Product engineering
Taking a product from a rough brief to something running in production, and co-founding one: Mi Taller went from zero to 560 active shop owners.
Available for work
Alex Robaina
React / Next.js · Node.js / Nest.js
Six years building production web and mobile applications across fintech, blockchain and e-commerce. I own systems end to end — frontend, backend and cloud infrastructure — and co-founded Mi Taller, a workshop management SaaS now used by 560 shop owners.
560Active users on Mi Taller
6+Years building products
23Open-source contributors
UTC-3Timezone
01/Overview
What I do
I work across the whole stack and increasingly with an AI-agentic development workflow — Claude Code paired with the BMAD framework — which lets a small team scope, build and ship at a larger team's pace.
Frontend systems
React, Next.js and React Native applications, and the reusable component libraries that keep them fast and consistent as a team grows.
Backend & infrastructure
Nest.js and Express services over PostgreSQL, plus the AWS infrastructure to run them — provisioned with Terraform, not by hand.
AI-assisted delivery
Claude Code with the BMAD agentic workflow — analyst, PM, architect, dev and QA agents — to plan, implement and test across the stack.
Stack
- Languages
- JavaScriptTypeScriptHTML5CSSSCSS
- Frontend
- ReactNext.jsReact NativeReduxMobxReact QueryTailwind CSSStyled ComponentsVite
- Backend
- Node.jsNest.jsExpressGraphQLREST APIs
- Databases & ORM
- PostgreSQLMongoDBPrisma
- Cloud & DevOps
- AWS (EC2, S3)Google CloudTerraformDockerNginx Proxy ManagerUbuntu Server
- AI-assisted development
- Claude CodeBMAD agentic workflow
- Testing
- JestReact Testing Library
02/Trajectory
Where I have worked
Six years across fintech, blockchain, e-commerce and a software factory — mostly remote, mostly full-stack.
·Argentina
Co-Founder & Full-Stack Developer
- Co-founded a car workshop management SaaS from scratch, now used by 560 active shop owners to manage jobs, customers and daily operations.
- Architected and built the Next.js web app and a Nest.js/PostgreSQL API consumed by both the web and React Native mobile apps.
- Designed and deployed the full AWS infrastructure with Terraform, letting the team ship and scale without manual server management.
- Integrated Claude Code with the BMAD agentic framework — analyst, PM, architect, dev and QA agents — to scope requirements, generate implementation plans, write code and run test coverage, compressing the planning-to-production cycle for a lean team.
Next.jsReact NativeNest.jsPostgreSQLAWSTerraformClaude CodeBMAD·Remote
Full-Stack Developer
Max Planck
- Maintain and extend the production Next.js web and React Native mobile applications behind the company's core product.
- Design and build new Nest.js/PostgreSQL backend services to support ongoing frontend feature development, owning changes end to end.
- Use Claude Code and the BMAD agentic workflow day to day to plan features and architecture decisions before implementation, speeding up delivery on both sides of the stack.
Next.jsReact NativeNest.jsPostgreSQLAWSClaude Code·Remote
Full-Stack Developer
Tienda Nube — Punto de Venta
- Built new features for Punto de Venta, a Next.js application used by in-store sellers to run their shops.
- Integrated Tienda Nube's internal APIs to keep in-store and online inventory synchronised in real time.
Next.jsReactReact QueryTailwind·Remote
Full-Stack Developer
Composable.finance — Solana IBC Explorer
- Built a blockchain explorer for monitoring Solana IBC blocks and transactions in real time.
- Built the reusable base component library — buttons, cards, inputs, animations — used across the application.
- Integrated GraphQL for real-time data updates against a PostgreSQL database hosted on AWS.
Next.jsTailwindGraphQLPostgreSQL·Remote
Full-Stack Developer
- Built and maintained range.org, a blockchain app for monitoring IBC transactions, from shortly after launch.
- Built and maintained the backend API storing users, wallets, contracts and alerts with Node.js, Express and PostgreSQL.
- Built reusable UI components including an in-app chat, step-by-step forms and animations; deployed on Google Cloud.
ViteReactTailwindNode.jsExpressPostgreSQL·Buenos Aires, AR
Front-End Developer
Telecom Argentina — Personal Pay
- Built new features for Personal Pay, a fintech mobile app, as part of a five-person cross-functional team.
- Worked directly with the UX team to translate designs into React Native components.
React NativeReduxRedux-SagaStyled ComponentsJest·Remote
Full-Stack Developer
Eleven Yellow — Crypto Investors
- Built a Next.js/Express application for crypto investors in the Terra ecosystem, including Google login and crypto wallet connections.
Next.jsExpressPostgreSQLPrisma·Argentina
Frontend Developer
Digbang
- Maintained and extended React applications for multiple client businesses in a software factory, applying scalable, object-oriented coding practices.
ReactTypeScriptMobxSCSS
Founder projects
·Argentina
Founder — open-source pet & veterinary management app
Pet's Love
- Built an open-source app for managing veterinary clinics and shelters — medical records, expenses, inventory and adoption workflows — grown to 23 GitHub contributors.
- Built the frontend component library and a complex multi-step form with Vite, React and TypeScript.
- Built and maintain the Node.js/Express/PostgreSQL API, self-hosting the full stack on a Raspberry Pi 4 with Ubuntu Server, Docker and Nginx Proxy Manager.
ViteReactTypeScriptNode.jsExpressPostgreSQLDocker
03/Missions
Selected work
Products I have built and shipped. Where a deployment is no longer online, the entry stays without a link rather than pointing at a broken page.
Solana IBC Explorer
2024A blockchain explorer for monitoring Solana IBC blocks and cross-chain transactions in real time, with GraphQL over a PostgreSQL database on AWS.
Built the explorer and its base component library.
Next.jsGraphQLTypeScriptTailwind
Pet's Love
2022An open-source platform for veterinary clinics and shelters — medical records, expenses, inventory and adoption workflows — self-hosted end to end.
Founded and maintained; 23 open-source contributors.
ReactExpressPostgreSQLDocker
Chatbot AI
2024A multilingual AI assistant that answers customer questions about a company's services, wired into Chatwoot and Google Sheets.
Automated first-line support in two languages.
Next.jsOpenAINode.jsChatwoot
04/Transmit
Let's work together
Looking for someone who can own a product from idea to production — frontend, backend and the infrastructure under it? I am open to contract and full-time work, remote from Argentina.