Denis Ibanez

Senior Frontend Developer | VueJS & ReactJS

Salary / Daily rate

Lisbon, Portugal

Freelance, open to permanent contract

Skills

VueReactTypescriptFrontend Development

Languages

English

About me

Intro

Frontend Tech Lead with 8+ years developing scalable web applications using Vue, React, and Angular. Led teams to 30% efficiency gains at companies like Bentley Systems and Ageas Seguros, specializing in hexagonal architecture and Design Systems. Expert in modern frameworks (Vue 3, React 18, Next.js) delivering high-performance solutions for enterprise clients.

Links

Work experience

Senior Frontend Developer

Aubay PortugalFreelance

Mar 2025 - Present

1 year 8 months

Portugal · Remote

Senior Frontend Developer

NoatumFreelance

Sep 2024 - Mar 2025

7 months

Barcelona, Spain

Developed a logistics application utilizing hexagonal architecture to optimize transportation for major clients, including Banco Santander and FC Barcelona. Implemented key features using Vue 3, TypeScript, and custom Design System components, enhancing user experience and performance. Collaborated on code management and testing using GitHub Packages, npm, and Vitest, ensuring high-quality deliverables.

Tech Lead Frontend

Bentley Systems

Apr 2024 - Oct 2024

7 months

Netherlands · Remote

Led the frontend development for maintenance areas in clean energy equipment, ensuring high code quality and efficient team management. Defined architecture and best practices using technologies like Vue 3, React 18, and Typescript, resulting in streamlined development processes. Managed technical backlog and executed one-on-one sessions, effectively implementing and monitoring new versions of applications.

Tech Lead Frontend

Ageas SegurosFreelance

May 2023 - May 2024

1 year 1 month

Lisboa, Portugal · Remote

Led the development of frontend technologies for a sophisticated internal and external product portal, enhancing user experience and functionality. Managed a team of frontend developers, focusing on code quality, technical evolution, and recruitment, resulting in a 30% increase in team efficiency. Oversaw architecture design and implementation using React 18, Next.js, and Vue 3, while maintaining a well-organized technical backlog and successfully deploying multiple new releases.

Engineer Frontend

Pricefy by SelbettiFreelance

May 2022 - May 2023

1 year 1 month

São Paulo, State of São Paulo, Brazil

Frontend Lead

TEMPO ASSISTFreelance

Aug 2021 - May 2022

10 months

Alphaville, Barueri · Remote

Led the development of the Frontend area, utilizing modern technologies such as Vue 3 and React 18 to implement user-friendly portals and dashboards. Oversaw code quality control and team management, successfully reducing technical roadblocks by 30% while enhancing team skills through regular feedback and mentorship. Designed a comprehensive Design System using GitHub Packages and npm, streamlining processes and documentation for internal and external product areas.

Engineer Frontend

DockFreelance

Sep 2020 - Aug 2021

1 year

São Paulo, State of São Paulo, Brazil

Developed and maintained dynamic front-end applications for banking transactions using Vue.js, Angular, and React, enhancing user experience and increasing transaction efficiency by 30%. Collaborated with cross-functional Scrum teams, utilizing Git and CI/CD practices to streamline code deployment, achieving a 20% reduction in release cycles. Implemented Design System components and managed package versions through GitHub and npm, ensuring consistency across applications while improving development speed.

Engineer Frontend

KoviFreelance

Oct 2019 - Oct 2020

1 year 1 month

São Paulo, State of São Paulo, Brazil

Developed and maintained front-end applications for user registration, purchase, and management using Vue.js 2, improving user engagement by 30%. Collaborated in a Scrum environment to enhance team efficiency, utilizing tools like ClubHouse and Git for version control. Implemented CI/CD pipelines and optimized GraphQL API consumption, reducing deployment times by 25%.

Engineer Frontend

CieloFreelance

Dec 2017 - Oct 2019

1 year 11 months

Alphaville, Barueri · Hybrid

Developed and maintained user-friendly front-end applications using Vue.js, HTML5, and CSS3, enhancing user experience and increasing application efficiency by 20%. Collaborated within an Agile team, employing Scrum methodologies to deliver high-quality software updates and features on time. Integrated and consumed GraphQL APIs while implementing CI/CD pipelines for streamlined deployment, improving release frequency by 30%.

Engineer Frontend

CoreBizFreelance

Jan 2017 - Dec 2017

1 year

Alphaville, Barueri · On-site

Developed and maintained high-performance e-commerce applications using Vue.js, Angular, and Vtex for clients including Boticário and TelhaNorte. Collaborated in an agile Scrum environment to implement responsive designs and optimize user experience, improving site load times by up to 30%. Utilized Core Standard Frontend technologies (HTML5, CSS3, Sass) and tools like Webpack and Git to streamline the development workflow and enhance code quality.

Part-Time Frontend Engineer

Microsoft | Isobar

Jan 2016 - Dec 2016

1 year

Alphaville, Barueri · On-site

Developed and optimized the Rio Olympics 2016 website, ensuring seamless user experience and functionality under tight deadlines. Collaborated with cross-functional teams to create scalable applications using Angular and modern web technologies including HTML5, CSS3, and JavaScript. Utilized version control tools like Git and Bitbucket to streamline project workflows and enhance team collaboration.

Grupo Abril

Jan 2012 - Dec 2016

5 years

São Paulo, State of São Paulo, Brazil

Mid-Level Frontend Developer

Jan 2015 - Dec 2016

2 years

São Paulo, State of São Paulo, Brazil

Developed and maintained responsive web applications using HTML5, CSS3, and JavaScript, enhancing user experience for the CASACOR brand. Contributed to the migration of applications from an in-house CMS to WordPress, optimizing site performance and functionality. Collaborated with cross-functional teams to create innovative web solutions, utilizing Bootstrap and PHP for dynamic content delivery.

Junior Frontend Developer

Jan 2012 - Jan 2015

3 years 1 month

São Paulo, State of São Paulo, Brazil

Developed and maintained a custom CMS application, transitioning it to WordPress to enhance scalability and user experience. Collaborated with the CASACOR team to create responsive web designs using HTML5, CSS3, and Bootstrap, successfully improving site performance by 30%. Implemented dynamic features with PHP, JavaScript, and jQuery, contributing to an increase in user engagement.

Writer

Luva Editora

Jan 2015 - Jan 2015

1 month

Brasil · Remote

Since my childhood, I have always had a passion for stories, especially those full of fantasy and fiction. In 2015, I brought my first book to life through America Starbooks in the USA. The following year, I participated in the 2016 Biennale, also launching myself on the national scene. Since then, there have been five books released, two crowdfunding campaigns and many readers who have become true friends on this incredible journey.

Level 2 Support Analyst

Bradesco

May 2007 - Jan 2012

4 years 9 months

São Paulo, State of São Paulo, Brazil

Provided Level 2 technical support to over 100 users daily, resolving complex issues related to software and hardware. Collaborated with cross-functional teams to enhance service efficiency, reducing average resolution time by 25%. Conducted training sessions for users, improving their technical proficiency and reducing repeat support requests by 15%.

Telemarketing operator

Csu BR

Jun 2005 - Dec 2006

1 year 7 months

Alphaville, Barueri · On-site

Conducted over 100 outbound calls daily to potential customers, achieving a 20% conversion rate. Managed customer inquiries and provided solutions, improving customer satisfaction scores by 15%. Trained and mentored 5 new team members, enhancing team performance and productivity by 10%. Collaborated with the sales team to achieve quarterly revenue targets, contributing to a 25% increase in sales. Utilized CRM software to efficiently track and update customer interactions, reducing call handling time by 30%.


Education

Universidade Paulista

Bachelor of Technology - BTech

2010 - 2012

2 years 1 month

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