I build web applications, SaaS platforms, and digital products for businesses that want to move forward. AI is not an afterthought: I consider AI integration from the start, so your product works smarter, can grow with you, and is ready for what comes next. From intelligent search and document processing to automation, agents, and chatbots.
End-to-end product work: scoping, architecture, build, and launch. The most common engagement — a small SaaS, an internal tool, an AI-assisted workflow, or an early prototype that needs to become a production-ready product.
Studio-grade marketing sites, portfolios, and product landing pages. Designed in-browser, built on the right modern stack, fast by default. For founders who want their website to reflect the quality of their product.
Work with me on architecture, code review, AI-assisted workflows, or product delivery decisions. Useful when you need a focused developer-consultant for a defined project, a company initiative, or a decision that needs another technical set of eyes.
Five stages — most engagements use four. Discovery is always first. Support is optional. The work in between is where the time goes.
Scope, constraints, success criteria. Everything mapped out before any code is written.
From wireframe to interface, carefully developed and shaped around the user. Decisions are made in the open — you see them as I make them.
Built to be technically reliable and transparent. AI helps speed up the work, while human review and demos ensure the quality holds up.
From launch to real-world use, with room to learn and make focused improvements.
From ongoing support to a complete handover. You choose.
Castro Consultancy is a studio of one by default. When the scope grows, I can help shape the right team around the work.
With one technical point of contact, communication, technical decisions, and progress stay clearly aligned.
For bigger work, I can help assemble trusted collaborators: developers, product owners, sales or growth support, marketers, and content creators.