ZsomborHorvath.

Software Development Engineer InternDublin, Ireland

• Incoming SDE intern at AWS. Selected through a competitive technical loop focusing on scalable systems, data structures, and Leadership Principles.

AI Engineer InternAmsterdam, Netherlands

• Designed and implemented an end-to-end RAG pipeline — query rewriting, classification / routing, retrieval, streaming answer generation, and citation resolution.
• Built hybrid retrieval over a Weaviate vector DB: semantic + BM25 keyword search fused with Reciprocal Rank Fusion and reranked with a cross-encoder.
• Engineered grounded answer generation with Claude — structured output with inline citations resolved back to source document, page, and excerpt.
• Implemented hallucination prevention: verification model flags unsupported claims with confidence scoring.
• Added a semantic caching layer (Redis, cosine similarity) to cut latency and cost on repeat queries; enforced strict multi-tenant isolation across retrieval and caching.

Software EngineerRemote

• Spearheaded a team of 4 engineers to architect a high-availability video calling platform, scaling to 6,000+ Weekly Active Users.
• Engineered scalable RESTful services using Express.js & Azure, optimizing server-side logic to achieve a 15% reduction in API latency.
• Developed custom React Native native modules in Java/Swift for hardware integration, resulting in a 20% boost in frame rates.

Software Engineer InternBudapest, Hungary

• Architected RESTful APIs using PHP / Laravel and SQL, supporting 1,500+ MAU with high data integrity.
• Engineered production-ready UI components using React & Redux, focused on reusable component architecture.

Software Engineer · Part-timeBudapest, Hungary

• Developed and maintained applications written in React, TypeScript, Next.js, and NestJS.
• Expanded DevOps knowledge with Docker and CI/CD pipelines.
• Created tags in Google Tag Manager and analyzed data in Google Analytics.