David Vargas
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Available for new projects

David Vargas

Senior Front-End Developer

I build web and mobile products end to end: from Angular and React to the backend on AWS.

8+ years of experience · Remote · UTC-5 · Colombia

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Projects

Real products I designed and built, with their current status.

  1. Dalem Conecta dashboard
    In production

    Dalem Conecta

    CRM for wholesale and retail travel agencies in Colombia, live in production.

    • NestJS
    • Prisma
    • PostgreSQL
    • Angular
    View case study
  2. Home page of the Dalem Conecta website
    In production

    Dalem Conecta website

    Static website that introduces Dalem Conecta to travel agencies. Fast, optimized for search and in production.

    • Astro
    • TypeScript
    • CSS
    • Cloudflare Pages
    View case studyView live site
  3. DriverFinanceTracker home: monthly balance, income, expenses and small recurring expenses
    Released

    DriverFinanceTracker

    Offline Android app for ride-hailing drivers to log income and expenses in a few taps.

    • Ionic
    • Angular
    • Capacitor
    • SQLite
    View case study
  4. Experiment

    Tennis Live Analytics

    A real-time data and ML project that estimates each player's chance of winning live tennis matches, evaluated with paper trading.

    • Python
    • Machine Learning
    • JSON
    • CLI
    View case study
  5. In development

    Centinela

    A multi-tenant SaaS web security scanner in development: the foundations exist today; scanning is planned.

    • Next.js
    • FastAPI
    • PostgreSQL
    • Redis
    View case study

What I can build for you

Have a project? Let's talk

Experience

  1. Front-End Developer

    Replyly

    – · Remote

    • Designed and implemented user flows for managing AI agents, conversation pipelines, and client configurations.
    • Integrated RESTful APIs and real-time WebSocket connections to power live conversation monitoring.
    • Delivered the complete UI layer that let the product launch its MVP in a competitive AI agent market.
    • Angular
    • REST APIs
    • WebSockets

  2. Front-End Developer

    Freelance

    – · Remote

    • Migrated a CMS from Angular 13 to Angular 15 and redesigned it with Angular Material so it works on any screen.
    • Built a Storybook component library that sped up delivery across teams.
    • Built conversational AI and e-commerce projects with React, Next.js, WebSockets and AWS Serverless.
    • Angular
    • Angular Material
    • Storybook
    • React
    • Next.js
    • AWS Serverless
    • WebSockets

  3. Front-End Developer

    Tul

    – · Remote

    • Built a modular, responsive SPA with custom state services.
    • Led the move to Micro-Frontends with Module Federation so the product could scale and each part could ship independently.
    • Kept test coverage above 90% with Jasmine and Karma.
    • Angular
    • Micro-Frontends
    • Module Federation
    • Jasmine
    • Karma

  4. Full Stack Developer

    Blankfactor

    – · Medellín, Colombia

    • Built REST APIs and responsive interfaces with Angular and Node.js.
    • Led key features for an edtech platform and a marketing product, from requirements to production.
    • Angular
    • Node.js
    • REST APIs

  5. Back-End Developer (Node.js & AWS)

    Intergrupo

    – · Medellín, Colombia

    • Refactored legacy code to make it more reliable and easier to maintain.
    • Led the migration to microservices with Node.js, AWS Lambda and Serverless Framework.
    • Node.js
    • AWS Lambda
    • Serverless Framework

  6. Application Development Analyst

    Accenture

    – · Medellín, Colombia

    • Built modular Angular SPAs that integrate third-party APIs.
    • Wrote thorough unit tests with Jasmine and Karma for every release.
    • Angular
    • Jasmine
    • Karma

  7. Full Stack Developer

    Parse Software Development

    – · Medellín, Colombia

    • Created Angular Material component libraries that sped up building new screens.
    • Built responsive SPAs with third-party integrations and custom state management.
    • Angular
    • Angular Material

My base

Skills

Languages

  • English · B1 (intermediate)
  • Spanish · Native

Certifications

  • Frontend DeveloperPlatzi ·
  • JavaScript Back-EndTalently ·

About me

Photo of David Vargas

I'm a front-end developer with 8+ years of experience building web and mobile products. I work mostly with Angular and React, and I'm comfortable on the backend with Node.js and AWS.

I like owning work end to end, from micro-frontend architecture to deployment. I work remotely from Colombia (UTC-5) and I'm open to full-time roles and freelance projects.

Have a project or a role in mind?

Send a message here or use the channel you prefer. I'll get back to you as soon as I can.

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Email
WhatsApp+57 301 194 3619
LinkedInin/gdavidvargas