littbarskiadesh

Architected and deployed a decentralized multiplayer game on the Sui blockchain, leveraging its unique object-centric data model to securely store immutable game state checkpoints and zero-knowledge cryptographic proofs at Layer 1, ensuring high data integrity and resistance to tampering. Engineered and optimized a zk-Rollup Layer 2 scaling solution utilizing advanced zero-knowledge SNARKs to batch and validate thousands of off-chain transactions per second, slashing gas fees by 85% and reducing transaction latency to under 2 seconds—critical for smooth, real-time gameplay. Designed and implemented modular cryptographic proof verification protocols to guarantee all off-chain game events are securely anchored and auditable on-chain, preventing fraud and maintaining absolute asset ownership trustworthiness. Integrated Chainlink VRF (Verifiable Random Function) Oracle to deliver provably fair, on-chain randomness for game mechanics such as loot drops and event triggers, significantly increasing player trust and engagement metrics. Led end-to-end smart contract security audits using tools like MythX, Slither, and manual penetration testing, identifying and resolving complex vulnerabilities including reentrancy attacks and logic flaws, resulting in zero critical incidents post-launch. Collaborated cross-functionally with frontend developers, UI/UX designers, and backend engineers to architect seamless interaction flows between blockchain layers and game clients, improving overall user experience and retention by 20%.

Designed, developed, and deployed high-quality Solidity smart contracts powering a decentralized trading platform with features such as order book matching, escrow services, and on-chain settlement, which improved transaction finality times by 25% and enhanced platform reliability. Built and maintained a decentralized social networking module incorporating encrypted on-chain user profile storage, leveraging Decentralized Identity (DID) standards and IPFS for immutable, privacy-preserving data management compliant with emerging blockchain privacy regulations. Integrated and customized zk-Rollup Layer 2 solutions (zkSync) to batch-process trading and social interactions, achieving a 60%+ reduction in gas costs and enabling scalable transaction throughput for thousands of concurrent users. Developed a cutting-edge market prediction engine by combining secure Chainlink oracle feeds with proprietary AI-powered analytics models, delivering accurate real-time trading signals that increased active user engagement and trading volumes by 15%. Conducted thorough smart contract security assessments and code reviews using MythX, Slither, and manual audits, ensuring contracts were robust, gas-optimized, and compliant with best practices, leading to successful deployment without critical issues. Partnered closely with frontend and backend teams to architect secure RESTful APIs and middleware that integrated off-chain data and services with blockchain smart contracts, facilitating smooth user experiences and reliable data flow.

Led optimization of cloud infrastructure to reduce operational costs by 20% while enhancing system reliability and uptime through efficient resource allocation and monitoring. Designed and developed scalable RESTful APIs using Python and Django REST Framework for customer-facing applications, ensuring robust performance, comprehensive documentation, and ease of maintenance. Implemented secure, multi-factor authentication flows with Firebase integration, significantly strengthening user data protection and access control. Architected and maintained PostgreSQL databases optimized for high availability and fast query performance, enabling efficient data storage and retrieval across multiple services. Refactored existing codebase and optimized data processing algorithms, resulting in a 90% improvement in reporting speed and accuracy, directly contributing to better business intelligence.

Designed and deployed scalable, cost-efficient AWS infrastructure tailored to support backend microservices, improving application availability and reducing latency. Developed middleware using Node.js to enable seamless communication between backend services and Ethereum smart contracts, facilitating reliable blockchain interactions. Architected MongoDB database schemas focused on flexibility and scalability to meet evolving application data requirements and ensure optimal performance. Automated comprehensive backend endpoint testing pipelines, significantly reducing bug incidence and increasing overall system stability. Collaborated closely with frontend developers and smart contract engineers to ensure smooth integration of Web3 components, enhancing user experience in decentralized applications. Managed CI/CD pipelines using GitHub Actions, streamlining build, test, and deployment processes, accelerating delivery cycles and reducing manual errors.

Enhanced fraud detection efficiency by 30% using machine learning, developed automation tools with Python and PowerShell, provided expert technical support, and managed AWS infrastructure for high availability and scalability.