Senior Technical Lead

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📍 Big Stone, United States

About this role

Job Summary

Data Scientist/LLM Specialist with 10 years of experience in leveraging Large Language Models, Data Science, and 
Analytics. Expertise spans across Machine Learning, Deep Learning, Data Mining, and Statistical Analysis, with a proven 
track record in deriving actionable insights and driving data-driven solutions.
• Expertise in transforming business requirements into analytical models, designing algorithms, building models, 
developing data mining and reporting solutions that scales across the massive volume.
• Involved in the entire data science project life cycle and actively involved in all the phases including data extraction, 
data cleaning, statistical modeling, and data visualization with large data sets of structured and unstructured data.
• Extensive experience in fine-tuning, and deploying Large Language Models (LLMs), leveraging state-of-the-art 
architectures and frameworks. Expertise spans across retrieval-augmented generation (RAG), LangChain, LangGraph, 
LlamaIndex, and GraphRAG, integrating vector databases and knowledge retrieval systems.
• Experienced in Data Integration, Validation, and Data Quality controls for ETL process.
• Experience in implementing data analysis with various analytic tools, such as Python, Jupyter Notebook, Tableau, R.
• Strong skills in Linear algebra, Probability theory, and Calculus.
• Strong skills in statistical methodologies such as A/B test, experiment design, hypothesis test, Factor Analysis, ANOVA,
normal distribution, and other advanced statistical and econometric techniques.
• Experienced in Python to manipulate data for data loading and extraction and worked with python libraries like NumPy, 
Pandas, Matplotlib, Scikit-Learn, and SciPy for data analysis.
• Proficient in Tableau, Power BI, matplotlib, Seaborn, Folium, D3.js, and ggplot2 data visualization tools to analyze and 
obtain insights into large datasets, create visually powerful and actionable interactive reports & dashboards

Key Responsibilities

Data Scientist/LLM Specialist with 10 years of experience in leveraging Large Language Models, Data Science, and 
Analytics. Expertise spans across Machine Learning, Deep Learning, Data Mining, and Statistical Analysis, with a proven 
track record in deriving actionable insights and driving data-driven solutions.
• Expertise in transforming business requirements into analytical models, designing algorithms, building models, 
developing data mining and reporting solutions that scales across the massive volume.
• Involved in the entire data science project life cycle and actively involved in all the phases including data extraction, 
data cleaning, statistical modeling, and data visualization with large data sets of structured and unstructured data.
• Extensive experience in fine-tuning, and deploying Large Language Models (LLMs), leveraging state-of-the-art 
architectures and frameworks. Expertise spans across retrieval-augmented generation (RAG), LangChain, LangGraph, 
LlamaIndex, and GraphRAG, integrating vector databases and knowledge retrieval systems.
• Experienced in Data Integration, Validation, and Data Quality controls for ETL process.
• Experience in implementing data analysis with various analytic tools, such as Python, Jupyter Notebook, Tableau, R.
• Strong skills in Linear algebra, Probability theory, and Calculus.
• Strong skills in statistical methodologies such as A/B test, experiment design, hypothesis test, Factor Analysis, ANOVA,
normal distribution, and other advanced statistical and econometric techniques.
• Experienced in Python to manipulate data for data loading and extraction and worked with python libraries like NumPy, 
Pandas, Matplotlib, Scikit-Learn, and SciPy for data analysis.
• Proficient in Tableau, Power BI, matplotlib, Seaborn, Folium, D3.js, and ggplot2 data visualization tools to analyze and 
obtain insights into large datasets, create visually powerful and actionable interactive reports & dashboards

Skill Requirements

Data Scientist/LLM Specialist with 10 years of experience in leveraging Large Language Models, Data Science, and 
Analytics. Expertise spans across Machine Learning, Deep Learning, Data Mining, and Statistical Analysis, with a proven 
track record in deriving actionable insights and driving data-driven solutions.
• Expertise in transforming business requirements into analytical models, designing algorithms, building models, 
developing data mining and reporting solutions that scales across the massive volume.
• Involved in the entire data science project life cycle and actively involved in all the phases including data extraction, 
data cleaning, statistical modeling, and data visualization with large data sets of structured and unstructured data.
• Extensive experience in fine-tuning, and deploying Large Language Models (LLMs), leveraging state-of-the-art 
architectures and frameworks. Expertise spans across retrieval-augmented generation (RAG), LangChain, LangGraph, 
LlamaIndex, and GraphRAG, integrating vector databases and knowledge retrieval systems.
• Experienced in Data Integration, Validation, and Data Quality controls for ETL process.
• Experience in implementing data analysis with various analytic tools, such as Python, Jupyter Notebook, Tableau, R.
• Strong skills in Linear algebra, Probability theory, and Calculus.
• Strong skills in statistical methodologies such as A/B test, experiment design, hypothesis test, Factor Analysis, ANOVA,
normal distribution, and other advanced statistical and econometric techniques.
• Experienced in Python to manipulate data for data loading and extraction and worked with python libraries like NumPy, 
Pandas, Matplotlib, Scikit-Learn, and SciPy for data analysis.
• Proficient in Tableau, Power BI, matplotlib, Seaborn, Folium, D3.js, and ggplot2 data visualization tools to analyze and 
obtain insights into large datasets, create visually powerful and actionable interactive reports & dashboards

Other Requirements

Frequently Asked Questions

Is the salary disclosed for the Senior Technical Lead position at HCLTech?
The salary for this Senior Technical Lead role at HCLTech is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Senior Technical Lead position at HCLTech located?
This Senior Technical Lead role at HCLTech is based in Big Stone, United States. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
How do I apply for the Senior Technical Lead position at HCLTech?
Click the "Apply Now" button on this page. You will be redirected to HCLTech's official application portal hosted on successfactors where you can submit your application directly.
When was the Senior Technical Lead job at HCLTech posted?
This Senior Technical Lead position at HCLTech was posted on Oct 7, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior Technical Lead
HCLTech
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