Zohair D.

High-performance architecture: NestJS backend with multi-LLM integration (Claude, Gemini), premium multilingual voice synthesis (ElevenLabs, Cartesia SONIC 2.0), and real-time voice processing.

Universal booking system: Intelligent natural language booking engine with Google Calendar synchronization, complex slot management, and adaptation to sector-specific needs. Critical real-time optimization: Implementation of a Redis cache for automatic conversational context storage, reducing response times by up to 3.6 seconds to maintain phone call fluency.

Multi-company scalability: Modular architecture allowing customization by business sector while preserving customer context and interaction history. Technologies: NestJS, PostgreSQL, Prisma, Redis, LLM APIs (Claude/Gemini), ElevenLabs, Google Calendar API, phone voice processing.

Complete architecture migration: Transition from S3 storage system to relational database (Supabase) with performance optimization.

SCPI subscription workflow development: Design and complete implementation of the business process from A to Z, managing complex states and conditional transitions.

Intelligent PDF contract generator: Development of an automatic PDF subscription contract generation system, fully customizable by management company, with dynamic templates, modular clauses, and personalized branding by asset manager.

Asset Manager platform: Complete interface allowing SCPI managers to configure their contractual models, manage their subscribers, and monitor processes in real-time.

Advanced tracking system: Implementation of a status engine to characterize and monitor progress in subscription workflows with analytics dashboards. KYC & security integration: Implementation of identity verification process via Sumsub API with secure document storage on AWS S3 and GDPR compliance.

Smart Contract Development:

Setup of a suite of smart contracts on the POLYGON blockchain, including an ERC-20 token, a staking contract, a lending contract, and a transaction contract. This involved creating secure and efficient contracts to facilitate various blockchain-based transactions and services.

Server-side logic with NestJS and GraphQL: Development of robust server-side logic using NestJS, integrating a GraphQL API for database management. This included managing application roles and interactions with smart contracts, using the Viem Typescript library for seamless blockchain integration.

User Interface Design in React Native and Next.js: Design of intuitive user interfaces using React Native for end-users and a Next.js-based interface for administrative functions and application management. This involved creating responsive and user-friendly designs, ensuring a smooth user experience across different devices and platforms.