Alejandro – React, React Native, Python

Internal platform to power the home loans offering of zillow

• build AI agents and AI-powered workflows
• architect resilient flows with step functions
• implemented event driven systems with SQS and Kafka
• integrated monitoring and observability in our services
• developed features in our fronted projects for our internal tools
• built internal golang libraries

An app that take the burden of coming up with meals, searching recipes, or planning how to use your pantry, offering you personalized recipes recommendations.

Import all your saved recipes from Youtube / TikTok / Instagram

• Build the mobile app for iOS with react native
• Deploy the infrastructure on AWS using IaC
• Implement AI RAG workflows to search and generate recipes
• Developed AI powered workflows to process images, videos and text to extract ingredients and recipes
• Developed the backend system with focus on managing async AI workflows

NannyML is an open-source python library that allows you to estimate post-deployment model performance (without access to targets), detect data drift, and intelligently link data drift alerts back to changes in model performance.

NannyML Cloud is the product that allow data scientist to monitor without the hassle, enable enhanced security controls, and access additional features.

• create frontend architecture from scratch
• assist backend architecture design
• deploy custom ML algorithms to AWS Sage Maker

An Android and iOS mobile app for investing in the US stock markets. Its mission is to empower LATAM to create a better financial future. The second product is an investment account with a Broker Dealer. To open an investment account, users must provide personal and financial information and upload photos to verify their identity. The big challenge was to reduce the friction generated by the many questions required.

• Managed tasks for a team of 3-5 people
• Developed a dynamic form with several screens and input types to gather the required information for the account opening
• Collaborated with business experts to write the technical documentation to get a Financial license from the Mexican government required to operate in Mexico
• Improved the completion rate of investment account opening of the clients from 20% to 40% by implementing A/B tests.
• Built a back-office application using internal APIs and retooling. This reduced the resolution of customer success tickets from a couple of days to a couple of minutes
• Reduced the customer success tickets by 80%, restructuring the opening account flow to provide instant feedback to clients when something was wrong
• Built a data pipeline using Fivetran, Redshift, and Metabase to build analytics dashboards to track KPIs. This helped him and his stakeholders to make decisions based on data

A platform that integrates with companies to grant financial services to their employees. It has a mobile app that grants access to salary on-demand in Mexico, available 24/7 in an instant.

• Developed the mobile app from scratch and launch it on the Play store and App store. It has over 100,000 downloads
• Defined the frontend architecture to integrate a Vue application inside capacitor.js and access native functionalities
• Developed an internal system to send emails and push notifications to internal cohorts
• Developed a back-end service to integrate multiple payment providers
• Developed a service to handle one-off and multiple recurrent payments to settle the user's debt
• Developed a service to allow individual users to opt-in to the platform and a process for companies to approve each user. This allowed the onboarding of over 10,000 new users
• Developed an internal system to create user cohorts based on business rules and user info

The company turns unused office space into a network of dedicated workspaces on a monthly subscription. It offers a marketplace where teams can find workspaces that fit their needs, and owners can earn money sharing their space with those teams.

• Created the first implementation of the marketplace
• Integrated Gmaps API to provide maps features with a custom style
• Used SSR to optimize the SEO of the marketplace
• Integrated internal endpoints to adapt a legacy API
• Built internal messaging tools for the customer support team

An Android and iOS mobile app for investing in the US stock markets. Its mission is to empower LATAM to create a better financial future.

• Developed the mobile app from scratch and launched it on the Play store and App store; it now has over 50,000 downloads
• Designed back-end architecture using a mono repo with multiple Python services
• Built CI/CD pipelines with Jenkins for the back-end services and the mobile application using expo EAS
• Built the infrastructure using pulumi as IaC. This allowed the team to have different environments and create new services in a couple of lines of code

An agency that focuses on solving problems by embracing technology. This is a digital assets exchange platform.

• Developed the front-end architecture with Vue components and Vuex
• Collaborated on the planning of the back-end architecture with Golang microservices
• Developed real-time charts using WebSockets and d3.js, like Bar, Line, Candle, and Depth charts
• Developed a real-time portfolio interface using WebSockets
• Developed a light and dark mode using CSS variables
• Developed a design system showcase using Storybook