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Contractor: Senior Machine Learning Engineering Services

NewselaArgentina | Brazil | MexicoRemote, Onsite

We are seeking to hire a skilled Contract Sr. Machine Learning Engineer based out of Argentina or Mexico. This role will focus on developing machine learning algorithms, data analysis, and optimizing data pipelines. The ideal contractor should have strong expertise in developing machine learning algorithms, natural language processing (NLP), and experience working with large-scale data systems.

Scope of Services:


  • Develop and implement machine learning algorithms to solve complex problems.
  • Design and maintain data pipelines, including transformations and preprocessing.
  • Develop methods for effective data analysis and insight generation.
  • Create and optimize innovative algorithms for various applications.
  • Conduct data analysis to identify trends and insights.
  • Test hypotheses and validate models through rigorous experimentation.

Skills & Experience:


  • 5+ years of experience as a Machine Learning Engineer
  • Strong experience in NLP, with a focus on using transformers.
  • Proven experience developing machine learning models and algorithms.
  • Experience with Deep Learning in frameworks such as Tensorflow, Keras or Pytorch
  • Experience working with Google Cloud (preferred).
  • Strong Python programming skills.
  • Expertise in SQL for data manipulation and analysis.
  • Experience with LLMs and Prompt Engineering.
  • Experience developing model APIs using Python frameworks such as FastAPI and BentoML (preferred).
  • Experience with search and recommender systems (preferred).
  • Familiarity with AWS services (preferred).

Please note that given the nature of the contract, this role will not be eligible to participate in company-sponsored benefits. 


Life at Newsela

We're a team that is dedicated to unlocking the written word for everyone. Nothing makes us happier than engaged readers. So we've built an Instructional Content Platform that brings together fascinating, accessible content with integrated assessments and insights. We're building a future where vibrant digital reading experiences will supercharge reading engagement and learning in every subject. Launched in 2013, more than 200 million Newsela articles have been read by students, making Newsela the number 1 online news source for students. When students read articles and take Common Core-aligned quizzes online, they are developing the critical nonfiction literacy skills that empower them to take part in conversations about complex issues, and prepare them for academic and professional success. To read more, visit http://www.newsela.com and follow @newsela on Twitter.
Thrive Here & What We Value1. Fun Team2. Virtual GetTogethers and On-Site Events3. CustomerObsessed Team4. Scaling Newsela's Impact on K12 Education5. Culturally Responsive Learning Content6. Teacher Experience Enhancement7. Nationwide Classroom Engagement

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