Nikos Gavalas

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Showcase of some of the code and posts I ‘ve written in the past:

Personal projects

• Three key-value stores implementations from scratch, designed for dataflow systems. (Python)
• Minimal Operating System built from scratch (C)
• Personal finance web app (Python/Django)
• Standalone Apache Flink cluster deployment with Ansible (Ansible)
• Simple C++ command-line arguments parsing library (C++)
• Dashboard for self-hosted apps (JavaScript/React)
• Graph Analysis Toolkit (MATLAB)
• Visualization of world demographics (JavaScript/d3.js)
• Implementation of selected anomaly detection algorithms in Python (Python)
• Implementation of selected anomaly detection algorithms in Scala (Scala)

TU Delft Coursework

• Thesis - Key-value stores with Incremental Snapshots for Dataflow Systems My thesis project (Python)
• Data Visualization Information Visualization (JavaScript/D3.js) - Volume Visualization (C++/OpenGL)
• Distributed Systems Paper implementation (Scala, Shell)
• Cyber Data Analytics Data analytics in the context of cybersecurity (Python/Scikit-learn)
• Deep Learning Paper reproduction (repo, blogpost) and course assignments (Python/PyTorch)
• Computer Vision by Deep Learning Project - Liver segmentation on CT images (Python/PyTorch)
• Release Engineering for Machine Learning Applications ML app with automated tests, deployment, monitoring (Python, Kubernetes)
• Web-scale Data Management Scalable web app with strong data consistency (Java/Spring, Kubernetes)
• Supercomputing for Big Data Big-Data analytics (Spark, Kafka, Scala, AWS EMR)

ACG Coursework

• Quantitative Finance project Comparison between statistical and Deep Learning methods (LSTMs) for time-series analysis (Python/Keras, statsmodels)

NTUA Coursework

• Thesis - Large-Scale Real-Time Anomaly Detection My thesis project (Python, Scala, Ansible)
• Algorithms and Complexity Course assignments (C++)
• Software Engineering Web app (C#, Bootstrap, JQuery)
• Artificial Intelligence A* implementation on OpenStreetMap data (Java)
• Embedded Systems Course assignments (C, Assembly)
• Distributed Systems Distributed group messaging application (Python)
• Programming Languages I Course assignments (C, Java, SML/NJ, Prolog)
• Operating Systems Course assignments (C)