Fullstack Developer Blockchain

Gabriel Ramirez

Blockchain Fullstack Developer

*.*******.*****@*****.*** Hamina, Kymenlaakso, Finland S U M M A R Y

Sr. Blockchain Engineer and Web3 Fullstack Developer with over 7 years of hands-on experience in FinTech / ECommerce / DeFi / AI / Game spaces, utilizing serveral programming languages and frameworks such as Solidity, Solana, JS/TS, Golang, Rust, React, Web3.js/Ethers.js, Hardhat. With deep understanding in Zero-Knowledge Proofs, Cryptography, Tokenomics, Security, Cosmos SDK, Polygon CDK and various Consensus Protocols.

Ready to apply my passion for talented blockchain companies. WORK EXPERIENCE

Lead Blockchain Engineer

Calimero Network

04 / 2022 - Present

London, UK

• Led a blockchain team of 5 members and the development of multiple blockchain projects with over 5000 users.

• Integrated Uniswap, Aave, MakerDAO, EigenLayer, etc for bearing yields from the staking contracts.

• Developed a token bridge project for securely on/off ramping native tokens between Layer 1 and Layer 2 chains.

• Participated in the design and development of a Layer-1 AI Blockchain Network using Cosmos SDK(Golang), CometBFT and IBC(Inter-Blockchain Communication) Protocol.

• Developed Solidity Smart Contracts for Cross-Chain Liquidity Staking Platform using LayerZero and IBC protocol on EVM and Cosmos chains using Solidity and CosmWasm.

• Developed a Real World Asset Tokenization project with Physical Backed Token smart contracts and ARX chip integration.

• Implemented social login feature and MPC by integrating Account Abstraction with ERC4337 standard, Biconomy SDK and Web3Auth.

• Wrote thorough unit and fuzzing testing cases using Chai, Hardhat and Echidna.

• Used React.js, Ethers.js, Web3.js, Node.js, Django/Flask and Rust for building micro web3 frontend/backends.

• Implemented CI/CD pipelines using Github Actions and Docker.

• Worked with several AWS services like API Gateway, EC2, EKS, Amplify, Lambda, S3, Route 53, Dynamodb and other third party tools like Kubernetes and Terraform for building a stable and scalable backend services.

• Used Apache Kafka and Redis for building a resilient microservice-based backend.

• Performed smart contract audits with Slither and MythX Web3 Full Stack Developer

Block Ventures

07 / 2019 – 03 / 2022

Los Angeles, CA

• Participated in the design and development of a Blockchain Healthcare Management Platform using Zero Knowledge Proofs, implementing the OpenID standard.

• Developed a permissioned private EVM network using Geth Node and managed the integration to the healthcare platform.

• Participated in the Wallet and Node development.

• Used AWS Nitro Enclave, AWS KMS and secure cryptographic algorithms for generating large zk-proofs on a secure isolated computing environment, guaranteeing a high security.

• Used React and Vue.js for building Micro-frontend architecture.

• Utilized GCP's Kubernetes Engine, Cloud Function, Storage Bucket and Pub-Sub system to build an efficient cloud-native microservice-based backend architecture.

• Developed a scalable microservice backend using Node.js and AWS SNS/SQS.

• Used Memcached for implementing backend cache mechanism for read-heavy services.

• Automated testing suite using Jest and Cypress, resulting in improved code quality and faster releases. Web3 Full Stack Developer

Tehoapps

08 / 2016 – 06 / 2019

Espoo, Southern, Finland

• Participated in development of an Ethereum-based Game NFT marketplace project using a range of technologies including Solidity, Web3.js, Ethers.js and Hardhat.

• Participated in building a Liquidity-mining DeFi platform

• Designed and developed user-friendly and responsive web3 frontend applications React and MUI.

• Developed a scalable microservice backend using Node.js and AWS SNS/SQS.

• Developed several Web applications for different industry customers like Game, Insurance, Finance with MERN stack(MongoDB, Express.js, React.js, Node.js) and Web3.

• Used Docker and Kubernetes for Containerization. SKILLS

Language: Go, Solidity, Rust, Python, C++, JavaScript, Typescript, Java Web3/Blockchain: Bitcoin, EVM, Geth, Solana, Cosmos SDK, TON, Hardhat, FunC, Foundry, Truffle, Remix IDE, Echdina, Cross-Chain protocols, Oracles, RWA, DEFI, NFT, ERC4337 Cloud Service: AWS, GCP, CI/CD, Docker, Kubernetes, Jenkins, Terraform, EC2, ECS, EKS, GKE, S3, RDS, Amplify

DB: MySQL, PostgreSQL, MongoDB, Redis

Web Development: React.js, Next.js, Nest.js, Node.js, Django/Flask EDUCATION

Bachelor of Degree in Computer Science

Lappeenranta University of Technology 09 / 2013 06 / 2016

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