OUR TEAM
Meet the Team Building Apeiron's Edge
Our team brings together vision, expertise, and unwavering commitment—with 15+ years in venture to back exceptional founders and build Europe’s next success stories.
We back People, not just business.
We believe humanity’s future depends on ambitious founders tackling its most critical challenges.
“Whenever you see a successful business, someone once made a courageous decision.” — Peter Drucker
At Apeiron, we are more than investors—we are partners in purpose. We back people with conviction, character, and a deep sense of mission. The ones building their forever companies. No Plan B, no exit-first mindset—just relentless pursuit of a vision that matters. We show up with curiosity, ask the hard “why”s, and walk alongside our founders from the first pitch to the long, winding middle—and beyond. We’re here to challenge norms, push boundaries, and elevate the kind of ventures that shape not just returns, but entire industries and regions.
We don’t chase hype or play the short game. We believe success is earned with grit, time, and trust. That’s why we operate as true allies—offering sound advice, real alignment, and unwavering support. Our measure of success? It’s simple: when our founders win, we win. Together, we’re building the resilient future of Europe—one bold idea, one enduring company at a time.
We’re drawn to the hard, the vital, and the overlooked.
We back early-stage companies transforming the systems that keep our world running: secure, sovereign, and smart.
Our focus is on founders building in:
Defense & Dual-Use Tech: AI/ML, ISR, cyber, autonomous systems
Construction & Industrial Tech: robotics, digital twins, supply chain ops
Logistics & Infrastructure AI: vertical SaaS, automation, fleet tech
Productivity & Workflow AI: industry-specific copilots and platforms
Cybersecurity & Digital Sovereignty: infrastructure, identity, compliance
Meet our Team
Dimitris Kalavros – Gousiou
Dimitris Kalavros-Gousiou is a founding figure in the Greek startup and tech ecosystem. He launched TEDxAthens in 2009 and later co-founded Found.ation, the country’s first accelerator and incubator, both of which played a defining role in shaping Greece’s entrepreneurial landscape. Since then, he has remained at the forefront of the ecosystem as one of its earliest and most consistent supporters.
He has served on the boards of Instacar, finloup, and MyJobNow (acquired by Skroutz), and is the Co-Founder and Non-Executive Director of SocialInnov, an NGO advancing digital skills in Greece. In 2018, he made his first step into venture capital by launching Velocity Partners, his debut fund. Today, as Founding Partner of Apeiron Ventures, he backs ambitious founders building category-defining companies with strong values at their core, with a particular focus on enterprise software, security, and defense. Dimitris holds an LLB in Law from the University of Kent and an LLM in Computer and Communications Law from Queen Mary, University of London.
Nikos Antoniou
Nikos Antoniou is a Founding Partner at Apeiron Ventures, driven by a long-standing passion for value creation.
After earning his MBA at Auburn University, he spent a decade in investment banking, working on IPOs, M&As, and capital raises. In 2010, he transitioned into venture capital, pursuing a new form of value creation: empowering visionary teams to transform ambitious ideas into world-class technology products and start-up companies with real impact.
As Managing Director at PJ Tech Catalyst, a €15M seed-stage venture capital fund, he led investments in technology startups that scaled globally and were acquired by leading multinationals, including Accusonus (acquired by Facebook), Pollfish (acquired by Prodege), Radiojar (acquired by iHeartMedia), Mist.io (acquired by Dell), and Taxibeat (acquired by Daimler/Benz Group). These successes reinforced his conviction that the right mix of vision, grit, and capital creates outsized impact.
In 2024, Nikos co-founded Apeiron Ventures with Dimitris Kalavros, channeling his experience into building a firm defined by enduring investments, deep partnerships, and a relentless belief in entrepreneurs shaping the future.
Constantinos Nikolaidis
Constantinos Nikolaidis is an Associate at Apeiron Ventures. He brings a combination of early-stage startup and legal experience. He was part of the product and CX team at SeedLegals, a London-based legaltech startup focused on early-stage fundraising, as well as an Analyst at Velocity.Partners VC.
He previously worked in the Tax and Legal team at PwC Athens on international tax structuring and due diligence. Constantinos holds a Bachelor of Laws (University of Sussex) and a Master of Laws (UCL) in International Banking and Finance, and has expertise in crypto, B2B SaaS, and marketplaces.
Despoina Argyrou
Despoina Argyrou is an Investment Analyst at Apeiron Ventures, where she supports the fund’s end-to-end investment activity, from sourcing and evaluating startups to conducting diligence and supporting portfolio growth. Before Apeiron, she held commercial and strategic roles in scaling tech companies across fintech, logistics, and SaaS, with experience in finance, systems design, and go-to-market execution.
Despoina holds a BSc in Biomedical Sciences from the University of Warwick and is completing her MSc in Finance at ALBA Graduate Business School. She also mentors early-stage teams and contributes to programs promoting broader access to capital and entrepreneurial knowledge.
Aris Kefalogiannis
Aris Kefalogiannis is an Investment Analyst at Apeiron Ventures, where he sources, evaluates, and supports early-stage startups across Europe. Before joining Apeiron, he founded Renthis2me, a sharing economy platform described as an “Airbnb for items,” and co-founded Young & Curious, a non-profit digital knowledge hub fostering dialogue during quarantine. He has also led three successful political campaigns.
Aris holds a BSc in Business Administration from the University of Macedonia and a Master of Global Business Administration from The Fletcher School at Tufts University, part of which he completed at Harvard University.
Chris Andreikos
Chris Andreikos has spent the past 20 years at the intersection of technology, business, and innovation. He began his career in software development before moving on to building digital services and products and expanding ventures in the ICT industry. Over time, he came to see that people and innovative culture are the key catalysts for unlocking the value of technology in the modern era.
Today, he advises organizations on their technology roadmaps, managing the development of solutions while bringing strategic value from the digital ecosystem.
Marios Anapliotis
Marios Anapliotis is an experienced product and engineering leader with a career spanning over 25 years dedicated to the creation and launch of tech products. He has built engineering teams, fostered a culture of innovation, and has a track record of bringing products from concept to go-live.
He possesses a strong techno-commercial background from more than a decade in corporate product management, where he established development processes that aligned engineering with business development, sales, marketing, and customer success. With over ten years of involvement in startups, he has served as co-founder, head of product, head of engineering, investor, and mentor, contributing to the success of multiple ventures.
He is the founder of Evline since 2017.
Konstantinos Papamiltiadis
Konstantinos Papamiltiadis is a product and business builder passionate about scaling products, platforms, and ecosystems by leveraging emerging technologies such as AI, AR, and mobile.
He is a seasoned commercial operator with experience in partnerships, go-to-market strategy, and team leadership at Meta and Snap. His focus is on delivering exceptional customer experiences while building high-performing teams that drive innovation.
Maria Basdekis
Maria Basdekis brings a diverse background in journalism and business support, with professional experience across Europe and Australia. She began her career as a journalist in Greece before moving into communications and executive support roles.
During her years in Australia, Maria worked in the not-for-profit sector, property services, events, and virtual assistance, supporting organizations in streamlining operations and improving efficiency. She is now based in Greece, continuing to provide professional business support to clients internationally.
