Renato Crivano
Verified Expert in Engineering
Full-stack Developer
Petrópolis, Brazil
Toptal member since July 11, 2022
Renato is an experienced full-stack open-source developer and team leader who has worked as an entrepreneur and a CTO for 15+ years. With a master's in computer engineering, he specializes in web and mobile applications, microservices, databases, and Google Cloud solutions and is keen on using Java, JBoss, JavaScript, Vue, and Flutter. Renato is passionate about clean and optimized code automatically deployed to cloud infrastructure and app stores.
Portfolio
Experience
- Oracle - 15 years
- Java - 15 years
- Google Cloud - 8 years
- Google App Engine - 8 years
- JavaScript - 8 years
- MySQL - 4 years
- Vue - 4 years
- Flutter - 2 years
Preferred Environment
Java, JavaScript, Vue, Nuxt.js, Oracle, MySQL, Google Cloud, Google App Engine, Flutter
The most amazing...
...solution I've developed is a document management system built in Java and used by 400+ thousand people to produce 150+ thousand documents daily.
Work Experience
Owner | Software Developer
Mobisign
- Created a mobile-first digital signature application.
- Implemented the ICP-Brasil standard for signatures and the possibility of doing a signature with the mouse or finger.
- Handled the development in Google Cloud with Cloud Storage, Datastore, REST API, Java, and Vue.
Owner | Software Developer
XRP
- Developed a cloud application for digital document production and management using Java, Angular, Bootstrap, and Google tools, including App Engine, Datastore, Cloud Storage, Tasks, and Search API.
- Created a library for automatic UX generation controlled by Java annotations applied to the model.
- Managed all other company aspects, such as marketing and sales.
Public Agent | Software Developer
Regional Federal Court of the 2nd Region
- Worked as the main developer of Siga-Doc, an open source project that is one of the largest systems for digital document management in Brazil, handling all digital documents in the State of São Paulo and the City of Rio de Janeiro, among others.
- Developed Assijus, an open source solution for digital signatures that uses Angular, Java, BlueCrystal, and Redis. I also created a Flutter app for signing using digital certificates on Android and iOS.
- Implemented the BalcãoJus, an open source web interface in Java and Vue to consult judicial processes and perform various operations in the regional federal court's processual systems.
- Created Siga-WF, a complete workflow solution that integrates with Siga-Doc and other Siga modules.
Owner | CTO | Software Developer
Cybertech Software
- Developed customized applications for several market segments such as shopping center administration and construction and insurance companies.
- Managed team members and interacted with many clients.
- Defined the architecture, prototyped, and presented every software built to the clients.
Owner | Founder | CTO | Software Developer
Hands Mobile Experience
- Developed mobile apps, mobile sites, and web services in C and .NET.
- Coordinated all the IT initiatives of the company.
- Coded an award-winning browser in C and Lua for PalmOS and SymbianOS.
Experience
Siga-Doc
https://github.com/projeto-siga/sigaSiga-Doc is a scale and well-optimized application running in hundreds of server instances. The State of São Paulo reported that in 2021, the system produced eight million digital documents, amounting to more than 37 million pages, saving $1 million and 1,881 trees.
Mobisign
XRP.com.br
http://xrp.com.brJFlow
https://github.com/crivano/jflowEducation
Master's Degree in Computer Engineering
Federal University of Rio de Janeiro, COPPE - Rio de Janeiro, Brazil
Bachelor's Degree in Computer Science
Federal University of Rio de Janeiro - Rio de Janeiro, RJ, Brazil
Partially Completed Bachelor's Degree in Physics
Pontifical Catholic University of Rio de Janeiro - Rio de Janeiro, Brazil
Skills
Libraries/APIs
Vue
Languages
Java, JavaScript, C, C++, Lua
Platforms
Google App Engine, Oracle
Storage
Databases, Google Cloud, MySQL, Google Cloud Datastore
Frameworks
Hibernate, Nuxt.js, Flutter, .NET, Angular
Other
Data Mining, Information Retrieval, Physics, Mathematics, Cloud Tasks, APIs, Cloud
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring