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Achievement: QuickdrawAchievement: Pull SharkAchievement: Arctic Code Vault Contributor

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MariaVlahova/README.md

Hi, I'm Maria — Backend, Data & ML Engineer

I build production-grade APIs, data pipelines, and AI systems for businesses.

If you're looking for someone who can own a project end-to-end — architecture → development → deployment — I can help.
Most of my freelance clients come to me when they need a reliable developer who understands both backend engineering and machine learning, and can deliver clean, scalable, production-ready systems.

🔧 What I Help Clients Build

Backend & API Development

  • FastAPI, Django, DRF
  • Authentication systems (JWT, OAuth2, SSO)
  • High-performance REST APIs
  • Microservices, async processing

Data Engineering

  • Spark + Kafka streaming/batch pipelines
  • Parquet/Delta Lake workflows
  • Distributed processing, data quality, schema evolution
  • Kubernetes, Docker, S3

Machine Learning / AI

  • End-to-end ML pipelines (training → inference)
  • Computer vision, classification, recommendations
  • FastAPI ML serving, monitoring, automation

I focus on building systems that are stable, maintainable, and ready for real users — not quick prototypes that fall apart.

🚀 Highlight Projects (What Clients Usually Look At)

AI Presentation Analyzer

Deep-learning system that analyzes slide decks and generates recommendations.
Skills: TensorFlow, Python, FastAPI, Docker

Authentication Server

Centralized JWT + OAuth2 identity provider with 36+ documented endpoints.
Skills: Django, DRF, PostgreSQL, Docker

Django + FastAPI Hybrid Backend

Unified CMS + API platform for a production website.
Skills: Wagtail, Django, FastAPI, Uvicorn

Kafka → Spark → Parquet Pipeline

Schema-aware ingestion pipeline with batch/stream processing.
Skills: Spark, Kafka, Kubernetes, Hive Metastore

➡️ Pinned repositories include code, architecture, and examples.

🧭 My Company

I also co-run Codea, where we build end-to-end software solutions for clients — from backend infrastructure to AI-powered systems.

🌐 Website: https://codea.bg

📬 Work With Me

I take on freelance projects involving:

  • Backend/API development
  • ML engineering
  • Data pipelines
  • System architecture
  • Automation tools

➤ Open to short-term contracts, long-term consulting, or full project delivery.

📫 Contact

Let’s build something solid and scalable.

Pinned Loading

  1. databricks-kafka-pipeline databricks-kafka-pipeline Public

    End-to-end streaming pipeline with Kafka ingestion, automatic schema inference, and Bronze-Silver-Gold Delta layers. Supports continuous or batch runs via a flexible orchestrator. Modular, Git-frie…

    Python

  2. text-image-coherence-dataset-generator text-image-coherence-dataset-generator Public

    Generates datasets of presentation slides and their accompanying text. Each image–text pair is evaluated for coherence, with a label indicating whether the slide and text match (true) or not (false…

    Python 1

  3. UrbanHazardDetector UrbanHazardDetector Public

    A Python tool for detecting buildings, amenities, and sports infrastructures located near/on natural hazard

    Python

  4. codea-website codea-website Public

    This repository contains Codea Blog, a production-grade hybrid content platform that merges Django + Wagtail CMS with FastAPI into a single unified ASGI application. It serves as a case study demon…

  5. ai_presentation_analyzer ai_presentation_analyzer Public

    Analyzes presentation quality, style coherence, and provides personalized recommendations using three deep learning modules. Integrates all components through a unified PostgreSQL database with a m…

    Jupyter Notebook

  6. codea-auth-server codea-auth-server Public

    Production-ready Django REST Framework authentication server case study. Features JWT auth, Google OAuth, OAuth 2.0 provider, role-based access control, encrypted token storage, rate limiting, heal…