation and monitoring; experience with LangChain, vector databases, and production ML is required.

Formación

• 5+ years of professional software engineering experience, with 3+ years in AI/ML in production.
• Experience deploying LLM-powered applications in production environments.

Responsabilidades

• Design, build, and maintain production-grade LLM integration pipelines (RAG, prompts, parsing, orchestration).
• Develop AI features in Jeeves core products: spend categorization, document extraction, anomaly detection, Q&A, reconciliation.
• Implement structured output validation, fallback handling, and confidence scoring.
• Evaluate AI frameworks/tools (LangChain, LlamaIndex, OpenAI/Anthropic/Cohere) and choose appropriate ones.
• Establish prompt versioning and evaluation practices as models/data evolve.
• Design vector search pipelines (Pinecone, Weaviate, pgvector) for semantic search and RAG features.
• Collaborate with data scientists to move models from experiments to production serving infra.
• Build API contracts, observability, and reliability patterns for AI services.
• Write testable backend code (Python/Go/Node.js) powering AI features.
• Partner with product/engineering to define AI roadmap and best practices.

Conocimientos

AI/ML systems

Python

LLM workflows

RAG pipelines

Vector databases

API design

Educación

Bachelor's degree in CS/Engineering

Herramientas

OpenAI API

Anthropic API

Cohere API

LangChain

LlamaIndex

Pinecone

Weaviate

pgvector

Descripción del empleo

Jeeves is a groundbreaking financial operating system built for global businesses that provides corporate cards, cross-border payments, and spend management software within one unified platform. The company operates across 20+ countries including Brazil, Canada, Colombia, Mexico, the United Kingdom, across Europe, and the United States, and serves over 5,000 clients ranging from venture-backed startups to SMBs around the world. With a mission to empower businesses with more efficient and cost-effective financial solutions worldwide, Jeeves combines cutting-edge financial technology with exceptional team expertise to transform the business financial landscape. Jeeves has been recognized as one of The Information's 50 Most Promising Startups in 2023, as well as a Y Combinator Top Company 2021-2023 and won "Fintech of the Year" at the European Fintech Awards.

Since graduating from Y Combinator in 2020, Jeeves has successfully raised over $380 million and is backed by top world-class investors including Andreessen Horowitz, Y Combinator, CRV, Tencent, Stanford University, Clocktower Ventures, and founders of more than 15 unicorns including David Velez (Nubank), Carlos Garcia (Kavak) and Sebastián Mejía (Rappi).

Jeeves is building AI into the core of its financial platform - from intelligent spend categorization and anomaly detection to LLM-powered workflows that help finance teams move faster. We're looking for a Senior AI Engineer who is obsessed with building AI systems that actually work in production: reliable, observable, cost-efficient, and genuinely useful.

This is not a research role. You will ship AI-powered features that process real financial data for real businesses. You'll work alongside backend engineers, data scientists, and product teams to take AI from prototype to production - and you'll help define how Jeeves builds with AI as the company scales.

If you've built LLM pipelines, designed RAG architectures, operated ML systems in production, and care deeply about what happens when your AI makes a wrong call in a financial context - we want to meet you.

Location

This is a full-time remote position.

What You'll Do

LLM & AI Pipeline Engineering

• Design, build, and maintain production-grade LLM integration pipelines - including retrieval-augmented generation (RAG), prompt engineering, output parsing, and chain orchestration.
• Develop and operate AI features within Jeeves's core financial products: spend categorization, document extraction, anomaly detection, financial Q&A, and automated reconciliation.
• Implement structured output validation, fallback handling, and confidence scoring to ensure AI decisions meet reliability standards for financial use cases.
• Evaluate and integrate AI frameworks and tools (LangChain, LlamaIndex, OpenAI API, Anthropic API, HuggingFace, vector databases) and advocate for the right tool for the job.
• Establish prompt versioning and evaluation practices to ensure AI outputs remain accurate and consistent as models and data evolve.

Retrieval & Vector Search

• Design and maintain vector search pipelines using databases such as Pinecone, Weaviate, or pgvector to power semantic search and RAG-based features.
• Build document ingestion and chunking pipelines for Jeeves's financial data - processing invoices, receipts, policy documents, and transaction records.
• Optimize retrieval quality through embedding model selection, chunk strategy, metadata filtering, and re-ranking techniques.

ML Model Serving & Operations

• Collaborate with data scientists to take trained ML models from experimental notebooks to production serving infrastructure.
• Build and maintain model serving endpoints with appropriate latency SLOs, input validation, and output monitoring.
• Implement model performance monitoring and data drift detection to ensure production models remain accurate over time.
• Support model retraining workflows by designing clean data pipelines and feature engineering that can be continuously updated.

Backend Integration & Reliability

• Integrate AI services cleanly with Jeeves's backend microservices - designing clear API contracts, circuit breakers, and graceful degradation patterns.
• Write high-quality, testable backend code in Python or Go/Node.js to power AI-integrated features.
• Instrument AI components with structured logging, distributed tracing, latency dashboards, and alerting to ensure operational visibility.
• Build human-in-the-loop review workflows for AI decisions that require oversight - particularly for high-value financial actions.

Collaboration & Growth

• Partner with Product, Backend Engineering, and Data Science to define the AI roadmap and translate requirements into reliable systems.
• Contribute to a culture of quality by writing design docs, reviewing peers' AI system designs, and sharing learnings openly.
• Help grow the AI engineering practice at Jeeves by establishing patterns, tooling, and best practices that the broader team can build on.

Requirements

Minimum Requirements

• Bachelor's degree in Computer Science, Engineering, or a related field — or equivalent practical experience.
• 5+ years of professional software engineering experience, with at least 3 years focused on AI/ML systems in production.
• Hands-on experience building and deploying LLM-powered applications using APIs such as OpenAI, Anthropic, or Cohere in a production environment.
• Experience designing and operating RAG pipelines, including chunking strategies, embedding models, and vector database integration (Pinecone, Weaviate, pgvector, or similar).
• Strong proficiency in Python for AI/ML workloads; familiarity with at least one AI orchestration framework (LangChain, LlamaIndex, or equivalent).
• Experience with ML model serving infrastructure: REST or gRPC inference endpoints, input/output validation, latency budgeting, and monitoring.
• Solid backend engineering fundamentals: REST APIs, relational databases (PostgreSQL preferred), async patterns, and cloud infrastructure (AWS, GCP, or Azure).
• Experience with observability tooling: structured logging, distributed tracing, and building dashboards for AI system health.

Preferred Qualifications

• Experience in fintech, financial services, or any regulated industry where AI reliability and auditability are critical.
• Familiarity with prompt evaluation frameworks, A/B testing AI outputs, and tracking model performance degradation in production.
• Experience with ML lifecycle management tools: MLflow, Weights & Biases, Vertex AI, or SageMaker.
• Knowledge of real-time data streaming (Kafka, Kinesis) for event-driven AI pipelines.
• Contributions to open-source AI tooling, published technical writing, or talks at AI/ML conferences.
• Prior startup or scale-up experience — comfortable with ambiguity and building foundational systems from scratch.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.