Senior Blockchain/Crypto Developer

Engineered a scalable Ethereum DeFi ecosystem, supporting $50M+ in locked assets and reducing transaction costs by 22%.
Directed the development of a cross-chain bridge (Ethereum ⇄ Solana), processing over 1.2M transactions with custom Solidity and Rust modules.
Designed tokenomics systems and monetization logic to support decentralized reward models across
multiple DApps.
Built and scaled backend systems using Python for transaction orchestration and smart contract interactions; implemented asynchronous job queues and microservices with FastAPI and Celery.
Integrated Java-based services for secure off-chain/on-chain communication and signature validation
pipelines, ensuring reliable data processing at scale.
Used REST, GraphQL, and gRPC to expose services for wallet authentication, token management, and
collectible avatar transactions.
Mentored six engineers, established backend and blockchain best practices, and reduced contract-level
vulnerabilities by 95% via formal verification and security audits.

Built a high-traffic NFT platform on Solana using the Anchor framework and Rust smart contracts, driving
over $2M in secondary volume and attracting 10K+ creators.
Developed backend microservices in Python for NFT metadata indexing, royalty tracking, and on-chain event
consumption using The Graph and custom webhooks.
Collaborated with backend teams using Java to integrate third-party APIs, payment systems, and real-time
event pipelines for Solana wallet interactions.
Implemented staking and token-gating systems, increasing average session time by 42% and improving user
retention.
Optimized RPC interactions and transaction batching to reduce NFT mint and confirm times from 8s to 3.5s,
enhancing user experience under load.

Delivered Ethereum-based supply chain traceability tools for three Fortune 500 companies, lowering
compliance-related errors by 30%.
Developed 20+ smart contracts for asset issuance, voting systems, and KYC integration—all with 100% test
coverage.
Automated end-to-end contract deployments using Hardhat scripts and environment-specific configuration
management, decreasing manual deployment errors by 80%.
Integrated gRPC for efficient communication between blockchain components, enhancing the system's
scalability and reducing latency in high-traffic applications.
Conducted over 50 manual and automated audits, reducing contract gas usage by 18% through optimization.
Deployed and maintained smart contract-based decentralized solutions, utilizing tokenomics for asset
management, improving operational efficiency by 18%.

Built 12 interactive platforms with React, Node.js, and MongoDB, serving over 100K monthly users.
Developed and maintained secure REST APIs with JWT-based authentication for eight business-critical
apps.
Integrated Stripe and PayPal, increasing conversion rates by 18% in Q3 2017.
Rebuilt front-end architecture using React and Webpack, reducing load times by 45% and improving
Lighthouse scores.
Deployed Jenkins CI pipelines, lowering build failure rates from 14% to under 3%.
Partnered with product and UX teams to release six high-impact features, achieving a 96% customer
satisfaction rate.