César A.

Worked at a startup developing a system to manage IoT devices for controlling water consumption and storage.

• Developed event-driven microservices to process IoT devices data.

• Implemented device inventory and customer catalog features to optimize management.

• Integrated the Home Assistant platform to ensure seamless device connectivity and functionality.

• Implemented a robust notification system.

• Implemented reporting tools to improve user experience and data analysis.

• Implemented tests (unit, integration, automation).

Project: Fixed Assets - Client: Bloomberg Industry Group

Worked with an international team developing a financial Saas used to manage fixed assets and calculate depreciation, so companies can maximize tax savings.

• Improved the existing backend architecture, which increased overall performance by 38%.

• Developed backend REST APIs using C# and .NET.

• Developed serverless application using AWS Lambda and Athena.

• Built front-end application using React and Typescript.

• Implemented tests (unit, integration, automation). The unit test coverage was increased from 11% to 75%.

• Created CI/CD pipelines in GitLab.

• Monitored system events using Grafana.

• Performed task decomposition, estimation, and bug fixing.

• Mentored junior developers.

• Performed code review.

• Leveraged GitHub Copilot to accelerate code generation, refactoring, debugging, and the creation of technical documentation.

Technologies: C#, .NET, React, Typescript, Redux, Tailwind, AWS (S3, Lambda, Athena, API Gateway), Jest, Vitest, Playwright, Grafana, Amplitude, Flatfile, GitLab CI/CD, Git, GitHub Copilot, Figma.

Project: Cumulus - Client: Sherweb Worked developing a cloud marketplace system for enterprise solutions and Web hosting.

• Developed event-driven microservices using .NET, SQL Server and Azure.

• Migrated legacy .NET Framework projects to .NET Core, which increased overall performance by 32%.

• Built front-end application using Angular and Typescript.

• Implemented Python migration scripts.

• Fixed security code vulnerabilities using Snyk.

• Monitored system events using Datadog.

• Implemented unit and integration tests.

• Created CI pipelines in Azure DevOps.

• Performed task decomposition, estimation, and bug fixing.

• Performed code review.

Technologies: C#, .NET Core, .NET Framework, Angular, Typescript, Bootstrap, Python, SQL Server, Docker, Microsoft Azure, Azure DevOps, Git, Datadog, Microservices, Clean Architecture, Domain-Driven Design

Worked at Quimbik as a Software Engineer for eleven and a half years, developing more than 20 projects using different technologies. The company's clients included American startups and major market players such as Nasdaq, Amazon, Oracle, Aramark, and Symantec.

Some relevant projects:

• Nasdaq Boardvantage - A system to help directors, committees, and leadership teams be better prepared, engaged, and aligned in their collaboration and decision-making processes. Leading technologies used: Swift, SwiftUI, Objective-C, UIKit, Java Spring Boot, Docker, Postgres, and React.
• Fitli - iOS application for fitness marketplace. My activities included: iOS development
• Artkive - iOS application to chronologically store, share and print your child's artwork or schoolwork. My activities included: iOS development
• Filmakr - iOS application for making cinematic iPhone films. My activities included: iOS development
• Photomenus - iOS application for food and catering delivery service. My activities included: iOS development using Swift and UIKit, backend development
• Amazon Employees Shares Website - An internal system allowing employees to buy and sell shares. My activities included: Full stack development
• SeatBoost - iOS application for bid live auctions for a seat upgrade. My activities included: Backend development
• Aramark Shop Site - E-commerce for Aramark Corporation. My activities included: Backend development
• DriversEd Online Courses - Online driver's ed courses for exam preparation. Fullstack Development

• Worked as a Fullstack Developer, designing and developing the SP6S System from scratch.
• The SP6S is a system for storing, organizing, and publishing statistical research.
• The latest SP6S version provides many features, such as custom UI and charts, flexible user access permissions, cross-data analysis, historical time series, advanced filters, reports, custom variables, document repository, data import and export (Excel and PDF), and integration with Microsoft PowerBI.
• Conducted code reviews.

Safedocs has developed a simple, secure, and cost-effective online solution that is revolutionizing the US notary market.

• Worked as Software Engineer developing a PDF digital signatures system

• I've worked as Software Engineer for Department of Electrical Engineering developing an Uninterruptible Power Supply management system, using C++.

• Developed a workflow management system that helps organizations model and automate their business processes using Microsoft .NET technology, including Windows Forms, WPF, ASP.NET, and Visual Basic.
• Developed an electronic document management system with rapid document retrieval using full-text search, aimed at minimizing the amount of paperwork in organizations, using Visual Basic, ASP, C++, and COM technology.
• Developed several e-gov web applications for state and federal governments.
• Designed and developed an object-oriented database management system using C++.