Hello, I'm
Ferenc Papp
Senior Full-Stack Developer & AI Solutions Engineer
Building scalable web ecosystems and production-ready AI integrations. Since October 2024 I work dedicatedly with DataExpert and its sister company Rubiklab on flagship projects — pairing full-stack engineering (Laravel, Vue.js, Python) with applied generative AI and large language model systems.
About Me
Who I Am
I'm a senior full-stack developer and AI solutions engineer based in Debrecen, Hungary, with over 15 years of professional experience. I design robust, scalable web applications and engineer production-grade generative AI systems — combining traditional full-stack development with the latest LLM technologies.
Since October 2024 I work dedicatedly for a tightly knit group of companies: DataExpert (the parent company) and Rubiklab (its sister company). At DataExpert I architect and build scalable, high-performance Progressive Web Apps on a Laravel backend and Vue.js frontend, backed by Python scripts and microservices.
At Rubiklab I work as a Senior AI Solutions Engineer on generative AI integrations and R&D — including their in-house LabIQ product. My focus areas include fine-tuning and benchmarking large language models, semantic search with vector databases and embeddings, LLM-based multi-class classification, and tuning generative AI hyperparameters (temperature, top-k/top-p) for reliable, deterministic behaviour.
What I Do
Services
Scalable Web Ecosystems
High-performance web applications and Progressive Web Apps. Laravel backend, Vue.js frontend, Python scripts and microservices. Clean architecture, tested code, built to scale.
Production-Ready AI Integrations
LLM-powered features that ship, not demos. RAG pipelines, semantic search, vector databases, embeddings and agentic workflows — reliable, observable and integrated into real product workflows.
Generative AI R&D
LLM fine-tuning and benchmarking, embeddings-based search, LLM-driven multi-class classification, and hyperparameter optimization (temperature, top-k/top-p) for deterministic, repeatable output.
Technical Consulting & Partnerships
Architecture reviews, AI strategy, technology selection and performance optimization. Selective, high-impact engagements for teams building serious web or AI products.
Technologies
Tech Stack
AI & LLM
Backend
Frontend
DevOps & Tools
Mobile & PWA
Career
Experience
2024 – Present
Senior Full-Stack Developer
DataExpert
Architecting and building scalable, high-performance Progressive Web Apps for flagship projects. Laravel backend, Vue.js frontend, Python scripts and microservices.
2024 – Present
Senior AI Solutions Engineer
Rubiklab
Generative AI integrations and R&D, including the in-house LabIQ product. LLM fine-tuning and benchmarking, semantic search with vector databases and embeddings, LLM-based multi-class classification, and hyperparameter optimization (temperature, top-k/top-p) for deterministic output.
2017 – Present
Full-Stack Developer & Technical Consultant
Self-employed (Sole Proprietor)
My independent practice as a sole proprietor: custom web applications and AI integrations — LLM-powered features, RAG pipelines and vector search — plus survey systems for market research clients across the EU and US.
2015 – 2017
Senior PHP Developer
Fathom Minds
Led web app and API development with Yii2. Set up Git infrastructure for the development team.
2014 – 2015
Frontend Developer
Oktafone
Startup web application development with AngularJS, JavaScript, HTML5, and CSS3.
2011 – 2014
PHP Developer
Freelancer (pappfer.hu)
Built websites for individuals and companies using PHP, Yii, Laravel, and WordPress. Facebook, LinkedIn, Box.com, and Stripe integrations.
2011
Service Desk Analyst 2nd Line
British Telecom
Configured network devices (routers, switches) for global network support. Communicated with clients worldwide in English.
2010 – 2011
Contact Center Server Administrator
IT Services Hungary
Linux and Windows server administration, Avaya IP phone management. Co-developed a PHP automation tool saving 3+ hours/day — received innovation award.
2009 – 2010
PHP Developer
Concept Solutions
Remote PHP development. Maintained and improved existing codebases, gaining experience with diverse architectures and implementation patterns.
What Clients Say
Testimonials
Reliable and fast. We have been working with him for years. He built several of our websites from scratch. I can only recommend him.
Excellent developer and very easy to work with. Great knowledge of PHP frameworks, excellent English and very good communicator, and very reliable.
Ferenc is a very talented developer. He quickly got to grips with what was required and delivered everything (and more) that I expected. I would happily work with him again.
Common Questions
Frequently Asked Questions
Get In Touch
Contact
Building something ambitious in web or AI? Let's talk.