Zsolt Rácz
Verified Expert in Engineering
Software Developer
Zsolt has over 10 years of experience in full-stack development, mainly with Angular, Node.js, and Symfony. With his deep engineering knowledge, leadership experience, and holistic approach, he provides extraordinary value and understands what it takes to build stable, robust tools for extremely high-traffic use (e.g., 18 million monthly users for a video-on-demand service). Recognized as a team player, Zsolt considers himself a quick learner motivated by challenges.
Portfolio
Experience
Availability
Preferred Environment
REST APIs, JavaScript, Angular, Symfony, TypeScript, Node.js
The most amazing...
...project I've worked on was iflix (iflix.com), a video streaming platform with more than 18 million active users.
Work Experience
Senior Engineer
Proximus
- Contributed to the development of a desktop application for the customer support of Belgium's largest telco. Worked in an agile team, delivering new features and bug fixes.
- Created a responsive front end from scratch based on UI mockups. The application is used by the customer service department to support millions of clients.
- Set up and maintained development pipelines in GitLab to improve the team's efficiency.
- Conducted over 10 technical interviews and developed the screening process and technical exercises.
Software Engineer
iflix
- Participated in the development of a video-on-demand service with more than 18 million monthly active users.
- Collaborated with an agile team on subscription and payment management while cooperating with engineering teams distributed worldwide as a software engineer on the project.
- Designed and implemented an order queuing system to support high load scenarios exceeding 80 transactions per second.
- Implemented new microservices for integration with external partner APIs.
Software Developer
Kendaxa Development
- Led the API development of a shift planning tool used by a German telecommunications product distributor with 700 employees.
- Collaborated with the product owner and suggested improvements for the long-term vision, leading to a 30% reduction of development time and a 50% reduced server load.
- Suggested and implemented improvements in the security, performance, and architecture of the application.
- Participated in the development of smaller eCommerce projects.
Web Developer
Ticketware SE
- Participated in information system analysis, design, and development based on PHP, Symfony 2, Doctrine, and Angular 2.
- Created a mobile application for ticket scanning through a bar code reader or camera. The application was developed using NativeScript and Angular 2 and supports Android and iOS.
- Developed a comprehensive comparison of cross-platform mobile technologies based on the selected core technology for the project.
- Built software for content distribution and playback on display panels in cinemas.
Web Developer
Maxi Mark
- Architected and implemented a fitness center management system that generated a turnover of €1.5 million in the first year.
- Created over ten dynamic and responsive websites, all of which were custom-tailored by a graphic design expert.
- Set up the internal company server and introduced the use of version control.
Web Developer
eN Net
- Constructed, using PHP, MySQL, and JavaScript, five websites for various businesses.
- Managed the administration of Linux-based web servers running 30 websites.
- Set up and maintained a gaming portal and game servers for hundreds of players.
- Implemented network monitoring and an alerting system using Nagios.
Experience
Website and E-shop for TAM Autohof
https://autohof.sk/enI was in charge of the solution design and implementation of their website. Eventually, an e-shop was added to the website. It was integrated with the company's customer reward system and handled orders from thousands of registered members.
The site is built on PHP and Symfony; WordPress handles the CMS functionality and administration interface.
OnlineFit: Fitness Center Management Application
https://www.onlinefit.sk/enAs the full-stack engineer, I designed the entire architecture of the solution and provided operations and support for over a year.
Main features of the system:
Booking management for group training, online payments, invoicing, stock management, website creator, support for multiple clients in different locations, and built-in business analytics tools.
Emplaya: Workforce Management Tool
Skillset
Languages
HTML, HTML5, PHP, JavaScript, CSS, SQL, TypeScript, C++, C, GraphQL, Java, SCSS
Frameworks
PHP MVC, Express.js, Symfony, Angular, NativeScript, Ionic, NestJS, Bootstrap, Laravel, Qt, Jasmine, Electron, CodeIgniter
Paradigms
RESTful Development, Agile Software Development, Metaprogramming, Scrum
Other
API Integration, APIs, Web MVC, Third-party APIs, Web Development, User Interface (UI), Software Design, UML Diagrams, Task Management, Networks, WebSockets, Software Engineering, Engineering, Technical Hiring
Libraries/APIs
Node.js, HTTP API, REST APIs, Google Maps API, Doctrine 2, jQuery
Tools
Git, NGINX, Jira, Confluence, Nagios, Jenkins, Amazon Simple Queue Service (SQS), Docker Compose
Platforms
Docker, Linux, Debian Linux, Apache2, Magento, Kubernetes, Amazon Web Services (AWS), WordPress
Storage
PostgreSQL 10, MySQL, Redis, Amazon S3 (AWS S3), PostgreSQL
Education
Master's Degree in Informatics
Technical University of Košice - Košice, Slovakia
Bachelor's Degree in Informatics
Technical University of Košice - Košice, Slovakia
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