Front-end Developer

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 Duties** 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: * Complexity: Rendering massive tables and managing strict validation logic for mission\-critical data pipelines. * Interactivity: Building conversational UIs (streaming chat) and high\-performance time\-series dashboards that update in real\-time. * Visualization: Designing intuitive interfaces for Data Lineage, Knowledge Graphs, and Entity Mapping. **What You’ll Do** You will join a high\-performance team, ensuring design consistency across the platform while focusing on one of the following distinct tracks: **Core Responsibilities** * Component Architecture: Create a reusable, strictly typed Angular component library that scales across AI, Dashboard, and Admin modules. * Performance: Optimize change detection strategies and virtual scrolling to ensure the UI remains responsive and performant, whether rendering a live data stream or a 3D object. * Data\-Driven Design: Handle complex JSON schemas and heavy payloads, ensuring data precision from API to UI Possible paths to work on the Project (you can contribute to one or more): **Data Platform \& Management Tools** * Build Management Interfaces: Develop the "Control Room" for Data Engineers, including Data Catalog and Pipeline Configuration screens. * Heuristics \& Mapping: Create efficient workflows for "Entity Matching" that allow users to visually map raw sensor tags to physical assets. * Visualizing Lineage: Implement DAG visualizations (D3\.js or similar) to allow users to trace data asset layers and dependencies. **AI Interfaces \& Visualization** * Build AI Assistant UI: Develop rich conversational interfaces that support streaming responses (SSE), markdown rendering, and interactive "artifacts". * Advanced Dashboarding: Implement high\-performance time\-series charts using Plotly.js, ensuring smooth zooming/panning on large datasets. * Document Handling: Develop integrated viewers for PDF documents and rich media, allowing Agents to cite sources visually. **The Technology Stack** We use a modern, high\-performance stack. You should be proficient in the Core and deeply knowledgeable in your chosen track. * Core Framework: Angular 16\+ (Expert level), TypeScript, RxJS. * State Management: NgRx or Signals. * Visualization: Plotly.js (Time\-series), D3\.js/DAGs (Lineage). * API Integration: REST APIs (FastAPI), Server\-Sent Events (SSE), WebSockets (using Socket.io) **Qualifications** * Component Architect: You write clean, decoupled components and understand how to build a UI kit that scales. * UX Sensibility: You understand that a "Chat" interface needs to feel immediate and care about loading states and smooth transitions. * You take pride in building tools that make other engineers productive, caring deeply about workflow efficiency and keyboard shortcuts. **Must Haves** **Knowledge, Skills, and Abilities** * 5\+ years of experience in Frontend Development (Angular focus). * Strong proficiency in TypeScript and reactive programming patterns. * Experience building Admin Dashboards, B2B SaaS interfaces, or complex SPAs. * Ability to handle complex API integrations and data modeling on the client side. * Advanced English communication skills **Good To Have** * Visualization: Hands\-on experience with Plotly.js, D3\.js, or Lineage/DAG graphs. * AI/Chat: Experience building Chat/LLM interfaces and handling streaming text. * Data Heavy: Familiarity with high\-performance libraries and virtual scrolling. * Media/Geo: Experience with PDF rendering in\-browser or Map/GIS libraries (Leaflet, Mapbox). **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** Rua Paulo Emidio Barbosa 485 Q, Rio de Janeiro, Rio de Janeiro, 291941, Brazil **Job Details** **Requisition Number:** 205557 **Experience Level:** Entry\-Level **Job Family:** Engineering/Science/Technology **Product Service Line:** Landmark Software \& Services **Full Time / Part Time:** Full Time **Additional Locations for this position:** **Compensation Information** Compensation is competitive and commensurate with experience.