Senior Full Stack Developer
Porat.dev · Remote- Architected and delivered AI-powered product features using OpenAI and Anthropic Claude APIs, implementing streaming responses, function calling, and multi-modal capabilities within Next.js and TypeScript applications.
- Designed and built production-grade RAG (Retrieval-Augmented Generation) pipelines using LangChain and vector databases (Pinecone, Weaviate), enabling semantic search and context-aware knowledge retrieval across large document corpora.
- Developed intelligent conversational AI systems with Dify framework for workflow orchestration, multi-turn dialogue management, and integration of multiple LLM providers.
- Led AI red teaming initiatives — systematically probing LLM-based systems for prompt injection vulnerabilities, jailbreak vectors, and data leakage risks, producing detailed security assessment reports and mitigation strategies.
- Built real-time monitoring and observability dashboards using Grafana, integrating custom data sources to visualize application health, LLM response latencies, token usage, and business KPIs across distributed systems.
- Engineered high-performance React.js and Next.js 14 frontends leveraging server components, app router, and SSG/SSR strategies, serving 100K+ monthly active users with optimized Core Web Vitals.
- Developed and maintained scalable Node.js / Express.js RESTful APIs with PostgreSQL and Prisma ORM, implementing JWT authentication, role-based access control, and WebSocket-based real-time data delivery.
- Reduced application load times by 60% through code splitting, lazy loading, Redis caching, and strategic CDN usage; improved Lighthouse performance scores from 55 → 92 across flagship products.
- Mentored junior engineers on TypeScript best practices, LLM integration patterns, prompt engineering, and modern React architecture including custom hooks and state management with Redux Toolkit.