PayPal Sr Machine Learning Engineer 

Ireland, Dublin 

428378718

What You’ll Do

• Design and develop internal-facing AI tools that help analysts explore data, generate SQL, detect anomalies, and summarize trends.
• Develop and maintain backend services and APIs to support AI and data workflows
• Query and profile data across multiple sources (BigQuery, logs, etc.) and ensure reliable, fast access for tools.
• Collaborate closely with analysts and stakeholders to deeply understand their workflows and build what matters most.
• Integrate LLMs (e.g., OpenAI, open-source models) for natural language interfaces, auto-insights, or content summarization.
• Build intuitive UIs or work with frontend engineers to create React-based apps.
• Ensure security and compliance with internal access controls, logging, and audit standards.
• Prototype, test, and iterate quickly based on feedback and evolving needs.

Must-Have Skills

• Bachelor’s or Master’s in Computer Science, Statistics, Engineering, or related field; 3+ years of experience in machine learning
• Strong programming skills in Python , with experience using data and ML libraries (pandas, scikit-learn, etc.).
• Proficiency in SQL and data querying from cloud data warehouses. Ensure data quality and integrity in all processes.
• Experience with building backend APIs (FastAPI, Flask) and deploying services.
• Familiarity with LLMs and NLP concepts , and basic prompt engineering.
• Ability to build usable UIs with Streamlit, Dash, or collaborate with frontend teams.
• Strong product sense and empathy for analysts’ workflows and challenges, collaborate with stakeholders to understand requirements.

Nice-to-Have Skills

• Experience in risk or fraud domains big plus
• Experience with LLM applications like Retrieval-Augmented Generation (RAG) or semantic SQL generation.
• Cloud experience (GCP) and containerization (Docker).
• Background in MLOps, data quality monitoring, or internal tooling platforms.
• Experience with tools like Looker, Tableau from a data backend perspective.

Our Benefits:

Any general requests for consideration of your skills, please