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

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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.

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🔭 Primary programming languages

Rust Java Python

🎛️ Libraries and frameworks related to Rust

Blockchain & Crypto: | | |

Async & Web: |

Database: |

Testing & Monitoring: | |

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

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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

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

🧰 Other programming languages & Frameworks

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⛓️‍💥 Blockchain Networks

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🔐 Post-Quantum Cryptography & Zero-Knowledge Proofs

Post-Quantum Cryptography: | | |

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

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🦄 NFT Marketplaces

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✉️ Messaging

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💾 Data storage

DB: | | | | | | |
Files: | | | |

⚙️ Infra | CI/CD

Deployment: | | | | | | | | |

Git | CI/CD | Monitoring: | | | | | | | |

🌪️ Operating systems:

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Favorite IDE:

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.

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

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