Sarmun Bustillo

I'm a Frontend Web-Dev based in Hamburg devoted to crafting exceptional web experiences. Currently, I am focused on building accessible, stylish and meaningful web products.

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March 2020 - present

F7 Media

F7 Media is a digital agency that specializes in development, conception, design, hosting, consulting, content, and project management. I am responsible for:

  • Developing and maintaining client websites and web-apps
  • Rewriting and migrating websites and web-apps into modern technologies
  • Constantly improving websites and web-apps performance in order to have better web vitals as well as SEO
  • Improving accessibility and usability of websites
  • CMS integration and templating
  • Maintaining and further development of our custom libraries
  • Taking part in the task force group in charge of migrating and upgrading the company's technologies and projects to Headless CMS and SPA
  • Collaborating closely with designers to achieve pixel perfect designs
  • Landing pages and product launches with a focus on interactions and animations

Have a look at some of the projects and clients.

August 2019 - present


As a freelancer I do tasks such as:

  • Developed and managed client websites and web-apps
  • Developed, maintained and integrated CMS integrations and templates for clients
  • Modernized web stacks across multiple projects to improve website performance, have better web vitals, and have an overall modern look and feel
  • Designed layouts to match the brand look and implemented them
  • Enhanced clients SEO rankings
  • Applied concepts and tactics to boost online visibility, sales, and brand promotion

In the projects section you will find some of my projects as a freelancer.


Here are a few technologies I’ve been working recently:

  • Javascript
  • Typescript
  • React
  • NextJS
  • GraphQL
  • Vercel
  • CSS
  • SCSS
  • Tailwind
  • Bootstrap
  • Styled-Components
  • HTML5
  • Fluid Template Engine
  • Typo3 CMS
  • Dato CMS
  • Git


  • Spanish (native)
  • English (bilingual)
  • German (Proficient/Fluent)

Some Things I’ve Built

Language Service Solutions

Language Service Solutions

LSS provides translation and interpretation services as well as consulting around language services.

  • Modernized web stack to improve website performance, have better web vitals, and overall modern look and feel
  • implemented a pixel perfect redesign
Cafe Rustico

Cafe Rustico

Colombian Coffee shop and restaurant

  • Design layout
  • Design implementation
  • Web vitals
  • Concept and strategies to increase online precense, sells and brand marketing
  • CMS integration
NFT Market

NFT Market

NFT market place: Buy, sell and transfer NFTs

  • Local blockchain testing environment
  • Metamask integration
  • Unit tests
  • Buy, sell and transfer NFTs logic


Little demos I've built to learn from and teach others