Looking for a job

Roger William Tchegui

@rogerwilliamtchegui

Message

I am a data scientist delivering scalable analytics and actionable business insights.

United States

Message

What I'm looking for

I seek a data-driven role where I can build end-to-end analytics and ML pipelines, collaborate cross-functionally, and deliver scalable insights in healthcare, finance, or regulatory domains while applying cloud and BI technologies.

I am a results-driven Data Scientist / Data Analyst with over five years of experience in machine learning, predictive modeling, data architecture, and visualization. I have designed, developed, and deployed computationally complex data solutions across healthcare, finance, and regulatory reporting to deliver high-quality, actionable insights.

At Mantech and prior roles at United Health Group, Bloom Energy, and Cisco, I built end-to-end pipelines, optimized processing (for example reducing pipeline time from 4 hours to 45 minutes), and implemented Salesforce automations that cut manual entry by 45% while improving lead-to-opportunity conversion. I am proficient in Python, R, SQL, AWS (S3, EMR), Hadoop ecosystem, Tableau and Power BI, and I collaborate cross-functionally to translate business requirements into dashboards, models, and measurable outcomes.

Experience

Work history, roles, and key accomplishments

Current

Data Analyst

Current

ManTech

Jul 2024 - Present (1 year 1 month)

Led end-to-end data analytics and pipeline optimizations, reducing processing time from 4 hours to 45 minutes (≈40% efficiency gain) and automating Salesforce processes to cut manual data entry by 45% while improving lead-to-opportunity conversion by 30%.

Python Apache Spark AWS S3 EMR SQL Tableau ETL Salesforce Shell Scripting Data Engineering

Data Analyst

UnitedHealth Group

Sep 2022 - Jun 2024 (1 year 9 months)

Developed backend modules and automated data pipelines supporting a financial platform with 200K+ daily active users. Performed ETL and text analytics on EHR and claims data to improve data quality, reporting, and stakeholder decision-making.

Python SQL R ETL Tableau

Data Analyst

Bloom Energy

May 2022 - Aug 2022 (3 months)

Developed automated ETL pipelines and web-based data capture tools to streamline data collection and reduce manual effort, and created SSAS/SSRS reports and statistical analyses to inform strategic business decisions.

Python Django ETL Informatica SSAS SQL Git Statistical Analysis

Data Analyst

Cisco Systems

Jan 2020 - Apr 2022 (2 years 3 months)

Automated data processing with Python and SQL, reducing manual reporting time by 40% and accelerating pipeline delivery by 35%; developed Power BI dashboards that improved stakeholder insights by 25% and optimized PL/SQL queries to cut runtimes from 120s to under 10s.