Marko Nikolić
@markonikoli
I build high-performance full-stack web platforms for healthcare, education, and payments.
CroatiaWhat I'm looking for
I've built telemedicine, e-learning, and payment-processing platforms at Perfsys, QED Ltd, and Triple Innovations. At Perfsys, I developed a React.js and Node.js telemedicine platform with real-time WebRTC consultations, HIPAA-compliant PostgreSQL data handling, and a GraphQL gateway connecting health records, pharmacy, and insurance services.
Across eight years in web development, I've improved page loads by 40%, increased student engagement and completion rates by 40%, reduced payment fraud by 75%, and reduced transaction routing time from three seconds to 500ms. I work across TypeScript, React.js, Vue.js, Angular, Node.js, cloud services, APIs, and databases, and I’m comfortable contributing independently or as part of a team.
Experience
Work history, roles, and key accomplishments
Senior Full Stack Developer
Perfsys
Aug 2023 - Oct 2025 (2 years 2 months)
Architected and developed a telemedicine platform for healthcare providers and patients using React.js and Node.js. Built real-time video consultations with WebRTC, implemented HIPAA-compliant data handling, and created a GraphQL API gateway. Optimized performance resulting in 40% faster page loads and 99.9% system availability.
Education
Degrees, certifications, and relevant coursework
University of Zagreb
Bachelor's Degree, Computer Engineering
2013 - 2017
Pursued a Bachelor's Degree in Computer Engineering, focusing on software development and engineering principles.
Availability
Location
CroatiaAuthorized to work in
Job categories
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