chrakimnas6

• Lead a 6‑engineer backend team for the TOKI DeFi platform, guiding technical architecture, managing the project roadmap, and fostering agile development through scrum, design reviews, and 1‑on‑1 mentorship. • Architected a new indexer‑based event streaming system and partnering with an engineer to rapidly implement the design using extensive pair programming, replacing legacy batch processing for core blockchain data. This scalable solution ensures real‑time data availability and is designed for easy extension to any EVM‑based chain. • Engineered a real‑time data (transaction status, token price) push system using Azure Web PubSub to replace an inefficient polling model, eliminating over 90% of redundant requests and drastically reducing load on backend services and blockchain nodes. • Architected a hybrid on‑chain/off‑chain rewards system leveraging Merkle trees and Azure Key Vault HSMs. This design stores the full Merkle tree off‑chain while periodically committing only the root on‑chain, enabling users to request a secure proof from the backend and submit it for low‑gas, verifiable on‑chain claims. • Spearheading the integration of the Uniswap Routing API to dramatically expand token availability, enabling users to swap hundreds of assets cross‑chain and significantly enhancing platform liquidity. • Actively contribute to team growth by conducting technical interviews and screening candidates to identify and secure top engineering talent.

• Led a 4‑member team developing the Ginco Web3 Cloud, where I managed the product roadmap, ensured high code quality through rigorous reviews, and served as the primary technical point of contact for clients. • Engineered robust integrations for diverse blockchain architectures (EVM, Substrate, Cosmos, Algorand, Solana, Aptos), expanding the plat‑ form’s core multi‑chain capabilities and enabling broader asset support for customers. • Developed core wallet and indexer APIs in Go and gRPC, delivering critical services for key management, on‑chain data indexing, and real‑time transaction notifications. Deployed and managed infrastructure on Google Cloud Run using Terraform. • Optimized and refactored core microservices to enhance performance and reduce architectural complexity, significantly improving system maintainability and scalability. • Partnered directly with business customers to resolve complex technical inquiries, translating their needs into scoped feature requirements and ensuring timely, successful implementation. • Contributed to the company’s globalization by participating the hiring process for international talent. Screened candidates, conducted tech‑ nical interviews, and mentored new engineers to ensure their successful integration. • Researched and developed a proof‑of‑concept for integrating MPC‑based threshold signatures into the wallet product, providing critical analysis and a functional demo for the future security roadmap.

• Ensured high availability of critical infrastructure by monitoring server health with Grafana, performing root cause analysis, and resolving hard‑ ware/software issues. Automated routine maintenance tasks using Python and Bash, significantly reducing manual intervention. • Designed and implemented REST APIs with FastAPI, strictly adhering to TMF633 specifications to standardize data exchange between internal services and external network partners, ensuring system‑wide interoperability.