Nikos Rentas

Developed innovative solutions for EU Horizon 2020 sustainable technology initiatives across energy, healthcare, and industrial IoT sectors. Engineered blockchain-based renewable energy trading platform processing 10,000+ daily transactions with 99.8% success rate, enabling peer-to-peer energy trading across EU markets. Developed AI-powered healthcare management system for predictive patient analytics, improving operational efficiency by 30% for 5 medical facilities. Built real-time IoT monitoring dashboard for 500+ Fibaro smart devices, achieving sub-second data latency and 40% reduction in system downtime. Architected microservices infrastructure integrating blockchain with industrial IoT sensors, processing 1M+ daily data points for sustainable energy optimization. Delivered comprehensive technical documentation meeting Horizon 2020 compliance standards, contributing to successful project reviews and €2M continued funding.

Led the development of enterprise-grade e-commerce and content management platforms serving global Fortune 500 clients. Architected dual mission-critical platforms handling 1000+ daily transactions with automated order fulfillment and custom CMS for marketplace catalog management. Designed scalable microservices architecture achieving 40% response time improvement, 99.9% uptime, and $500K annual infrastructure cost savings. Orchestrated multi-cloud infrastructure across AWS and Azure, implementing automated CI/CD pipelines and enterprise-grade security protocols. Led a cross-functional team of 3 engineers across 3 time zones, delivering features 25% ahead of schedule through Agile methodologies with zero critical production incidents. Built AI-powered recommendation engine using Langchain and OpenAI, driving 35% increase in user engagement for 2M+ users. Established comprehensive testing framework achieving 90%+ code coverage and reducing bug escape rate by 70%. Mentored 5+ developers