SI
Sixlabs
Company Employees
Pablo Castro
Senior Backend Engineer & Blockchain @Cognita Engineering
Verified
Senior Backend Engineer & Systems Architect with 18+ years building production software and 16+ years leading engineering teams for US and international companies, from startups to enterprise. For the past decade I’ve worked fully remote with US teams, including NYC-based companies such as ExecThread and Silverstein Properties, operating in US / Eastern Time. My expertise is in backend engineering and distributed systems, designing high-availability platforms, cloud-native architectures, serverless systems, and large-scale data infrastructure. In recent years I’ve focused on blockchain infrastructure and smart contracts, with deep hands-on experience in Cadence (Flow) and Solidity. I’m also the Founder & CEO of Cognita SPA, where I build AI-driven automation and data platforms, including large-scale scraping infrastructure, LLM agent systems, and SaaS products like apoint.cl. Core Stack: TypeScript, Node.js, Python, AWS, GCP, Distributed Systems, Serverless, Blockchain, Smart Contracts, Docker, React, React Native, Next.js.More...