John Dones

I'm a Senior Software Engineer with over 10 years of experience building scalable web applications, backend systems, and AI-powered products. My background spans Python, TypeScript, React, Node.js, APIs, cloud infrastructure, and distributed systems, with recent specialization in LLMs, RAG, LangChain, LangGraph, and AI agents. Most recently, I worked as a Senior AI Software Engineer on healthcare AI applications, developing retrieval pipelines, agentic workflows, backend integrations, and production evaluation and observability capabilities. Previously, I developed AI-powered learning features for an education platform, including semantic search and intelligent knowledge retrieval. Two achievements I'm proud of are optimizing marketplace APIs from 800–1,200 ms to 200–400 ms and improving image loading performance by approximately 40–50% through frontend and media optimization. I enjoy investigating complex technical problems, improving system reliability, and collaborating with engineering and product teams to deliver practical solutions. I'm comfortable working independently, taking ownership of projects, and communicating with distributed international teams. I'm looking for a long-term remote opportunity as a Senior AI Engineer, Backend Engineer, Full-Stack Engineer, or Technical Support Engineer where I can apply my engineering experience, solve meaningful problems, and contribute to a strong technical team. I'm flexible with international time zones and have experience working remotely with teams across different countries.