Senior Engineer, ML Systems

The role / impact You will lead the design and implementation of AI research and production infrastructure at scale, ensuring our systems remain flexible, cost-effective, and robust. By managing technical debt and directing strategies for distributed systems, your technical decisions will directly influence products that serve millions of daily users. Beyond architecture, your impact lies in lifting the technical capability of the entire AI Products team. You will champion engineering excellence, mentor junior engineers, and collaborate across Xero to enhance data usability, ensuring we solve complex technical challenges with the right methods. The Team / How They Connect You will join the AI Products group, a diverse, globally distributed team of scientists, engineers, product managers, and analysts within our broader Data & Science division. Machine Learning Engineers partner closely with Applied Scientists during the research phase to build interfaces and harnesses that safely transition models from research to production. Together, this collaborative team reduces toil and delivers beautiful, data-driven insights for small businesses. The team is currently working on Refactoring complex systems and designing highly scalable, distributed production infrastructure to support next-generation AI featuresHarnessing Python, SQL, and distributed processing engines such as Spark or Dask to handle web-scale data workloadsDeveloping production environments utilizing established AI frameworks, data orchestration tools like Airflow or Prefect, and managing cloud workloads via AWS EMRExploring and applying modern Large Language Model technologies to drive continuous product innovation Where And How You Can Work Xero offers a flexible hybrid working model designed to blend the collaboration of office life with the autonomy of remote work. You will have access to our modern office spaces, with expectations around office days and collaborative 'boost days' aligned to help your team connect and ship great code effectively. Here are some of the things we are looking for You will bring excellent system design and coding proficiency in Python or alternative languages suited for web-scale AI applicationsA deep understanding of distributed processing principles alongside strong SQL capabilities is essential for successYour exceptional communication skills enable you to easily translate complex technical concepts for both business and technical audiencesHaving a natural coaching mindset will allow you to successfully establish engineering standards and mentor junior machine learning colleaguesAn eagerness to learn, master, and implement Large Language Model technologies into product featuresExperience utilizing frameworks like MLFlow, TensorFlow, or PyTorch, combined with knowledge of data orchestration tools, will be highly valued Apply even if your experience isn't a perfect match! At Xero, we hire based on your skills, passion, and the unique perspective you can bring to enhance our culture and team.