Staff Applied Machine Learning Engineer
Block, Inc. is a global financial-technology company building products for economic empowerment across payments, consumer finance, commerce, Bitcoin, music, and AI.
Maintainer signals as of 9/2/2026
Projects
About Block, Inc.
Block, Inc., formerly Square, Inc., operates the Square and Cash App ecosystems and current businesses including Afterpay, TIDAL, Bitkey, Proto, and Spiral. Its current Bitcoin ecosystem includes Cash App Bitcoin services, Bitkey self-custody wallet technology, Proto mining systems, and Spiral open-source Bitcoin initiatives. Block also develops open-source AI and collaboration projects including Goose, Buzz, and Berd.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will build and operate production machine learning systems that transform customer and product context into trusted signals rankings recommendations and decision capabilities. You will design signal contracts own ranking retrieval recommendation search propensity and next best action systems evaluate customer and business impact and partner across product growth data platform risk and compliance functions. You will also use AI assisted engineering tools to accelerate development testing documentation and operations.
Requirements
- 12+ years building and operating production software and machine learning systems
- Deep expertise in ranking retrieval recommendations search personalization lifecycle machine learning customer intelligence propensity churn LTV next best action or model derived risk signals
- Strong production judgment across feature pipelines model serving experimentation monitoring feedback loops online and offline consistency and signal interfaces
- Ability to evaluate trust fairness access risk compliance and long term engagement
- Experience using AI assisted engineering tools with verification testing and review
Responsibilities
- Build and operate production machine learning systems
- Design production data and signal contracts
- Own ranking retrieval recommendation search propensity and next best action systems
- Evaluate customer and business impact including trust fairness access risk compliance and long term engagement
- Translate ambiguous goals into measurable machine learning system designs
- Use AI and agents for development analysis testing documentation and operations
Benefits
- Remote work
- Medical insurance
- Flexible time off
- Retirement savings plans
- Modern family planning
