Technical Skills

- Blockchain Protocols & Frameworks: Ethereum, Polkadot, Cosmos SDK, Hyperledger Fabric

- Smart Contract Development: Solidity, Rust, Vyper, Chaincode

- Layer 2 Scaling Solutions: Rollups (zk-rollups, optimistic rollups), State Channels

- Distributed Ledger Technologies (DLT): Consensus algorithms (PoS, DPoS, BFT)

- Cryptography & Zero-Knowledge Proofs

- RESTful & GraphQL APIs

- Backend Languages: Go, Rust, Node.js, Python

- Database Technologies: Postgres, Redis, OrbitDB

- DevOps & Cloud: Docker, Kubernetes, AWS, GCP

- Version Control & CI/CD: Git, Jenkins, CircleCI

- Testing & Security: Smart contract auditing, Formal verification

Soft Skills

- Analytical problem solving

- Cross-team collaboration

- Agile development methodologies

- Technical documentation & code reviews

- Continuous learning & adapting to evolving tech

*Senior Blockchain Backend Engineer*

*CryptoSolutions Inc., San Francisco, CA*

June 2022 – Present

- Led backend development for a decentralized identity management platform, integrating zero-knowledge proofs to enhance privacy.

- Architected and deployed a Layer 2 scaling solution using zk-rollups, increasing transaction throughput by 300%.

- Developed REST and GraphQL APIs to facilitate seamless integration with frontend apps and external partners.

- Collaborated with security auditors to ensure smart contract robustness, reducing vulnerabilities by 40%.

- Mentored junior developers, fostering an innovative culture around blockchain solutions.

*Blockchain Backend Engineer*

*BlockInnovate Technologies, New York, NY*

August 2019 – May 2022

- Built and maintained smart contract infrastructure in Solidity and Rust for a multi-chain fundraising platform.

- Enabled interoperability between Ethereum and Polkadot parachains, facilitating cross-chain asset transfers.

- Optimized consensus algorithms in Hyperledger Fabric to support enterprise-grade deployment.

- Designed a scalable distributed database system with OrbitDB for off-chain data storage.

- Implemented automated testing pipelines with CI/CD, reducing deployment time by 25%.

*Junior Blockchain Developer*

*FinChain Labs, Remote*

June 2017 – July 2019

- Assisted in developing permissioned blockchain solutions for supply chain tracking using Hyperledger Fabric.

- Developed smart contracts in Solidity and tested features using Truffle and Ganache.

- Contributed to blockchain protocol research, focusing on energy-efficient consensus mechanisms.

- Created internal documentation to streamline onboarding of new developers.

**Bachelor of Science in Computer Science**

University of California, Berkeley – Berkeley, CA

*2013 – 2017*

- Certified Blockchain Developer™ – Blockchain Council (2021)

- CEH (Certified Ethical Hacker) – EC-Council (2022)

- AWS Certified Solutions Architect – Associate (2023)

Decentralized Identity & Privacy Layer

Developed a privacy-preserving decentralized identity platform utilizing zk-SNARKs and DID standards, enhancing user privacy in credential verification.

Cross-chain Asset Bridge

Engineered a secure cross-chain asset transfer protocol connecting Ethereum, Polkadot, and Binance Smart Chain, enabling real-time liquidity movement with 99.99% uptime.

Smart Contract Security Framework

Established a comprehensive smart contract testing environment integrating formal verification tools, improving contract security and audit efficiency.

- Ethereum, Polkadot, Cosmos SDK, Hyperledger Fabric

- Solidity, Rust, Chaincode, Vyper

- zk-SNARKs, zk-Rollups, Optimistic Rollups

- Docker, Kubernetes, AWS, GCP

- Git, Jenkins, CircleCI

- Truffle, Hardhat, Remix, Foundry

- English (Fluent)

- Spanish (Professional Working Proficiency)

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*This resume combines realistic experience, current and emerging blockchain technologies, and specific contributions aligned with 2025 industry trends, presenting an authentic and ATS-friendly profile.*