API work
Service contracts, validation, authentication, and endpoint behavior.
backend engineer · tokyo, japan
Fernando Ramirez, backend engineer.
Backend Engineer at Equmenopolis. Building and enhancing server-side applications, websites, and apps serving hundreds of thousands of users since 2010.
status: available
timezone: JST
focus: backend systems
01.work
Backend engineering, infrastructure, and data systems.
Infrastructure
Terraform, serverless systems, AWS, and Google Cloud.
Data systems
PostgreSQL, MongoDB, migrations, and query behavior.
02.experience
Work history.
Backend Engineer
Equmenopolis · Tokyo, Japan
Backend system design and implementation for AI conversational agents. Node.js, PostgreSQL, TypeScript, Drizzle ORM, Docker, Google Cloud.
Backend Engineer
Runewerk · Tokyo, Japan
Led a fintech project for Flashcenter: client-facing website, custom CMS, mail notifications, and legacy system integration. HTMX, Tailwind, Node.js, Docker, AWS.
Backend Engineer
Sweatworks · Arlington, Virginia
Design, update, and maintenance of wellness and health applications. Led a team of three on a six-month project. Serverless Framework, PostgreSQL, Node.js, TypeScript, AWS, Stripe API.
Full Stack Engineer
Coloridad LTD · Asunción, Paraguay
Point of sale system and loyalty program for Android POS devices. Camera filter app with Java and OpenGL. Census app for a municipality with Java, SQLite, AWS.
03.blog
Developer logs.
04.contact
Get in touch.
Profile, code, and professional contact.