Experience and contributions

Cefalo Bangladesh Limited

Senior Software Engineer

Promoted from Software Engineer

Data Engineer (Contract) at Volue Insight, Norway (Remote)

Reliable data infrastructure for Pan-European energy-market forecasting.

• Built and managed 300+ batch ETL pipelines orchestrated with Apache Airflow on Apache Cassandra, migrating raw Python scripts to ingest 1M+ data points daily from 500+ sources.
• Implemented automated data verification processes, reducing debugging time by 95%.
• Redesigned data ingestion into a generalized YAML-based ETL framework, cutting development effort for new sources by 60%.
• Optimized Django ORM relationship loading, reducing database queries by 51% and processing time by 45%.
• Implemented data-quality monitoring with Prometheus, Grafana, and Slack alerts, reducing incident response time by 35%.
• Built backend services and reliable data availability for a platform providing energy-market forecasts with Pan-European models across multiple timeframes.
• Led the Urgent Market Data backend team and built a performance tracking dashboard in ClickUp.
• Collected complex, multilingual data from web, API, and FTP sources in CSV, Excel, JSON, text, and HTML formats.
• Delivered the Urgent Market Data service, with ETL for power-market outage data and a calculation-heavy REST API serving point-in-time snapshots.
• Migrated event messaging from Google Pub/Sub to Azure Service Bus.
• Architected SocialPublisher, an LLM-based tool that fully automates social media posting.
• Worked on CI/CD pipelines with GitHub Actions, DockerHub, and Google Cloud.

• Python
• Apache Airflow
• Apache Cassandra
• Django REST Framework
• YAML
• Prometheus
• Grafana
• Azure Service Bus
• Docker
• GitHub Actions
• Google Cloud

BJIT Limited

AI Engineer

Applied ML from data preparation and training to evaluation and deployment.

• Led a small-object detection project for drones, achieving 74% accuracy.
• Improved chatbot response accuracy by 43% through model training and inference scripts.
• Improved dataset quality and quantity by 30% through augmentation, annotation, and labeling.
• Achieved the highest score (87%) among 15 trainee engineers in the AI training program.
• Completed an intensive 3-month AI training program, implementing logistic regression and neural networks from scratch and studying linear algebra, forward passes, backpropagation, overfitting, and underfitting.
• Worked across the AI development lifecycle, including data collection, preparation, model implementation, training, evaluation, tuning, and deployment.
• Built human and pose detection models with YOLOv3 and SSD, including a training project detecting human trespassing at train crossings.
• Built a personalized recommender using collaborative and content-based filtering.
• Analyzed performance metrics and generated reports to evaluate and select AI solutions.

• PyTorch
• YOLOv3
• SSD
• UNet
• Faster R-CNN
• BERT
• RASA
• NLP
• TensorFlow

Misfit Technologies Ltd.

Software Engineer Intern

Django foundations through production contributions and training projects.

• Developed a Django web storage system with file upload, sorting, deletion, and folder creation in 4 weeks.
• Contributed to the Django-based iFarmer platform supporting farming and livestock sponsorship in Bangladesh.

• Python
• Django
• Web Development

Upwork

Python Developer (Freelance)

Data extraction and automation for freelance clients.

• Maintained a 100% job success rate through consistently high-quality delivery.
• Completed freelance projects primarily focused on data extraction and ETL across diverse sources.
• Improved system stability by fixing and refactoring existing scripts.
• Wrote detailed workflow and installation documentation.

• Python
• ETL
• Web Scraping
• Automation
• Documentation