Background

RodrigoCrespillio

Developer

Developer/Informatics Analyst. Frontend-focused engineer building performant, accessible UIs.

Connect on LinkedIn

About

Engineer with 6+ years crafting web products end‑to‑end. I enjoy clear architectures, DX improvements, and close collaboration to ship reliable experiences.

Have questions? Let's connect on LinkedIn.

Experience

Senior Frontend Developer · Arionkoder

Remote

Jan 2024 – Present

  • Lead development of frontend features in React and Next.js for multiple products.
  • Partner with designers and backend engineers to ship reliable, accessible UX.
ReactNext.jsTypeScript

Full‑stack Architect (frontend‑oriented) · Arcadia Tech

Argentina

Mar 2022 – Jan 2024

  • Led a team of 3 developers delivering apps for third‑party companies.
  • Designed and built React/Next.js frontends with Node.js backends; shipped React Native apps to iOS/Android stores.
  • Implemented Redis‑backed services and cloud integrations.
ReactNext.jsNode.jsReact NativeRedis

Full‑stack Developer (JavaScript) · Mercado Libre

Buenos Aires

Jan 2020 – Mar 2022

  • Built and maintained apps across the company ecosystem using React and Node.js.
  • Contributed changes to Android (Java/Kotlin) and Grails services; practiced Scrum and Git workflows.
  • Wrote tests with NightwatchJS and React Testing Library.
ReactNode.jsJavaKotlinGrails

Frontend Developer (Node backend) · Despegar

Parque Patricios

Apr 2019 – Jan 2020

  • Maintained Angular applications with a Node.js backend and Web Components APIs.
  • Applied Git versioning and unit testing; worked with Kanban process.
AngularNode.jsWeb Components

Web UI Developer · Globant

San Telmo

Jan 2016 – Apr 2019

  • 1 year: React + Redux app for a U.S. banking client; English communication; Scrum, Git; tests with Karma/Jasmine.
  • 2 years: Angular + Cordova hybrid app for a U.S. healthcare client; English communication; Scrum ceremonies.
ReactReduxAngularCordovaKarmaJasmine

Intern, Systems · Compañía Introductora de Buenos Aires - Dos Anclas

Buenos Aires

Dec 2015 – Jan 2016

  • Assisted with IT systems support and web tasks.
  • Supported team with documentation and small fixes.
HTMLCSSJavaScript

Active Personal Projects

Estudio Alasia — Accountant Platform

Full web platform for accountants and clients: secure portal for login, reporting, data ingestion from exchanges and payment providers, and payments management.

Next.jsReactNode.jsAWSVercel
Live

Clothes Exchange — Community Platform

Full-stack clothing exchange platform with user authentication, item management, favorites system, messaging, and image uploads. Built with modern web technologies and real-time features.

Next.jsReactTypeScriptTailwind CSSPostgreSQLNextAuth.jsDrizzle ORM
Live

Skills

JavaScriptTypeScriptHTML5CSS3SQLPythonJavaPHPGo (Basic)ReactNext.jsAngularVue.jsSvelteReact NativeExpoReduxSWRRxJSStorybookWeb ComponentsTailwind CSSCSS ModulesStyled ComponentsEmotionSass/SCSSPostCSSChakra UIMaterial UI (MUI)Framer MotionJestReact Testing LibraryCypressPlaywrightVitestNightwatchJSChaiKarmaESLintViteWebpackBabelNxnpmYarnNode.jsExpressNestJSFastifyKoaREST APIsWebSockets / Socket.ioTypeORMPostgreSQLMySQLSQLiteMongoDBRedisDynamoDBElasticsearchAWSAWS LambdaAPI GatewayS3CloudFrontCognitoRDSECS/FargateDockerKubernetesTerraformVercelSentryDatadogTDDClean ArchitectureMonorepoMicroservicesDomain‑Driven Design (DDD)CursorGeminiDeepSeek API

Education

Informatics Analyst · UADE

2013 – 2020

UADE Informatics Analyst degree

Economics & Management (High School) · Instituto San Martín

1997 – 2012

Chess activities; Cambridge-certified English

Certifications

React Native: Mobile app for sports management (practical)

LinkedIn

AWS Essential Training for Developers

LinkedIn

Introducción a React

Acámica

Modernízate con AngularJS

Acámica

Dominando Sass

Acámica

Fundamentos de ECMAScript 6

Acámica

CSS Avanzado

Acámica

Curso de Git

Acámica

Responsive Design

Acámica

Java HIBERNATE

EducacionIT

Java Advanced Programming: Threads, Networking, J2SE

EducacionIT

Shaping up with Angular.js

Code School

Contact

LinkedIn