yossri Melki

Full Stack Engineer (Part-Time) Developing Tunagri, an AgriTech SaaS platform that connects suppliers, wholesalers, retailers, agricultural experts, and training centers within a unified digital ecosystem. Responsible for designing and implementing marketplace features, business workflows, training and event management modules, API development, and cloud deployment. Contributed to the successful delivery of the MVP, enabling client validation and early market adoption. Technologies: Next.js, Node.js, Mongodb, REST APIs, Vercel, SaaS Architecture, Full-Stack Development.

Full Stack Engineer Contributed to the development of a SaaS platform focused on inventory management, invoicing, and business process automation. Led the design and implementation of document automation solutions capable of monitoring local repositories, processing Excel and PDF documents, extracting structured business data, and synchronizing information with centralized systems. Developed scalable backend services and APIs using Node.js, built modern user interfaces with Next.js, and implemented data extraction pipelines in Python to streamline operational workflows and improve data accuracy. Core Achievements: • Automated document ingestion and processing workflows. • Reduced manual data entry through intelligent extraction and synchronization mechanisms. • Designed centralized data management solutions for operational and financial records. • Participated in the architecture and development of a scalable SaaS ecosystem. Technologies: Next.js, Node.js, Python, PostgreSQL, REST APIs, Document Processing, Excel Automation, PDF Extraction, SaaS Architecture.

Developing AI-powered recruitment SaaS reducing time-to-hire by 60% through automated job generation and NLP-based candidate matching with 92% accuracy • Built matching engine processing 500+ profiles/second with MongoDB/Redis optimization achieving sub-100ms queries • Architected Next.js platform handling 10K+ daily requests with 99.8% uptime and 5,000+ concurrent users • Technologies: Next.js, Node.js, Express.js, MongoDB, Redis, OpenAI API, NLP

Blockchain Developer Intern Contributed to the development of a LegalTech platform leveraging blockchain technologies for secure document management and verification. Designed and integrated smart contracts, implemented decentralized storage solutions using IPFS, and developed Web3 integrations to improve document traceability, security, and accessibility. Participated in building a hybrid blockchain architecture that optimized retrieval performance and reduced operational costs. Technologies: Ethereum, Solidity, Web3.js, IPFS, Smart Contracts, Node.js.

Improved backend performance with Redis caching and MongoDB indexing, cutting response times on hot endpoints. Set up PM2 cluster mode for load balancing to raise throughput and keep the service stable under traffic spikes.

Participated in the development of a decentralized storage platform aimed at providing secure, resilient, and distributed data management through blockchain technologies. Contributed to the design of a solution where files are segmented into encrypted blocks, distributed across a decentralized network, and managed through smart contracts to ensure data integrity, traceability, and secure recovery. Key contributions: • Designed and implemented smart contract logic for decentralized storage management. • Developed blockchain-based mechanisms for data ownership verification and access control. • Participated in the implementation of file fragmentation, encryption, and recovery workflows. • Collaborated on the architecture of a distributed storage ecosystem combining blockchain and cryptographic techniques. • Assisted in integrating Web3 technologies with backend services and decentralized applications (dApps). • Contributed to performance optimization, testing, and security validation of blockchain components. Technologies: Solidity, Ethereum, Smart Contracts, Web3.js, Cryptography, Decentralized Storage, Node.js, Blockchain Development.