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Staff Machine Learning Engineer – Health ML 296 views

The Health ML engineering team is responsible for building scalable detection systems that keep spam, manipulation, and abuse at bay. They use ML and relevance techniques to make Twitter safer and to limit the spread of misinformation on the platform. Their team works across the product to detect abusive and spammy users and content, increase action on bad actors, drive changes in user behavior, and detect and remediate accounts that are violating the terms of service on Twitter.

They develop, maintain, and contribute to several machine learning models and systems, including

  • Models that detect unwanted interactions
  • Models to prioritize human review of accounts violating Twitter’s policies to more quickly take action and limit their damage
  • Detection of bots that misuse the platform or spread misinformation
  • Detection of repeat abusive offenders who create new accounts after being suspended
  • Real-time rule engines and clustering systems to identify and act on clusters of bad actors at scale

What You’ll Do

Although you will work on cutting-edge problems, this position is not a pure research position. You will participate in the engineering life-cycle at Twitter, including designing distributed systems, writing production code and data pipelines, conducting code reviews, and working alongside their infrastructure and reliability teams. You’ll apply data science, machine learning, and/or graph analysis techniques to a variety of modeling and relevance problems involving users, their social graph, their tweets, and their behavior.

Who You Are

You’re a relevance engineer, applied data scientist, or machine-learning engineer who wants to work on exciting algorithmic and deep infrastructure issues to improve the health of the public conversation on Twitter. You’re experienced at solving large scale relevance problems and comfortable doing incremental quality work while building brand new systems to enable future improvements.

  • You are experienced in one or more of the following machine learning (including deep learning), information retrieval, recommendation systems, social network analysis.
  • You are a strong technical advocate with a background in Java, C++, or Scala, and Python.
  • Experience with a number of ML techniques and frameworks, e.g. data discretization, normalization, sampling, linear regression, decision trees, deep neural networks, etc
  • 3+ years experience with one or more DL software frameworks such as Tensorflow, PyTorch, Theano
  • You strive to find the right balance between moving fast to deliver quality improvements to users and accumulating technical debt that drags down productivity.
  • You have a collaborative working style with a strong focus on disciplined execution and results.
  • You like to ground decisions in data and reasoning and solve the root causes of problems rather than surface issues.
  • You are adept at communicating relevant information clearly and concisely.
  • You look ahead to identify opportunities and thrive in a culture of innovation.

Requirements

  • M.S. or Ph.D. in Computer Science or Machine Learning related degree; or equivalent work experience in the field
  • 7+ years experience leading and delivering effective ML solutions for large scale production use cases.


They are committed to an inclusive and diverse Twitter. Twitter is an equal opportunity employer. They do not discriminate based on race, ethnicity, color, ancestry, national origin, religion, sex, sexual orientation, gender identity, age, disability, veteran, genetic information, marital status or any other legally protected status.

     

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