# Yachi User

Yachi User is a remote worker on Himalayas, Data Scientist Co-op at Labelmaster, based in United States.

Source: https://himalayas.app/@yachiuser

```text
Data Scientist at Labelmaster who improved demand-forecast WAPE from 46% to 31.5% across 37 backtests.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | United States |
| Authorized to work in | United States |
| Salary expectations | 60k+ USD |
| Job categories | Data Scientist, Machine Learning Engineer |
| Skills | Data Science, Machine Learning, predictive modeling, Time series Forecasting, Churn Analysis, A B Testing, Statistical Experimentation, Hypothesis Testing, Power Analysis, Bayesian Statistics, Propensity Score Matching, Cohort Analysis, Feature Selection, Model Validation, Customer Segmentation |

## About

```text
At Labelmaster, I applied bias correction to demand forecasts, reducing WAPE from 46% to 31.5% across 37 rolling-origin backtests to inform procurement planning. I also screened freight and economic indicators and automated forecast notifications and pipeline monitoring.

At August Infotech, I developed churn models with XGBoost and LightGBM and evaluated retention interventions through an A/B test. My projects include a demand-forecasting and reorder-planning platform, and a UK property-price analysis with 12-month SARIMAX forecasts.
```

## Experience

### Data Scientist Co-op

Labelmaster. Jan 2026 - May 2026

```text
Applied bias correction to demand forecasts, reducing WAPE from 46% to 31.5% across 37 backtests. Screened 174 external indicators and benchmarked LSTM models to recommend forecasting models.
```

Skills: Python, SQL, XGBoost, LightGBM, LSTM, AWS, Amazon-SNS, Cloudwatch, Demand-Forecasting, Model-Evaluation

### Data Scientist

August Infotech. Jan 2024 - Jul 2024

```text
Developed an XGBoost churn-prediction model improving AUC-ROC from 0.68 to 0.81. Collaborated on LightGBM classifier and evaluated retention interventions via A/B test, reducing churn by 10.3% relative.
```

Skills: Python, SQL, XGBoost, LightGBM, A-B-Testing, Churn-Analysis, Feature-Engineering, Model-Evaluation

### Data Scientist Summer Intern

IBM CSRBox. Jun 2023 - Aug 2023

```text
Developed a GBDT multiclass classifier using 24 features to predict 14 career categories with 87% validation accuracy. Collaborated to integrate the model into a career-recommendation application.
```

Skills: Python, GBDT, scikit-learn, AWS, Model-Deployment, Classification

### Machine Learning Intern

Orion Technolabs. Jun 2022 - May 2023

```text
Built a lead-scoring pipeline achieving 84% precision. Segmented 50K+ customer records using RFM and K-Means, and developed a Flask REST API for automated prediction requests.
```

Skills: Python, Machine-Learning, MLP, KMeans-Clustering, RFM-Analysis, Flask, REST-APIs

## Education

### Illinois Institute of Technology

Master of Science, Data Science. Grade: 3.8/4.0

```text
Pursuing a Master of Science in Data Science with a GPA of 3.8/4.0, expected to graduate in May 2026.
```

### Gujarat Technological University

Bachelor of Engineering, Information Technology. Grade: 3.9/4.0

```text
Earned a Bachelor of Engineering in Information Technology with a GPA of 3.9/4.0, graduating in May 2024.
```

## Tech stack

- Tableau
- Amazon EC2
- Amazon CloudWatch
- Amazon S3
- PostgreSQL
- React
- Python
- TensorFlow
- PyTorch
- scikit-learn
- Keras
- Flask
- FastAPI
- Amazon SNS
- Git
- Docker
- SQL
- Amazon SageMaker
- XGBoost
- LightGBM
- DuckDB
- Power BI
- AWS
- REST APIs

To contact Yachi, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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