David Hargitai

Full-stack engineer

A picture of David Hargitai, a Hungarian full-stack engineer

Profile Info

Accomplished Full-Stack JavaScript Engineer with extensive experience designing and developing scalable web applications for international brands and high-growth startups.

Proficient in React, Vue, and Node.js with strong TypeScript skills, I thrive in remote teams and have a proven track record of delivering robust, well-tested solutions that balance technical excellence with real-world business needs.

I continuously expand my expertise through personal projects and emerging technologies – most recently developing Creatigniter, a Next.js SaaS platform for creators, leveraging Supabase, Tailwind CSS, and workflow automation tools.

Work Experience

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Freelance Automation & AI Engineer / Full-Stack (JavaScript) Developer

Since September 2024, I have channeled my passion for technology into independent consulting and innovation:

  • Digital Marketing & Offer Creation: Spent 6 months in intensive learning and hands-on application of advanced digital marketing, campaign management, and crafting compelling value propositions tailored to customer needs.
  • Automation & AI Agent Development: As a freelance engineer, I focus on automation, integration, and intelligent agent development. I design end-to-end solutions, harnessing the latest in JavaScript, serverless technologies, and AI frameworks to automate workflows, optimize business processes, and drive digital transformation for clients.
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Born Group / Senior Front-End Engineer

Project: Universal Genève

Led the full digital rebranding project for Universal Genève, an iconic luxury watch brand under Breitling, in 2024. Collaborated with design, branding, and marketing teams to deliver a high-performance, React-based e-commerce experience reflecting the prestige of the brand.

Project: Fiorucci

Implemented a complete design and digital rebranding for Fiorucci, a globally recognized fashion brand, also in 2024. Oversaw the entire front-end React implementation, ensuring creative vision and commercial objectives translated into an engaging online platform.

Project: Vue Storefront / Alokai Integrations

Collaborated closely with the Vue Storefront (now Alokai) core team, co-developing enterprise-grade integrations. Our BigCommerce integration became the flagship demo for the Vue Storefront platform, showcasing seamless e-commerce capabilities.

Project: Orgill

Contributed to the design and build of a complex ecommerce platform for Orgill, a major wholesaler with a catalog of over 150,000 products. Leveraged Vue Storefront (TypeScript) and Elastic Path Commerce Cloud to deliver a modern, scalable platform for their dealer and customer network.

Project: Bloomreach Discovery JavaScript SDK

As lead architect and developer, I was trusted to design and spearhead development of Bloomreach’s open-source Discovery JavaScript SDK (GitHub link).

This included implementing robust, maintainable code and providing ongoing technical leadership. The project leveraged TypeScript, EJS, Sass, and incorporated extensive testing with Jest and Cypress.

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Evista Creative Agency / Senior Front-End Engineer

Working on various front-end and mobile development tasks, mostly in React, eg. an administration panel for Geia.

My biggest finished project here was an internal real estate property management system in Angular for RockHome.

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Welow Technologies / Mobile Application Developer

I was working on some Flutter mobile apps and a full-stack JS web app which was a property rating system for investors and future-buyers to be able to make a better deal.

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John Deere Slovakia (Agroservis s.r.o.) / Software Engineer Consultant

I designed and implemented a complete application using Node.js, Amazon services (S3, DynamoDB, EC2) and Webix front-end framework. Its purpose is to track the location, movement, status history and responsible persons of their machinery.

This is not a public project, I can only provide screenshots.

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Swiss Halley AG / Web Developer

Developing hotel management systems.

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Freelance Web Developer

I was taking on smaller freelance gigs around this period.

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SalesAutopilot Kft. / Programmer

Developing many types of commercial websites for small to mid-sized companies.

Latest Hobby Projects

Creatigniter

My main free-time project I started in May, 2025. It's an SaaS platform for expert creators helping them solving the most painful parts of their video creation workflow, starting with finding the right ideas.

It's built on top of Next.js (Typescript) and Supabase, using Tailwind CSS for styling. Some of the backend logic is built on n8n platform for now.

I use Git for version control and GitHub for hosting the code and automatically trigger the continuous deployment to Netlify.

This very resume

In 2023 I've spent some time re-learning the fundamentals of CSS to deepen my understanding and fill the gaps in my knowledge.

Creating this CV was a pretty fun excercise and I could use quite a lot from what I know about UI design, accessibility and modern CSS features.

All the HTML and styles on this page are hand crafted from scratch without using any kind of third-party snippets, frameworks, or even JavaScript.

What It's Like To Work With Me

I had the pleasure of managing David during his time as a Senior Frontend Developer at BORN Group. He is a highly skilled and dependable developer whose contributions were instrumental in driving our team's success and upholding our reputation as an award-winning agency.

What truly sets David apart is his admirable commitment to professional growth and his resulting versatility. He actively broadened his expertise beyond traditional frontend development into visual communication, email marketing, and e-commerce optimization. This expanded knowledge, combined with his hands-on involvement in coding, peer programming, and performance optimization, made him a uniquely valuable contributor to the innovation and quality of our project outcomes.

Beyond his technical skills, David was a vital force in building a positive and collaborative team culture. His realistic and patient approach, paired with his effective communication, fostered a supportive environment where teamwork thrived. [...]

David is a dependable and innovative professional who has my highest recommendation.

Mark Cotton

David was awesome -- he went above and beyond and saw the project through to completion. Great job! I'd definitely hire him again.

Chris Jones

Very talented with a super quick response time. He solved my custom coding problem in literally 5 minutes once we hopped on a call. David will remain on my shortlist of people to reach back out to.

Andrew Kottage

Phenomenal experience working with David. Highly recommend.

Ugulay Sloan

David did an excellent job; I received more than I expected, convinced me of his skills. [...] Smooth communication. I am not an expert, so David explained everything patiently step by step helped me understand details, even with videos. I will work with David again; I recommend him to others!

Béla Magyar

Wow, David is honestly one of the best freelancers I have ever worked with on Upwork. His communication, explanations and work far exceeded my expectations. I will 100% be using him for all my future development projects and would highly recommend him to any others needing development help.

Alex Cranton

And some more feedbacks from Upwork clients

David not only did an excellent job executing what we asked him to do for our company, but also gave it a different approach and tried to deliver more than we expected, by suggesting new features and/or ways to improve the quality of our product.

David was very easy to work with, patient and explained everything clearly in a step by step process. I am not the most technically advanced, so this was super helpful in letting me understand how everything works. I will definitely be hiring David again and would recommend him to others!