Brazil - Remote: Full Stack AI Developer

Halliburton; Rio de Janeiro; Remote; BRL 180,000 - 360,000; Full time

Job summary

Halliburton Energy Services is seeking a mid- to senior-level developer to build autonomous AI systems and agent-based platforms. You will tackle ingestion, intelligence, and context challenges, integrating data pipelines with knowledge graphs and AI tools.

The role emphasizes performance, reliability, and collaboration with engineering teams. You will design stateful agents, deploy graph-based RAG pipelines, and create low-latency services using FastAPI, while also delivering a React UI for

Qualifications

• 5+ years of Python backend development experience.
• 2+ years of frontend experience with React and TypeScript.
• Advanced English communication skills.
• Computer Science fundamentals: data structures and algorithms.
• Strong experience building and documenting REST APIs with FastAPI.
• Practical experience building applications with LLMs, LangGraph, and Vector Databases.

Responsibilities

• Design and deliver Advanced Agentic AI Systems across the full stack from data pipelines to UI.
• Develop low-latency Python services (FastAPI) to serve live data to frontend and AI models.
• Build interactive React-based AI chat assistant and dashboards.
• Deploy stateful autonomous agents that query Knowledge Graphs and execute tools.
• Collaborate with domain experts to align agent behavior with technical constraints.
• Implement safeguards for accuracy, traceability, and reliability of AI outputs.
• Continuously optimize prompting, orchestration, and performance in real-world conditions.

Skills

Problem solving

Modern Python

Full-Stack development

English communication

Data structures & algorithms

Tools

FastAPI

React

TypeScript

LangGraph

Knowledge Graphs

Neo4j

Kafka

Flink

TimescaleDB

Ollama

Job description

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Date: Sep 13, 2026

Location:

Rio de Janeiro, RJ, BR, 291941

We are looking for the right people — people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the world’s largest providers of products and services to the global energy industry.

Job Description:

We are building a platform that merges real-time physics, structured knowledge, and autonomous intelligence. We are looking for developers ready to tackle one (or more) of those challenges:

• Ingestion: Handling massive streams of sensor data with minimal latency.
• Intelligence: Making LLMs deterministic and reliable within robust multi-agent systems.
• Context: Modeling complex ontologies to map thousands of physical assets.

Key Responsibilities:

You will join a high-performance team, contributing to designing and delivering Advanced Agentic AI Systems across the full stack — from data pipelines and knowledge graphs, through agent orchestration, to the interactive UI engineers and analysts use every day.

GenAI & Autonomous Agents

• Build Autonomous Agents: Deploy stateful agents (using LangGraph) that plan tasks, query Knowledge Graphs, and execute tools without hallucinating.
• Advanced RAG: Build Graph-RAG pipelines that combine semantic search with structured knowledge traversal for grounded answers.
• Build agents capable of integrating with engineering tools, simulators, databases, and knowledge sources.
• Collaborate with domain experts to align agent behavior with technical expectations and constraints.
• Implement safeguards to ensure accuracy, traceability, and reliability of AI-generated outputs.
• Continuously optimize prompting, agent orchestration, and performance under real-world conditions.
• High-Performance APIs: Build low-latency Python services (FastAPI) to serve live data to frontend and AI models.
• Rapid Delivery: Adopt a “deliver fast” mentality without compromising code quality, testing, or API design standards.
• Build interactive React-based AI chat assistant including canvas/dashboard views

The Technology Stack

You do not need to be an expert in every single tool, but you must be able to discuss technical trade-offs across the entire stack:

• Frontend: React, Angular 16+, TypeScript, RxJS, Plotly.js.

Knowledge, Skills, and Abilities

Desired Profile

• Problem Solver:You dig into logs to find the root cause of a data spike, a silent failure, or a disconnected node in a graph.
• Modern Pythonista: You are up-to-date with modern Python async patterns and typing, ensuring code is high-performance and maintainable.
• You understand Big O notation and how to optimize code for CPU/memory efficiency.
• Full-Stack Mindset: You move comfortably between backend services, agent orchestration, and frontend UI work, and can reason about trade-offs across the whole stack.

Must Haves:

• GenAI: Practical experience building applications with LLMs, Agentic Frameworks (LangGraph), and Vector Databases.
• 5+ years of experience in Python Backend development.
• 2+ years of experience with modern frontend frameworks (React and/or Angular) and TypeScript.
• Advanced English communication skills.
• Computer Science fundamentals: Data Structures and Algorithms.
• Strong experience building and documenting REST APIs (FastAPI).

Good to Have:

• Agent Evaluation: Experience building eval pipelines for agentic systems (e.g., Lang Smith, Ragas, or custom harnesses) to test task success, groundedness, and hallucination rate.
• Streaming: Proficiency with Streaming Technologies (Kafka, Flink, Spark) and Time-Series Databases (TimescaleDB, InfluxDB).
• Graph: Hands‑on experience with Graph Databases (Neo4j/Cypher), SQL database design, and Hybrid Search strategies.
• Background in Heavy Industry, O&G, or IoT data (MQTT, OPC UA).
• Experience with Local LLMs (Ollama) for privacy‑focused deployments.
• Familiarity with Data Lineage or Metadata management.

Halliburton is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, disability, genetic information, pregnancy, citizenship, marital status, sex/gender, sexual preference/ orientation, gender identity, age, veteran status, national origin, or any other status protected by law or regulation.

Location

Fully remote position.

Requisition Number: 209777
Experience Level: Mid-level, Senior or Principal.
Job Family: Engineering/Science/Technology
Product Service Line: Landmark Software & Services
Full Time / Part Time: Full Time

Compensation Information

Compensation is competitive and commensurate with experience.

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