JavaScript experts, mentors, speakers

Currently, Robert Hostlowsky is working as a developer, coach and systems engineer. He published an online video course about developing a full-stack GraphQL application online-course. He loves DevOps culture on modern cloud infrastructure, uses the latest state-of-the-art web technologies, and loves how it plays nicely together at minimum effort and cost. He loves web technologies. Feeling being a part of the developer community he is co-organizing the JSCraftcamp, Munich.

Bob is CEO and co-founder of SeMI Technologies, the business created around the open-source vector search engine Weaviate. Besides SeMI and Weaviate. Bob is a frequent speaker on the topics of open source, digital technology, software business, and creativity. He has spoken at around 100 events on the aforementioned topics in Europe, the US, and Russia.

I am a strong full stack developer, and a Ruby on Rails enthusiast. I'm passionate about formalized SDL processes, and clean, well-tested code. Having worked on the monolith that is the Words With Friends backend service at Zynga, I've architected, developed and deployed features that have been used by millions of concurrent users. I'm a huge supporter of University of Toronto, and an Arbor Award recipient. I guest lecture when I can, mentor students through the Alumni Mentorship program, and volunteer at numerous interview prep workshops, panels, and networking events for students.

Nick Teets is a software developer and musician based in Denver. Nick found his passion for connecting people using technology after spending summers in the Sandhills of Nebraska establishing a multimedia journalism nonprofit. Through an interactive website, the project told the stories of the communities of the area with audio, video, photos, and text. This early foray in journalism taught him about the intersection of empathy, technology, and storytelling, and would lead him to a career in frontend software development, creating beautiful and accessible user experiences to connect people across the world.

Roy Tal is a cloud and DevOps enthusiast who loves to build tool that will make infrastructure operations better for everyone. Today he is a team leader and founding team member at Firefly who are helping solve infrastructure drift in large-scale cloud operations. Before that he served as a backend developer at Dome9, building better security practices into cloud operations, that has been acquired by Check Point.

Software Engineer @Sentry

Andrew Murphy started his career as a Software Engineer but, after a decade in technology leadership, he decided to focus on teaching the skills that he learnt the hard way. When he moved into leadership there was no support, so he had to make all the mistakes (a lot of them!) and learn from them. His goal is now to make sure that tech leaders don’t have to do things the hard way by providing them with the mindsets and skillsets that can make them happy, confident and effective leaders. His company, Tech Leaders Launchpad, currently focuses specifically on the new and emerging leader space, as that's the place we can have the biggest impact on the students, and the industry.

Lean Vilas is a Senior Software Engineer, Team Lead, and mentor with over a decade of experience helping developers grow into confident, high-impact contributors. Known for blending technical expertise with a deep focus on people, he teaches software engineers how to navigate career transitions, especially the leap from individual contributor to engineering manager. Through his newsletter From IC to EM and conference talks, he shares practical, human-centered leadership insights that resonate with devs who want to lead without losing themselves.

Hello, my name is Shivakant Shukla, and I am a MERN stack developer with four years of experience in creating dynamic and user-friendly web applications. My passion for technology, coupled with a strong foundation in front-end development, has been the driving force behind my career. In the realm of Front-end development, I excel in crafting interactive and responsive user interfaces using technologies such as React, Redux, JavaScript, HTML5, and CSS3. I take pride in my ability to transform design concepts into functional, pixel-perfect websites that provide exceptional user experiences. Whether it's optimising performance, ensuring cross-browser compatibility, or enhancing accessibility, I am committed to delivering high-quality front-end solutions. While my primary expertise lies in front-end development, I have had the opportunity to work with back-end technologies like Node.js, Express.js, Nest.js, and MongoDB.

Hadar is the co-founder and CTO of Myop, a developer-first platform transforming how UI and UX are built, controlled and optimized in production. Hadar brings over 15 years of hands-on development experience and a deep focus on frontend infrastructure. Over the past decade, he’s led engineering teams at some of Israel’s top tech companies. At Wix, Hadar served as an architect and then head of the frontend guild, managing over 700 developers and helping shape the company’s core frontend systems. Prior to that, he held senior R&D leadership roles at Jive Software and Rafael, driving large-scale frontend development across complex products. A Unit 8200 alum, Hadar brings not only technical depth but also a strong understanding of organizational scale, cross-team architecture, and how to evolve legacy systems. His experience spans both building systems from scratch and leading long-term frontend transformations in high-growth environments.

Nica Mellifera (She/Her) was a developer for seven years before moving into developer relations. She specializes in containerized workloads, serverless, and public cloud engineering. Nica has long been an advocate for open standards, and has given talks and workshops on OpenTelemetry and Kubernetes architecture.

Erik van der Voort has been working in Information Technology for over 25 years now. Starting as a developer, he moved to other roles like technical and functional designer and project- and portofolio-management. Quite some years ago, he discovered engineering was what made him really happy so since then he has been working in several Ops- and DevOps-roles within ING. For the past five years Erik is one of the engineers within the Fruitloops-team. This team of engineers mainly focuses on building and deploying front-end applications on a global scale within the company.

Robert is a Ruby developer specializing in APIs, application design, and performance. Besides maintaining GraphQL-Ruby, he enjoys fermenting anything he can get his hands on.

Marco is a Data Scientist at the Samsung R&D Institute UK. Outside of work, he is a maintainer of pandas (data wrangling platform for Python widely adopted in the scientific computing community) and author of nbQA (code quality tool for Jupyter Notebooks). He holds an MSc in Mathematics and Foundations of Computer Science from the University of Oxford.

Matt is a Product Evangelist at Tyk passionate about API management, development, and architecture. Matt has worked as a developer, tech lead, and architect for some of the largest financial institutions and insurers in Canada. He is always dabbling in the latest tech and applying this to his own ventures in technology.

I co-founded Semble after witnessing the challenges of a fragmented healthcare system first-hand. Driven by a desire to create meaningful change, I joined forces with my fellow tech entrepreneur and friend, Christoph Lippuner, who had also seen the impact of disconnected care. Leveraging our experience as tech entrepreneurs who had successfully exited their first start-up, we collaborated closely with doctors and healthcare staff to design an interoperable, all-in-one clinical system that truly meets their needs and enables them to amplify their impact. Today, Semble supports thousands of healthcare professionals across more than 77 specialities, helping to improve care for over 8 million patients.

Emily is a lead software engineer based out of Pittsburgh, USA. She's a lifelong learner, adjunct professor, and IoT enthusiast. Emily has a tech background in healthcare, robotics, and more recently, bringing local food to the masses at Harvie. In her spare time, you can find Emily working on her web agency startup, scuba diving, or trying her hand at landscape photography.

As a developer advocate and technical writer at Buddy, Tom takes his love for communication and passion for technology and uses them to break down complex ideas into bites that everyone can swallow. Having worked directly on open-source projects, he is equally passionate about the front and the back-end - be it React, Go, or Kubernetes. In his spare time, he's a guitar-wielding amateur musician who dreams of recording a platinum album.

I've been working as a business and system analyst on a significant amount of projects in different industries: government services, retail, manufacturing, telecommunications, energy, EDI, and fintech. And it grants me an outstanding possibility to improve both sides of the process: how it works from a business perspective and how it could be automated or digitalized with IT capabilities. No matter where I’m working, I passionately follow my value of trustful relationships. For me, that means honest feedback, business transparency, a strong brand personality and attentiveness to details.

Software engineer with 10+ years of Java and Golang development experience. Working with large-scale test infrastructure during last 7 years. Maintaining a big Selenium cluster with 5000+ parallel browsers.

I encourage others to see different perspectives and constructively break the rules. Observe - Optimize - Learn - Repeat is my work and life motto. Next to it, I found my joy in building and optimizing end-to-end Machine Learning Systems. Principal Data Solutions Engineer @ LINKIT Organizer (volunteer) @ PyLadies Amsterdam WaiACCELERATE Tech Mentor (volunteer) @ Women in AI

Yama is a data scientist at MyPart, an Israeli startup in the music industry, developing algorithms and researching lyrical and musical song features. In her spare time, she gives tech talks at conferences and meetups (Geektime Code, PyData Tel Aviv, IsraelClouds); and mentors a group of developers through their first steps in the data science world as a part of Baot - Israel’s largest community of senior female engineers and computer scientists. Yama has a B.Sc in mathematics and physics from Tel Aviv University where she also expresses her passion for music by playing the saxophone in the TAU Wind Band.

By day, Maarten supports front-end teams at Essent with their Accessibility and Design System challenges. By night, he tinkers with the Web Platform.

Sam is the cofounder/CTO at Oso working on making security more accessible for developers. Sam previously got a PhD in Cryptography and was a contributor to TLS 1.3