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Alex Robaina

Senior Full-Stack Developer — React / Next.js · Node.js / Nest.js

Argentina+54 9 11 3899 7032alexrobainaph@gmail.comGitHubLinkedInInstagram

Summary

Senior full-stack developer with 6+ years building production web and mobile applications across fintech, blockchain and e-commerce. Comfortable owning a system end to end — frontend, backend and cloud infrastructure on AWS with Terraform — and increasingly with an AI-agentic development workflow (Claude Code + BMAD) that lets a small team ship at a larger team's pace. Co-founder of Mi Taller, a car workshop management SaaS now used by 560 shop owners, built and deployed from scratch.

Experience

  1. Co-Founder & Full-Stack Developer · Mi Taller

    • 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

  2. 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

  3. 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

  4. 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

  5. Full-Stack Developer · Scanworks — range.org

    • 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

  6. 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

  7. 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

  8. 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

  1. 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

Skills

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

Education

  • Full-Stack Developer Program · Acámica, Argentina

    2018–2019

  • Introduction to JavaScript · Codecademy

    2018

Languages

Spanish — native. English — professional working proficiency (B2).