Hi, I'm Leonidas Papanastasiou
Experienced software engineer with 5+ years building scalable cloud-native systems, blockchain networks, and data-driven applications across finance, energy, and supply chain sectors.
About
Software Engineer with 5+ years of experience building scalable cloud-native systems, blockchain networks, and data-driven trading tools. Expert in Django/FastAPI/React and Python-based architectures across finance, energy, and supply chain sectors.
Specialized in quantitative system optimization, algorithmic workflows, and data pipeline design for real-time analytics. Currently working as a Consultant - Quantitative Software Engineer at a Quantitative Hedge Fund in New York, designing scalable internal software solutions and enhancing Order Management Systems for high-frequency trading pipelines.
Cloud-Native Systems
Scalable architectures serving 5,000+ users
Blockchain Networks
Supply chain transparency solutions
Quantitative Trading
High-frequency trading systems
Data Engineering
Real-time analytics pipelines
Education
MSc in Data Science & Information Technologies
BSc in Informatics and Telecommunications
Experience
Quantitative Hedge Fund
Consultant - Quantitative Software Engineer
Designing scalable internal software solutions for high-frequency trading pipelines and enhancing Order Management Systems for real-time trade execution in quantitative trading environments.
Wings ICT Solutions
Blockchain & Data Engineer
Architected scalable private blockchain networks using Hyperledger Besu and implemented Flask-based RESTful microservices with 20+ endpoints for blockchain interaction layers.
Evolution Projects+
Full Stack Engineer / Product Manager
Led award-winning enterprise platform development scaling to 5,000+ users and delivered Django-based ML systems with 92% forecasting accuracy adopted by 45+ municipalities.
Liquimar Tanker Management Inc.
IT & Network Analyst
Maintained enterprise IT systems and implemented secure network infrastructure with 99.9% uptime during COVID-19 remote work transition.
Vision TV Entertainment
Cofounder & Lead Engineer
Conceptualized and created innovative OTT content delivery platform using Python, Linux, and Raspberry Pi, integrated into one of Greece's largest telecom networks.
Certifications & Awards
Professional Certifications
Machine Learning for Trading Specialization
Advanced machine learning techniques applied to quantitative trading and financial markets.
Verify CertificateQuantitative Finance & Algorithmic Trading
Comprehensive course covering quantitative finance, algorithmic trading strategies, and Python implementation.
Verify CertificateAI Engineering Professional Certificate
Professional certification in AI engineering, machine learning, and artificial intelligence systems.
Verify CertificateUltimate Rust Crash Course
Comprehensive Rust programming course covering systems programming and performance optimization.
Verify CertificateAwards & Recognition
Best Information System & IoT Application
Dynamic Workflow Management System (DEDA S.A.) - Award-winning enterprise platform.
Athens Startup Weekend
Innovative OTT content delivery platform for the Greek market.
Mathematics Contest "Thalis"
National mathematics competition showcasing analytical and problem-solving skills.
18th InfoCom World Conference
Presented Vision TV Entertainment startup at major technology conference.