ericmastro

- Negotiated delivery timeframes, roadmap, and requirements with executive leadership for a team of five reporting engineers. - Shipped the first Logos Storage integration into Status Desktop on time and under budget, coordinating across engineering teams. - Cleared the path for engineers while reviewing code, mentoring direct reports, and contributing to the engineering work. - Delivered C and Go bindings for the Logos Storage client, enabling SDK-like use as a data layer in external projects. - Deployed an ephemeral Kubernetes cluster on Google Cloud Platform for distributed release testing, cutting average release cycle costs by 50% through Terraform IaC. - Set up Prometheus and Grafana observability for bootstrap nodes, enabling fast incident response and sustained production uptime. - Automated generation and deployment of C, C++, and OpenAPI reference documentation using GitHub CI/CD workflows.

- Led a remote team of six international engineers through the full SDLC, reviewing all code across 41 repositories that entered the marketplace. - Owned roadmap, requirements, architecture, and delivery for the on-chain storage marketplace, shipping three test networks with over 100 active participants. - Led adversarial mechanism and protocol design of the storage marketplace EVM contracts, working across legal compliance requirements. - Co-authored a unique token custody design that limits what a compromised contract can do with escrowed funds, leading to the publication of the ERC-8233 token standard (Draft). - Championed design write-ups before writing code, improving transparency for the executive board and end users, and raising sprint estimation accuracy by over 30%. - Architected slot reservations to prevent a protocol-driven DDoS on the node that issued a storage request, using an expanding window mechanism governed by Kademlia distance. See *egonat.me/slot-reservations*. - Redesigned the entire state machine architecture after analysing recoverability during exceptions, cancellations, and hardware failures. See*egonat.me/recoverability-analysis*. - Drove the client and smart contract audit, including formal verification with Certora, and designed contract observability and emergency preparedness procedures in case of an exploit.

- Presented Logos Storage at four international conferences and guest panels, providing technical workshops for developers as well as increasing product visibility and community reach. - Implemented zero-knowledge proof verification in marketplace contracts, guaranteeing storage providers held datasets with nine nines of certainty. - Modified DiscV5 to use SignedPeerRecords in the DHT, removing one class of DHT poisoning attacks. - Architected an asynchronous state machine to react to Ethereum contract events, reducing node CPU load by 15%. - Engineered a slot queuing mechanism for storage providers to handle concurrent storage requests, increasing slot coverage to 100%. - Created a parallel test harness that reduced integration test time by 50% on GitHub CI runners. - Developed a contracts test harness using Hardhat (JavaScript), achieving 100% end-to-end and integration test coverage. - Implemented the client REST API for creating and modifying storage requests, enabling remote interaction with the storage network. - Wrote design documents that reduced engineer onboarding delay by more than two weeks.

- Introduced a thread pool task manager that moved blocking tasks off the main UI thread, preventing the UI from freezing. This work later became the basis for the task runner library. - Created the sticker pack market feature in the wallet, allowing users to purchase sticker packs on-chain and creating the app's only revenue source. - Established the 'Send Transaction' flow by creating reusable components, reducing future flow development time by up to 80%. - Replaced exception-based error handling with Result types, forcing immediate error checking using standard control flow and reducing escaped exceptions in the Qt layer. - Built the entire wallet account management functionality, the most visible component in the product.

- Spearheaded the Embark plugin ecosystem, opening the tooling to the entire FOSS community. - Led interactive workshops at six international events showcasing Embark's feature set, including EDCON in Sydney, Devcon IV, and DappCon Berlin. - Prototyped next-generation features, building an in-browser Fiddle that compiles and deploys Solidity contracts and shows a process log viewer. - Sandboxed the REPL-like interactive console inside a VM2 instance, ensuring untrusted code ran isolated from the host. - Engineered an RPC proxy to support EIP-712 transactions and decode raw transactions signed by mnemonic-derived accounts. - Shipped IPFS and Swarm plugins to enable dApp deployment to decentralised storage networks. - Engaged with end users to implement new features and fix bugs, contributing 738 commits, 260 pull requests, and 382 pull request reviews.