About
Highly professional Senior Full-Stack & Blockchain Developer based
in Croatia with experience.
My passion is creating world class web applications.
Senior Full-Stack & Blockchain Developer
- Birthday: 26 Sept 1992
- Website: super-dev-947.vercel.app
- City: Varaždin, Croatia
- Age: 33
- Degree: Master
- Freelance: Available
Experienced Senior Full-Stack & Blockchain Developer with 10+ years of expertise in web, mobile, NFT marketplaces, DeFi platforms, microservices, and scalable cloud-based applications. Delivered 40% faster API responses, 50% improved query speeds, and 30% reduced latency in high-traffic blockchain applications. Architected 5+ NFT/DeFi platforms securing $10M+ in staking TVL and serving 100K+ monthly active users.
Facts
Happy Clients
Projects
Hours Of Support
Awards
Skills
A complete understanding of how blockchain works and the
underlying architecture of it.
Encryption, consensus, hash function, distributed ledger,
Understanding smart contracts and blockchain and other
concepts.
And I have a wealth of knowledge and experience in programme
languages.
Resume
Summary
Marko Perković
A Blockchain Developer is knowledgeable in performing computer software's complex design, analysis, development, testing, and debugging. That is to deliver technical services or distinct product hardware. They also perform computer system selection and software design and operate architecture integration.
- super.dev.947@gmail.com
Education
Bachelor’s Degree in Computer Science
2011 - 2015
University in Split, Croatia
Professional Experience
Senior Full-Stack Developer
2022 - Present
Roombr, Bengaluru, India
Leading the development of high-performance, real-time education platforms with a focus on scalability and cutting-edge technology.
- Scaled micro-frontend architecture, improving team productivity by 35% and reducing build times by 25% using Angular, Nx, and Web Components.
- Built real-time education apps with WebRTC & Electron, supporting 50K+ concurrent users with <200ms latency.
- Optimized UI performance with Tailwind CSS & Material UI, reducing page load time by 40% (Lighthouse score 95+).
- Architected scalable micro-backend services combining Firebase, WebSockets, and Node.js, achieving 10K+ real-time messages/sec with 99.9% uptime via distributed queues and optimized connection management.
- Reduced backend costs by 30% using AWS Lambda & Redis caching, cutting API response times from 800ms to 300ms.
Blockchain & Full-Stack Developer
2020 - 2022
BetConstruct, Yerevan, Armenia
Spearheaded the integration of blockchain and Web3 technologies into a high-traffic online casino platform, driving user engagement and retention.
- Developed React/Next.js casino platform, increasing user retention by 45% and betting volume by 60%.
- Built React Native mobile app, reaching 500K+ downloads with a 4.8/5 App Store rating.
- Integrated NFT rewards & Web3 auth, driving 20% higher engagement and 15% more premium users.
- Optimized PostgreSQL & Redis, slashing API response times by 40% (from 1.2s → 700ms).
- Deployed GCP BigQuery analytics, reducing report generation time from 10min to 30s.
Blockchain & Full-Stack Developer
2016 - 2020
Arbona, Varaždin, Croatia
Built and scaled early-stage DeFi and NFT solutions, establishing a foundation for secure and efficient blockchain transactions.
- Launched cross-chain NFT marketplace, processing 5K+ transactions/day with <$0.10 avg. gas fees.
- Developed Solidity staking contracts, attracting $5M+ in TVL with 15% APY rewards.
- Built DeFi yield farming dApp, increasing liquidity pool participation by 200%.
- Cut real-time data latency by 50% using Firebase & Redis caching.
Recent Reviews
Chris T
Great. fast, professional and passionate
Smith A
I really like him. Patience, effort, positive thinking, etc. There are so many things that I like What I like the most is his ability. he is the best programmer He did what I wanted very well. I commend him and recommend him to others. If you entrust him with work, he will do everything well with sincerity.
Michael R
Easy to work with. completely hard working and doesnt stop until finished.
Vitaliy L
He's really high skilled and dedicated Developer. He always complete the project on time with perfect quality.
Yingjie Y
Good worker with quality.