Tibor Z.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Seasoned Full Stack Developer with 8+ years of technical operations, web technologies, back-end languages, database management, and leadership experience. Recognized for flair in optimizing system architecture and establishing effective troubleshooting techniques to ensure continued success. Professional focal points include technical proficiencies, data analysis, communication skills, industry expertise, and the ability to adapt to ever-changing situations in a fast-paced environment. Built independent problem-solving, leadership, time management, project management, testing and debugging, security awareness, API integration, and resource allocation expertise over the years. My last position was as a Full Stack Developer using MySQL + NodeJS + ReactJS stack on AWS Cloud with TreatCoin, an affiliate marketing platform. Utilizing my vast industry experience to manage a team of high-performing associates and lead the development and launch of the platform. While optimizing system architecture within the AWS Cloud environment, I demonstrated proficiency in various AWS technologies, including Lambda, Amazon S3, Amazon SQS, Route 53 DNS, Amazon CloudFront CDN, Amazon API Gateway, AWS WAF, Amazon EC2, Auto Scaling, and Amazon EventBridge, enabling me to effectively configure and deploy system components in alignment with stringent specifications. Explored many more tools/technologies (Python, Java, Bash, PHP, Zabbix, Qualys, Wowza Streaming Engine, etc.) besides numerous non-technical aspects (finance, legal, outsourcing, regulatory, and tax optimization, to name a few) as a startup founder. Colleagues describe me as a progressive, driven, down-to-earth, technical, and managerial expert who can be relied on to offer superior solutions that deliver profitable results on time and under budget.