Rareș – Rust, React, JavaScript

Building and launching SaaS products independently, handling the entire product lifecycle from ideation and architecture through deployment, billing, and user support. Applications are built with Nuxt/Vue.js frontends and Cloudflare Workers for serverless backends, with Stripe handling subscription billing.

• Designed and created full-stack SaaS applications as a solo developer from scratch
• Integrated Stripe subscription billing with tiered pricing plans, webhook handling, and payment flow management
• Built authentication systems and serverless API infrastructure on Cloudflare Workers
• Managed full product lifecycle: ideation, architecture, development, deployment, monitoring, and iteration

An NFT collection with a game and mobile app on the Sui blockchain.

• Designed and built an NFT indexer service based on the Sui indexer alt framework for handling NFT transfers and up-to-date owner information
• Provided support and code review for Move smart contracts as well as Typescript backend API

The project involved integrating the company's blockchain with the Network to enable cross-chain token transfers.

• Designed the cross-chain transfer architecture, including Rust smart contracts on the Cosmos chain, based on the company's specification
• Designed a TypeScript NestJS relayer service for sending and processing blockchain transactions
• Wrote Rust unit and integration tests for Amplifier service

Cross-chain interoperability solution enabling token and message transfers between blockchain networks via the company's protocol.

• Designed the cross-chain transfer architecture, including Rust smart contracts on 2 chains based on the specification
• Developed a TypeScript NestJS relayer service that sends and processes blockchain transactions
• Wrote Rust unit and integration tests
• Handled end-to-end delivery from contract design to API integration