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AI Engineer (Fluent Portuguese & English)CHUBB • London, United Kingdom
AI Engineer (Fluent Portuguese & English)

AI Engineer (Fluent Portuguese & English)

CHUBB • London, United Kingdom
30+ days ago
Job type
  • Full-time
Job description

AI Engineer (Fluent in Portuguese & English)

Position Overview

We are seeking an AI Engineer to join our Global Analytics team in London. This role is focused on the end-to-end lifecycle of production-grade AI, from training and fine-tuning specialized models to architecting high-performance inference pipelines.

The ideal candidate views AI as a rigorous engineering discipline. Beyond building models, you will be responsible for writing high-quality, maintainable Python code and ensuring that every solution—whether a voice agent or a document processor—is built for reliability, low latency, and global scale.

Key Responsibilities

  • Model Training & Fine-Tuning: Lead the adaptation of Large Language Models (LLMs) for domain-specific tasks using techniques like LoRA, QLoRA, and PEFT to balance performance with resource efficiency.
  • Inference Optimization: Architect and optimize inference pipelines to minimize TTFT (Time to First Token) and maximize throughput. This includes implementing quantization, caching strategies, and efficient batching.
  • Production Engineering: Build and maintain real-time AI pipelines using WebSockets and SSE, ensuring seamless low-latency delivery for voice (ASR/TTS) and text applications.
  • Architecture & MLOps: Deploy and orchestrate models within containerized microservice architectures (Docker/Kubernetes), ensuring robust monitoring, security, and scalability.
  • Collaborative Delivery: Work closely with Business Analysts and internal stakeholders to bridge the gap between commercial requirements and technical implementation.

Technical Requirements

  • Professional Experience: 5+ years in AI/ML engineering with a documented history of moving complex models from research into production.
  • Python Mastery: Deep proficiency in Python. You have a strong commitment to clean coding standards (SOLID/DRY), modular design, and comprehensive unit/integration testing.
  • Generative AI Deep Dive: Hands-on experience with LLM training cycles, parameter-efficient fine-tuning (PEFT), and sophisticated prompt engineering.
  • Inference Stack: Experience with high-performance inference servers (., vLLM, TGI, or Triton) and an understanding of how to optimize models for GPU deployment.
  • Infrastructure: Comfortable working in Linux-based environments and proficient in managing containerized workloads and automated CI/CD pipelines.
  • Advanced RAG: Experience building production-ready Retrieval-Augmented Generation systems, including vector database management and semantic search optimization.

Preferred Qualifications

  • Experience in the insurance or financial services sector.
  • Deep knowledge of GPU architecture, CUDA, and hardware-level performance optimization.
  • Familiarity with Document Intelligence frameworks (OCR, layout analysis, and multimodal extraction).
  • MUST be fluent in Portuguese and English
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AI Engineer (Fluent Portuguese & English) • London, United Kingdom

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