Keynote Speakers

David Foster

Founding Partner, Applied Data Science Partners | Author of 'Generative Deep Learning' (O'Reilly)/ Openstack

David Foster is a Founding Partner of Applied Data Science Partners, a data science consultancy building innovative AI solutions for clients. He holds an MA in Mathematics from Trinity College, Cambridge, UK and an MSc in Operational Research from the University of Warwick. David has won several international machine learning competitions and is the author of the best-selling book ‘Generative Deep Learning: Teaching Machines to Paint, Write, Compose and Play’. He has also authored several successful blog posts on deep reinforcement learning including ‘How To Build Your Own AlphaZero AI using Keras’.

Norbert Kraft

Nokia / Bell Labs

Norbert Kraft works in Telecom industry since 1991. He held several positions in research, development and system engineering for wide area network equipment.

Now he is a senior researcher at Nokia Bell Labs, where he is working in the areas of network data intelligence, data mining, machine learning, big data technologies and artificial intelligence. All these technologies are key factors to derive new insights for network management and to improve customer experience in public networks

Title: ‘How to optimize Mobile Networks with Reinforcement Learning’

Abstract: This talk introduces Reinforcement Learning techniques, which imitates human learning by using trial and error methods in conjunction with deep learning. It can be a tremendous enhancement for supervised learning approaches, especially in the case large sets of labeled data for training purposes are unavailable. This presentation also introduce a Nokia Bell Labs research project, which applies Reinforcement Learning for the optimization of public radio networks.

Ghanshyam Mann

NEC / OpenStack Technical Committee

Ghanshyam works for NEC and is currently serving as a member of OpenStack Technical Committee and as PTL of OpenStack QA. He is full-time upstream developer in OpenStack with an active contribution in many projects mainly in Nova, QA etc. He has worked in different domains like Avionics, Storage, Cloud and Virtualization etc. He started his Software career as software developer in Avionic domain with C++ for around 4 years and then started working as OpenStack upstream developer since 2012. 

He is also a frequent speaker in OpenStack summits and LinuxCon and presented talks in LinuxCon 2015, OpenStack Summit, 2015, 2016, 2017 on various topics like RESTful API, QA, Cloud Backup, Open Source Community Building etc. He has been actively involved in various PoC and solutions design around OpenStack.

More Details:

Title: “OpenStack Community: Structure, Activeness & Highlights”

What is OpenStack community working model (including governance) which helps to keep OpenStack in top 3 most active open-source, how active our community is not just in developing the new features but also involving users/operators, education and growing local community etc, including the latest technical highlights for OpenStack.

Sean McGinnis

Dell / Openstack

Sean is a Distinguished Engineer in the Dell EMC Office of the CTO, focusing on programs to support open source usage and involvement across the company. Sean is currently a community representative on the OpenStack Foundation Board of Directors. He has served on the OpenStack Technical Committee (TC), was the Project Team Lead (PTL) for the Cinder block storage project and the Release Management team, and is currently a core reviewer in a number of OpenStack projects. 


Idan Shahar


I am an entrepreneur at heart with a passion for bleeding edge open source tech. I love operating at the sweet spot of where business meets technology – the area where we can all drive true impact.I started coding at age 14, driven by my intense curiosity of how things worked – especially with computers. My journey since then has taken me through various roles and industries such as defense, security developer, cloud architect, and open-source advocacy. Fast forward to today – I am working at Microsoft on a specialized team where we focus on enabling our partner and startup ecosystem. We help ISVs to rapidly build their products on Azure in an agile, secure and efficient way in order to drive a mutually successful business model. I achieve this by helping to envision and instantiate digital transformations – starting with strategic business leaders and moving all the way to dev teams. This work allows me to work closely with many teams to gain diverse perspective – while offering my own – to help companies build or rebuild their architectures to take advantage of the latest DevOps and Cloud Native models. I love my job and this ever-changing industry and look forward most to meeting and collaborating with great people! Drop me a line at 

Plenary Speakers

Alexandros Ntoulas

National and Kapodistrian University of Athens

Alexandros Ntoulas is an Assistant Professor in the Department of Informatics and Telecommunications at the National and Kapodistrian University of Athens. He received his Ph.D. and M.Sc. degrees in Computer Science from the University of California Los Angeles (UCLA) and an MSc and Engineering Diploma from the Computer Engineering and Informatics Department of Patras University. In the past, Alexandros worked at Microsoft Research, Zynga, Samsung Reseach and LinkedIn, where he focused on applying and scaling Machine Learning models for applications such as Web spam detection, commercial search, social search, social gaming, Internet of Things and computational advertising. He is also the co-founder of Infocious (now Piksel). He got the best paper award in ICDE 2005, the best paper runner-up award in WWW 2009, and the best applied data science reviewer award in KDD 2017 and he currently holds 11 patents.

He will speak about: A/B Testing for Applications. He will go over examples, pitfalls, frameworks as well as principles and challenges to successfully run and learn from A/B tests in data intensive environments.

Ankit Gadgil

Mozilla / Redhat

Ankit Gadgil is an Open Source enthusiast who supports in Privacy by design. He is an open web advocate who believes the web should be equally accessible to all for equal opportunity. He likes engineering software through comprehensive architecture and design. Ankit is a Mozilla community mentor, Mozilla Reps Peer and a tech speaker. As a day job, he contributes code at Red Hat and enjoys working with Python and JS.

Tracking Protection Using Firefox.

We often gloss over exactly why personal data is worth protecting. If you are not paying for the product, you are the product. As a solution are you using private browsing or incognito mode? I am afraid it’s not enough to stop the data leaks. This session is for everyone who wants to protect the data and privacy by doing more. It’s us who can take action to change our habits and start protecting our privacy and our data. We will talk about possible data threats and the ways to use your browser in a more secure way to protect your privacy. We also demo how to change Firefox’s configuration to help stop data leaks from your browser and finding an alternative to the most widely used search engines

Antonis Kalipetis

Antonis is a Docker Captain and a Senior Software Engineer at — the leading online food delivery service in Greece. He is a Python lover and developer who helps teams embrace containers and improve their development workflow. He loves automating stuff and sharing knowledge around all things containers, DevOps and developer workflows. You can follow him on Twitter @akalipetis.

Constantinos Halevidis


Constantinos holds a PhD and a Master of Engineering in Electrical and Computer Engineering from the National Technical University of Athens, Greece. As a researcher, he has published over 10 papers in peer-reviewed journals, and over 10 articles in peer-reviewed conference proceedings, most recently with Niometrics on the subject of encrypted network traffic identification.
As Vice President of Data Science at Niometrics, Constantinos leads data scientists, signature analysts, and visualisation experts in developing innovative applications that bring out the full value of Niometrics’ technology.

Darko Meszaros


Darko is a Senior Technical Evangelist. He shares his passion and technological know-how with Engineers, Developers, and various communities across the world. If it can be automated, Darko tries to do so. Most of his focus is towards DevOps and Management Tools, where automation, pipelines, and efficient developer tools is the name of the game – click less and code more so you do not repeat yourself – is what he says!

He has a long IT career in various areas, from retail, to government, to even large telcos. In AWS, Darko has worked as a Premium Support Engineer and as a Solutions Architect, having first-hand experience with AWS customers and their AWS adventures, helping them learn the ways of the cloud!

As a passionate collector of old computers, he has a collection of computers and games and they came as an inspiration to tinker with computers as much as possible! Darko comes from Serbia, but has lived in Czech Republic, Malta, Ireland and now Germany!

Simplify Your front end Apps with Serverless Backends (During this session, I will show you how to deploy a GraphQL API, without requiring to be an API expert. I will show you how to easily integrate an authentication wall, with minimal coding. By attending this session you will be able to accelerate the development of your web & mobile applications by using simplified backends in the cloud.)

Emmanouil Serrelis

Expanding the CIA triad for the era of the 4th Industrial Revolution

Dr. Emmanouil (Manos) Serrelis has been an active speaker for InfoSec and IT-related topics for more than 15 years. At daytime Manos is the head of Information Assurance and Business Continuity team in Intrasoft International, providing various Information Security Services to internal and external clients, while at the evenings he transforms to a lecturer and researcher for InfoSec topics in Metropolitan College, providing and receiving knowledge and inspiration to/from his students. His research interests remain close to Information Security, but have evolved from High Availability Infrastructures, to Information Security Metrics, to Secure Social Lending, to Secure IoT devices and lately to redefining Security to accommodate environmental issues. He’s a motivated and positive thinking speaker, who wishes to leave this planet to his kids and friends in a decent condition..

Giannis Papadakis


I have been working at Atypon more than 4 years as a Software QA Manager and previously as Software Test Automation Architect
Areas of expertise include:

  • Evangelize Test Automation and assist software development teams through mentorship and coaching
  • Build and Develop high productive Software Engineer in Test Teams
  • Partner with cross-functional core stakeholders across Product Development & Product Management to lead the Quality Direction, facilitate key technical decision points
  • Establish and extend the use of BDD/TDD methodology throughout the organization
  • Organizing external events and workshops with well established communities like Ministry of Testing or GRTB (ISTQB Greek Chamber)

Giannis is a Software QA Manager in Atypon with experience in Test Automation Architecture. He is a Test Automation Evangelist and mentor for various Software development teams, passionate about building high efficient tests. His passion include alignment of cross-functional stakeholders across product lifecycle towards increased, inspire BDD/TDD method usage throughout the organization, organizing external events and workshops with well established testing communities like Ministry of Testing and GRTB (ISTQB Greek Chamber)

Dimitrios Glynos


Dr. Dimitrios Glynos is the Director of Product Security Services of CENSUS S.A., a company that builds on strong research foundations to provide specialized IT Security services to customers worldwide. He holds a PhD in Computer Science and in the past has worked as an IT security consultant, digital forensics expert, software developer and systems administrator. 

At CENSUS he has led security assessment projects of devices, software and infrastructure for many different sectors including software & Internet services, financial, banking, insurance, payments, healthcare, consumer electronics and telecommunications.

Ihsan Demir


I am involved in development of Hazelcast Open Binary Protocol from start and I have implemented it in several languages (C++, Java). I have been developing software in distributed environments over the last 10 years or more and I have been developing software for about 20-years.  

Yiannis Kanellopoulos


Yiannis Kanellopoulos has spent the better part of two decades analyzing and evaluating software systems in order to help organizations address any potential risks and flaws related to them. (In his experience, these risks or flaws are always due to human involvement.) With Code4Thought, Yiannis is turning his expertise into democratizing technology by rendering algorithms transparent and helping organizations become accountable. Targeted outcomes of his work include building trust between the organization utilizing the algorithms and those affected by its output and rendering the algorithms more persuasive, since their reasoning will be easier to explain. He’s also a founding member of Orange Grove Patras, a business incubator sponsored by the Dutch Embassy in Greece to promote entrepreneurship and counter youth unemployment. Yiannis holds a PhD in computer science from the University of Manchester.

Kostas Kechagias

Kostas Papadatos

Cyber Noesis

Information Security Executive and Entrepreneur with over twenty years experience in a multitude of cross-functional roles of Information Security. Extensive executive background combined with strong information security expertise (in both management & technical areas) and cross-industry exposure (in sectors like financial, telecoms, manufacturing, lottery, healthcare, transportation, retail, government, army etc.). He is the Founder/Managing Director of Cyber Noesis and a founding member of DPO Academy. He was the founder and President of (ISC)2 Hellenic Chapter from 2013 to 2019. In the past, he was a founding member of ENCODE and has also worked for Adacom as Business Development Director, for DQS Hellas, Space Hellas and Technological Educational Institute of Piraeus.

Highly focused with a consistent, international track record in leading and delivering demanding security projects including risk analyses, security manuals & BCP development, security architectures design & implementation, technical security & compliance audits and penetration tests. During his career he has been a keynote or invited speaker in numerous national and international conferences and the author of plenty information security related articles in specialised magazines and journals.

Has a rich mix of senior level experience in business development, sales, operations, finance, project and people management. Diversely experienced from business plan development and fund raising to startup establishment and financing, turnaround and organic growth of a company, mergers and acquisitions, as well as the sale of a company.

Holds an MSc in Information Security from Royal Holloway (University of London) and a number of industry certifications including CISSP-ISSMP, CISM, ISO27001 Lead Auditor, PMP, MBCI, ISO 27005 Risk Manager and Certified-DPO.

Specialties: Risk Assessment, Information Security Management, Compliance, IT Security,Business Continuity Management, Security Audits & Penetration Testing, Business Development, Sales, Project Management.

Martins Sipenko


Martins is a software engineering professional with years of experience in software and infrastructure design, development
and integration. Currently working in KASKO where he is responsible for building and running secure, modern and scalable
infrastructure. Open source contributor. Huge fan of automation.

Private PKI using Hashicorp Vault.

There shouldn’t be any reasons to not have SSL/TLS encrypted traffic these days, even for private service communication.
In this talk, Martins will share his
experience in setting up PKI and automated certificate management using Hashicorp Vault.

Prokopios Drogkaris

European Union Agency for Cybersecurity

Prokopios Drogkaris holds a Diploma in Information and Communication Systems Engineering from the University of the Aegean, Greece, an MSc in Information Systems from City University London, UK and a Ph.D. in Privacy and Security in e-Government Information Systems from the Department of Information and Communication Systems Engineering, University of the Aegean, Greece. He was also within University of Piraeus, Department of Digital Systems as a postdoc researcher under the supervision of Professor C. Lambrinoudakis. Currently he is an Expert in Network and Information Security at European Union Agency for Cybersecurity (ENISA) working in the areas of Privacy, Cybersecurity Certification and Trust Services.

He is an author of several scientific publications, an editorial board member in International Journal on Advances in Internet Technology, IARIA Publications and has served as a member on program and organizing committees at several scientific International and European conferences


Serena Peruzzo


Serena is a senior data scientist at the analytics consultancy Bardess, currently based in Toronto, Canada. Before joining Bardess, she has worked both in academia as an ML researcher and in the industry as a data science consultant on the Australian, British and Canadian markets. Serena is passionate about education, community and tech for good and she splits her free time between mentoring data science students, organizing meetups and volunteering.

Feature engineering: the dark magic behind data science

Machine Learning models are often perceived as dark magic, but they’re only as good as the data they’re trained on. Feature engineering is where the real magic happens! In this talk, I’ll share some of my favourite spells for data engineering.

Solomon Sia


Solomon is a software engineer working in cloud security at Uber. He develops on the Uber branch of Hammer as well as CMON, an Uber specific continuous monitoring solution that identifies and tracks security issues and makes it easy for engineers to resolve them.
He has a bachelor’s degree from Carnegie Mellon University and a Masters from Stanford. In a previous life, he developed hardware augmented reality technologies for Microsoft and was a legal consultant in software IP litigation cases for Google, Facebook and Amazon.
Besides CMON/Hammer, other notable projects include I.AM Robot, and automated identity and access management system for AWS.

Michael Sudakovitch


I joined Uber Engineering Security as a Cloud Security engineer shortly after the infamous 2016 data breach, which partially resulted in poor cloud asset management and lack of real-time incident response. At the time, the challenge grew bigger as we continued to expand into additional cloud providers, namely GCP and Azure. Along with my peers, I was tasked with “hardening the cloud environment”, and the system I describe in this talk (internally called CLogS, standing for “Cloud Logging System”) was one of the outcomes and my main contributions. It employs Cloud-native services and uses wide-scale containerized deployment. The system is now widely adopted throughout the company and has proven itself numerously in both table-top exercises and real attacks and anomalies. This would be the first talk outside of Uber describing this system. 

Yus Ngadiman


Hi my name is Yus. I am Australian and I have been a software engineer for 17 years. I am currently employed with LaunchDarkly as a Senior Frontend Engineer. My interests are primarily frontend, mostly react, graphql, node and javascript tools.

I am a big proponent of open source and always push for contributing to oss. I have several packages on github: react-site-nav and universal-hot-reload to name a couple. Please check out my blog!

I love speaking and attending conferences and sharing new ideas and thoughts with other developers.

George Giannakopoulos

NCSR Demokritos

George is an Artificial Intelligence (AI) research fellow at NCSR Demokritos (Greece) as well as co-founder, CEO and Chief Research Officer of SciFY, a not-for-profit Company on applying Artificial Intelligence to everyday life for the common good. He has more than 15 years of AI-related experience on industrial and EU-funded projects and has worked for more than 20 years in IT consulting and software engineering, covering domains such as AI and natural language processing (NLP), data mining, data journalism, bio-medical informatics, the semantic web and others.
He is a Member of the Board of the Hellenic Artificial Intelligence Society (EETN) since January 2019, and a member of the Association of Computational Linguistics (ACL).
Through NCSR Demokritos and SciFY, he has contributed to the digital and AI-transformation of organizations and groups, the tech empowerment of several start-ups and to the democratization of AI knowledge, by co-organizing a number of international and national events on the research and application of Information and Communication Technologies (ICT) and AI. The contribution includes tens of presentations and tutorials related to AI and its application, to audiences ranging from devs, to scientists, to children.

Adrian Peret


Working in the telecoms industry for 19 years, in various positions covering R&D, Technical Support, Operations, Hosting, Data Centers and Connectivity, allowed him to have a holistic view across multiple domains and their future impact across a wide range of industries. Currently working as Chief Architect Cloud in Nokia’s Mobile Networks, focused on Telco Cloud Reference Architecture.

George Mitropoulos


Member of the architecture team on Nokia (v)EPC MME and 5GS AMF. George holds a PhD in Wireless Communications and a Diploma degree from the School of Electrical Engineering and Computer Science, NTUA. 

Rafal Laszko


Cloud software engineer at Hazelcast, author of the book “Continuous Delivery with Docker and Jenkins”, trainer, and conference speaker. He specializes in Java development, Cloud environments, and Continuous Delivery. Former employee in a number of companies and scientific organizations: Google, CERN, AGH University, and more. 

Giannis Papadakis


Giannis is a Software QA Manager in Atypon with experience in Test Automation Architecture. He is a Test Automation Evangelist and mentor for various Software development teams, passionate about building high efficient tests. His passion includes alignment of cross-functional stakeholders across product lifecycle towards increased, inspire BDD/TDD method usage throughout the organization, organizing external events and workshops with well established testing communities like Ministry of Testing and GRTB (ISTQB Greek Chamber)