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I am a Senior Software Engineer leading the development of enterprise-grade e-commerce and content management platforms serving global Fortune 500 clients. I specialize in architecting dual mission-critical platforms with high-performance and scalable microservices achieving significant improvements in response time, uptime, and cost savings. I am experienced in orchestrating multi-cloud infrastructure and implementing automated CI/CD pipelines and enterprise-grade security protocols. Previously, I developed innovative solutions for EU Horizon 2020 sustainable technology initiatives across energy, healthcare, and industrial IoT sectors. I engineered blockchain-based renewable energy trading platforms and AI-powered healthcare management systems, improving operational efficiency and reducing downtime. I am passionate about mentoring developers and delivering features ahead of schedule with zero critical incidents, thriving in cross-functional and multi-time zone team environments.…I am a Senior Software Engineer leading the development of enterprise-grade e-commerce and content management platforms serving global Fortune 500 clients. I specialize in architecting dual mission-critical platforms with high-performance and scalable microservices achieving significant improvements in response time, uptime, and cost savings. I am experienced in orchestrating multi-cloud infrastructure and implementing automated CI/CD pipelines and enterprise-grade security protocols. Previously, I developed innovative solutions for EU Horizon 2020 sustainable technology initiatives across energy, healthcare, and industrial IoT sectors. I engineered blockchain-based renewable energy trading platforms and AI-powered healthcare management systems, improving operational efficiency and reducing downtime. I am passionate about mentoring developers and delivering features ahead of schedule with zero critical incidents, thriving in cross-functional and multi-time zone team environments.

Nikos Rentas

Front-End Developer, Back-End Developer, Full Stack Developer, +4

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I am a Senior Software Engineer leading the development of enterprise-grade e-commerce and content management platforms serving global Fortune 500 clients. I specialize in architecting dual mission-critical platforms with high-performance and scalable microservices achieving significant improvements in response time, uptime, and cost savings. I am experienced in orchestrating multi-cloud infrastructure and implementing automated CI/CD pipelines and enterprise-grade security protocols. Previously, I developed innovative solutions for EU Horizon 2020 sustainable technology initiatives across energy, healthcare, and industrial IoT sectors. I engineered blockchain-based renewable energy trading platforms and AI-powered healthcare management systems, improving operational efficiency and reducing downtime. I am passionate about mentoring developers and delivering features ahead of schedule with zero critical incidents, thriving in cross-functional and multi-time zone team environments.…I am a Senior Software Engineer leading the development of enterprise-grade e-commerce and content management platforms serving global Fortune 500 clients. I specialize in architecting dual mission-critical platforms with high-performance and scalable microservices achieving significant improvements in response time, uptime, and cost savings. I am experienced in orchestrating multi-cloud infrastructure and implementing automated CI/CD pipelines and enterprise-grade security protocols. Previously, I developed innovative solutions for EU Horizon 2020 sustainable technology initiatives across energy, healthcare, and industrial IoT sectors. I engineered blockchain-based renewable energy trading platforms and AI-powered healthcare management systems, improving operational efficiency and reducing downtime. I am passionate about mentoring developers and delivering features ahead of schedule with zero critical incidents, thriving in cross-functional and multi-time zone team environments.

Available to hire

I am a Senior Software Engineer leading the development of enterprise-grade e-commerce and content management platforms serving global Fortune 500 clients. I specialize in architecting dual mission-critical platforms with high-performance and scalable microservices achieving significant improvements in response time, uptime, and cost savings. I am experienced in orchestrating multi-cloud infrastructure and implementing automated CI/CD pipelines and enterprise-grade security protocols.

Previously, I developed innovative solutions for EU Horizon 2020 sustainable technology initiatives across energy, healthcare, and industrial IoT sectors. I engineered blockchain-based renewable energy trading platforms and AI-powered healthcare management systems, improving operational efficiency and reducing downtime. I am passionate about mentoring developers and delivering features ahead of schedule with zero critical incidents, thriving in cross-functional and multi-time zone team environments.

Skills

Experience Level

Expert

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Expert

Work Experience

Senior Software Engineer at Altair

September 1, 2021 - Present

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

Software Engineer at CERTH

September 1, 2021 - August 26, 2025

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.