Vaios Siopis

I help startups and growing tech teams scale their engineering organizations without losing clarity, culture, or execution quality.
With more than 20 years of experience across banking, SaaS, marketplaces, travel tech, and startups, I’ve worked as an Engineering Director and Senior Engineering Leader helping companies grow from early-stage environments into structured, scalable organizations. My focus is on translating strategy into practical execution while keeping people and teams at the center.
I have led and scaled engineering organizations from 25 to 150+ people, built fully remote squads, supported founders and managers through fast growth, and coached engineers into leadership roles. I bring a balance of technical understanding and human-centered leadership, helping startups avoid common scaling pitfalls.
I can help you with:
Scaling engineering teams and organizational structure
Engineering leadership & management coaching
Building healthy engineering culture and processes
Technical strategy and product alignment
Hiring, onboarding, and growing managers
Moving from startup chaos to sustainable delivery
Balancing speed vs quality in product development

Career Development
My mentoring style
I’m practical, supportive, and honest. I combine strategic thinking with real-world experience, helping founders and leaders make decisions they can sustain long term — not just quick fixes.
Whether you’re a founder, engineering manager, or senior engineer stepping into leadership, I help you see the bigger picture and move forward with confidence.