• Developed over 70+ AWS Lambda functions using Node.js and Python, triggered by HTTP requests and DynamoDB streams• Created CI/CD workflows for deploying a Next.js app on pull request merges (Docker + GitHub Actions) and running tests (GitHub Actions)• Built scalable payment flow to accept 35+ payment methods and a “Save payment method” feature for user convenience both using Stripe• Improved Core Web Vitals to achieve a 95-100% score on a Next.js app hosted outside Vercel• Implemented multi-language support with a location-based language selector• Integrated Microsoft Azure AI Translator for dynamic search translations• Developed complete authentication flow using AWS Cognito (sign up, sign in, Google login, account recovery, etc.)• Created advanced animations using Framer Motion• Prevented API abuse by implementing a CSRF token mechanism• Designed NoSQL Single Table Database on DynamoDB to reduce costs and improve performance• Implemented product filtering (price, color, category), infinite pagination, and page selector pagination• Configured and synced 3 environments for frontend, backend, and cloud resources• Built custom checkout page for direct app payments without external redirects• Created responsive email templates and automated email sending for order updates using AWS SES.• Implemented internationalized metadata and automatic sitemap generation• Managed cloud infrastructure using Serverless Framework and AWS SDK for DynamoDB, Cognito, Secrets Manager, and SES• Developed CRUD operations on Algolia indexes, PostgreSQL databases and DynamoDB tables

Adapted Meta's Segment Anything demo in order to create a full software product for image segmentation and shape delimitation around crops, where I:•Gained the skill to quickly adapt open source projects in order to create proprietary and enterprise grade software.•Gained skills related to geometry and linear algebra applied to software development: Created 2 dimensional shapes (points, lines, polygons, added nodes to a polygon, removed nodes from a polygon, selected and moved one or more polygon nodes simultaneously, translated whole polygons)•Learned about OpenCV for JavaScript in React.js applications: Found contours around shapes, approximated a contour shape to another shape with less number of vertices depending upon the precision we specify, converted OpenCV contours to polygons as node arrays, converted polygons as node arrays to OpenCV contours, understood the whole contour hierarchy obtained in order to remove the contours that are not wanted on the imageWorked in other projects were I have put to practice the following:•Importing and exporting project files in order to save the current state of the project and don't lose work•Importing other kind of files to a project in order to extract data and automate processes (COCO formats, KML formats, GeoJSON, etc.)•Interacting deeply with the user's file system in order to obtain all of the files / folders of a known directory without having the user to interact with an HTML file input.•Implemented components that let you filter, sort and load multiple images at the same time on the screen and interact with them.•Created integration tests, hooks tests and snapshot testing using Jest and React Testing LibraryWorked in the development of the flights application, where I have to implement:•Filtering, sorting and pagination for the entries of multiple tables using Tan Stack Table•CRUD operations related to those tables using Tan Stack Query (Formerly React Query) for request handling

•Built complex components from scratch (Dynamic bar charts, dial knobs, audio sliders, etc.)•Adapt both individual third party components and libraries for client side app use.•Documented components properly using Storybook.•Multimedia asset storage and integration, preloading, caching and handling•Converted old class based components into new functional components using hooks.•Used the best industry practices in order to avoid using state management libraries.•m3u8 audio handling, playing, pausing, changing playback speed, going backwards and forwards, created fully functional audio slider.•Created schemas for DynamoDB•Created multiple complex CRUD operations for DynamoDB in node.js code.•Implemented and managed user authentication and authorization using AWS Cognito.•Gained some CDK and CloudFormation knowledge.•Created backend endpoints with the best express.js practices.•Validated JWT tokens for every endpoint / route that requires it. Created backend private routes.

• Built Macros and Visual Basic Scripts to automate multiple processes that takes place inside multiple Excel Workbooks• Built simple UI components inside Workbooks that triggers macros• Offered consulting about relational databases• Designed database schemas