Real-timebackends.LLMagents.Systemsthatworks.

Backend-leaning full-stack engineer on an AI-native Sales CRM and a UK automotive platform. Own service architecture across NestJS modular monoliths and microservices with real-time and LLM-agent capabilities.

• —Own backend service architecture across NestJS modular monoliths and microservices, applying Clean Architecture and the Adapter pattern to keep business domains isolated from third-party APIs.
• —Lead delivery of the CRM's AI voice-agent capabilities end to end — inbound/outbound agents, LLM tool calling, and a self-learning knowledge base — coordinating across telephony, transcription, and CRM data.
• —Integrate billing, security, and messaging infrastructure (Stripe, MFA, Redis, RabbitMQ) and partner with frontend on real-time React features surfacing agent activity and lead timelines.

Engineered full-stack solutions for the PureKeep password manager � secure vault sharing, roaming authenticators (passkeys), and standalone binaries for on-premises client deployments.

• —Orchestrated end-to-end cryptographic ceremonies (attestation & assertion) for a WebAuthn-compliant passkey provider using the native Web Crypto API.
• —Architected the compilation of a Node.js server into a self-contained executable, safeguarding proprietary source code for secure on-premises enterprise deployments.
• —Developed a secure E2EE sharing mechanism with cryptographic key wrapping for zero-knowledge transfer of vault items and large file attachments.

Led full-stack development across 4 projects: an Inventory & Employee Management System, an E-invoicing System, a Parcel Delivery Platform (BYKEA), and the backend of an AI-powered Community App.

• —Implemented real-time communication with Socket.IO, designing for reliability with acknowledgments, retry logic, and seamless reconnection for fault-tolerant interactions.
• —Applied Clean Architecture for maintainable, testable codebases and delivered structured REST APIs with clear Swagger documentation for easy integration.
• —Applied Strategy and other design patterns to implement dynamic business rules and extensible workflows, promoting DRY and improving flexibility, maintainability, and scalability.