MSc in IT Engineering
FH Wedel · Hamburg, Germany
Postgraduate study in IT Engineering.
Work
The whole timeline.
Three years at Gigalogy across SmartAds, maira-api and R&D, two publications, and the study that came before and after.
Software Engineer (R&D)
Gigalogy / R&D · Dhaka, Bangladesh
Rebuilt Maira’s retrieval architecture from vector RAG to graph RAG, over a purpose-built knowledge graph with a live memory layer.
8 details
- Evaluated database engines for a growing customer base — benchmarking Tsurugi DB against alternatives on structure, implementation cost and scaling behaviour.
- Rebuilt Maira AI from the ground up: vector RAG replaced by graph RAG over a purpose-built knowledge graph.
- Designed the knowledge graph for multi-tenancy, access scoping, and dynamic creation and deletion at the lowest cost per tenant.
- Built a memory layer that ingests conversations live, so context accumulates instead of being re-derived per session.
- Compared local and hosted models, and RST parsers, to reach a state-of-the-art extraction pipeline.
- Designed a query router that splits traffic between vector RAG and graph RAG to cut cost and latency without losing answer quality.
- Enabled graph RAG to reference multiple dataset graphs simultaneously within a single query.
- Researched discourse conflict resolvers that engage automatically to reconcile contradictory narratives across sources.
Knowledge GraphsGraph RAGVector DatabasesTsurugi DBRST ParsingPythonMulti-tenancy
Software Engineer
Gigalogy / maira-api · Dhaka, Bangladesh
Built realtime voice AI over customer datasets, and shipped research and deep-thinking capabilities into the Maira assistant.
5 details
- Integrated research and deep-thinking features into the Maira assistant.
- Built realtime live voice chat with AI connected to customer datasets — users ask questions about their own company and get accurate spoken answers live.
- Held the voice pipeline to millisecond response times: turn detection, voice activity detection (VAD), and noise cancellation.
- Implemented intent detection and query routing so each request took the cheapest path that could still answer it.
- Reused retrieved information and conversation context across turns to cut redundant model calls and hold cost down.
Realtime Voice AIVADTurn DetectionNoise CancellationIntent DetectionQuery RoutingPython
Software Engineer
Gigalogy / SmartAds · Dhaka, Bangladesh
Performance and throughput work on the ad delivery pipeline — measured before and after, and written up as a case study.
3 details
- Improved API performance by up to 99.7% on the worst-performing paths.
- Reduced the API calls required for a single operation from 10,000 to 140.
- Cut a batch job’s runtime from 2 hours to 3 minutes.
PythonAPI OptimizationBatch Processing
Deep Fake Analysis Using Convolutional Neural Network and Vision Transformer
Preprint · With Mohammad Monirujjaman Khan
Dual-stage deepfake detection: a fine-tuned EfficientNet extracts frame-level features, and a Vision Transformer classifies the resulting sequence for spatial and temporal manipulation artifacts.
Computer VisionVision TransformersEfficientNetDeepfake Forensics
Liver Cirrhosis Prediction using Machine Learning Approaches
IEEE UEMCON 2022 · With Mohammad Monirujjaman Khan
Comparative diagnostic study training SVM, Random Forest and Logistic Regression classifiers on clinical metrics to predict cirrhosis staging, with feature selection tuned for early-stage detection.
Machine LearningMedical DiagnosticsFeature Engineering
BSc in Computer Science and Engineering
North South University · Dhaka, Bangladesh
Concentration in Intelligent Systems and Machine Learning. Graduated with honors.
1 details
- Senior design project: an autonomous self-driving vehicle prototype combining convolutional lane detection and barrier classification with ultrasonic and IMU sensor fusion on Raspberry Pi and Arduino.
Sensor FusionComputer VisionMicrocontrollers
Undergraduate studies in Computer Engineering
North Dakota State University · Fargo, North Dakota, USA
Foundational coursework in C++, electrical circuits, microcontroller systems and physics.