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I’m a hands-on Lead Developer and AI-focused engineer with 15+ years of experience, 3x co-founder, and 1 exit. I’ve built and scaled startup portfolios and AI-powered systems across health care, HR, and fintech, leading multi-national teams to ship impactful software at scale. My passion is turning ambitious ideas into real, revenue-generating products while mentoring engineers and shaping technical strategy. I thrive in fast-paced environments where architecture, reliability, and measurable value matter. I enjoy architecting AI-powered systems, delivering robust cloud infrastructure, and collaborating across product, design, and customer teams to solve real-world problems with elegant software solutions.…I’m a hands-on Lead Developer and AI-focused engineer with 15+ years of experience, 3x co-founder, and 1 exit. I’ve built and scaled startup portfolios and AI-powered systems across health care, HR, and fintech, leading multi-national teams to ship impactful software at scale. My passion is turning ambitious ideas into real, revenue-generating products while mentoring engineers and shaping technical strategy. I thrive in fast-paced environments where architecture, reliability, and measurable value matter. I enjoy architecting AI-powered systems, delivering robust cloud infrastructure, and collaborating across product, design, and customer teams to solve real-world problems with elegant software solutions.

Christos Chatzivagias

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

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I’m a hands-on Lead Developer and AI-focused engineer with 15+ years of experience, 3x co-founder, and 1 exit. I’ve built and scaled startup portfolios and AI-powered systems across health care, HR, and fintech, leading multi-national teams to ship impactful software at scale. My passion is turning ambitious ideas into real, revenue-generating products while mentoring engineers and shaping technical strategy. I thrive in fast-paced environments where architecture, reliability, and measurable value matter. I enjoy architecting AI-powered systems, delivering robust cloud infrastructure, and collaborating across product, design, and customer teams to solve real-world problems with elegant software solutions.…I’m a hands-on Lead Developer and AI-focused engineer with 15+ years of experience, 3x co-founder, and 1 exit. I’ve built and scaled startup portfolios and AI-powered systems across health care, HR, and fintech, leading multi-national teams to ship impactful software at scale. My passion is turning ambitious ideas into real, revenue-generating products while mentoring engineers and shaping technical strategy. I thrive in fast-paced environments where architecture, reliability, and measurable value matter. I enjoy architecting AI-powered systems, delivering robust cloud infrastructure, and collaborating across product, design, and customer teams to solve real-world problems with elegant software solutions.

Available to hire

I’m a hands-on Lead Developer and AI-focused engineer with 15+ years of experience, 3x co-founder, and 1 exit. I’ve built and scaled startup portfolios and AI-powered systems across health care, HR, and fintech, leading multi-national teams to ship impactful software at scale. My passion is turning ambitious ideas into real, revenue-generating products while mentoring engineers and shaping technical strategy.

I thrive in fast-paced environments where architecture, reliability, and measurable value matter. I enjoy architecting AI-powered systems, delivering robust cloud infrastructure, and collaborating across product, design, and customer teams to solve real-world problems with elegant software solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Beginner

Beginner

Beginner

Beginner

Beginner

Beginner

Beginner

Beginner

Language

Greek, Modern

Fluent

English

Fluent

Work Experience

Co-Founder & Lead Engineer at Jubile Tech Incubator

July 1, 2025 - July 1, 2025

Co-founded a tech incubator helping non-tech founders develop MVPs; led early-stage startups, managed multinational teams, and delivered AI-enabled solutions across health care, HR, and fintech; drove ARR growth to $70M+, served 10K+ patients, 1K+ doctors, and 1K+ medical practices; embedded AI solutions achieving 80%+ performance.

Full Stack / DevOps / Blockchain Developer at Block.co

January 1, 2021 - January 1, 2021

Engineered blockchain document verification platform using NFT tech; implemented ERC-721 and ERC-1155 smart contracts using Solidity; built end-to-end solution with Docker, Kubernetes, React, Python, Django, PostgreSQL; established secure, scalable infrastructure.

Senior Full Stack Developer at Dimetor GmbH

January 1, 2020 - January 1, 2020

Developed core components for AirborneRF safety platform for UAV flight path calculations; implemented high-performance computing features using CUDA/C++ for complex calculations; built full-stack solution with Docker, AngularJS, Java, Spring Boot, PostgreSQL, Python; created testing framework with PyTest and SQLAlchemy (Beta).

Software Developer at BETA NEERE

January 1, 2019 - January 1, 2019

Architected and developed multiple core components for CAE applications; contributed to growing the company from 100 to 250+ employees; built BETA NEERE collaboration platform and supporting testing framework across React.js, Node.js, PostgreSQL, Python.

CoFounder & Lead Engineer at Jubile Tech Incubator

July 1, 2025 - July 1, 2025

Co-founded a tech incubator helping non-tech founders develop their MVPs. Joined early on 10 well-funded startups as their Tech PM, leading multi-national scrum teams of 4-20 people, achieving: $0 → $70M+ ARR; served 10K+ patients, 1K+ doctors, and 1K+ medical practices; 20+ embedded AI solutions with 80%+ performance scores.

Senior Full Stack Developer at Block.co

December 31, 2021 - December 31, 2021

Engineered blockchain documentation verification platform using NFT technology; implemented ERC-721 and ERC-1155 smart contracts using Solidity; built full-stack solution with Docker, Kubernetes, Python, Django, React, and PostgreSQL; designed secure, scalable infrastructure for blockchain operations.

Senior Full Stack Developer at Dimetor GmbH

December 31, 2020 - December 31, 2020

Developed core components for Airborne RF safety platform; implemented high-performance computing features using CUDA/C++ for complex calculations; built full-stack solution with Docker, AngularJS, Java, Spring Boot, PostgreSQL; created testing framework with PyTest & SQLAlchemy.

Software Developer at Various CAE Applications

December 31, 2019 - December 31, 2019

Architected and developed multiple core components for CAE applications; company grew from 100 to 250+ employees and revenue from ~€20M to ~$90M; developed a user collaboration platform (BETA NEERE) and testing frameworks.

CoFounder & Lead Engineer at Jubile Tech Incubator

March 1, 2021 - July 1, 2025

Co-founded and led a tech incubator in London (remote), joining early on 10 well-funded startups as their Tech PM and leading multinational scrum teams of 4–20 engineers. Drove impact across health care, HR tech, and fintech by shipping AI-powered solutions, growing combined ARR from $0 to $70M+, serving 10K+ patients and 1K+ doctors/medical practices, and delivering 20+ embedded AI solutions with 80%+ performance scores. Achievements include building scalable, AI-enabled products and steering technology strategy for portfolio companies.

FullStack/DevOps/Blockchain Developer at Block.co

January 1, 2020 - January 1, 2021

Designed and implemented a blockchain documentation verification platform using NFT technologies; implemented ERC-721 and ERC-1155 smart contracts with Solidity; built a full-stack solution with Docker, Kubernetes, Python, Django, React, and PostgreSQL; established secure, scalable infra for blockchain operations.

Senior Full Stack Developer at Dimetor GmbH

January 1, 2019 - January 1, 2020

Developed core components for an Airborne RF safety platform for UAV flight path calculations; implemented high-performance computing features using CUDA/C++ for complex calculations; built a full-stack solution with Docker, AngularJS, Java, Spring Boot, PostgreSQL; established a comprehensive testing framework with PyTest and SQLAlchemy.

Software Developer at Thessaloniki (On-site)

January 1, 2009 - January 1, 2019

Architected and developed multiple core components for CAE applications; contributed to company growth from 100 to 250+ employees and revenue from ~€20M to ~$90M; involved in activities contributing to the company’s eventual acquisition for ~$1.24B in 2024.