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Senior Data Scientist

Data ScientistData ScientistContractRemoteSeniorTeam 51-200Since 2005H1B No SponsorCompany SiteLinkedIn

Location

Brazil

Posted

74 days ago

Salary

0

Seniority

Senior

Bachelor DegreePortugueseAWSPandasPythonPyTorchScikit-LearnSQL

Job Description

Senior Data Scientist

B2

• Develop and lead machine learning and generative AI solutions • Design and implement applications using LLMs and agent-based architectures • Translate business problems into scalable analytical and AI solutions • Build and validate statistical and machine learning models • Apply advanced feature engineering techniques • Develop data pipelines in partnership with engineering • Implement RAG strategies and tool orchestration • Evaluate, monitor, and optimize model and LLM performance • Ensure quality, reliability, and continuous improvement of solutions • Work with multiple models, balancing cost and performance • Collaborate with engineering, data, and product teams • Communicate results and insights clearly to stakeholders.

Job Requirements

  • Applied statistics and inference
  • Supervised and unsupervised machine learning models
  • Advanced feature engineering
  • Model evaluation and validation
  • Advanced prompt engineering
  • Retrieval-Augmented Generation (RAG)
  • Agent architecture and development
  • Tool orchestration in AI workflows
  • Evaluation and improvement of LLM responses
  • Experience with LLMs (OpenAI, Claude, Llama, Bedrock)
  • Multi-model strategies focused on performance and cost
  • Advanced Python for analysis and model development
  • Libraries such as Pandas, Polars
  • ML frameworks (scikit-learn, PyTorch or similar)
  • Advanced SQL for data manipulation
  • Consumption of data from Data Lakes
  • Integration with data pipelines
  • Experience with AWS (S3, SageMaker, Bedrock, Glue, Athena)
  • MLOps / LLMOps practices (versioning, monitoring, continuous evaluation)

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