Žiga Flis

Chief Technology Officer &
Blockchain Developer

Architecting secure decentralized systems and leading engineering teams from Ljubljana, Slovenia.

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About

I'm a technology leader with nearly a decade of experience spanning system administration, full-stack development, and blockchain engineering. I specialize in building secure, scalable decentralized applications and leading engineering teams.

Currently serving as Chief Technology Officer, I lead cross-functional teams in delivering production-grade blockchain solutions. My work spans smart contract architecture, security auditing, and front-end integration for decentralized applications.

Before moving into blockchain, I built my foundation in system engineering and IT infrastructure — experience that informs how I approach reliability, security, and operational excellence in everything I build.

Ljubljana, SloveniaAvailable for consulting

Experience

Chief Technology Officer

Full-time · Oct 2021 – PresentCurrent

  • –Lead and mentor a cross-functional development team delivering production-grade blockchain solutions
  • –Establish and enforce security best practices across all development processes and smart contract deployments
  • –Architect and develop production-grade smart contracts for decentralized applications
  • –Oversee front-end integration strategies and ensure seamless blockchain connectivity
  • –Drive technical strategy and make critical architectural decisions for product development
BlockchainSoliditySmart ContractsSecurityTeam Leadership

Owner & Full-Stack Developer

Self-employed · Feb 2020 – PresentCurrent

  • –Design and develop responsive front-end applications using React and modern JavaScript frameworks
  • –Build and maintain custom WordPress solutions for enterprise clients
  • –Create secure smart contracts using Solidity for blockchain applications
  • –Develop scalable backend systems and APIs using Node.js
  • –Deliver advanced IT solutions and blockchain consulting services
ReactWordPressSolidityNode.jsBlockchainConsulting

Information Technology Specialist

Part-time · Sep 2019 – Jan 2022

  • –IT infrastructure management and VPN technology implementation
IT InfrastructureVPNNetwork Security

Smart Contract Developer

Part-time · Sep 2019 – Jan 2022

  • –Developed blockchain solutions using Solidity and Substrate frameworks
  • –Architected and implemented DAO governance systems and smart contract infrastructure
  • –Integrated Web3.js with React front-end applications for seamless blockchain interactions
  • –Managed smart contract deployments and implemented comprehensive security protocols
SoliditySubstrateDAOReactWeb3.js

Lead Developer

Contract · Apr 2021 – Dec 2021

  • –Designed and developed fully decentralized Initial DEX Offering (IDO) smart contracts
  • –Led a development team through the complete software development lifecycle
SoliditySmart ContractsIDOTeam Management

Smart Contract Developer

Full-time · Jan 2020 – Mar 2021

  • –Developed RiveX ecosystem smart contracts using Solidity
  • –Integrated blockchain functionality with React front-end applications using Web3.js
SolidityReactWeb3.jsSmart Contracts

System Engineer

Full-time · Oct 2019 – Feb 2020

  • –Managed system engineering operations and maintained critical IT infrastructure
System EngineeringIT Infrastructure

System Administrator

Full-time · Jun 2016 – Sep 2019

  • –Administered enterprise systems and provided comprehensive IT support services
System AdministrationIT SupportNetwork Management

Skills & Expertise

Blockchain & Web3

SoliditySmart ContractsWeb3.jsEthers.jsSubstrateDAO DevelopmentDeFiToken Standards

Frontend Development

ReactNext.jsTypeScriptTailwind CSSFramer Motion

Backend & Infrastructure

Node.jsSystem AdministrationWordPressIT InfrastructureVPNNetwork Security

Leadership & Strategy

Team ManagementSecurity Best PracticesTechnical ArchitectureBlockchain ConsultingCode Review

Get in Touch

Interested in collaboration or consulting? Let's connect.

ziga@flisko.siLinkedIn→
Ljubljana, Slovenia