Hello, I am
Denis Hernandez

I build things for the web.

Denis Hernandez avatar

About

I'm a Senior Frontend Engineer currently working at DocPlanner tech.

I have 10 years of experience designing and building both user-facing applications and internal platforms.

I specialize in Vue and React-based architectures, frontend performance, testing, and developer experience.

My work spans international news sites, SaaS tools for healthcare professionals, and internal developer platforms that empower engineering teams.

Currently strengthening my leadership skills, focusing on solutions that balance technical quality, team productivity, and user impact.

Education

BS in Computer Science Engineering

University Jaume I; Castellón de la Plana, SpainJuly 2015

Skills

I thrive in cross-functional environments where quality, collaboration, and simplicity are core values. Below is an overview of my main technical skills and tools.

Frontend logo
Frontend
  • HTML
  • CSS
  • JavaScript
  • TypeScript
  • React
  • Vue.js
  • Next.js
  • Tailwind CSS
  • Vuetify
  • Pinia
Backend logo
Backend
  • Node.js
  • Express
  • PHP
  • Laravel
  • MySQL
  • RESTful APIs
Others logo
Tooling & Testing
  • Git
  • CI/CD
  • Docker
  • AWS
  • Webpack
  • Vite
  • Vitest
  • Cypress
  • Accessibility

Experience

DocPlanner logo

DocPlanner

Senior Frontend DeveloperJune 2021 - Present

As part of the Platform team, I focus on provide essential platforms and tools that empower stream-aligned teams to be more autonomous and impactful. This enables them to prioritize customer needs over technological and methodological challenges.

Previously, I contributed to the development and improvement of DocPlanner's SaaS application for doctors and clinics, ensuring continuous enhancement of its performance and user experience.

Key responsibilities and highlights:

- Led frontend development across multiple internal products, defining technical standards and ensuring maintainability and scalability.

- Built platforms to support on-demand testing environments and internal developer portals that accelerate delivery and innovation.

- Modernized legacy AngularJS codebase to Vue 3 and improved overall frontend architecture.

- Drove UX improvements and user adoption through data-driven enhancements, discovery sessions, and continuous feedback loops.

- Collaborated with cross-functional teams to streamline processes and improve overall efficiency.

  • HTML
  • CSS
  • TypeScript
  • React
  • Vue.js
  • Vite
  • Vuetify
  • Pinia
  • Jest
  • Cypress
  • Docker
  • CI/CD
  • Git
June 2021
BBC News logo

BBC News

Software EngineerJan 2019 - May 2021

Worked alongside journalists, product managers, business analysts, designers, testers and developers, directly contributing to one of the world's most visited news websites, serving a global audience of hundreds of millions.

Built the next generation of BBC News articles on the public service website.

Rebuilt the 41 BBC World Service language front pages in the cloud using full stack JavaScript.

Created a React component library used across products.

Served as Accessibility Champion, ensuring accessibility was embedded at every stage from requirements to QA.

  • HTML
  • CSS
  • JavaScript
  • TypeScript
  • React
  • Node.js
  • Webpack
  • Styled Components
  • Jest
  • Cypress
  • CI/CD
  • AWS
  • Git
Jan 2019
LSI logo

LSI Education

Web developerNov 2015 - Dec 2018

Full-stack development and maintenance of LSI websites.

Designed responsive, user-friendly interfaces ensuring a seamless experience.

Managed and developed new modules in E-learning platform and own Content Management System.

Implemented SEO strategies to optimize website visibility and improve search engine rankings.

Supported Webmaster, Sales Representatives, Social Media Coordinators, and academic and administrative staff at LSI schools worldwide.

  • PHP
  • HTML5
  • CSS3
  • Bootstrap
  • jQuery
  • Laravel
  • MySQL
  • Git
  • Wordpress
Nov 2015
Actualmed logo

Actualmed

Software EngineerJul 2015 - Nov 2015

Developed a cloud-based system for managing and digitalizing medical images (RIS/PACS) using DICOM and HL7 standards.

Enabled medical staff to remotely access and diagnose studies from anywhere, improving workflow efficiency.

  • PHP
  • Laravel
  • HTML
  • CSS
  • JavaScript
  • jQuery
  • MySQL
  • DICOM
Jul 2015
Actualmed logo

Actualmed

Internship StudentOct 2014 - Jan 2015

Developed a system to delivery radiological diagnoses to patients and referring physicians, integrated within a RIS/PACS platform.

The system offers the possibility of generating a signed executable for different platforms (Windows and MacOS), which contains the patient study images (DICOM) and a medical image viewer RadiAnt or OsiriX).

  • PHP
  • Laravel
  • HTML
  • CSS
  • JavaScript
  • jQuery
  • MySQL
  • Bash Scripting
Oct 2014

Contact

You can find me on: