Langflow Engineer

Description

Job Summary: We are seeking a hands-on GenAI Engineer to develop and optimize generative artificial intelligence solutions, transforming prototypes into scalable production systems. Key Highlights: 1. Development of GenAI agents using frameworks such as LangChain and LlamaIndex 2. End-to-end implementation of RAG pipelines and integration of LLM APIs 3. Building evaluation frameworks and automated tests for GenAI **Company Description** Serasa Experian is Brazil's first and largest Datatech company. As a leader in risk and opportunity intelligence solutions, it focuses on credit, authentication, and fraud prevention journeys. Leveraging cutting-edge technology, innovation, and top talent, Serasa Experian transforms risk uncertainty into the best decisions—helping individuals achieve their dreams and enabling businesses of all sizes and sectors to thrive. We have 22,000 people operating across 32 countries, and every day we invest in new technologies, talented professionals, and innovation to help all our customers maximize every opportunity. With corporate headquarters 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 a hands-on GenAI Engineer who combines software engineering excellence with a passion for Generative Artificial Intelligence. If you enjoy transforming prototypes into scalable solutions, integrating LLMs into real-world pipelines, and ensuring performance and quality in production, this challenge is for you. **What You’ll Do** * Develop GenAI agents using frameworks such as LangChain, LlamaIndex, or equivalents. * Implement end-to-end RAG pipelines (chunking, embedding, retrieval, and generation). * Integrate LLM APIs (OpenAI, Anthropic, Azure OpenAI, Gemini) into enterprise applications. * Create and optimize intelligent prompts for different use-case contexts. * Build evaluation frameworks and automated tests for GenAI agents. * Develop APIs and interfaces for secure and scalable consumption of agents. * Implement observability, logging, and monitoring for production GenAI solutions. * Optimize inference performance and cost using caching and batching techniques. * Collaborate with product and AI squads to deliver GenAI features and integrations. * Document code, APIs, and deployment processes following software engineering best practices. **What We Expect From You** *Required:* * 4+ years of software engineering experience, including at least 1 year in GenAI/LLMs. * Proficiency in Python and data science libraries (pandas, numpy). * Practical experience with LangChain, LlamaIndex, or similar frameworks. * Knowledge of REST APIs, FastAPI/Flask, and microservices architecture. * Experience with Git, CI/CD, and DevOps practices. * Familiarity with vector databases (Pinecone, Weaviate, ChromaDB). * Knowledge of Docker and cloud deployment (AWS and Azure). *Desirable:* * Experience with model fine-tuning (Hugging Face, OpenAI Fine-tuning API). * Knowledge of LLM testing frameworks (LangSmith, Promptfoo). * Experience with asynchronous programming and streaming in Python. * Knowledge of SQL, NoSQL, and data pipelines. * Familiarity with frontend frameworks (React, Vue) for building agent interfaces. * Experience with Kubernetes and container orchestration. **Qualifications** * 4+ years of software engineering experience, including at least 1 year in GenAI/LLMs. Proficiency in Python and data science libraries (pandas, numpy). Practical experience with LangChain, LlamaIndex, or similar frameworks. Knowledge of REST APIs, FastAPI/Flask, and microservices architecture. Experience with Git, CI/CD, and DevOps practices. Familiarity with vector databases (Pinecone, Weaviate, ChromaDB). Knowledge of Docker and cloud deployment (AWS and Azure). **Additional Information** Serasa Experian is much more than you imagine. With a purpose to create a better future by expanding opportunities for individuals and businesses, in Brazil we are over 4,000 people working across diverse teams and specialties. Here, every skill and perspective complements one another—you can work on what you love most. We are committed to building an inclusive culture and an environment where people can balance their careers with personal commitments and interests, prioritizing well-being. We are deeply 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 externally recognized through numerous market certifications: we have been awarded Great Place To Work™ in 24 countries and hold the international Top Employers certification, while also being recognized as one of the best companies for young professionals and maintaining a 4.6 rating on Glassdoor. Each recognition confirms we’re on the right path—creating an ever-better workplace for our talents. Experian Careers \- Creating a better tomorrow together Find out what it’s like to work for Experian by clicking here