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# Data Scientist

- **Company:** Optomi LLC
- **Location:** Mundelein, IL, United States
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** A/B Testing, Airflow, Amazon Web Services, Computer Programming, Continuous Integration, Information Engineering, Software Debugging, Python (Programming Language), Machine Learning, Operational Databases, Standard Sql, Software Engineering, SQL Databases, Cloud Platform System, Performance Testing, Snowflake, Apache Spark, Kubernetes, Information Technology, Machine Learning Operations, Code Restructuring, Software Version Control, Data Pipelines, Databricks
- **Published:** October 27, 2026
- **Apply:** https://www.thejobnetwork.com/job/1b490c86-933e-4a37-837b-6fce91198066/data-scientist

## About the Role

* 5+ years of experience in machine learning engineering, data science, statistical modeling, or a related technical field.
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 * Strong hands-on programming experience with Python and SQL, including production data processing and model development.
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 * Experience with statistical analysis and machine learning techniques, particularly time-series forecasting, regression, and anomaly detection. Strong experience in at least two of these areas is preferred.
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 * Experience maintaining, optimizing, and troubleshooting existing production machine learning or statistical models.
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 * Knowledge of forecasting methodologies, predictive modeling, statistical validation, and model performance evaluation.
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 * Familiarity with data pipelines and orchestration technologies such as Airflow, dbt, or comparable tools.
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 * Experience working with cloud-based data platforms such as AWS, Snowflake, Databricks, or Apache Spark.
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 * Bachelor's degree in Computer Science, Mathematics, Statistics, Data Science, Engineering, or another quantitative discipline.
\n, * Experience with causal inference, experimental design, A/B testing, or advanced statistical modeling.
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 * Experience with MLOps, CI/CD pipelines, model versioning, and automated retraining.
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 * Master's degree in a quantitative or technical discipline.
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## Description

* We are seeking a Senior Software Engineer with a strong background in machine learning, statistical modeling, and production model maintenance. This role focuses on maintaining, optimizing, and automating an existing forecasting model that supports business decisions across multiple markets.
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 * The ideal candidate combines hands-on software engineering skills with a strong understanding of statistical techniques, particularly time-series forecasting, regression, and anomaly detection. This position requires someone comfortable working with existing model code, troubleshooting performance issues, validating model accuracy, and implementing recurring updates rather than primarily developing new models from scratch.
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 * Own the ongoing maintenance, optimization, and reliability of an existing production forecasting model.
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 * Perform recurring monthly model updates, including data refreshes, performance validation, troubleshooting, and deployment.
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 * Evaluate forecasting accuracy and statistical performance, identifying opportunities to improve model outputs.
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 * Apply regression, anomaly detection, time-series analysis, and other statistical techniques to investigate model behavior and performance.
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 * Review, debug, refactor, and optimize existing Python and SQL code supporting production models.
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 * Implement automated workflows to improve model refresh processes, reliability, and operational efficiency.
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 * Monitor model performance, detect data drift or unexpected results, and investigate underlying issues.
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 * Partner with data engineering teams to troubleshoot upstream data quality problems and maintain reliable model inputs.
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 * Support the expansion and adaptation of existing models across additional international markets.
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 * Collaborate with technical and business stakeholders to ensure model outputs remain accurate, consistent, and actionable.
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 * Document model changes, validation results, operational processes, and ongoing improvements.
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