Simera Professional Key (SPK)

Sergio R

Panama

Senior Frontend Stack Developer

$ 6,700/month

10+ yrs exp

Passionate Full Stack Developer with 15+ years of experience crafting scalable Web & Mobile solutions. Skilled in PHP, MySQL, jQuery, JavaScript, JSON, HTML5, Vue.js, React, Node.js, NestJS, AWS Lambda, DynamoDB, PostgreSQL, and RESTful APIs. Adept at transitioning monolithic systems into microservices architectures and optimizing front-end experiences. Trilingual (English, French, Spanish) with Canadian & Salvadoran citizenship: ready for international opportunities!

Skills

  • AngularJS
  • Backend Development
  • CSS
  • CSS3
  • Databases
  • Docker
  • HTML
  • HTML5
  • Java
  • JavaScript
  • jQuery
  • Linux
  • Microservice
  • Microsoft SQL Server
  • MongoDB
  • MySQL
  • Node.js
  • PHP
  • PostgreSQL
  • SQL
  • Swift
  • Typescript
  • Vue.js
  • Web Design
  • Web Services
  • Wordpress
  • JavaScript ES6
  • AdonisJS
  • Angular
  • Api REST
  • App Developer
  • AWS Lambdas
  • BackEnd Developer
  • BI Developer
  • BOT Developer
  • C#
  • c# Developer
  • Full Stack
  • Full Stack Developer
  • HR Databases
  • iOS Developer
  • Jest
  • Joomia
  • Joomla
  • JSON
  • Laravel
  • Microservices
  • NestJS
  • NextJS
  • NodeJS
  • Prisma
  • RESTful APls
  • SwiftUI
  • Vuex
  • Woocommerce
  • HTML/CSS
  • RESTful APIs
  • WordPress CMS
  • React.js
  • Microsoft Server
  • Data Bases
  • Website Design
  • vercel
  • Fullstack
  • Nuxt.js
  • Laravel
  • Java.
  • Nest.js
  • Next.js
  • HTML, CSS, JavaScript, Bootstrap, Tailwind.
  • Nuxt
  • Pinia
  • Back End Developer
  • web3
  • Supabase
  • React,js
  • vuetify
  • Express.js
  • HTML5 & CSS3
  • REST APIs
  • MSQL
  • Full Stach
  • Develper
  • Amazon Web Services (AWS)
  • Fullstack developer
  • CursorAI

Sergio R

Panama

Senior Frontend Stack Developer

$ 6,700 /month

Part Time: $ 4,450/month

10+ yrs exp

Passionate Full Stack Developer with 15+ years of experience crafting scalable Web & Mobile solutions. Skilled in PHP, MySQL, jQuery, JavaScript, JSON, HTML5, Vue.js, React, Node.js, NestJS, AWS Lambda, DynamoDB, PostgreSQL, and RESTful APIs. Adept at transitioning monolithic systems into microservices architectures and optimizing front-end experiences. Trilingual (English, French, Spanish) with Canadian & Salvadoran citizenship: ready for international opportunities!

Skills

  • AngularJS
  • Backend Development
  • CSS
  • CSS3
  • Databases
  • Docker
  • HTML
  • HTML5
  • Java
  • JavaScript
  • jQuery
  • Linux
  • Microservice
  • Microsoft SQL Server
  • MongoDB
  • MySQL
  • Node.js
  • PHP
  • PostgreSQL
  • SQL
  • Swift
  • Typescript
  • Vue.js
  • Web Design
  • Web Services
  • Wordpress
  • JavaScript ES6
  • AdonisJS
  • Angular
  • Api REST
  • App Developer
  • AWS Lambdas
  • BackEnd Developer
  • BI Developer
  • BOT Developer
  • C#
  • c# Developer
  • Full Stack
  • Full Stack Developer
  • HR Databases
  • iOS Developer
  • Jest
  • Joomia
  • Joomla
  • JSON
  • Laravel
  • Microservices
  • NestJS
  • NextJS
  • NodeJS
  • Prisma
  • RESTful APls
  • SwiftUI
  • Vuex
  • Woocommerce
  • HTML/CSS
  • RESTful APIs
  • WordPress CMS
  • React.js
  • Microsoft Server
  • Data Bases
  • Website Design
  • vercel
  • Fullstack
  • Nuxt.js
  • Laravel
  • Java.
  • Nest.js
  • Next.js
  • HTML, CSS, JavaScript, Bootstrap, Tailwind.
  • Nuxt
  • Pinia
  • Back End Developer
  • web3
  • Supabase
  • React,js
  • vuetify
  • Express.js
  • HTML5 & CSS3
  • REST APIs
  • MSQL
  • Full Stach
  • Develper
  • Amazon Web Services (AWS)
  • Fullstack developer
  • CursorAI

Senior Frontend Stack Developer

GMT
August 2025 - present

Led frontend development for media-facing web applications, focusing on component architecture, responsive UIs, and accessibility improvements. Implemented TypeScript, React/Next.js, state management, and frontend testing to enhance reliability and developer velocity. Optimized performance and CI/CD workflows, collaborated with design and backend teams to ship features end-to-end, and introduced AI-assisted developer tools (Claude Code, GitHub Copilot) to automate repetitive tasks and accelerate prototyping.

Senior Frontend Stack Developer

GMT
August 2025 - present

Lead frontend engineer delivering polished, production-grade user interfaces for media products: Led frontend development for media-facing web apps: component architecture, responsive UIs, and accessibility improvements. Implemented TypeScript, React/Next.js, state management, and frontend testing to improve reliability and developer velocity. Optimized performance and CI/CD workflows; collaborated with design and backend teams to ship features end-to-end and introduced AI-assisted developer tools (Claude Code, GitHub Copilot) to automate repetitive tasks, accelerate prototyping.

Full Stack Engineer

Independent
May 2025 - September 2025

Delivered end-to-end SaaS features for startups, including responsive UIs, RESTful APIs, and microservices. Leveraged technologies such as Vue 3, React, Next.js, TypeScript, Node.js, Laravel, Prisma, MySQL/Postgres, Docker, Vercel, and Supabase. Implemented CI/CD pipelines, introduced AI-assisted developer tools, and mentored engineers on best practices.

Full Stack Engineer

Independent
May 2025 - September 2025

Senior-level contractor/freelancer delivering end-to-end SaaS features for startups: Delivered end-to-end SaaS features: responsive UIs, RESTful APIs, and microservices. Tech: Vue 3, React, Next.js, TypeScript, Node.js, Laravel, Prisma, MySQL/Postgres, Docker, Vercel, Supabase. Implemented CI/CD pipelines, introduced AI-assisted developer tools, and mentored engineers on best practices.

Senior Full Stack Developer

FactoryFix
October 2023 - April 2025

Contributed to the development and enhancement of the SaaS platform. Responsibilities spanned both frontend and backend development, leveraging Vue 3, Pinia, and Vuetify for the frontend, and NestJS with TypeScript on the backend, ensuring robust and maintainable code. Utilized Cursor AI and GitHub Copilot to streamline repetitive tasks and accelerate coding.

Senior Full Stack Developer

FactoryFix
October 2023 - April 2025

As a Senior Full Stack Developer at FactoryFix, I contribute to the development and enhancement of our SaaS platform. My responsibilities span both Frontend and Backend development where I leverage a powerful tech stack including Vue3, Pinia, Vuetify for the Frontend and NestJS with TypeScript on the backend, ensuring robust and maintainable code. Our CTO introduced us to Cursor AI and GitHub Copilot to streamline repetitive tasks and speed coding.

Full Stack Engineer

FactoryFix
April 2023 - October 2023

Implemented new features for the in-house SaaS and modified existing components to improve the Pro Search Section using Vue 2, Vuex, Jest, and Vuetify for the frontend. Designed and implemented RESTful APIs for integrating with third-party services using Node.js, MySQL, NestJS, and Prisma.

Full Stack Engineer

FactoryFix
April 2023 - October 2023

Full Stack developer implementing new features to the in-house SaaS and modifying already made components to improve the Pro Search Section: we use Vue2, Vuex, Jest, Vuetify for the front end. Designed and implemented RESTful APIs for integrating with third-party services: we use Node.js, MySQL, NestJS and Prisma.

Lead Full Stack

JP Global Digital
July 2021 - March 2023

Led the development team towards a microservices-oriented architecture using Node.js, MongoDB, SQL Server, Vue, Vuex, JavaScript, Linux, and PM2. Helped set up CI/CD pipelines and selected optimal services for the SaaS project. Consulted on technical decisions with the team and made informed decisions accordingly. Held responsibility and ownership over application state and influenced other teams and products by building new capabilities.

Lead Full Stack

JP Global Digital
July 2021 - March 2023

Leading the Development team towards a microservices-oriented architecture in Node.js, MongoDB, SQL Server, Vue, Vuex, JavaScript, Linux, PM2. Helped set up our CI/CD Pipelines and choose the best available services for our SaaS project. Consulted on technical decisions with his team and made decisions accordingly. Responsibility and ownership over our application state. Influenced other teams and products by building new capabilities.

Senior Back End Developer

MFTech
June 2020 - July 2021

Worked as a backend developer with AWS Lambdas (Node.js/TypeScript) to create RESTful API endpoints for projects. Utilized DynamoDB and RDS (PostgreSQL) for databases.

Senior Back End Developer

MFTech
June 2020 - July 2021

Back End developer working with AWS Lambdas: Node.js (TypeScript) to create RESTful API endpoints for our projects. For databases we use DynamoDB and RDS (PostgreSQL).

Software Developer / Technology

JP Global Digital
January 2019 - June 2020

Served as a full stack developer on existing projects using technologies like C#, JavaScript, jQuery, and SQL Server. Implemented new technologies in Node.js/AdonisJS for web development and RESTful API creation, and Vue.js/Vuex for new HTML interfaces and interactivity. Proposed and led the switch from a monolithic architecture to a microservices-oriented one with Node.js and the frontend to a Single Page Application (SPA) with Vue and Vuex.

Software Developer / Technology

JP Global Digital
January 2019 - June 2020

Full Stack developer on existing projects done in different technologies like C#, JavaScript, jQuery, SQL Server. Implementing new technologies in Node.js/AdonisJS for web development and RESTful API. Vue.js/Vuex for new HTML interfaces and interactivity. Proposed and led the switch from a monolithic architecture to a microservices-oriented one with Node.js and the Front end to SPA with Vue, Vuex.

Full Stack Freelancer

Outsourcing
December 2017 - July 2019

Offered services and expertise for freelance and outsourcing projects and contracts. Specialized in LAMP Full Stack as well as Node.js, AngularJS, Vue.js, and AdonisJS for web development and RESTful API creation. Developed cross-platform applications using Titanium Appcelerator and Xamarin Studio for efficient delivery, while customizing Swift for iOS and Java for Android when necessary. Provided Joomla and WordPress development beyond theme customization, including WooCommerce integrations, custom post types, and advanced system configurations.

Full Stack Freelancer

Outsourcing
December 2017 - July 2019

I decided to offer my services and expertise as freelance and outsourcing projects and contracts: Specialized in LAMP Full Stack as well as Node.js, AngularJS, Vue.js, and AdonisJS for web development and RESTful API creation. Developed cross-platform applications using Titanium Appcelerator and Xamarin Studio for efficient delivery, while customizing Swift for iOS and Java for Android when necessary. Provided Joomla and WordPress development beyond theme customization, including WooCommerce integrations, custom post types, and advanced system configurations.

Senior Lead Developer

Neuraly Labs
April 2017 - November 2017

Managed and led development teams in creating and enhancing mobile and web projects, including custom implementations and WordPress sites. Oversaw project management and team coordination, ensuring seamless integration of WooCommerce, Custom Types, and Yoast SEO plugins to optimize functionality and performance.

Senior Lead Developer

Nueraly Labs
April 2017 - November 2017

Managed and led development teams in creating and enhancing mobile and web projects, including custom implementations and WordPress sites. Oversaw project management and team coordination, ensuring seamless integration of WooCommerce, Custom Types, and Yoast SEO plugins to optimize functionality and performance.

Senior IT Developer

Televida Mobile Group
April 2014 - March 2017

Hired on contract to create a new web admin to deliver VAS content to mobile operators in Central America. Subsequently hired to lead UI implementations for projects such as Web Design/Development, Facebook Apps, and Mobile Apps. Led all visual deliverable tasks for projects to internal and external customers under the CTO's guidance.

Senior IT Developer

Televida Mobile Group
April 2014 - March 2017

I was hired on a contract to create a new Web admin to deliver VAS content to mobile operators in Central America. I got hired after they saw my work and what I delivered to them. So, they asked me to lead the UI implementations for projects such as Web Design/Development, Facebook Apps and Mobile Apps. Led all the visual deliverable tasks for our projects to internal and external customers under our CTO guidance.

IT Manager

MoviLot Panamá
April 2013 - April 2014

Helped improve hardware and software infrastructure, managing third-party providers for networking, hosting, email, backups, and servers. Created all social media channels and the official corporate website. Led project implementations with third-party partners and managed mobile and web applications.

IT Manager

MoviLot Panamá
April 2013 - April 2014

Helped and improved the hardware and software infrastructure, managed third-party providers such as Networking, Hosting, email, backups, and servers. Created all the social media channels and official corporate Website. Led project implementations with third-party partners. Led Mobile and Web Applications.

Web and Mobile Developer - Outsourcing

Corporacion Medcom
September 2012 - April 2013

Mobile application development by outsourcing: Telemetro for iPad and 2014 Vote for iPhone, iPad and Android. Web services written in PHP with SLIM framework and SQL. Creation for the different mobile projects with Apache Cordova, Titanium App development and IONIC.

Web and Mobile Developer

Corporacion Medcom
September 2012 - April 2013

Developed mobile applications via outsourcing, including Telemetro for iPad and 2014 Vote for iPhone, iPad, and Android. Wrote web services in PHP with the SLIM framework and SQL. Created various mobile projects using Apache Cordova, Titanium Appcelerator, and IONIC.

Web Developer

Degusta Panama
May 2011 - September 2012

Developed dynamic web projects for expanding into new media platforms, ensuring cross-browser compatibility and responsiveness. Created applications for LG SmartTV and BlackBerry Degusta, utilizing the latest industry standards for seamless user experiences. Implemented backend solutions with PHP and MySQL, optimizing database performance and ensuring data integrity. Utilized Apache Cordova to develop hybrid mobile applications, bridging the gap between web and native app functionalities.

Web Developer

Degusta Panama
May 2011 - September 2012

Developing dynamic web projects for expanding into new media platforms, ensuring cross-browser compatibility and responsiveness. Creating applications for LG SmartTV and BlackBerry Degusta, utilizing the latest industry standards for seamless user experiences. Implementing Back-end solutions with PHP and MySQL, optimizing database performance and ensuring data integrity. Utilizing Apache Cordova to develop hybrid mobile applications, bridging the gap between web and native app functionalities.

Chief Lead Web Developer & Manager

América Interactiva / El Diario de Hoy
February 2004 - May 2011

Led and managed a web and development team of 5 members, driving the team towards excellence. Oversaw daily website tasks, ensuring seamless operations and consistent user experiences. Managed the development and implementation of new projects from inception to completion. Conducted research, coding, and implementation of effective solutions to meet business needs. Spearheaded the optimization of a website with over 1.5 million monthly users since 2004, leading to significant improvements in performance and user engagement. Addressed Netscape/Internet Explorer compatibility issues, ensuring cross-browser functionality, and developed and designed websites, providing innovative and user-centric designs.

Chief Lead Web Developer & Manager

América Interactiva / El Diario de Hoy
February 2004 - May 2011

Led and managed a talented Web & Development team of 5 members, driving the team towards excellence. Oversaw daily website tasks, ensuring seamless operations and consistent user experiences. Managed the development and implementation of new projects, from inception to completion. Conducted research, coding, and implementation of effective solutions to meet business needs. Spearheaded the optimization of a website with over 1.5 million monthly users since 2004, leading to significant improvements in performance and user engagement. Addressed Netscape/Internet Explorer compatibility issues, ensuring cross-browser functionality and developed and designed websites, providing innovative and user-centric designs.

Web Programmer

Centre Marie-Anne Gaboury d'Edmonton
July 2001 - November 2003

Developed Intranet and Extranet websites using Microsoft technologies such as ASP and SQL Server. Created websites with HTML, JavaScript, and CSS, ensuring high-quality, user-friendly interfaces compatible with Netscape and Explorer. Worked on projects for Canadian-French organizations based in Alberta, delivering customized solutions tailored to their specific needs.

Web Programmer

Centre Marie-Anne Gaboury d'Edmonton
July 2001 - November 2003

Developed Intranet and Extranet websites using Microsoft technologies such as ASP and SQL Server. Created websites with HTML, JavaScript, and CSS, ensuring high-quality, user-friendly interfaces: Had to be compatible with Netscape and Explorer. Worked on projects for Canadian-French organizations based in Alberta, delivering customized solutions tailored to their specific needs.

Smart Scores

Communication
90
Role Fit
100
Adaptability
90
Problem-solving
80

Smart Skills

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