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Zeljko K. Blockchain, Ethereum and Smart Contract Platforms

My name is Zeljko K. and I have over 9 years of experience in the tech industry. I specialize in the following technologies: Blockchain, Blockchain Development, Ethereum, Solidity, Smart Contract, etc.. I hold a degree in Master of Information Technology (MIT). Some of the notable projects I've worked on include: Presale Affiliate Platform on Ethereum & Solana, Dolomite Margin Smart Contracts Deployment on Berachain Testnet, Real-Time Polygon Blockchain Oracle Data Monitor with Telegram Alerts, NEAR Smart Contract Integration with RabbitMQ and Agentic Backend, New Crypto Token - Solidity - ERC20, etc.. I am based in Varazdin Breg, Croatia. I've successfully completed 13 projects while developing at Softaims.

My passion is building solutions that are not only technically sound but also deliver an exceptional user experience (UX). I constantly advocate for user-centered design principles, ensuring that the final product is intuitive, accessible, and solves real user problems effectively. I bridge the gap between technical possibilities and the overall product vision.

Working within the Softaims team, I contribute by bringing a perspective that integrates business goals with technical constraints, resulting in solutions that are both practical and innovative. I have a strong track record of rapidly prototyping and iterating based on feedback to drive optimal solution fit.

I'm committed to contributing to a positive and collaborative team environment, sharing knowledge, and helping colleagues grow their skills, all while pushing the boundaries of what's possible in solution development.

Main technologies

  • Blockchain, Ethereum and Smart Contract Platforms

    9 years

  • Blockchain

    2 Years

  • Blockchain Development

    5 Years

  • Ethereum

    8 Years

Additional skills

  • Blockchain
  • Blockchain Development
  • Ethereum
  • Solidity
  • Smart Contract
  • Smart Contract Development
  • JavaScript
  • Python
  • Crypto Wallet
  • Laravel
  • API
  • API Integration
  • Web Application
  • Payment Gateway Integration
  • API Development

Direct hire

Potentially possible

Previous Company

Prilika dana d.o.o.

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Experience Highlights

Presale Affiliate Platform on Ethereum & Solana

Developed a presale affiliate platform with automatic commission distribution via smart contracts. Built Solidity and Rust contracts for Ethereum and Solana, a Node.js backend, and a React dashboard.

Dolomite Margin Smart Contracts Deployment on Berachain Testnet

Assisted in deploying a forked version of the Dolomite Margin protocol to the Berachain testnet. Resolved issues in the original deployment scripts by adapting Truffle migrations and configuration for

Real-Time Polygon Blockchain Oracle Data Monitor with Telegram Alerts

Built a Python script to monitor UMA oracle queries on the Polygon blockchain in real-time. The tool tracks a list of transaction hashes and sends Telegram alerts when a proposal is submitted. It deco

NEAR Smart Contract Integration with RabbitMQ and Agentic Backend

Developed Rust-based smart contracts on the NEAR blockchain to store hashed entity states from a hierarchical memory system. Built a Node.js backend that reads messages from RabbitMQ, hashes the data,

New Crypto Token - Solidity - ERC20

MemberBeat Token (MBT) is an ERC-20 token on EVM-compatible networks. Users receive MemberBeat Tokens when they subscribe to the MemberBeat Subscription Manager. Each time a user subscribes to a plan,

Education

  • Faculty of Organisation and Informatics, Varazdin, Croatia

    Master of Information Technology (MIT) in Designing IT Systems

    1999-01-01-2006-01-01

Languages

  • English (Fluent)✓
  • Croatian (Native or Bilingual)