Hi, I'm Sebastian

Backend Developer & AI Integration Specialist

Experienced Python Developer specializing in backend systems, AI integration, and scalable web solutions. Currently exploring the frontend universe with React and Next.js.

Sebastian's OC Character

About Me

Get to know me better

I currently work at Smarttie as a Python developer using Django. I'm also studying a DevOps course with certification from IBM. My journey in tech started at 8, exploring the internet and hacking, and led me to complete a degree in software engineering.

With over 3 years of experience in backend development, I specialize in creating scalable solutions and integrating AI technologies. Currently expanding my skills in frontend development with React and Next.js.

Born: September 2, 2001
Colima, México
Spanish, English (B1)
Music, Universe, Games
Education

Software Engineering

University of Colima • Jun 2024

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Professional Experience

My journey in the tech industry

Backend Developer
Company: Smarttie | Full-time
Oct 2023 - Present

Full-time

Architect and lead developer for a custom Retrieval-Augmented Generation (RAG) system and backend services.

Key Achievements

  • Designed RAG architecture with semantic search using pgvector
  • Built message processing with Celery and Redis for AI assistants
  • Implemented Azure Functions for serverless invoice processing
  • Migrated legacy SQL to SQLAlchemy + Alembic with versioning
  • Developed REST APIs for auth, notifications and Azure integrations

Technologies Used

Python
Django
DRF
Celery
Redis
pgvector
SQLAlchemy
Alembic
Azure Functions
Docker
Next.js
Full-Stack Developer
Company: Betterseat (Remote) | Contract
Mar 2024 - May 2025

Contract

Re-engineered UX for flight seat reservation platform, improving onboarding and dashboards; implemented preference algorithms and tests.

Key Achievements

  • Redesigned landing, onboarding and dashboard flows
  • Implemented user seat preference algorithms
  • Added end-to-end tests

Technologies Used

Django
Tailwind CSS
Playwright
PostgreSQL
Docker
AI Training Specialist
Company: Outlier (Remote) | Contract
Dec 2023 - Apr 2025

Contract

Trained and refined AI models through real coding challenges and prompt engineering; ensured correctness of AI-generated code.

Key Achievements

  • Designed complex prompts to improve code generation
  • Debugged and fixed functional issues in AI outputs

Technologies Used

Python
TypeScript
Prompt Engineering
Flutter Developer
Company: Freeway Company | Full-time
May 2022 - Jul 2023

Full-time

Developed Flutter apps with reusable widgets; integrated PDF generation with Python and GraphQL services.

Key Achievements

  • Built reusable UI components for consistent UX
  • Integrated Python/GraphQL PDF generators

Technologies Used

Flutter
Dart
GraphQL
Python

Skills & Technologies

Technologies I work with

Python
Django
FastAPI
Flask
PHP
Laravel

Certifications

EnglishScore Core Skills (CEFR B1)

British Council

Nov 2023

DevOps Professional

IBM via Coursera

Jun 2024

Cloud Computing Specialist

IBM via Coursera

Jul 2024

Agile Development and Scrum Practitioner

IBM via Coursera

Jul 2024

Featured Projects

Here are some of my recent projects showcasing my skills in backend development, AI integration, and full-stack solutions.

Lumi
WhatsApp AI-powered customer support automation using Meta and GPT APIs for e-commerce clients.
Python
Django
OpenAI
Meta API
Celery
Redis
DRF
Docker
Azure Platform
Flight Booking Platform
Revamped UX for Betterseat's flight booking platform with intelligent seat selection algorithms.
Django
Tailwind CSS
Playwright
PostgresSQL
Docker
ProxyProvider
Linux
MacOS
Personal Portfolio v1
Portfolio website built with HTML, Javascript and CSS
JavaScript
HTML
CSS
Linux
Portfolio v2 (This site)
Modern portfolio website built with Next.js 15, featuring space theme and smooth animations.
Next.js
TypeScript
Tailwind CSS
Framer Motion
Flutter E-commerce App
A cross-platform mobile app designed to optimize cargo transportation by efficiently managing truck and freight vehicle capacity. Key features include: PDF Generation – Create invoices, reports, and shipping documents on the go. Attendance & Load Tracking (CRUD Operations) – Monitor cargo vehicles to maximize trip efficiency by filling unused space. Dual-App Integration: Carrier and Client apps.
Flutter
GraphQL
Ruby on rails
Crochet Business Management App
Crochet biz app: Tracks finances & material use. Optimizes costs & inventory for amigurumi makers. Simple tool for handmade businesses.
Flutter
Isardb package
flutter_secure_storage
RFID and NFC
Sweet Chores
A lightweight TO-DO app with Google Auth and cloud sync, built for seamless task management.
Flutter
Firebase
Google Auth
Google Drive API
Google Cloud Storage
Monopoly Banker App
Practice Flutter app for NFC to read Monopoly bank cards; educational and non-commercial.
Flutter
NFC
Android
Android Studio
C++

Let's Connect

I'm always interested in new opportunities and collaborations. Feel free to reach out!

Get in Touch
Let's discuss your next project

Email

contact@sebastianfrausto.com

Location

Colima, México

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