b0gdaniy

- Led smart contract development for an on-chain iGaming platform focused on provably fair betting and fully on-chain game mechanics — testnet deployments and pre-launch architecture. - Designed Solidity-based contracts for betting flows, game settlement, payout mechanics, treasury and fee handling, plus reusable modules intended to support a multi-game roadmap. - Integrated Pyth for fairness-critical game outcomes, enabling transparent on-chain verification of randomness, settlement, and payout logic — a core requirement for the provably-fair claim. - Owned contract architecture, testing methodology, security hardening, and deployment workflows through pre-launch — including coordination with product and frontend teams on contract interfaces.

- Selected for Nethermind's Cross-Chain & Emerging Ecosystems research program — a focused engagement on interoperability patterns, secure design, and emerging execution environments outside mainstream EVM. - Researched and prototyped smart contract solutions across cross-chain and emerging execution environments, focusing on interoperability primitives and performance-aware architecture patterns. - Worked on cross-chain contract logic and technical investigations for emerging blockchain infrastructure — insights from this engagement later informed CCIP-based work at Swarm. - Contributed to code reviews, technical documentation, and internal knowledge sharing around deployment flows, ecosystem integrations, and protocol behavior across non-standard EVM environments.

- Co-founded a smart-contract-based platform for real estate agreements and on-chain payments — launched at the Chainlink hackathon. - Designed product and contract architecture end-to-end and owned technical implementation through the hackathon launch and subsequent acceleration program. - Selected into the Vacuum Deep Tech Acceleration program as one of the winning startups, recognized in the Science Intensive Innovation track.

- Shipped Permission Manager as the foundational access-control layer for Swarm's RWA platform — first significant production contract I owned end-to-end, and the first mainnet deployment under my name on the protocol. Became the access-control backbone for tokenized equities, treasuries, and subsequent RWA product lines. - Designed and shipped three generations of the OTC settlement protocol — PermissionedDotc, OpenDotc V1, and OpenDotc V2 — iterating on swap mechanics, access patterns, and compliance gating across each version. OpenDotc V2 passed PeckShield audit and became the production OTC layer that ships today as dOTC v2. - Built and integrated Chainlink price feeds into Permission Manager to enforce per-user spending limits in real time — on-chain regulatory control that gates transactions based on USD value relative to each user's compliance tier. Became the foundation for price-dependent compliance flows across Swarm's RWA stack. - Established the team's contract testing and documentation patterns using Hardhat and Foundry — became the audit-readiness baseline for every later engagement (PeckShield, Pessimistic). - Owned remediation across early external audit cycles, converting audit feedback into permanent team checklist items and architectural guardrails carried forward into Lead-level work.

- Focused on smart contract security across DeFi, DAOs, marketplaces, and token systems. - Performed smart contract audits across tokens, staking and vesting systems, DAOs, marketplaces, upgradeable contracts, and DeFi protocols on EVM ecosystems — building deep familiarity with common attack surfaces and exploit patterns. - Identified vulnerabilities in access control, reward accounting, upgradeability flows, business logic, and oracle/integration patterns — with a focus on exploit prevention before production deployment. - Through HackenProof — triaged and validated incoming vulnerability reports, reproduced issues, assessed severity and impact for client-facing security workflows. - Applied secure development and gas-efficiency practices using Hardhat, Foundry, Slither, MythX, and OpenZeppelin patterns — toolchain that I now use on the writer side of the table at Swarm and Belong Net.