
Gabriel Siedler
Verified Expert in Engineering
Software Developer
Florianópolis - State of Santa Catarina, Brazil
Toptal member since October 5, 2016
Gabriel develops UI-rich applications that delight users. With over 10 years of full-stack experience, he creates reliable and easy-to-maintain systems and writes high-quality clean code with top-notch technologies. Gabriel also focuses on modern technologies such as React Redux, React Native, TypeScript, GraphQL, Node.js, Docker, PostgreSQL, and NoSQL databases.
Portfolio
Experience
- Web - 12 years
- JavaScript - 8 years
- Responsive - 5 years
- CSS3 - 4 years
- HTML5 - 4 years
- Node.js - 4 years
- React - 3 years
- MongoDB - 3 years
Availability
Preferred Environment
Visual Studio Code (VS Code), MacOS
The most amazing...
...app I've built manages a store's inventory using sensors on shelves—alarming the manager with the exact number of items needed and where to add them.
Work Experience
Front-end Specialist
Freelance
- Built an app from the ground up to manage embedded analysis runs and visualize its results, which contain biomolecular information.
- Engineered sophisticated components and application states, facilitating the dynamic visualization and manipulation of DNA chains and traces.
- Developed the application's front end as the sole developer, collaborating seamlessly with a team of four back-end developers.
- Engaged actively with the scrum master, product owner, and team members, contributing to the successful fulfillment of intricate project requirements through effective communication and collaboration.
Content Creator
Toptal, LLC
- Innovated and developed new technical challenges to enhance the effectiveness of the screening process for prospective candidates.
- Conducted thorough reviews of front-end documentation, significantly improving recruiter awareness and ensuring precise matching of developers to engagements.
- Spearheaded various internal projects at Toptal, contributing to the overall efficiency and success of the team.
Developer Screener
Toptal, LLC
- Conducted screening interviews to evaluate candidates' skills, ensuring a rigorous selection process for entry into Toptal's esteemed developer team.
- Coordinated daily interviews efficiently with developers worldwide, fostering a diverse and dynamic talent pool.
- Contributed actively to weekly meetings to enhance and refine the overall screening and hiring process.
- Designed and implemented algorithmic challenges and tasks to evaluate candidates' programming skills effectively, ensuring a comprehensive assessment aligned with Toptal's standards.
Full-stack Engineer
Eran Balter
- Developed an app based on an existing codebase using React, TypeScript, and Redux. Created the server-side part from scratch using Socket.IO and PostgreSQL.
- Transformed a regular app into a multiplayer service with real-time interaction.
- Accomplished MVP requests before the deadline, allowing me to add more features.
- Created very complex features inside an existing codebase.
Senior Full-stack Developer
AE Studio
- Worked for great clients like Samsung for more than four years.
- Contributed to at least 15 projects—most of them with the JavaScript stack.
- Architected projects and managed developers on several projects.
Full-stack Developer
Shirt App (via AE Studio)
- Joined the team to help solve bugs due to the app's enormous complexity.
- Assisted in building the ionic logic that enabled editing HTML shapes on the fly.
- Helped manage the back-end state to replicate the front-end design, building the final art and shipping it to the selling platform.
Front-end Developer
DVN (via AE Studio)
- Created the front end from scratch using React, Redux, and the styled-components library.
- Followed Zeplin files to create the new pages and adapted them to Bootstrap for a fully responsive website.
- Collaborated with a back-end developer to accomplish tasks.
Full-stack Developer
Exceleri
- Enhanced code reliability by organizing and refactoring a significant amount of back-end code.
- Created complex workflows in React Redux, which were the application's core.
- Improved the UI/UX dramatically using themes and bundles.
- Corrected plenty of bugs in the entire application.
Full-stack Developer
Digital Dojo
- Played a pivotal role in orchestrating and managing the entire project, ensuring smooth coordination and successful execution.
- Designed and implemented intricate features innovatively using React/Redux, contributing to the project's growth and functionality.
- Addressed and resolved bugs proactively, demonstrating a keen eye for detail and a commitment to delivering a polished, error-free final product.
Full-stack Developer
SimsUshare
- Initiated and developed the entire project from inception, showcasing the ability to conceptualize and execute projects from the ground up.
- Established API and Socket.IO server components, ensuring seamless communication and robust back-end functionality.
- Crafted an intuitive and responsive front end using React/Redux, enhancing the overall user experience with modern and efficient design practices.
Front-end Developer
Enjoy
- Developed standalone components using React, contributing to the modular and scalable architecture of the application.
- Implemented new features within the admin platform, enhancing its capabilities and user functionality.
- Demonstrated proficiency in troubleshooting and resolving front-end bugs, ensuring a smooth and error-free user experience.
Full-stack Web Developer
Marmon
- Contributed to developing an analytics app focused on managing store shelf items, enhancing its functionality and user interface.
- Elevated the UI/UX by introducing a new theme—ensuring full responsiveness, down to 320 pixels, and providing enhanced user feedback.
- Conducted comprehensive code refactoring, incorporating linters with distinct JavaScript versions for the back and front ends, modularizing code, transitioning to Sass, and optimizing folder structure for improved organization.
- Expanded browser compatibility by adding support for older versions, ensuring a broader reach and accessibility for users.
- Integrated the application seamlessly with a data science report service, enhancing its analytical capabilities.
- Implemented a robust authentication layer, fortifying the app's security measures and ensuring a safer user experience.
Full-stack Developer
Bloomz
- Addressed and resolved platform-wide bugs, ensuring the overall stability and reliability of the system.
- Collaborated in developing standalone React components, contributing to a more modular and maintainable codebase.
- Implemented comprehensive unit tests for the back end, enhancing code quality and facilitating a more robust and reliable system.
Full-stack Developer
Yazabi Predictive, Inc.
- Completed assigned tasks successfully, ensuring the timely execution of outgoing deliverables.
- Enhanced the project's overall reliability and performance by systematically identifying and resolving bugs.
- Prepared the project for release, ensuring it met quality standards and was ready for deployment.
Front-end Developer
Modsy
- Collaborated in developing intricate React components, contributing to the project's sophistication and functionality.
- Translated design concepts from PSD to HTML, ensuring pixel-perfect and responsive implementations.
- Enhanced overall stability and user experience by systematically addressing and resolving platform-wide bugs.
Full-stack Web Developer
Blueshift
- Developed a soccer statistics app for a local client, showcasing proficiency in creating tailored solutions.
- Coordinated and led front- and back-end colleagues effectively—ensuring seamless collaboration and project synergy.
- Engineered the core company manager using the Kohana PHP framework, demonstrating expertise in building robust and scalable web applications.
Full-stack Web Developer
Bravi
- Contributed to developing one of the world's biggest educational systems, EBS.
- Created apps for clients like Qualcomm and Tribal.
- Led the Brazilian team's technical operations for local clients.
Full-stack Web Developer | Partner
Dauphin
- Identified prospective customers and negotiated based on the project's complexity.
- Managed contacts and sales directly with customers.
- Developed several projects for local customers and small companies.
- Designed a database using schema tools and implemented it using MySQL.
Experience
My Personal Website
AE Studio Website
https://ae.studio/Draper Venture Network
Gallant Pet
https://gallant.com/Education
Bachelor's Degree in Computer Science
Federal University of Pelotas - Pelotas, Rio Grande do Sul, Brazil
Skills
Libraries/APIs
React Redux, Node.js, React, jQuery, Backbone.js, Socket.IO, MobX, API Development, REST APIs, Stripe API, D3.js
Tools
GitLab, GitHub, Jenkins, Adobe Fireworks, Subversion (SVN), Git, Canvas
Languages
JavaScript, HTML, CSS, TypeScript, Sass, CSS3, HTML5, PHP, Python, GraphQL, SCSS, SQL, ES5, C, C++
Paradigms
Responsive, Agile Software Development, Unit Testing, REST, Mobile Development
Platforms
Web, Windows, Linux, Visual Studio Code (VS Code), MacOS, Oracle, Heroku, Docker, Shopify, Android, iOS, Mobile
Frameworks
React Native, Redux, Express.js, AngularJS, Bootstrap, Ionic 3, Angular, CodeIgniter, Kohana, Ionic, Next.js, JSON Web Tokens (JWT), Jest, Electron
Storage
MySQL, MongoDB, PostgreSQL, Microsoft SQL Server, NoSQL
Other
Styled-components, User Experience (UX), Full-stack, Full-stack Development, Startups, Product Development, APIs, Web Development, Website Performance, Front-end, Back-end, React Hooks, Machine Learning, Video Compression, Algorithms, Visx, Axios, Minimum Viable Product (MVP), Technical Leadership, Front-end Development, Back-end Development
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