**Daniel Salo**
Blockchain & Web3 Engineer
dsalo0915@gmail.com
+358 044 1576
Helsinki, Finland
github.com/princecharming0115

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### **PROFILE**
Passionate software developer with 7+ years of experience specializing in blockchain technology. Spearheaded the development of blockchain projects in **Fintech**, **Gaming**, **DeFi/DEX**, and **NFT marketplaces** using **Solidity**, **Golang**, **Node.js**, and **React.js**. Extensive knowledge of **Cosmos SDK**, successfully developing a new **Layer 1 chain**. Ready to apply expertise in crypto startup projects.

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### **PROFESSIONAL EXPERIENCE**

**Blocksism**
*Lead Blockchain & Web3 Developer*
*01/2022 – 12/2023*
- Designed **tokenomics models** for a new ecosystem using **Baseline Protocol** as a **DeFi researcher**.
- Developed a **DeFi/DEX platform** with **cross-chain functionalities** using **CCIP (Cross-Chain Interoperability Protocol)** based on **Aave**.
- Built a **gas-efficient Multi-Chain NFT marketplace & staking platform** using **ERC-20, ERC-721(A), ONFT721**, and **LayerZero Protocol** on **EVM L1/L2** and **Solana**.
- Developed a **DID & SSI Wallet** with **Zero-Knowledge Proofs** compliant with **OpenID standards (OID4VCI, OID4VP)** for **tokenizing traditional will notarization** for DIFC Court.
- Worked with **Ethereum L2 Rollups (Arbitrum, Optimism, Polygon, zkSync)** for deployment, debugging, and scalability enhancements.
- Implemented **Account Abstraction Wallet** using **ERC-4337** and **Biconomy SDK**.
- Managed a **distributed Scrum team of 3**, increasing user engagement by **10%**.

**SigmaSolve**
*Web3 Developer*
*09/2019 – 01/2022*
- Developed **10+ scalable websites** for **Fintech SaaS platforms**.
- Built a **crypto payment gateway** using **React.js, Node.js, and Microservices**.
- Used **Django (Python)** for backend development of an **e-commerce platform**.
- Implemented **MySQL & MongoDB** for database systems.
- Wrote **Unit, Integration, and E2E tests** (Cypress, Jasmine, Jest) ensuring **99% code coverage**.
- Deployed using **Docker, Kubernetes, AWS Lambda, API Gateway, and CloudFormation**.

**Fractal**
*Smart Contract Developer*
*04/2017 – 08/2019*
- Developed an **Ethereum-based Game NFT marketplace** using **Solidity, Web3.js, Ethers.js, Hardhat**.
- Utilized **IPFS** for secure, immutable data storage.
- Implemented **ERC-20, ERC-721, ERC-1155** token standards with **gas optimization**.
- Fixed **security vulnerabilities** in NFT smart contracts.

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### **EDUCATION**
**Bachelor’s in Computer Science**
University of Helsinki
*2012 – 2017*

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### **SKILLS**
**Languages:** Golang, Solidity, Rust, Python, JavaScript, TypeScript, C++
**Blockchain:** Cosmos SDK, Truffle, Hardhat, Foundry, OpenZeppelin, Ethers.js, Web3.js
**Standards:** ERC-20, ERC-721, ERC-721A, ERC-1155, ERC-4337, EIPs, LayerZero, zkProofs (zkSNARK)
**Web:** React.js, Next.js, Node.js, Express.js, Nest.js
**Databases:** MySQL, PostgreSQL, MongoDB, GraphQL
**Cloud:** AWS, GCP, Azure, AWS Lambda

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