jsfrocha

Worked as a part of the R&D team on multiple projects (mainly PoC’s and MVP’s) built on top of the zkSync Layer-2 protocol. Created the txTsuko backend using NestJS on top of Node. Supports session-based authentication integrated with SIWE (Sign-in with Ethereum). Created a new subgraph on the TheGraph platform to track Accounts created by the Account Abstraction standard and deployed Paymasters. Created the deployment workflow to AWS by using AWS CDK (Infrastructure-as-Code) to build a Fargate deployment infrastructure. Added CI/CD by leveraging Github Actions to build and deploy based on several triggers such as pushing to dedicated branches.

Worked with a smart-contract focused team, where I was tasked to handle all web integrations and interactions with smart contracts - both on the Backend and on the Frontend. Maintained the current Lido on Polygon app (React / NextJS based), added new features and pages such as a Rewards page and a DeFi page, making it more similar to Lido on Ethereum. Created a new Backend (using NestJS, based on the Lido Template) to replace all client-side requests with a robust cache-controlled and rate-limited API. Created a new SDK to enable easier interaction with stMATIC contracts and Backend requests. Created a new Subgraph (on the TheGraph platform) to track and index stMATIC-related smart contracts. Built the frontend for a staking solution on Starknet L2, leveraging the Liquity protocol.

Led and worked alongside a multidisciplinary team of developers and data scientists in aggregating and analysing on-chain (Polygon blockchain) and off-chain data; simulating GameFi economy outcomes and applying new game design solutions to existing codebases; building ecosystem supporting web apps interacting with Smart Contracts.

Joined a project that was aimed at simplifying the concepts required to play Axie Infinity, a play-to-earn crypto-based game. Was responsible for both developing simulators and data analysis tools as well as coordinating all the different products such as Ronin read-only node for data gathering through the blockchain; data ingestion scripts into MongoDB for later analysis; data analysis tools and charts; custom-built Marketplace for ease of use on buying assets; asset listing alerts.

Developed a full-stack system with React in the front-end and Node.js (with Express) on the back-end, according to specifications. Developed the front-end for the Netflix 3% Challenge game. Developed the entire Doppio ID infrastructure to support tracking of gamers progress. Developed a web platform (front-end, back-end and CMS) for Onshore Guide aimed at helping sailors cruising along the coast of Portugal.