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# Machine Learning Engineer (Modeling) - Support AI Tooling

- **Company:** Block, Inc.
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Amazon Web Services, Data Analysis, Data Structures, Information Retrieval, Python (Programming Language), Machine Learning, Natural Language Processing, NumPy, Tensorflow, Google Cloud, Pytorch, Large Language Models, Snowflake, Deep Learning, Generative AI, Keras, Pandas, Scikit Learn, Information Technology, Databricks
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25303_f049f6e351debebff2e98974aea39676

## About the Role

You have:

 * Must be based in Pacific OR Mountain Time Zone
 * Bachelor's degree in Computer Science, Statistics, Mathematics, or a related field. A Master's degree is preferred
 * 5+ years of experience in machine learning, data analysis, or a related field
 * Proven experience in Deep Learning, Natural Language Processing, Large Language Models, Search & Recommendation
 * Strong knowledge of machine learning algorithms and data analysis techniques
 * Proficiency in programming languages such as Python or Java
 * Excellent problem-solving skills and attention to detail
 * Strong communication skills, with the ability to explain complex concepts to non-technical stakeholders

Technologies we use and teach

 * Python (NumPy, Pandas, sklearn, TensorFlow, PyTorch, keras, etc.)
 * Snowflake, DataBricks, GCP, AWS
 * Classical classification / regression models

## Description

We aim to create better-than-human Customer Support Experiences by providing our support advocates real-time intelligent assistant empowered by Gen AI models. Cash App holds people's money, and building customers' trust is absolutely essential to our brand. Our team builds this trust by providing fast and reliable help whenever the customer needs through our advocates.

You will:

 * Experiment with state-of-the-art algorithms to improve knowledge retrieval and search efficiency
 * Develop Natural Language Processing and Gen AI models to improve effectiveness of customer support
 * Use large language models to suggest responding messages to customer support advocates in real time
 * Create data features and embeddings from various data structures, (text/non-text, batch/streaming)
 * Collaborate with cross-functional teams to understand business needs and develop impactful solutions
 * Create both batch and realtime models training and deployment designs
 * Continuously monitor and evaluate the performance of machine learning models, making adjustments as necessary
 * Prepare and present reports on model performance and trends to stakeholders