Diego Armando Zambrana Arze
Verified Expert in Engineering
Full-stack Developer
Cochabamba, Cochabamba Department, Bolivia
Toptal member since September 20, 2022
Diego is a full-stack developer and data engineer with several years of experience in software development and data-based products. His strongest technical skills include React, Django, and Python, along with robust work habits, including code cleansing, application of best practices, an eye for a good UI/UX, database model creation, and automatic test implementation. Diego has worked for startups and larger corporate teams using agile methods like Scrum or Kanban.
Portfolio
Experience
- Python - 6 years
- React - 5 years
- Django - 4 years
- TypeScript - 2 years
- Supabase - 1 year
- Vercel - 1 year
- Next.js - 1 year
- FastAPI - 1 year
Preferred Environment
MacOS, React, TypeScript, Django, Python, REST, GraphQL, Communication
The most amazing...
...project I've done is lead a code migration project for one of the top streaming TV cable platforms based in the US.
Work Experience
Full-stack Developer
Tilde Research, Inc.
- Designed the database schema and core architecture from scratch based on Next.js, Supabase, and Shadcn UI, translating the hiring workflow (contacts, pipeline stages, approvals) into a production-ready system.
- Integrated the Cal.com API to manage and track interview scheduling directly within the platform.
- Integrated Slack's API to deliver real-time notifications and enable interactive callback actions for recruiters.
- Integrated the Claude API to help draft and refine candidate-facing emails before approval.
- Accelerated development using Claude Code and Cursor, setting up project conventions, rules, and skills to apply AI-assisted coding best practices throughout the build.
Senior Full-stack Engineer
Catalogo CC
- Designed and built the Catalog CC platform from scratch, translating a raw business idea into a production-ready online catalog using Next.js, Supabase, TailwindCSS, and Shadcn UI.
- Integrated Supabase for authentication, database, and storage, ensuring secure data access, role-based permissions, and reliable back-end operations.
- Led the UI/UX implementation using Shadcn, TailwindCSS, and UXPilot, delivering a clean, consistent, and conversion-focused user experience aligned with the product vision.
- Accelerated development velocity by leveraging AI-assisted tools such as Cursor, ChatGPT, and Claude to generate, refactor, and validate production-quality code.
Full-stack/State Management Expert
Talent Pull, Inc.
- Updated various AI-generated views in a Next.js application.
- Fixed and integrated API endpoints using Next.js API routes.
- Improved the front-end architecture by refactoring large files into smaller, reusable components.
Full-stack Engineer
Nixtla
- Created new features with the dashboard for users that help handle their Secret Keys and accounts.
- Migrated an admin app from Nuxt.js to a new project based on React, TypeScript, and Shadcn.
- Created monitors that measure the time response of their different services.
- Created an ETL to enrich user information from Apollo API to an analytics table.
Experienced Full-stack Engineer
BuildVision AI LLC
- Created new features related to a takeoff editor for the floor plan.
- Fine-tuned to an AI Vision to classify symbols produced in a detection AI model for floor plans.
- Led a small team of developers and created tickets that described the steps required to implement new features.
- Set up the configuration in AWS, Render, Vercel, and Cloudflare to deploy the back-end and front-end projects.
Full-stack Developer (via Toptal)
VanNoppen Marketing, LLC
- Modified different websites with Wagtail and Django.
- Improved Wagtail page models to make them more customizable.
- Migrated the models from different sites and avoided losing data.
Front-end Developer
Small Chip Investments
- Created authentication and registration process of users on Next.js.
- Created UI for sign-in and sign-up routes on Next.js.
- Implemented models to manage users with Next.js and MongoDB.
- Created Python scripts to upload user members to the Access Development platform to provide deals to users from the app using a 3rd-party library.
- Created a pipeline for scraping hotel logos from different official pages, stored them in S3, and updated them in the MongoDB collection.
Data Engineer
code.bo
- Created a script for scraping data from different real estate websites.
- Developed ETL to extract data from different websites, handle the necessary data, and store it as a CSV file in a data lake.
- Set up AWS services like Lambda, CloudWatch, S3, and DynamoDB.
Full-stack Developer
V.P. BOOKKEEPERS LTD.
- Created a front-end app from scratch using React, Axios, and Redux.
- Built a back-end service with Django and Django REST framework.
- Set up the entire site on AWS using EC2, load balancer, S3, CloudFront, and Route53.
- Integrated a JWT authentication service, created necessary API endpoints in the back end, and controlled the token expiration in the React app.
- Integrated Stripe API to add payment methods and make payments.
Web Developer
NeutraTech Inc
- Designed and developed a new user interface (UI) using React, TypeScript, Axios, Redux, and React Router technologies, and successfully integrated it into their new website.
- Developed a new back-end service using Django, Django REST framework, and JWT authentication to enhance the company's web application capabilities.
- Devised a custom library to establish connectivity between the company's proprietary product and a third-party library, enhancing product performance and functionality.
Full-stack Developer
Zoetis - Main
- Created and updated API endpoints for the client's back-end service with Python and Django.
- Built tasks on the data engineering pipeline to load data from a different marketing service.
- Participated in the development of the database schema for a new marketing engine project.
- Created and updated different Python notebook scripts with Azure Databricks.
Senior Front-end Engineer
Academy Code
- Structured the front end using React, Axios, Redux, React Router, ESLint, and Prettier.
- Composed integration and unit tests with Jest and Enzyme.
- Added an admin Bootstrap template and migrated it from HTML/CSS to React components.
- Developed new components to control public and private pages.
- Built assessment components that helped students make quizzes.
- Made code training components with IDE to run Python and JavaScript code in the browser.
- Integrated JWT logic into the front end to refresh the tokens when they expire.
Full-stack Developer
Nutriabo
- Created an app with Django and the library Graphene to provide a GraphQL service.
- Added JWT using GraphQL (GraphQL JWT) and integrated JWT logic into the front end to refresh the tokens when they expired.
- Built the database models for various modules, including ailments, diets, and chemical analysis.
- Constructed the front-end structure with React, Apollo, Redux, React-router-dom, ESLint, and Prettier.
- Made the integration and unit tests with Jest and Enzyme.
- Built the custom UI library based on MUI (Material UI) and D3.js for charts.
- Checked the product logic with nutritional personnel for ticket creation.
- Created the necessary project tickets and led meetings to monitor project progress.
Software Engineer
Insticator
- Developed and maintained the front end with React, Redux, and Axios.
- Created report pages with data visualizations for a publisher portal product using chart libraries such as D3.js.
- Fixed bugs in a new environment for QA team reviews.
- Built a micro front end for user profiles and an authentication UI with Preact and Goober.
- Solved the styled issues for the platform's mobile version.
Full-stack Developer
Rukos.tv
- Created the front-end platform from scratch with React, Axios, Redux, and React Player. Added different features to the front-end side and fixed the bugs.
- Designed the mockups for the website with Adobe Photoshop and Figma.
- Created the API service, the database schema, and the email service with Python, Django, and Django REST framework.
- Wrote different scripts to scrape the source videos from different websites with Python, requests, Pyquery, and Beautiful Soup.
Full-stack Developer
SelectTV
- Created new features and fixed bugs on a Django template.
- Spearheaded a refactoring project which included migrating Django templates into a React project.
- Reverse-engineered a Django-based project and documented all the necessary APIs that were applicable to the new React-based project.
- Created Jira tickets for the migration project and assigned them to different team members.
- Migrated different files with class components into function components for the newly refactored React project.
- Rebuilt products which included refactoring, cleaning code, and fixing bugs.
- Composed integration tests and unit tests based on BDD (behavior-driven development) and made feature files to test the different components.
- Led weekly meetings to monitor the migration project's progress.
Full-stack Developer
DeepCast
- Developed components, views, and a function editor that's connected to a service to run code made in Python and show the results.
- Built a syntax and data type validator to avoid issues on forms.
- Created a functional code editor that helps as an analytics calculator.
- Added new components to a custom UI library developed by the company.
- Fixed issues with some Flask-based API endpoints.
Full-stack Developer
Billing By Cloud
- Reverse-engineered migrating code from an old system and documented all the URL views.
- Migrated a Django-based project into a new REST API server using the Django REST framework.
- Created web components for the UI with React, HTML, CSS, and Bootstrap.
- Fixed style issues with different email templates in Django.
- Documented all the necessary API endpoints to move the back-end logic.
Full-stack Developer
Phenx Machine Learning Technologies
- Developed a front-end app using Angular and a back-end server in Django.
- Connected a back end to a Python-based prediction engine.
- Made the data visualization as well as the data management feature and added a function to upload CSV files while making predictions with them.
- Created authentication and register pages and managed the logic to handle the tokens on the front-end side.
- Constructed custom and dynamic tables to show data from uploaded CSV files.
Data Engineer
Pixability
- Created an ETL process in Supervisord, Kafka, and Jenkins to recollect data from different sources.
- Maintained different ETL processes running in Supervisord.
- Performed maintenance of a Tableau server on AWS for the data science team.
- Created scripts in Python for handling data from different platforms.
- Composed SQL queries to help the data science team search for various data types.
Full-stack Developer
Decipher Finance
- Created different API endpoints in the Django REST framework that provided data information to show charts.
- Developed the front-end views with HTML, Less, and AngularJS.
- Implemented the statistical diagrams using the library D3.js.
- Built the email templates with HTML and CSS and integrated them with a Django service.
- Made a commercial landing page that contained various data points and information about the business.
- Added a financial service on the front-end side to manage a virtual wallet.
Front-end Developer
Finance Matters
- Mocked up pages from PSD design files to Django templates using HTML and CSS.
- Added interactive features to the front end with jQuery.
- Composed scripts with Python and Pandas to process CSV files and load data into the application.
- Fixed responsive style issues that arose with mobile devices.
- Made email templates in HTML and CSS on the Django project.
Front-end Developer
Global Exacta
- Developed the front-end side for an internal app to search and filter candidates and control the recruitment process.
- Implemented a commercial site using HTML, CSS, and Angular.
- Created data visualizations from different sections with D3.js.
- Built components that help filter candidates based on different criteria.
- Constructed the commercial landing page and added dynamic features to improve the user experience.
Experience
SelectTV
I worked as a full-stack developer focused more on the front-end side. I coded and led a code migration project from Django and the old version of React into a new React project.
One of the biggest project challenges was learning ultra quickly and on the fly everything about React because my primary background coming into this was Angular. This project also was a great experience in learning about testing on the front-end side.
Pixability
https://www.pixability.comPixabilityOne is a video advertising software platform that powers every campaign managed by Pixability and is also used by agencies and brands as a self-serve platform.
I worked as a data engineer. I learned different technologies related to my role, improved my skill with SQL, and created maintenance ETLs with Kafka, Hadoop, and Supervisord.
Insticator
https://www.insticator.com/I worked as a software engineer, primarily maintaining a range of products with React. I also created a micro front-end app for managing profile user information; this app was in several different company products.
Education
Master's Degree in Data Science
Pontificia Universidad Católica de Chile - Santiago, Chile
Bachelor's Degree in Computer Science
Universidad Mayor de San Simón - Cochabamba, Bolivia
Certifications
FastAPI - The Complete Course 2024 (Beginner + Advanced)
Udemy
Applied Data Science with Python
University of Michigan | via Coursera
Skills
Libraries/APIs
React, Node.js, React Router, REST APIs, Pandas, Vue, jQuery, D3.js, React Redux, Stripe, NumPy, Django ORM, PySpark, React Query, Beautiful Soup, Python API, Stripe API, PostgREST, SQLAlchemy, OpenAI API, FFmpeg, Stripe Connect, Preact, AWS Amplify, SciPy, React DnD, Chart.js, Web3.js, Requests, Pyquery, Google Maps API, PyMongo, Azure Blob Storage API, WhatsApp API, Google Maps, Playwright, Scikit-learn, Matplotlib, OpenCV, Mantine, daisyUI, React Testing Library, RxJS, Recharts, Puppeteer, React Navigation, Claude API, Slack API
Tools
Claude Code, Jira, Git, GitHub, Jupyter, Figma, Plotly, GIS, Web GIS, Pytest, Trello, Slack, Redux Toolkit, Prisma, Mongoose, Auth0, ChatGPT, Shadcn, Google Sheets, Microsoft Excel, Vitest, Amazon Simple Queue Service (SQS), Retool, Claude, Notion, Supervisord, Jenkins, Tableau, Cucumber, JWPlayer, Redux Thunk, Graphene, Webpack, Amazon Cognito, Google Analytics, Babel, React Apollo, Amazon Elastic Container Service (ECS), AWS CloudFormation, Apache Airflow, Zoom, Cron, Amazon Elastic Container Registry (ECR), Amazon CloudFront CDN, Amazon CloudWatch, Celery, Seaborn, BigQuery, Docker Compose, RabbitMQ
Languages
TypeScript, Python, HTML, CSS, JavaScript, Python 3, CSS3, GraphQL, SQL, HTML5, ECMAScript (ES6), Sass, SCSS, Java, Less, Snowflake, Regex
Frameworks
Django, Flask, Redux, Next.js, Tailwind CSS, Bootstrap, Angular, Jest, Material UI, Express.js, Electron, Web Frameworks, Django REST Framework, Scrapy, Vanilla JS, Swagger, Flux, NestJS, React Native, OAuth 2, AngularJS, Spark, Hadoop, Blueprint, JSON Web Tokens (JWT), MUI CSS, Ant Design, Serverless Framework, Ruby on Rails (RoR), Selenium, Cypress, Alembic, Jinja, Nuxt.js, Flutter
Platforms
Amazon Web Services (AWS), Vercel, Web, Apache Kafka, Docker, AWS Lambda, Amazon EC2, Azure, Visual Studio Code (VS Code), Contentful, Databricks, Firebase, Google Cloud Platform (GCP), AWS IoT, Anaconda, Replit, MacOS, Webflow, Linux, AWS Elastic Beanstalk, Meteor, Heroku, Jupyter Notebook, Linode, Drupal, DigitalOcean
Storage
PostgreSQL, Databases, MySQL, Amazon S3 (AWS S3), Redis, JSON, MongoDB, SQLite, Relational Databases, Vertica, Amazon DynamoDB, Redis Cache, NoSQL, Data Pipelines, Elasticsearch, Database Management Systems (DBMS), Microsoft SQL Server, Google Cloud, Redshift, Data Integration
Paradigms
REST, Agile, Scrum, UX Design, UI Design, Unit Testing, ETL, Test-driven Development (TDD), Agile Software Development, Testing, Microservices, Responsive Web Design (RWD), Search Engine Optimization (SEO), Continuous Delivery (CD), Continuous Integration (CI), Code Refactoring, Model Context Protocol (MCP), DevOps, Continuous Deployment, Object-relational Mapping (ORM), Hosting, Automation, Functional Programming, E2E Testing, CSRF Protection, Microfrontends, Real-time Systems
Industry Expertise
Web Design, E-learning, Healthcare, Marketing
Other
Front-end, Full-stack, APIs, Web Scraping, Data Visualization, User Interface (UI), User Experience (UX), Responsive Web Apps, Data Scraping, UI Development, Scraping, Web Development, Front-end Development, Minimum Viable Product (MVP), Full-stack Development, Server-side Rendering (SSR), Supabase, Responsive UI, Web Applications, Programming, Algorithms, Axios, Team Leadership, Computer Science, Data Engineering, Back-end, Machine Learning, Dashboards, API Integration, Architecture, WebSockets, Data Extraction, Back-end Development, Pixel Perfect, Adaptive Design, Dashboard Design, Fintech, Storybook, Charts, Landing Pages, Artificial Intelligence (AI), Front-end Architecture, Web UI, Web UX, Dash, API Design, JavaScript Libraries, WCAG 2, DataFrames, Single-page Applications (SPAs), Web3, Wagtail CMS, Manual QA, Data Modeling, RESTful Services, Integration, Graphic Design, Lambda Functions, Caching, Reports, PDF Scraping, CSV, Videos, Design, Authentication, FastAPI, Bootstrap 5, Visualization, Webhooks, PWA, Payment APIs, CI/CD Pipelines, Monorepos, OpenAI, Front-end Design, Mobile First, Models, Generative Artificial Intelligence (GenAI), Startups, Prompt Engineering, OpenAI GPT-4 API, Natural Language Processing (NLP), Progressive Web Applications (PWAs), Website Data Scraping, Zustand, Vite, Large Language Models (LLMs), User Experience Design, UI Frameworks, UI Libraries, react-window, Visualization Tools, Software, Charting, Responsive Design, Communication, Resend, Software Architecture, Code Review, Education, Educational Portals, Forms, MERN Stack, Education Technology (Edtech), Strapi, Generative Pre-trained Transformers (GPT), Amazon RDS, Headless UI, Open-source LLMs, RESTFul APIs, Tailwind UI, Firebase Cloud Functions, Supabase Auth, Containers, NextAuth.js, Data, AI Integration, Cursor AI, Infrastructure as Code (IaC), GitHub Actions, Stripe Payments, PDF, PDF Conversion, Leaderboards, AI Tools, Bug Fixes, Debugging, Railway, AI-generated Code, Vibe Coding, Error Handling, Multi-tenant SaaS, Payments, Third-party Integration, AI Programming, Anthropic, Messaging, Application State Management, Page Speed Optimization, Image Processing, Interactive JavaScript, Styled-components, Apollo, ESLint, Enzyme, Cloud, Analytics, Lint, SaaS, Leadership, Technical Architecture, Data Cleaning, Data Organization, CRM APIs, Customer Relationship Management (CRM), Back-end Performance, Finance, Content Management Systems (CMS), Serverless, Integration Testing, Data Analysis, Data Science, Blob Storage, Networking, Nivo, Middleware, Sankey, Data Processing, Data Processing Automation, SFTP, Single Sign-on (SSO), Plugins, Animation, Data Analytics, Google Sign-in, Parquet, Healthcare IT, Pipelines, WhatsApp, Chatbots, PayPal, Graphs, Hotspot, Chakra UI, Cloudflare, Drop Shadows, Investing, Investments, Headless CMS, TypeORM, Firebase Hosting, 3D Modeling, AWS Secrets Manager, Anime, eCommerce, CSS-in-JS, EDGAR, DOM, Web Components, Video Streaming, Radix UI, API Gateways, Springbot, Mobile Apps, Computer Vision, Google Cloud Functions, QR Codes, GitHub Copilot Chat, React Hooks, UXPilot, Lovable, Deployment, Static Site Generators, Widgets, Cal.com
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