JavaScript experts, mentors, speakers
Explore personalities and their talks, workshops, videos, and articles. While we focus primarily on JavaScript and frameworks like React, Vue, Svelte, and Node, you may find experts on other fields on our Portal. To name a few – Testing, DevOps, Machine Learning, and many more!

Sarah Rainsberger
Astro, Canada
Sarah Rainsberger leads a large open-source software documentation project with several maintainers and over 1000 community contributors. She brings a background in high school mathematics education, academic counseling, and curriculum development to her current technical writing and open source community building. She lives in Atlantic Canada with her husband J. B. (Joe). In her spare time, she photographs birds.

Lena Reinhard
Executive & Leadership Coach, Germany
Lena Reinhard (Website, LinkedIn) is an engineering leadership coach, mentor, and organizational developer supporting technology leaders in growing themselves and succeeding in the complexity of engineering organizations. Previously, Lena served as VP Engineering with CircleCI and Travis CI, and a SaaS startup co-founder & CEO, and has dedicated her career to helping leaders and their organizations excel in times of high change and challenging markets. She has worked with a broad variety of companies at all stages, from startups pre-founding and bootstrapped, scale-ups, to late-stage/pre-IPO and VC-funded ventures, to corporations and NGOs. Find her writing on leadership and more about her work at lenareinhard.com.

Tiki Lobel
Rapyd, Israel
Tiki Lobel is a fintech software developer who leads a team at Rapyd to liberate global commerce and connect the world’s disparate payment systems into a single integrated network. Her team focuses on core API development and Tiki’s ability to handle multiple projects simultaneously, and her understanding of complex dependencies within a larger system, make her an integral part of all product development in the company.

Marissa Masangcay
Cloudinary, USA
Marissa Masangcay is a Technical Marketing Specialist for Cloudinary and has worked for the company since 2017. She has also served as one of Cloudinary’s Developer Support Engineers, where she responded to customers’ technical support requests and feature-related questions, as well as debugged customer issues and wrote code samples in multiple development frameworks. She has also served as a volunteer instructor for Girls Who Code, which is a nonprofit dedicated to teaching girls in grades 6-12 the fundamentals of coding. Marissa graduated with her bachelor’s degree in computer science from the University of San Francisco.

Richard Davison
AWS, Sweden
Richard is a Sr. Partner Solutions Architect at AWS focusing on Application modernization using Serverless and Containers. During his 3-year tenure at AWS he has played a pivotal role assisting partners & customers in various industries with their cloud adoption and modernization strategies. Richard collaborates with the development teams and engineering leaders to optimize software delivery in the cloud, emphasizing best practices and AWS's capabilities.

Dirk-Willem van Gulik
The Netherlands
Dirk-Willem van Gulik is one of the internet engineers behind the world wide web and of the founding fathers of the apache web server. He was the President of the Apache Software Foundation during its first 10 years. He has worked for the Joint Research Centre of the European Commission, the United Nations, telecommunications firms, several satellite & space agencies and founded several startups. He participated in different international standards bodies, such as the IETF and W3C on metadata, GIS, PKI, Security, Architecture and Internet standard since the early days. He build the initial engineering team at the very first ‘webserver’ startup: Covalent, helped make big-data and the semantic web reality at Asemantics and created the first first instant play P2P viewer at joost.com. He was the Chief Technical Architect at the BBC where he shaped the audience facing development-delivery platform Forge in the time for the 2020 Olympics and where he made information security and compliance a core enabler for business processes. He provides technical due diligence to investors and assists companies with their technology; taking an (interim) CTO role where needed. He currently works on several medical and privacy intensive security projects with a heavy emphasis on Architecture and Governance. During the Corona crisis he assisted the Ministry of Health of the Netherlands, the EU and the UN with the `CoronaMelder'; where opensource, cryptography and security-by-design helped build trust. And, more recently has spend waay to much time in Brussels on the Cyber Resilience Act (CRA) and the Product Liability Directive (PLD) as Europe brings in significant regulation of IT and Open Source. When not at work, he loves to sail or hang out with the lovely people at his local https://makerspaceLeiden.nl.

Phil Hawksworth
Deno, UK
Phil is Head of Developer Relations at Deno.
With a passion for browser technologies, and the empowering properties of the web, he loves seeking out ingenuity and simplicity, especially in places where over-engineering is common. After 25 years of building web applications for companies such as Google, Apple, Nike, R/GA, and The London Stock Exchange, Phil has worked to challenge traditional technical architectures in favour of simplicity and effectiveness. Phil is co-author of “Modern Web Development on the Jamstack” (O’Reilly, 2019).

Jeff Hoffer
Rollbar, USA
Jeff Hoffer is the Technical Leader for Growth at Rollbar, working to improve Rollbar's current products and assist in developing new products that engage customers by bringing Continuous Code Improvement tools to where they are. With over 20 years of experience developing software for startups and enterprises, scaling to Internet traffic, building and maintaining commercially licensed products, and developing internal enterprise tools, Jeff has worked as a Software Engineer, Software Architect and in Director and VP roles leading technology organizations at Intuit, The Bouqs Company, Lunchbox (acquired), Accordent (acquired by Polycom) and Countrywide along with consulting work at many other prominent firms. Jeff has a passion for software development which is why he loves working at Rollbar so much with the focus on improving the professional lives of developers and the strong engineering culture.

Sam Stepanyan
OWASP London Chapter Leader, UK
Sam Stepanyan is an OWASP London Chapter Leader and an Independent Application Security Consultant with over 20 years of experience in the IT industry with a background in software engineering and web application development. Sam has worked for various financial services institutions in the City of London specialising in Application Security consulting, Secure Software Development Lifecycle (SDLC), developer training, source code reviews and vulnerability management. He is also a Subject Matter Expert in Web Application Firewalls (WAF). Sam holds a Master’s degree in Software Engineering and a CISSP certification.

Will Voelker
Aldeia, Portugal / UK
Will divides his time between web development and teaching, and has ever since 2005, when he started his web development career removing duplicate data from his friend's map-based property search app. Since then he has coded and taught in diverse contexts, from national newspapers to the shores of the Atlantic ocean. A qualified school-teacher, he is nevertheless passionate about alternative forms of education. He has spent the last two years researching and building his home-ed support platform, Aldeia (using React, obviously).

Miroslav Malecha
Bonitoo, Czech Republic
Miroslav Malecha is Director of Product management at Bonitoo.io. He has a background in computer science and has been focused on defining software products in data science, enterprise architectures and cloud computing. Prior to joining Bonitoo, Miroslav held product management positions at Good Data and Hewlett-Packard Software. When Mirek is not working, you can find him speeding down hills on his ebike in the forests near Prague.

Kristina J. Robinson
Influxdata, USA
Kristina J. Robinson is a Software Engineering Manager at InfluxData. With over 20 years of software development experience, she is thrilled to be a part of the InfluxData UI team. Most recently, Kristina spent time in the financial tech sector working as front-end developer. Kristina graduated from Rice University with a degree in Computational and Applied Mathematics. She currently lives in San Antonio, TX, with her husband and teenage son, and has another son in college. She also has two cats, and fosters dogs and cats frequently. She plays video games with both her boys. She reads voraciously, enjoys paper crafts and knitting, and plays several musical instruments.

Kritiketan Sharma
Shine Solutions, Australia
Kritiketan (aka Kittu) is a Managing Consultant at Shine Solutions, and have been building consumer facing applications for a decade. He is passionate about knowledge sharing, developer experience and web development. He believes technology should simplify lives and make them better. He is getting closer to finding the world's best sandwich.

Vitali Shchur
Check Point Software, Georgia
I am an experienced Quality Assurance (QA) engineer with over 10 years of experience in testing web applications, mobile apps, and desktop platforms (Windows, macOS, iOS, Android, Linux). I contributed to the growth of a startup from 25 to 250 employees, leading to its sale for $0.5 billion. I have worked at companies like Check Point Software and Perimeter 81, focusing on testing, creating test cases, analyzing specifications, and cross-platform testing. My extensive background spans product and outsourcing companies in cybersecurity, fintech, and education. I am also eager to share advice on career development in QA.

Jennifer Gray
Shopify, Canada
Jennifer is a front end developer on the Docs and API Libraries team at Shopify where our goal is to make it easier for developers to build on Shopify’s platform by creating and curating technical resources. Jennifer has spent the last two years working on shopify.dev, Shopify’s home for developer documentation.

Francisca Beatriz Medina Concha
LATAM Airlines, Chile
Professional designer, web developer (freelance), business analyst (Cencosud) and teacher (PUC).
Specialized in graphic design, UX/UI, and web development, I have garnered experience in both corporate and educational sectors. As an active volunteer at JSConf Chile, Fundación Antonia, Technovation Girls, and Women Who Code, I am recognized for my communication skills, leadership, and commitment to inclusion in STEAM. I possess a proven track record in teaching and simplifying complex technical concepts. My active participation in tech communities and a unique perspective on user interaction design position me as an influential voice in merging algorithmic art with programming, particularly in JavaScript.

Andrew Murphy
Tech Leaders Launchpad, Melbourne, Australia
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.

Ian Schwartz
Cargurus, USA
Ian Schwartz is a Principal Developer at Cargurus with nearly a decade of experience in JavaScript, and more recently, TypeScript. His passion lies in functional programming, which he loves to integrate with React to build robust and scalable web applications. With a strong background in modern JavaScript frameworks and libraries, He is dedicated to pushing the boundaries of what's possible in web development while fostering a collaborative and innovative environment. He has a dog that looks like a cow.

Shivakant Shukla
Mphasis, India
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.




