Iago is available for hire
Hire IagoIago Pimenta
Verified Expert in Engineering
Full-stack Developer
Belo Horizonte - State of Minas Gerais, Brazil
Toptal member since November 22, 2022
Bio
lago is a problem-solver with 10 years of experience working with Rubi on Rails and React applications. He uses agile methodologies such as Scrum to build applications in different environments, including microservices, message-based and monolithic architectures, RESTful APIs, and GraphQL APIs. With extensive experience, lago follows the best practices of the community to make scalable, tested, safe, and fast applications.
Portfolio
RxVantage
TypeScript, React, Hasura, Vue, Ruby on Rails (RoR), Ruby, RSpec, GraphQL...
M4U (acquired by Bemobi)
React, Ruby, Ruby on Rails (RoR), RSpec, TypeScript, Microservices, PostgreSQL...
ProfitPay
Ruby, Ruby on Rails (RoR), RSpec, Sidekiq, Heroku, PostgreSQL, Monitoring...
Experience
- JavaScript - 10 years
- Test-driven Development (TDD) - 8 years
- Ruby on Rails (RoR) - 8 years
- Ruby - 8 years
- Agile - 6 years
- React - 3 years
- TypeScript - 2 years
Availability
Part-time
Preferred Environment
MacOS, Linux, Git, Terminal
The most amazing...
...project I've developed is a drag-and-drop editor for email marketing, improving email delivery speed by 50%.
Work Experience
Senior Software Engineer
2022 - 2022
RxVantage
- Maintained and improved a client and internal portal application and mobile applications.
- Built a new newsfeed portal using micro-front-end architecture.
- Improved user search experience through the elastic search.
- Added new GraphQL endpoints to Ruby on Rails (RoR) and Hasura.
- Migrated Vue.js legacy applications to React and monitored changes.
- Improved RoR query performance and maintenance using the Sequel gem.
Technologies: TypeScript, React, Hasura, Vue, Ruby on Rails (RoR), Ruby, RSpec, GraphQL, Monorepos, PostgreSQL, Jest, Redux, Urql, Storybook, Datadog, Material UI, Amazon Web Services (AWS), ESLint, RuboCop, Webpack
Senior Software Engineer
2020 - 2022
M4U (acquired by Bemobi)
- Maintained and improved the client portal React application.
- Refactored and upgraded the continuous integration code of our main repository and created a gem to make it available for other projects.
- Built an application to generate conciliation reports from customers with partners.
- Conducted research and development for libraries and methods to improve our codebase.
- Supported and mentored junior and mid-level developers from various backgrounds.
- Improved maintainability and safety of React applications with TypeScript, Redux Toolkit, and styled-components.
- Provisioned AWS resources using HashiCorp tools, such as Terraform and Nomad.
- Reduced the continuous integration time of React and RoR applications.
Technologies: React, Ruby, Ruby on Rails (RoR), RSpec, TypeScript, Microservices, PostgreSQL, Jest, Cypress, Redux, Redux-Saga, Storybook, Elasticsearch, Amazon Web Services (AWS), Data Lakes, New Relic, Docker, Bitbucket, Terraform, Nomad, Sidekiq, ESLint, RuboCop, Redis, CircleCI
Senior Software Engineer
2018 - 2020
ProfitPay
- Upgraded RoR applications to their latest version.
- Migrated monolithic applications to microservices.
- Built the app's architecture and the design system of new microservices.
- Created a new workflow application to manage merchants' contracts with banks and digital signatures of documents.
- Built a new onboarding application for merchants and customers.
- Contributed to fixing issues of JSON requests using RoR.
- Managed a small developer team of up to four members.
Technologies: Ruby, Ruby on Rails (RoR), RSpec, Sidekiq, Heroku, PostgreSQL, Monitoring, Cypress, Elasticsearch, RuboCop, Sass, Redis
Full-stack Engineer
2017 - 2018
Kiskadi
- Upgraded RoR applications to their latest version.
- Contributed to open source dependencies to make them compatible with early RoR versions.
- Enhanced lead segmentation and management for SMS campaigns.
- Improved the scale and performance to deliver SMS to hundreds of thousands of users daily.
Technologies: JavaScript, Ruby, Ruby on Rails (RoR), RSpec, Sidekiq, MySQL, Heroku, Sass
Full-stack Engineer
2014 - 2017
RD Station
- Contributed to open source dependencies to improve application functionalities, such as email address validation and email content optimization.
- Reduced a delivered email content size by 60%, speeding up a delivery time.
- Built and documented public APIs for partner integrations.
- Created an interactive WYSIWYG HTML email editor similar to Mailchimp with drag-and-drop functionality for users and segmentation tools to manage leads and monitor delivery metrics.
- Added a white label capability to customers and partners.
- Enabled customers to create A/B tests and automation campaigns.
- Maintained and improved the client's AngularJS application.
- Upgraded features to help merchants manage their leads.
Technologies: AngularJS, Ruby, Ruby on Rails (RoR), Sidekiq, Nokogiri, Amazon Web Services (AWS), MongoDB, Docker, Vagrant
Intern Software Developer
2012 - 2014
Movida
- Maintained multiple live websites using Symphony CMS, including hand coding in XHTML, CSS, JavaScript, jQuery, and PHP.
- Developed numerous custom components for Symphony CMS using XSLT and jQuery.
- Created and managed email marketing campaigns with thousands of deliveries by month.
- Converted mockups provided by graphic designers to fully functional websites.
- Built HTML email templates to be used on Mailchimp from Adobe Photoshop templates.
- Ensured that development was cross-browser compatible.
Technologies: JavaScript, PHP, XSLT, Symphony, MySQL, jQuery, WordPress
Experience
Development of an Email Editor
https://www.rdstation.com/en/marketing/An AngularJS application for managing email marketing campaigns.
I was the full-stack developer creating a new interactive WYSIWYG HTML email editor similar to Mailchimp with drag-and-drop functionality for users and improved lead segmentation capabilities. I also enhanced A/B testing and automation campaigns where each user's interaction triggers some action on the platform. For example, when a user clicks on an email campaign's Read more section, the platform sends an offer email after three days.
I was the full-stack developer creating a new interactive WYSIWYG HTML email editor similar to Mailchimp with drag-and-drop functionality for users and improved lead segmentation capabilities. I also enhanced A/B testing and automation campaigns where each user's interaction triggers some action on the platform. For example, when a user clicks on an email campaign's Read more section, the platform sends an offer email after three days.
Top-up Application for a Large Telecom
https://www.tim.com.br/para-voce/recarga/recarga-expressI was the principal full-stack engineer, participated in the migration to React, and improved application maintainability by adding TypeScript support, styled-components, and Redux. We had a Node.js BFF communicating with Ruby on Rails services and used RabbitMQ for microservices communication.
Application for Life Science
https://www.rxvantage.com/A React-based app for health care providers shares content with doctors and nurses.
I was the full-stack engineer, developed the new section, and integrated it with the back end. Also, I improved the internal dashboards to manage the clients.
I was the full-stack engineer, developed the new section, and integrated it with the back end. Also, I improved the internal dashboards to manage the clients.
Education
2014 - 2017
Bachelor's Degree in Information Systems
Cotemig - Belo Horizonte, Brazil
Skills
Libraries/APIs
React, jQuery, Sidekiq, Nokogiri, Redux-Saga, Vue, Urql, Ruby on Rails API, Node.js
Tools
RubyMine, Vagrant, RSpec, RuboCop, Bitbucket, Terraform, CircleCI, Webpack, Ace Editor, Git, Terminal, RabbitMQ
Languages
JavaScript, Ruby, TypeScript, PHP, XSLT, Sass, GraphQL
Frameworks
Ruby on Rails (RoR), AngularJS, Cypress, Jest, Redux, Material UI
Paradigms
Agile, Test-driven Development (TDD), Management, Microservices, REST, Microservices Architecture, Event-driven Architecture
Platforms
MacOS, Linux, Mobile, WordPress, Docker, Heroku, New Relic, Amazon Web Services (AWS)
Storage
Databases, MySQL, MongoDB, PostgreSQL, Elasticsearch, Redis, Data Lakes, Hasura, Datadog
Other
Algorithms, Engineering, User Interface (UI), User Experience (UX), Networking, Symphony, Monitoring, Storybook, Nomad, ESLint, Monorepos
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