Frontend
ReactNext.jsTypeScriptJavaScriptHTML / CSSReact Native
Websites · Software · Consulting
Technology that grows with your business. We create websites and custom software, with care from the first idea to continuous improvement.
Ideas become
real.
Castillo TechFrom your next website to your next product.
Explore our solutionsHow we can helpYour next step.
Your next step.
The right solution.
Two ways to work together. The same care for what your business needs.
01 / Digital presence
Websites
Institutional websites, e-commerce and WordPress experiences. From development to ongoing improvement with CT Evolution.
Projects + monthly improvement plans02 / Products & operationsSoftware
Web systems, SaaS platforms, apps and integrations. Architecture and development shaped around your context.
Scope-based proposals and pricingSelected work / 04Ideas that made it
Ideas that made it
into the real world.
Products, experiences and systems. Each project, a different context to solve with care.
From SaaS platforms to interfaces for the physical world.
All projectsWho builds with youCuriosity to understand.
Curiosity to understand.
Care to build.
ct↗
Castillo Tech is a technology consultancy founded by Agustin Castillo, a computer engineer and developer with experience since 2018. We connect business needs with what technology can do.
From websites for Brazilian and U.S. clients to platforms and integrations, every delivery starts with understanding the context. You work directly with the person who plans, develops and supports your solution.
Founder’s résuméReact, Next.js and TypeScript to turn real needs into clear, responsive and usable experiences.
Separation of concerns, integrations and decisions that balance complexity, quality and room to evolve.
Testing, CI/CD, AWS infrastructure and observability. Understanding what happens in production is part of delivery.
8+years of founder experience
Brazil ↗ U.S.collaboration across borders
Vision → productionend-to-end involvement
Background & technical expertiseExpertise that
Expertise that
becomes delivery.
The experience of Agustin Castillo, founder and technical lead, applied to Castillo Tech projects.
Websites
WordPressPHPGutenbergACFTwig / BladeWooCommerce
Software & data
Node.jsNestJSREST / GraphQLPrismaPostgreSQLFirebase
Quality & operations
JestPlaywrightCI/CDDockerAWSTerraform
Computer Engineering · UFSCarPostgraduate Software Architecture · FIAPPortuguese · English · Spanish