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czareko/README.md

Hello 👋, I'm Cezary Olborski

CTO | Architect & Team Builder | Engineering Manager | Seasoned Backend (Rust, Java, Python) Engineer

Blockchain Enthusiast

Automation Advocate | DevOps/NoOps Evangelist

Working on Quantus Network - Quantum-Secure Layer 1 Blockchain


czareko

I split my time between Poland 🇵🇱 and Indonesia 🇮🇩

  • 🌱 Currently working on Quantum-secure Layer 1 blockchain at Quantus Network:
    • Governance & Treasury: On-chain governance mechanisms, with two communities, treasury, and chain upgrades management
    • Substrate Pallets: Using, customizing, and building from scratch
    • Networking & Consensus: P2P networking (libp2p) and quantum-resistant consensus (QPoW)
    • Mining Infrastructure: External miner integration, PoW algorithms, mining rewards distribution
    • CLI & Tooling: Rust command-line interface, key management, developer tools
    • Infra Automation: Built from scratch: Fedora secure setup, GitHub CI/CD & release pipelines, crate.io publishing, Prometheus monitoring, Grafana dashboards, Telegram alerts, Graylog logging
  • 💼 Previous focus areas:
    • Algorithmic crypto trading, market-making, and liquidity management
    • DEX (decentralized exchanges) and DeFi (decentralized finance)
    • Smart contracts on Solana and Ethereum ecosystems

I have 20 years of experience in IT projects, but the technologies and skills listed are limited to those I’ve "worked with" in the past six years.

"worked with" - I have at least tried it locally in a non-trivial business case, but in most cases I did way more.


🔭 Primary programming languages

Rust Rust Java Java Python Python

🎛️ Libraries and frameworks related to Rust

Blockchain & Crypto: Substrate | FRAME | libp2p | Web3

Async & Web: Tokio | Warp

Database: Diesel | SQLX

Testing & Monitoring: Criterion | Prometheus | Mockall

I'm using Rust for building Layer 1 blockchain infrastructure (Substrate/FRAME pallets, governance, consensus, P2P networking, CLI tools), trading bots, smart contracts on Solana, and DeFi applications.

🎛️ Libraries and frameworks related to Java

Spring | Lombok | Gradle | JobRunR | Reactor | Disruptor | Spock | JUnit | Mockito | Hibernate

In the past 5 years, I have used Java to build highly scalable, stateless solutions in microservices and hexagonal architecture, most often utilizing Kafka and deploying to AWS.

🎛️ Libraries and frameworks related to Python

Pandas | Numpy | Prisma | Streamlit | APScheduler | web3.py | Jupyter | Poetry | Hummingbot | FreqTrade

In the past 5 years, I have primarily used Python for crypto trading-related tasks.

🧰 Other programming languages & Frameworks

Solidity | JavaScript | TypeScript | Node.js | React | Express | GraphQL | JQuery | Go | Bash | PHP | Laravel | HTML | Groovy

⛓️‍💥 Blockchain Networks

Polkadot | Solana | Ethereum | Arbitrum | Hyperledger | EOS | VeChain | Cosmos | Perun | Aeternity | IOTA

🔐 Post-Quantum Cryptography & Zero-Knowledge Proofs

Post-Quantum Cryptography: Dilithium | CRYSTALS-Dilithium Plonky2 | Poseidon |

Working on quantum-secure blockchain infrastructure with NIST-approved post-quantum signatures and zero-knowledge proof systems (Plonky2, Poseidon) for scalability.

💱 Crypto Exchanges API integrations

Binance | Uniswap | Raydium | GateIO | KuCoin | Kraken | MEXC | Deribit | Gemini | Ithaca Protocol

🦄 NFT Marketplaces

OpenSea | MagicEden

✉️ Messaging

Kafka | RabbitMQ | ActiveMQ | Artemis

💾 Data storage

DB: Redis | PostgreSQL | MongoDB | RDS | AuroraDB | MsSQL | Oracle | ElasticSearch
Files: IPFS | Arweave | Filecoin | Crust | S3

⚙️ Infra | CI/CD

Deployment: AWS | GCP | Heroku | DigitalOcean | Docker | Kubernetes | Netlify | Vercel | Railway | Cloudflare

Git | CI/CD | Monitoring: GitHub | GitLab | CircleCI | Jenkins | Bitbucket | Prometheus | Grafana | Graylog | Kibana

🌪️ Operating systems:

CentOS | Ubuntu | Debian | Fedora | RedHat | macOS | Windows

Favorite IDE: IntelliJ IDEA

Architecture/Programming mindset:

Microservices, Hexagonal Architecture, Serverless CQRS, ES, WEB3.0, DDD, TDD, Code Review, SOLID, Clean Code, XP.

Blockchain & Infrastructure:

  • Layer 1 blockchain development with Substrate
  • Custom Substrate pallets development (governance, treasury, mining, reversible-transfers)
  • P2P networking architecture with libp2p
  • Consensus mechanisms (PoW/QPoW) and mining infrastructure
  • CLI development and developer tooling
  • Infrastructure automation (Docker, Prometheus, Grafana)
  • WebAssembly runtime development - all amazing substrate problems with no_std, compatibility, unstable fixes and so on.

Development on Steroids: Daily driver: IntelliJ & Cursor. I'm all about that sweet spot between letting AI do the heavy lifting and keeping the architecture clean. Not just vibe coding – it's about smart automation that actually makes sense and doesn't turn your codebase into spaghetti.


🏆🏆🏆 I hold over 50 professional certifications in the areas of programming, architecture, and project management.


Do you want to know more, find me on czareko

Pinned Loading

  1. solidity-forwarder solidity-forwarder Public

    JavaScript

  2. pallet-identity pallet-identity Public

    Rust

  3. pallet-event-storage pallet-event-storage Public

    Simple event storage with a limited lifetime

    Rust

  4. pallet-basic-token pallet-basic-token Public

    Rust

  5. aletheia-protocol/oracle-binance-rs aletheia-protocol/oracle-binance-rs Public

    Rust 1

  6. aletheia-protocol/ring-bench-rs aletheia-protocol/ring-bench-rs Public

    Rust 1