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AVAILABLE FOR REMOTE WORK

I take charge of your digital product, from the first decision to the deploy.

Ramón Chancay is a product engineer based in Guayaquil, Ecuador, with over 13 years of professional experience shipping production software. He takes end-to-end ownership of a business's digital product: the mobile app, the website or platform, and the AI chatbot, from the first product decision to the deploy and the ongoing maintenance. He specializes in React, Next.js, React Native, and AI-augmented products including RAG systems, LLM integrations, and conversational agents. Since 2019 he has worked as an independent contractor serving 50+ clients across Ecuador, the United States, Spain, and Mexico, fully remote. He is Top Rated on Upwork with 100% Job Success. His shipped projects span SaaS platforms, streaming services, hospital management systems, health apps, and AI agent platforms. He has led mobile development teams, owned booking implementations and code reviews for international clients, provided architecture consulting for the redesign of Diario El Universo's web platform, and maintained react-rainbow-components, an open-source component library. His engineering practice includes code review, unit and end-to-end testing, structured outputs, and LLM evals. He is available for long-term full-stack engagements and can be reached at hola@ramonchancay.me.

Product engineer, fully remote, based in Guayaquil. Your mobile app, your website, your AI chatbot: one person who decides what to build, builds it with React, React Native and large language models, and keeps it alive in production. Top Rated on Upwork with 100% Job Success.
BASEDGuayaquil, Ecuador · GMT-5
FOCUSProduct end to end · web, mobile & AI · 13+ years
STATUSBooking remote clients · Q3 2026
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WHAT I TAKE ON

One product, one person accountable.

Pick what you need and email me directly. No forms.

I take the app from the first idea to the store and keep it there. Product decisions, build, release and the updates after launch are all mine, so you review progress instead of coordinating vendors.

What I handle
  • →Scoping the first version and cutting what can wait
  • →Build in React Native + Expo, or native Swift and Kotlin
  • →App Store and Play Store submission, review and release
  • →OTA updates, crash monitoring and iteration after launch
Stack
React NativeExpoEASSwiftKotlinTypeScript
Featured project
RevUp
Native app for music revenue management
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Let's talk about your app
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From a landing that has to convert to the platform your operation runs on. I own the architecture, the interface and the backend behind it, and hand you a site your team can actually keep updating.

What I handle
  • →SaaS, dashboards and B2B portals
  • →High-performance landings (Core Web Vitals)
  • →Headless e-commerce and a CMS your team can use
  • →APIs in Node, Fastify, tRPC and NestJS
Stack
Next.jsAstroReactTypeScriptTailwindSupabase
Featured project
UTrack Orders
FinTech SaaS in Next.js + Supabase
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Let's talk about your site
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An assistant that answers from your own data and does real work, not a demo. I decide where a model helps and where it does not, wire it into your product, and measure whether the answers hold up.

What I handle
  • →Chats and agents grounded in your documents (RAG)
  • →Assistants on WhatsApp, web and inside your app
  • →AI-powered document and report generation
  • →Cost, latency and quality measured with evals
Stack
OpenAIAnthropicGeminiLangChainRAGEmbeddings
Featured project
Clona
AI agents with RAG and 3D avatars
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Let's talk about your assistant
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The developer left, the agency finished, or the codebase has drifted. I read what is there, tell you honestly what is worth keeping, and take over the product as its ongoing owner.

What I handle
  • →Codebase and architecture audit with a written verdict
  • →Taking over a project left half-finished
  • →Adding a new platform on top of what you already built
  • →Ongoing maintenance, releases and a roadmap you can read
Stack
AuditRefactorTestingCI/CDMigrationsRoadmap
Featured project
OromarGo TV
TV app built on top of the existing Expo codebase
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Let's talk about your product
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HOW I TAKE OWNERSHIP

From your problem to your product, in four moves.

One person accountable, from the decision to the maintenance

  1. Understand and cut

    First I learn what your business runs on and what the product actually has to achieve. Out of that comes the scope of the first version and, more importantly, the list of what we are not building yet.

    GoalScopeFixed quote

  2. Build in the open

    The product grows in weekly increments you can open and use, not a reveal at the end. You see progress every week, so nothing runs six weeks in the wrong direction.

    Weekly buildsDemosCourse corrections

  3. Ship it

    Deploy, store submissions, domains, analytics and the boring setup nobody wants to own. The code, the accounts and the keys are yours from day one.

    DeployApp StoreDomains & accounts

  4. Measure and keep it alive

    After launch I watch what people use, what breaks and what to build next. You get a roadmap written in plain language, not a ticket backlog you have to decode.

    AnalyticsError trackingRoadmap

No agency in the middle and no account manager relaying messages. You talk to the person making the product decisions and writing the code, from the first call onward.

THE ENGINEERING BEHIND IT

Product judgment, and the engineering to back it.

13+ years · every claim below is linkable
EXPLORE
01
Work
18 recent and live · shipping products since 2012
02
Mobile apps
7 apps in production · have one already? I can take it over
03
Open source & Labs
2 repos in the open · voice agents, Swift and experiments
04
About
Stack, experience and talks
05
Contact
Available for new projects
SECOND OPINION
13+ years · product, architecture, team · ES / EN

When you need judgment,
not just code.

Not every engagement needs someone to take the whole product. Sometimes you already have a team and need someone who has shipped this before to look at it. A decision nobody can settle, a stack under evaluation, a roadmap that feels wrong, an estimate you do not trust. A decade of shipping across web, mobile and AI left me something more useful than a stack: judgment about what is worth building.

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