人工智能工程师 – 专家级 II
AI Engineer – Specialist II
#### 公司简介
Serasa Experian 是巴西首家且规模最大的 Datatech 企业。我们是风险分析和机会智能解决方案的领导者，专注于信用旅程、身份验证和欺诈预防。凭借前沿技术、创新和顶尖人才，我们将风险的不确定性转化为最佳决策，帮助人们实现梦想，助力各类企业和行业繁荣发展。
我们在 32 个国家拥有 22,000 名员工，每天都在投资新技术、优秀人才和创新，帮助所有客户最大化每个机会。Experian 总部位于爱尔兰都柏林，在伦敦证券交易所上市（EXPN），是富时100指数的成分股公司。
#### 职位描述
我们正在寻找一名 **AI 工程专家 II**，以加快 **人工智能** 在 **营销服务** 体系中的应用，将 GenAI 的技术深度与具体产品机会、运营效率和业务价值相结合。
该职位将在基于 **LLMs、RAG 和代理** 的解决方案演进中发挥核心作用，支持用例识别、技术方案定义，并将实验性学习转化为对产品、工程和领导层具有行动意义的建议。
我们不仅需要在实验方面有权威的人选，更希望找到有实际经验，能够将 AI 应用于 **加速数字产品策略**、改善用户体验，并以实际影响为导向支持商业决策的人才。
#### 资格要求
主要职责
- 对不同 **LLMs、代理和 GenAI 架构** 在真实业务场景中的应用进行对比实验；
- 设计、优化和演进 **RAG** 流水线，包括分块、嵌入、检索和持续评估策略；
- 构建 GenAI 应用的评估和基准测试框架，考虑质量、相关性、可靠性、成本、延迟和用例适配性；
- 评估 **性能、成本和投资回报率**，支持优先级排序和扩展决策；
- 支持判断何时使用 **提示工程、RAG、微调或多代理架构**，评估技术和商业权衡；
- 与 **产品、工程、数据和管理层** 团队合作，识别 AI 如何加速数字产品策略并拓展价值空间
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#### Company description
Serasa Experian is the first and largest Datatech in Brazil. We are a leader in intelligence solutions for risk analysis and opportunities, focusing on credit journeys, authentication, and fraud prevention. With cutting-edge technology, innovation, and the best talent, we transform the uncertainty of risk into the best decision, helping people achieve their dreams and companies of all sizes and segments to prosper.
We have 22,000 people operating in 32 countries, and every day we are investing in new technologies, talented professionals, and innovation to help all clients maximize every opportunity. Headquartered in Dublin, Ireland, Experian is listed on the London Stock Exchange (EXPN) and is a constituent of the FTSE 100 index.
#### Job description
We are looking for an **AI Engineering Specialist II** to accelerate the adoption of **Artificial Intelligence** within the **Marketing Services** structure, connecting technical depth in GenAI with concrete product opportunities, operational efficiency, and value generation for the BU.
This position will play a central role in the evolution of solutions based on **LLMs, RAG, and agents**, supporting the identification of use cases, the definition of technical approaches, and the translation of experimental learning into actionable recommendations for Product, Engineering, and Leadership.
More than just a reference in experimentation, we are looking for someone with practical experience in applying AI to **accelerate digital product strategies**, improve journeys, and support business decisions with a focus on real impact.
#### Qualifications
Key responsibilities
- Conduct comparative experiments with different **LLMs, agents, and GenAI architectures** applied to real business cases;
- Design, optimize, and evolve **RAG** pipelines, including chunking, embeddings, retrieval, and continuous evaluation strategies;
- Structure evaluation and benchmarking frameworks for GenAI applications, considering quality, relevance, reliability, cost, latency, and adherence to the use case;
- Measure **performance, cost, and ROI** of AI-based solutions, supporting prioritization and scaling decisions;
- Support decisions on when to use **Prompt Engineering, RAG, Fine-Tuning, or multi-agent architectures**, evaluating technical and business trade-offs;
- Partner with **Product, Engineering, Data, and Leadership** teams to identify where AI can accelerate digital product strategies and expand value for the BU;
- Translate technical results into clear recommendations for roadmap, architecture, governance, and capability evolution;
- Contribute to best practices, technical standards, and the responsible use of GenAI within the structure;
- Support the construction of an applied AI vision for Marketing Services, connecting technological trends to the real needs of clients, partners, and products.
**Mandatory requirements**
- 5+ years of experience in **AI Engineering, Machine Learning, Data Science, MLOps**, or related fields;
- Practical experience with **GenAI and LLMs in a real business context;**
- Experience in the design, evaluation, and evolution of solutions with **RAG, embeddings, retrieval, and/or agents;**
- Experience in initiatives that connected AI to **digital product, operational efficiency, automation, or journey acceleration;**
- Advanced proficiency in **Python;**
- Solid knowledge of **SQL** and handling large volumes of data;
- Consistent foundation in **statistics, data analysis, and experimentation;**
- Experience with evaluating generative models, including traditional metrics and **LLM-based** approaches;
- Familiarity with LLM frameworks and ecosystems, such as **OpenAI SDK, LangChain, CrewAI**, or equivalents;
- Ability to document trade-offs and transform technical conclusions into actionable recommendations.
**Preferred qualifications**
- Experience in accelerating AI adoption within a **Business Unit**, connecting technology to strategy and execution;
- Experience with **digital products**, personalization, automation, Martech, or growth-oriented journeys;
- Experience with **Fine-Tuning, Transfer Learning, Hugging Face, PyTorch, or TensorFlow;**
- Familiarity with **AWS Bedrock Agents / AWS Agent Core;**
- Experience with automation and orchestration of GenAI flows, using **n8n, Flowise, LangFlow**, or equivalents;
- Experience with **Prompt Optimization**, including DSPy or similar approaches;
- Ability to navigate well between technical exploration and executive prioritization.
**Expected competencies**
- Analytical thinking and strong evidence-based orientation;
- Ability to handle ambiguity and transform exploration into practical direction;
- Clear communication for both technical and non-technical audiences;
- Autonomy, sense of ownership, and technical responsibility;
- Strong collaboration with multidisciplinary teams;
- Continuous curiosity and critical reading to separate hype from real value;
- Ability to connect technical depth with business impact.
**Expected scope for Specialist II**
- Relevant influence on GenAI architecture and strategy decisions;
- Acting as a technical reference for initiatives applied to the BU;
- Active role in accelerating the AI adoption curve in Marketing Services;
- Ability to connect technical excellence with product and business direction.
**What should differentiate this profile**
We are looking for someone who combines **technical excellence in GenAI** with an **applied business vision**, and who can transform AI capabilities into concrete initiatives for products, journeys, and strategic priorities of Marketing Services.
**Qualifications**
- Practical experience with GenAI and LLMs in a real business context;
- Experience in applying AI to accelerate digital products and journeys;
- Experience with RAG, embeddings, retrieval, and solution evaluation;
- Ability to connect technical decisions with business impact, cost, and ROI;
- Proficiency in Python, SQL, and data analysis/experimentation;
- Ability to translate technical topics for stakeholders.
#### Additional information
Serasa Experian is much more than you imagine. With the purpose of creating a better future by expanding opportunities for people and companies, in Brazil we are more than 4,000 people working in diverse teams and specialties. Here, each knowledge and diversity complements each other and you can work on what you love most. We are committed to building an inclusive culture and an environment in which people can balance their careers with their personal commitments and interests, valuing well-being.
We are dedicated to being one of the best and most innovative companies to work for in the country, enabling incredible experiences and careers for our people. Our strong people-first approach is recognized externally through various market certifications: we have been awarded by Great Place To Work™ in 24 countries and by the international Top Employers certification, in addition to being recognized as one of the best companies for young professionals and having a 4.6 rating on Glassdoor. Each recognition indicates that we are on the right path, providing an increasingly better work environment for our talent.
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