I'm a software developer based in Luxembourgwith a strong foundation in web development, cloud technologies, and AI-driven automation. I've built and shipped 10+ projects using React, Node.js, Python, and AWS, worked as a JavaScript Developer at Cosup Gaming, and led backend operations while managing a technical team at KyraSMS.
I've delivered automation and marketing systems for 6-figure eCommerce stores and a logistics agency, including email and SMS workflows. I hold the AWS Certified Cloud Practitioner certification and am currently pursuing the AWS Solutions Architect – Associate.
Fluent in English, French, and Czech, I focus on building user-friendly applications and production-ready automation systems that solve real business problems.
React, Next.js, JavaScript, TailwindCSS
Node.js, Python, Flask, SQL, MySQL
AWS Lambda, S3, SES, Docker
n8n, Make.com, Zapier, Webhooks
Git, GitHub, Collaborative dev
HTML5, CSS3, REST APIs, OAuth
Airwallex, PayPal, Stripe
Google OAuth, secure data handling
Full-stack web applications using React, Next.js, and modern JavaScript. From responsive UIs to scalable backends.
Custom automation workflows for payments, data processing, and business operations using cloud technologies.
Secure backend solutions with Python/Flask, Node.js, and database management for scalable applications.
Architected a high-performance, AI-driven email marketing engine for a large-scale e-commerce company — complex n8n segmentation and trigger logic, high-volume SendGrid delivery, and hyper-personalized customer journeys with dynamic product recommendations. Built to lift conversion rates while cutting manual marketing overhead.
An AI deal scanner for a UK property-sourcing firm: webhook intake, an Airtable deal database, and a Make.com workflow that scores every property out of 10 — BMV, yield, BRRR and HMO potential — via OpenAI, delivering a daily top-20 report and a simple review dashboard.
Built and deployed a complete CRM system for 6-figure e-commerce stores to recover abandoned cart leads and drive revenue recovery at scale.
Comprehensive payment automation that streamlines expense reimbursement, reducing manual processing time by 90% through multi-provider integration.
Responsive site for a real estate photography agency showcasing services and portfolio with high-performance design.
Automated login and posting system with AI-generated content using the OpenAI API and scheduled automation.
Integrated click-to-call solution embedded in an outreach system, empowering sales teams to connect instantly.
Hynek is a top-class professional who worked hard to get every detail right for me. He consistently went above and beyond expectations and delivered work to a very high standard.Throughout the project he kept me fully up to date with progress, which made the whole process clear and easy to follow. I adjusted and refined the requirements several times, and he handled every change professionally without any issues — responsive, adaptable, and focused on achieving the best outcome.A reliable and skilled individual who takes pride in his work. I would have no hesitation in recommending Hynek, and I hope on my next project I can use his skills and knowledge again.
I'm always interested in new opportunities and exciting projects. Whether you have a question or just want to say hello, I'd love to hear from you.