Alejandro Javier Rebecchi, Developer in Barcelona, Spain
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Alejandro Javier Rebecchi

Verified Expert  in Engineering

Bio

Alejandro is a computer science graduate from Argentina with experience working as a software developer for a variety of companies since 2010, mostly in web-oriented projects. He has worked with and led teams of all sizes. Alejandro has worked on computer vision and image processing university projects.

Portfolio

Ben
Django, Django REST Framework, Python 3, React, GitHub...
Blend Financial Inc
JavaScript, HTML, Chrome Extensions, API Integration, Web Scraping, OpenAI API
Inked Voices
jQuery, JavaScript, Django, Python, Elasticsearch, React, REST APIs...

Experience

  • Django - 9 years
  • Python - 9 years
  • PostgreSQL - 6 years
  • Amazon Web Services (AWS) - 6 years
  • React - 5 years
  • Technical Leadership - 4 years
  • Interviewing - 3 years
  • React Native - 2 years

Availability

Part-time

Preferred Environment

Git, React, Django, Python, PyCharm, Linux

The most amazing...

...project I've worked on was a Python-BigQuery ORM for Google App Engine.

Work Experience

Tech Lead | Senior Back-end Engineer

2021 - PRESENT
Ben
  • Led a team of four developers to implement some core functionality, maintaining high quality and performance while balancing practicality and considering rollover planning.
  • Developed a set of mechanisms to support defining rules dynamically to configure different behaviors for all users on a very granular basis.
  • Implemented an entirely new approach to the core of the product to improve the adaptability to a vast spectrum of scenarios and give the company a huge competitive advantage.
  • Implemented API and SFTP integrations with HR systems such as Personio, Humaans, BambooHR, and HiBob.
Technologies: Django, Django REST Framework, Python 3, React, GitHub, Continuous Integration (CI), Continuous Deployment, AWS Elastic Beanstalk, REST APIs, Mobile Development, Architecture, Data Modeling, OpenAI, ChatGPT, Full-stack Development, Web Development, Integration, Celery, ETL, Data Integration, JSON, ETL Implementation & Design, JavaScript, Front-end Development, Mobile, Mobile Apps, Back-end Development, Software Architecture, Amazon Web Services (AWS), Django ORM, Android, React Native, Hybrid Apps, Mobile App Development, Auth0, Single Sign-on (SSO), Databases, CSS, HTML, Expo, SQLite, Responsive Web Design (RWD), User Interface (UI), Live Chat

Chrome Extension Developer

2024 - 2024
Blend Financial Inc
  • Implemented a Chrome extension to interact with specific websites, triggering automatic actions to automate tasks.
  • Integrated Chrome extensions with APIs handle keys and information securely.
  • Implemented Figma designs supporting multiple pages inside the extension popup to ensure consistency with the company website.
Technologies: JavaScript, HTML, Chrome Extensions, API Integration, Web Scraping, OpenAI API

Lead Full-stack Developer

2017 - 2024
Inked Voices
  • Upgraded a full technology stack and solved issues with deprecated and unmaintained external dependencies.
  • Redesigned and migrated all the infrastructure due to performance issues.
  • Implemented an online PDF annotation tool using jQuery.
  • Maintained the entire website, solving critical preexisting bugs.
  • Documented design, infrastructure, and security mechanisms for the entire website.
  • Implemented a text search feature for users and groups using Elasticsearch.
  • Coordinated the development, design, and infrastructure work.
Technologies: jQuery, JavaScript, Django, Python, Elasticsearch, React, REST APIs, Architecture, Data Modeling, Full-stack Development, Web Development, Integration, HTML, CSS, Celery, OAuth 2, JSON, OAuth, Payment APIs, Front-end Development, Stripe, Stripe API, Back-end Development, Software Architecture, Django ORM, Selenium, Databases, SQLite, Responsive Web Design (RWD), User Interface (UI), Live Chat, Payment Gateways

Tech Lead

2020 - 2021
Sofie (via Toptal)
  • Developed an app with a recommendations algorithm based on the user's choices.
  • Designed and deployed a scalable and cost-efficient serverless architecture to host a website with potential exponential user base growth.
  • Created a Chrome extension that connects and uses authentication and user data from the main website to integrate it with external merchants.
  • Led a team with two other front-end developers and coordinated work with the external team to implement the MVP.
Technologies: Django, Python, JavaScript, Elasticsearch, MySQL, Amazon Web Services (AWS), AWS Elastic Beanstalk, Amazon Route 53, Django REST Framework, React, Amazon CloudFront CDN, Amazon S3 (AWS S3), Amazon RDS, AWS Lambda, Algolia, REST APIs, Web Scraping, Architecture, Data Scraping, Data Modeling, Full-stack Development, Web Development, Integration, Data Integration, JSON, ETL Implementation & Design, ETL, Front-end Development, Serverless, eCommerce, Back-end Development, Software Architecture, Django ORM, Chrome Extensions, Databases, Beautiful Soup, CSS, HTML, SQLite, Responsive Web Design (RWD), User Interface (UI)

Full-stack Engineer

2020 - 2021
Carnegie Mellon University (via Toptal)
  • Implemented a secure Python function evaluator using Python meta-programming tools.
  • Developed a mechanism to install and select libraries in runtime for Python AWS Lambda Functions.
  • Designed and implemented an algorithm to detect possible cheating in test responses.
Technologies: Django, Python, Amazon Web Services (AWS), AWS Lambda, React, Redux, PostgreSQL, REST APIs, Full-stack Development, Web Development, JSON, JavaScript, Front-end Development, Back-end Development, Django ORM, CSS, HTML, SQLite, Responsive Web Design (RWD), User Interface (UI)

Full-stack Engineer

2020 - 2020
Studio DL (via Toptal)
  • Performed a complete refactoring to give the ability to deploy different implementations of the website with the same codebase.
  • Implemented a caching and pre-processing mechanism to optimize loading and updating times for 70,000+ rows that needed to be displayed and updated in real time.
  • Optimized rendering times for 70,000+ dots in a map according to zoom level using spatial clustering.
  • Integrated a templating language to securely allow the user to modify the UI components in runtime.
Technologies: Django, Django REST Framework, REST, Google Cloud, Redis Cache, Google App Engine, Python 3, Leaflet, REST APIs, Full-stack Development, Web Development, Integration, JavaScript, Front-end Development, Back-end Development, Django ORM, Mapbox, Mapbox API, Mapbox SDK, HTML, SQLite, User Interface (UI)

Software Developer

2019 - 2019
Deep13 (via Toptal)
  • Implemented an API to provide information with restricted access.
  • Designed database and API to be compliant with medical application standards.
  • Implemented continuous integration (CI) and automated the deployment process.
Technologies: Google App Engine, Django REST Framework, Django, REST APIs, Web Development, JSON, Back-end Development, Django ORM, SQLite

Software Developer

2019 - 2019
C Stark (via Toptal)
  • Created a web scraping tool to extract relevant content from websites.
  • Integrated with Google Cloud Natural Language API to analyze text.
  • Implemented a dynamic JavaScript file content serving mechanism.
  • Created a simple admin interface to manage the app settings.
Technologies: Google Cloud Natural Language, Google App Engine, Django, Python, REST APIs, Web Development, Integration, Back-end Development, Beautiful Soup, HTML

Software Developer

2019 - 2019
Andres Cufari
  • Created a standalone application to count traffic using a webcam.
  • Implemented an algorithm to identify and track moving objects on a video feed.
  • Implemented an algorithm to classify object images based on shape and size.
  • Optimized computer vision algorithms to run in real-time on Raspberry Pi devices.
  • Packaged Python standalone application into windows installable file.
Technologies: OpenCV, Python 3, Integration, Image Processing, Image Manipulation

Full-stack Web Developer

2019 - 2019
Zoomist (via Toptal)
  • Created a reusable, flexible jQuery entity filtering component that integrates with Django tables to enhance its filtering capabilities.
  • Developed a quick switch for a restricted privileges mode to hand off the devices without risk.
  • Enhanced the checkout process flexibility to support multiple kinds of products and multiple customer reservations in the same order.
  • Created a survey system to attach to the events and reservations, and integrated it into the check-in process.
  • Integrated with Twilio to send text message notifications.
Technologies: JavaScript, jQuery, Django, Python, Full-stack Development, Web Development, Integration, Front-end Development, Back-end Development, Django ORM, CSS, HTML, SQLite, User Interface (UI), Payment Gateways

Back-end Software Engineer

2018 - 2019
Medallia
  • Supported an API to handle reporting configuration.
  • Researched and developed a POC to implement a new strategy for integration testing.
  • Supported an API to provide translations for the elements of the web application.
Technologies: Java, Web Development, Integration, JSON, Back-end Development

Software Engineer

2015 - 2017
Globant (Contractor at Google)
  • Re-designed and maintained ETL pipeline for gamification application.
  • Created BigQuery ORM for Google App Engine with Python.
  • Designed and implemented a data synchronization mechanism between platforms via API.
  • Optimized performance of a critical data filtering mechanism in high-traffic web application.
  • Enhanced building and deployment mechanism for high availability (zero downtime) web application.
Technologies: Python, Java, REST APIs, Architecture, Data Modeling, Full-stack Development, Web Development, Integration, ETL, Data Integration, JSON, ETL Implementation & Design, OAuth, Serverless, Back-end Development, Material UI, Google Maps, Google Maps SDK, Databases, HTML

Web Developer

2013 - 2015
Devartis
  • Created a custom text annotation JavaScript component.
  • Completed a custom music player component and integrated it into a website.
  • Maintained a big data application for customer experience analysis.
  • Supported a high-traffic web platform with multimedia content.
  • Enhanced the privacy and security of a writing social network.
Technologies: Backbone.js, JavaScript, Django, Python, REST APIs, Full-stack Development, Web Development, Integration, JSON, Front-end Development, Stripe, Stripe API, eCommerce, Back-end Development, Django ORM, Selenium, Google Maps, Google Maps SDK, CSS, HTML, SQLite, User Interface (UI), Payment Gateways

Web Developer

2010 - 2013
Aufiero
  • Created a REST API integration with Zoho Client Relationship Manager.
  • Developed API integration with the global AVG licensing platform.
  • Created a PDF invoice generator connected with a tax regulation agency.
  • Built a web administration platform for licensed resellers.
Technologies: CodeIgniter, WordPress, PHP, Grails, Java, REST APIs, Full-stack Development, Web Development, Integration, JavaScript, Front-end Development, eCommerce, Back-end Development, CSS, HTML, User Interface (UI)

Experience

Shake a Sipper | Mobile App

https://shakeasipper.com/
Shake a Sipper is a mobile and web app that lets users discover and share cocktail recipes. It's published for Android in the app store and also available as a web app. It was implemented with React Native and a Django back end.
Recipes and images have been generated and enhanced using generative AI.

Path Detection Resistant to the Presence of Shadows

https://github.com/cheverebe/shadows
A Master's degree thesis with the Department of Robotics of the University of Buenos Aires. I implemented a computer vision algorithm that detects the transitable area of the image using a monocular camera.

Capture Echo | Website Widget to Capture User Feedback

https://captureecho.com/
Capture Echo is a super easy-to-install website widget that lets you add a feedback form to your website in seconds. The widget itself has been developed with Vanilla JavaScript to avoid dependencies with any libraries. The website and dashboard were developed using React, Tailwind, and Django.

Tailor Made News | Personalized AI-generated Newsletter

https://tailormadenews.com/
A B2B platform to generate personalized newsletters about niche topics. It provides companies the ability to stay up to date with the latest news and trends in their domain with minimal effort. It also provides an AI chatbot that can answer questions about the content that was gathered to generate the newsletters.

Education

2015 - 2017

Master's Degree in Computer Science

University of Buenos Aires - Buenos Aires, Argentina

2009 - 2015

Bachelor's Degree in Computer Science

University of Buenos Aires - Buenos Aires, Argentina

Certifications

JANUARY 2016 - PRESENT

Shaping up with Angular.js

CodeSchool.com

Skills

Libraries/APIs

REST APIs, Django ORM, Google Maps, React, OpenCV, Stripe, Stripe API, Google Maps SDK, Mapbox API, Beautiful Soup, Backbone.js, Leaflet, jQuery, OpenAI API, Matplotlib

Tools

BigQuery, Git, Pytest, Expo, PyCharm, NGINX, Amazon CloudFront CDN, GitHub, ChatGPT, Sentry, Celery, Auth0

Languages

JavaScript, Python, Python 2, HTML, Java, Python 3, SQL, CSS, PHP, TypeScript, C

Frameworks

Django, Django REST Framework, React Native, Material UI, Grails, CodeIgniter, Redux, Angular Material, Angular, ASM, Tailwind CSS, OAuth 2, Next.js, Selenium

Paradigms

Object-oriented Programming (OOP), Agile, Agile Workflow, ETL, Responsive Web Design (RWD), REST, Functional Programming, Continuous Integration (CI), Continuous Deployment, Mobile Development, ETL Implementation & Design

Platforms

Mapbox, Google Cloud Platform (GCP), Amazon Web Services (AWS), Google App Engine, Linux, Android, WordPress, AWS Lambda, Docker, AWS Elastic Beanstalk, Windows, Algolia, Vercel, Mobile, Mailgun, Firebase

Storage

Google Cloud, MySQL, PostgreSQL, Data Integration, JSON, SQLite, Redis Cache, Cassandra, Elasticsearch, Amazon S3 (AWS S3), Databases

Other

Google BigQuery, API Integration, APIs, Back-end, Full-stack Development, Web Development, Back-end Development, Computer Vision, Computer Vision Algorithms, Full-stack, Technical Leadership, Interviewing, OpenAI GPT-3 API, Lambda Functions, Web Scraping, Architecture, Data Scraping, Data Modeling, Integration, OAuth, Payment APIs, Front-end Development, Serverless, Mobile Apps, Software Architecture, OpenAI GPT-4 API, Mapbox SDK, Hybrid Apps, Mobile App Development, User Interface (UI), Live Chat, Image Processing, Image Manipulation, Payment Gateways, Google Cloud Natural Language, Computer Science, Amazon Route 53, Amazon RDS, OpenAI, Supabase, Artificial Intelligence (AI), Large Language Models (LLMs), eCommerce, Retrieval-augmented Generation (RAG), AI Agents, Groq, Llama 3, LangChain, Chrome Extensions, Single Sign-on (SSO), Prompt Engineering, FastAPI, Machine Learning

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