Andrew Lombardi is a veteran entrepreneur and software developer. His parents taught him to code while barely able to read on an Apple ][ he still wishes he had. He invented Nutella and the Internet (suck it Al Gore) while drinking straight coffee and staring off into space. He’s been running the consulting firm Mystic Coders for 22 years, authored a kick-ass book on Spring for Apress and WebSocket for O’Reilly, coding, speaking internationally and offering technical guidance to companies as large as Walmart and companies with problems as interesting as helicopter simulation. He firmly believes that the best thing he’s done so far, is being a great dad.

Wajdi is a computer engineer wizard, specializing in mobile technologies and parallel realities. He has published articles around these subjects in multiple blogs and magazines.

He is also a speaker at many international events. His main goal is to push the digital world forward via contributions on open source projects or via training sessions and workshops.

And just to top off his professional experience, he has worked with multiple companies like Orange, Sfeir, Twitter and many others, as a mobile team leader (with an experience in other fields like devops and web).

Wajdi is a renowned speaker presented at conferences like: Google DevFest, Appdevcon, Appbuilders, AndroidMakers/DroidCon, CodeMonsters, Mixit, etc.
He is also a bestselling author.

Alexander Schwartz is a Principal Software Engineer at Red Hat. He helps organizations and teams to make architecture decisions that match their needs. To build their software in a maintainable way, he empowers them with best practices, tools and libraries. He leads by example to adopt true agile processes and to stay curious. Ideas spark when sharing thoughts with others. Finding out if an idea works requires experimenting with code and UX. Measurable results of the experiment show if the idea worked out, and might lead to new experiments.

Radoslaw is a Senior Product Manager for Dynatrace Managed with more than 12 years of experience in APM and observability domain as a software developer and leader. He’s an Agile product development enthusiast who is always happy to help those in need. Outside of work, Radoslaw as an ex-handball player, loves sport activities and is passionate about self-development.

Kalina is an aspiring HR professional with BA in Business Management and Organizational Psychology. She has devoted their educational and professional career to the discovery of the practices that help professionals of all seniorities develop their full potential. She is currently part of the Recruitment Team in Endava Bulgaria, learning from experts in the IT field, and has worked on developing and applying effective practices for proactive talent acquisition. In addition, Kalina has also worked on and managed the internal internship programs at Endava.

Irina Marudina (@imarudina) is a software architect at DXC Technology with 20+ years of professional experience. Her project portfolio includes configurable product lines, web portals and information systems aiming zero coding effort during new client onboarding, Identity Management and Single-Sign On modules, scalable Akka Actor systems for graph data processing. Irina is a regular visitor on IT conferences and likes learning in her free time. She enjoys mentoring young developers on their way to mastery, teaching them to care for code quality and clean design.

With over twenty years of experience in software development and information security, Laura Bell specialises in bringing security into organisations of every shape and size.

I’m Paulo, and I’ve used my 15+ years of software development experience to write secure distributed system and open-source libraries for many industries. In the last 7 years, I work as core developer on open source reactive systems libraries that power high-performance systems and frameworks you may use daily. I’ve implemented one of the first FIDO2 conformant open-source libraries for the JVM and am a true believer and advocate for the use of strong security standards on the JVM.

Software engineer working at Delta Source. I’m passionate about Microservices, DevOps and Mentoring. I’ve worked mostly on high performance data-intensive applications and I’m currently more interested in Event-Driven architectures. In my free time I try to answer the question “How does this actually work?” or dabble in new technologies to further expand my horizons and relay the important parts to my team.

Petyo Dimitrov is a software engineer with 15+ years of working experience in various projects for international clients. Currently, he is a Senior Software Architect at Musala Soft. His professional focus is in Java, Enterprise Application and Integration technologies, RESTful Services, Microservice Architectures and DevOps. He also enjoys sharing his experience and new technologies he is learning with colleagues at work, students at Technical University – Sofia and on different IT conferences in Bulgaria.

David Pilato is Developer and Evangelist at elastic and French spoken language User Group creator. In his free time, he likes talking about elasticsearch in conferences or in companies ([Brown Bag Lunches AKA BBLs](https://www.elastic.co/blog/free-lunch-for-open-source-engineers)).

I am a blockchain developer, public speaker and blogger. As a self-taught coder and enthusiast for all newly brewing tech. Began programming in 2007 when I wrote my first mIRC script, and has since mastered multiple programming technologies.

Recently participated in creating blockchain solutions for big companies and has multiple mainnet projects running. At present, I am an integral part of the development team at Nexo – a leading digital finance institution. Lectured and led workshops at various blockchain conferences, reaching thousands of attendees each year, in addition to teaching blockchain courses in Singapore and the Philippines.

Joris Mertens works as Developer Advocate for IBM Z at IBM, working for the global IBM Z Ecosystem team.
His mission is getting students and young professionals engaged with the IBM Z technology, as well as helping users and clients adapt modernization patterns on the platform.
By demonstrating live coding examples and hosting workshops and hackathons, his main objective is to provide hands-on experience towards his audience.

My name is Stamo Petkov and I’m head of Microsoft Technology department in Information Services JSC. I have more than 20 years of experience in the field of information technology and а strong passion for learning and sharing knowledge with my students in SoftUni or other professionals at different conferences all over the world. I am а Senior Software Architect, especially keen on designing multitechnology, scalable web applications. I have the opportunity to be part of the team responsible for the creation of some of the most significant information systems in Bulgaria such as the National Health Information System and Unified Information System of Bulgarian Courts of Justice. I love to travel and meet different people and to spend my free time on water or in the mountains.

Nikolay Stoitsev is an engineering manager at the early-stage HealthTech startup Halo DX. He is leading a team that is reimagining the software systems for medical diagnosis to improve human health and well-being. Nikolay has an obsession with building great teams and software products. He was previously at Uber, VMware, and different startups.

My name is Ivo and I am a Java Software Engineer at Information Services JSC. I started my education and professional career in the world of commerce but after a quick programming basics course I became excited about coding. Ever since then I have put in great effort and diligence (and sleepless nights) in every aspect of the learning process. Since my programming journey began, I have worked with Java, JS, Angular, Vue and GraphTalk. I consider myself a software developer who gives his best in every opportunity , as not only do I enhance my skills and knowledge ,but I feel pleased that I have done everything I can to produce an effective and efficient product. I don’t shy away from any challenge. In the long term my ambitions are continuously getting bigger and bigger. I always do my best so that my work and effort can truly make a positive change to other people’s lives.

Hristo Hristov is a Lead Application Developer at TSD Software. Highly ambitious and progressive in his work, he is a full-stack developer with vast experience in C#, Angular, and React.
Hristo is particularly interested in emerging technologies. Being into dynamic and challenging projects, he has recently started diving into game development with the Unity Engine.
Outside of his software development duties, Hristo dedicates his free time to sports such as table tennis and street fitness, and he also loves to explore nature and read tech books.
Hristo Hristov was recognized as “Developer on Focus 2019” by DevStyler.

A well-respected presenter, highly experienced in delivering content on a broad spectrum of technologies using innovative demonstrations. Building on extensive in-depth technical knowledge, capable of engaging with all levels of technical audience from developers to executive management and press. I am looking for a role that will continue to build on my developer-focused skills whilst providing new challenges.

I have an insatiable passion for creating great and worthwhile software – the more complex and challenging it is, the better. In pursuing this passion, I’ve acquired numerous skills and deep knowledge in every area of the software development industry. I am experienced in managing products and teams in heterogeneous environments, designing and implementing processes, steering stakeholders towards short and long-term goals, handling clients and their expectations, and much more.

Mani is a Senior Polyglot Programmer, Data, ML Engineer | Java Champion | Crafter | Startups | AI/ML/DL | Speaker | Blogger

He is strengthening teams & making them accelerate using technologies at hand, while working as a polyglot software developer. Mani is also working closely with founders, CTOs, tech & research teams, building & delivering working and maintainable software & tooling.

He has over 15 years of experience as a software developer following software development principles & methodologies like BDD and TDD when writing code. Mani is strongly advocating software craftsmanship principles and practices wherever possible and applicable.

In addition to performing his role he also perform DevOps tasks, write tools i.e. for AI/ML research teams, perform Data & ML engineering tasks.

Mani has strong interests in AI, Machine Learning, Data and Data Visualisation, Graal/GraalVM/Truffle, Application & JVM Performance Tuning and Benchmarking.

In his free time, he’s constantly learning at conferences, events and workshops to gather practical hands-on experience. Being an active member of various developer communities, and participating in various F/OSS projects.

Vili is a British/Swedish-educated professional with degrees in Politics, Psychology and Computer Science and more than 10 years of strong business administrative and organizational experience in multicultural environment.
She is passionate about Project management and Organizational development.

Deyan Genovski is the CTO and co-founder of Appolica – a Bulgarian software development company with a focus on mobile app development. Deyan has over 10 years of experience in management and software development, mainly in mobile and cloud back-end. He deals with various issues – from technical and architectural point of view, to advising startups in choosing the right technology. His main driving force is curiosity and the desire to find the best solutions. In his spare time he likes to find answers to the question “How does this work?”.

I’m a software engineer with more than 10 years of experience. I’m currently a Staff Software Engineer at Tide. I’m interested in Microservices, Event-Driven Architectures, DevOps and organizational scaling.
At Tide I’ve witnessed our engineering organization more than double in size in the past year, which allowed me to see first-hand what policies enable such rapid growth.
Before Tide I spent around 8 years working in the Gambling Industry. Software systems in that industry usually process millions of financial transactions per day, being subject to even higher peak loads during sporting events and certain holidays. This has allowed me to gain experience designing and developing Software that possesses the required Availability, Performance, Throughput, Observability, Scalability, etc.

Alvaro Muñoz works as Principal Security Researcher with GitHub Security Lab team. Previously he worked as an Application Security Consultant helping top enterprises to deploy their application security programs. He is passionate about Web Application security where he has focused most of his research. Muñoz has presented at many Security conferences including BlackHat, DEFCON, RSA, OWASP AppSec EU and US, JavaOne, etc, and holds several infosec certifications, including OSCP, GWAPT, and CISSP.

Svetlin Nakov (http://nakov.com) Svetlin Nakov has 20+ years of technical background as software engineer, project manager, consultant, trainer, and digital entrepreneur with rich technical experience (blockchain, Web development, information systems, databases, cryptography, C#, Java, JS, PHP, Python). Svetlin Nakov is a regular speaker at hundreds of conferences, seminars, courses and other trainings and holds a PhD degree in computer science. He is author of 15 books about computer programming and software technologies, lives in Sofia, Bulgaria and works as an passionate trainer and inspirer at SoftUni.

Martin Kuvandzhiev is an Engineer, Innovator and Entrepreneur. He starts working as Software developer at age of 18 right after finishing high school. Martin is the Founder of GoStartups, CEO of Assetify and board member of Bitcoin Gold. His companies are oriented in fintech, healthcare and blockchain. Despite the fact that Martin runs 2 companies he still does development and is specialized in iOS development. Martin has plenty of experience in creating products from scratch and that is the reason why his topic of development is specifically for that – creating a great app architecture from the beginning.

Boris is a software-development enthusiast and a strong state-of-the-art technologies advocate. Starting to show interest in software development in the early high-school years, Boris has spent a lot of his time exploring the different types of software in order to master all their strengths and weaknesses and be able to make the crucially important decisions inevitable during every product development life cycle. This way he is able to ensure the future-proof architecture and scalability of all developed products under his leadership. Boris is currently the leading technologist in GoStartups and specializes in Android and Back-end development.