Sebastian Grunwald

Leading a team of four developers to architect and implement the core smart contracts for a sustainable idle gardening game. Responsible for the design, security auditing, and deployment of complex token standards (ERC-20, ERC-721) and the integration of Chainlink VRF for provably fair NFT breeding mechanics. Defining technical standards and managing the full development lifecycle from concept to Mainnet launch.

Developed and deployed novel DeFi protocols and NFT marketplace contracts. Specialized in optimizing gas usage and implementing rigorous security checks across all smart contracts. Contributed significantly to the migration of existing protocols to layer 2 solutions, enhancing scalability and reducing transaction costs for users.

Member of the core engineering team focused on building enterprise blockchain solutions for supply chain transparency. Primarily worked on private EVM-compatible networks, developing permissioned smart contracts and integration APIs. Gained experience in cryptographic proofs and cross-chain data verification.

Developed and maintained high-traffic RESTful APIs using Python/Django. Contributed to database design and performance optimization. Transitioned into initial exploration and development of blockchain proofs-of-concept for the company's future tech stack.

Assisted the R&D team with preliminary research on distributed ledger technologies (DLT) and their potential application in secure data storage. Managed internal tooling for automated testing and deployment.