Senior Machine Learning Engineer

3 weeks ago

Melbourne, Victoria, Australia Block Full time

Join to apply for the Senior Machine Learning Engineer role at Block

Join to apply for the Senior Machine Learning Engineer role at Block

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Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams — People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more — provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.

The Role

We are looking for a Senior Machine Learning Engineer to join the Machine Learning Features team within Block's Machine Learning Platform. This team is responsible for developing and maintaining the systems that compute and serve millions of ML features every day, powering Machine Learning models across Block.

As a senior engineer, you will help scale our high-demand ML feature pipelines and services to meet the needs of teams across Cash App, Square, Afterpay, and more. You will also contribute to the design and development of a groundbreaking new ML feature system, aimed at redefining how Machine Learning features are computed and delivered at scale.

You Will

  • Own and maintain mission-critical ML feature computation and serving systems that support millions of daily feature requests
  • Design and build the next-generation ML feature platform to enable faster iteration and higher-quality ML models across Block
  • Partner closely with Data Scientists, ML Modelers and Software Engineers to deliver reliable, performant, and scalable systems
  • Drive architectural decisions, system reliability improvements, and infrastructure automation
  • Mentor and guide other engineers on best practices in large-scale distributed systems, feature engineering, and ML infrastructure
  • Champion engineering excellence through code reviews, technical documentation, and continuous improvement

You Have
  • 5+ years of experience in software engineering, with at least 3+ in large-scale data or ML infrastructure
  • Strong proficiency in programming languages such as Java, Python, Kotlin or Go
  • Experience building and operating distributed data systems at scale (e.g., Spark, Flink, Kafka, Databricks, Snowflake)
  • Proven ability to design for high performance, scalability, and reliability
  • Deep knowledge of cloud infrastructure (AWS, GCP) and containerized systems (Kubernetes, Docker)
  • Strong collaboration skills and ability to work cross-functionally with ML practitioners and infrastructure engineers
  • Experience mentoring junior engineers and driving technical direction on complex projects

Nice to have
  • Familiarity with ML workflows, platforms, and systems
  • Experience building or maintaining ML batch or real-time feature systems
  • Background in MLOps, experimentation platforms, or ML observability

Use of AI in Our Hiring Process

We may use automated AI tools to evaluate job applications for efficiency and consistency. These tools comply with local regulations, including bias audits, and we handle all personal data in accordance with state and local privacy laws.

Contact us at privacy@block.xyz with hiring practice or data usage questions.

Every benefit we offer is designed with one goal: empowering you to do the best work of your career while building the life you want. Remote work, medical insurance, flexible time off, retirement savings plans, and modern family planning are just some of our offering. Check out our other benefits at Block.

Block, Inc. (NYSE: XYZ) builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the easy way to spend, send, and store money. Afterpay is transforming the way customers manage their spending over time. TIDAL is a music platform that empowers artists to thrive as entrepreneurs. Bitkey is a simple self-custody wallet built for bitcoin. Proto is a suite of bitcoin mining products and services. Together, we're helping build a financial system that is open to everyone.

Privacy PolicySeniority level
  • Seniority levelMid-Senior level
Employment type
  • Employment typeFull-time
Job function
  • Job functionEngineering and Information Technology

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