Mazhar Hossain

Python backend and data engineer building reliable data platforms, ML-ready pipelines & production APIs for analytics and forecasting.

Research & mHealth ML Systems Data Platforms

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Milwaukee, WI Open to collaboration

6+ years

Industry experience

1k+

StackOverflow

200+

Scholar citations

Impact Highlights

Managed pipelines from 500+ data sources
Reduced debugging time by 95% via automated verification
Cut new-source onboarding effort by 60%
Improved incident response time by 35%

GitHub LinkedIn Stack Overflow Google Scholar

Profile

Python backend and data engineer with 6+ years of experience across data pipelines, ML systems & production APIs. Focused on data quality, observability & scalable ingestion frameworks. Research Assistant at Marquette University (mHealth), currently developing ML-enabled mHealth data collection platforms.

Data Integrity Monitoring Prediction Automation

Top Skills

Python & Backend Systems
ETL & Automation
Data Quality & Observability

Years in data & ML engineering

Data sources integrated

Stack Overflow reputation

Google Scholar citations

Scholar

Experience

Research, data engineering & ML-focused roles.

Marquette University Research Assistant

Jan 2026 - Present · Milwaukee, WI

mHealth research, applied ML & data processing for health-focused studies.

Research on mHealth applications and applied ML.
Data processing and analysis for health-focused research studies.

ResearchMLHealthcare

Cefalo Software Engineer → Senior Software Engineer

Sep 2021 - Dec 2025 · Dhaka, Bangladesh

Data platform reliability, 500+ source pipelines & 95% faster debugging via automation.

Built energy market forecasting data products and RESTful backends.
Built RESTful services for urgent market data ingestion.
Managed pipelines from 500+ sources with high integrity and availability.
Automated verification processes, reducing debugging time by 95%.
Redesigned ingestion framework, cutting new-source effort by 60%.
Implemented monitoring for critical sources, reducing response time by 35%.
Contributed to data platform reliability and automation.

PythonETLMonitoringAPIsREST

Upwork Python Developer (Freelance)

Feb 2021 - Dec 2022 · Remote

ETL delivery, system stabilization & 100% job success rate.

Delivered ETL pipelines across diverse data sources.
Stabilized systems by fixing and optimizing existing scripts.
Produced clear documentation for workflows and installations.
Maintained 100% job success rate.

ETLAutomationDocumentation

BJIT AI Engineer

Oct 2019 - Aug 2021 · Dhaka, Bangladesh

Computer vision (74% detection accuracy), NLP chatbots (+43% accuracy) & recommender systems.

Improved dataset quality by 30% through augmentation and labeling.
Delivered drone small-object detection with 74% accuracy.
Improved chatbot response accuracy by 43% with model training and API integration.
Built recommender system using collaborative and content-based filtering.

PyTorchNLPComputer Vision

Education

M.Sc.

Marquette University

Master’s in Data Science · 2026 - 2027

Research Assistant (mHealth)

B.Sc.

Khulna University of Engineering & Technology

B.Sc. in ECE · 2014 - 2018

Electronics & Communication Engineering

Publications

Google Scholar ORCID Research Gate

Employing PCA and t-statistical approach for feature extraction and classification of emotion from multichannel EEG signal

Egyptian Informatics Journal · Nov 2, 2019

Hybrid PCA + t-statistics features for EEG emotion recognition on SEED.
Evaluated with SVM, ANN, LDA, k-NN across subject-dependent and independent setups.
Best accuracy: 86.57% (ANN, subject-dependent).

View paper