Balazs Arva - Data Engineer Portfolio

Balazs Arva

Data Engineer

Building reliable data pipelines and warehouses, with a growing pull toward full-stack.

Projects

Showcasing impactful projects and technical achievements.

SpendPilot
SpendPilot

Cost Optimizer SaaS.

Web Dev
Full Stack
UI/UX
StackPilot
StackPilot

Interview and exam preparation application.

Web Dev
Full Stack
UI/UX
Beat-Mix
Beat-Mix

Browser-based audio app for playing and mixing drum beats.

Web Dev
Frontend

Experience

Professional journey and career.

EPAM Systems

EPAM Academy – Data Engineering Training

EPAM SystemsBudapest, EU
2025 - 2026

Focused on PostgreSQL (DDL/DML/DCL/TCL) and advanced warehouse design, building a DWH project on the Inmon approach (3NF core + data marts). Covered indexing, VACUUM, MVCC, isolation levels, and stored procedures.

PythonPostgreSQL+4 more

Full-time Student

Self-employedBudapest, EU
2023 - 2025

Studied Python development, software engineering, and data science full-time, while working as a courier – building time management, reliability, and problem-solving skills alongside it.

Python

Self-employed

Self-employedBudapest, EU
2019 - 2023

Developed strong organizational skills, resilience, and the ability to adapt quickly to changing situations.

Skills

Key skills that define my professional identity.

Git/GitHub

Tracking code history with version control and pull request workflows.

Python

Write scripts and data pipelines compliant with coding standards.

PostgreSQL

Design and manage robust relational databases (DWH) using Inmon's methodology.

REST API

Design and consume HTTP APIs for reliable communication between services.

Power BI/DAX

Turn raw data into interactive dashboards and reports using DAX calculations.

AI Integration

Integrate LLMs and AI services into applications and data workflows.