// Data Engineer

Balazs Arva

Building reliable pipelines and cloud data warehouses – with a growing pull toward full-stack engineering.

Email meLinkedInSkillsExperienceProjects

hello@balazsarva.com · linkedin.com/in/balazs-arva-61351248 · balazsarva.com · Budapest, Hungary

About

I am a dedicated data engineer currently seeking a data engineer role. Over the last couple of years I have strengthened my discipline, adaptability, and problem-solving skills, while staying excited about building reliable data systems through real-world projects and collaboration.

Skills

  • Git/GitHub
  • PostgreSQL
  • Python
  • API/Webhooks
  • React
  • DWH/DM
  • ETL/ELT
  • Azure
  • Linux
  • AI Agents
  • LLM
  • RAG

Projects

SpendPilotspendpilot.cloudLive cloud cost-optimization SaaS. Next.js frontend, Python/Flask backend on Azure PostgreSQL, Clerk auth, Stripe subscriptions, deployed on Azure Container Apps.StackPilotstackpilot.sitePersonal AI assistant in Hungarian and English. Next.js, TypeScript, Vercel AI SDK with Claude/OpenAI models, Clerk auth, Stripe payments, Resend emails.Demo Safenewhome-brown-phi.vercel.appBilingual business website for an alarm and camera installer, with a quote-request flow. Next.js, React, Tailwind CSS, deployed on Vercel.

Experience

  1. 2026 – Present

    Independent Developer

    Building and shipping my own web products end to end – SpendPilot, StackPilot and client sites – from data model and backend to auth, payments and deployment, using AI-assisted development.

  2. 2025 – 2026

    EPAM Academy – Data Engineering Training

    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.

    Hands-on with AWS: EC2, S3, Glue/Glue Catalog, Athena, Aurora, Redshift, and Bastion Host access. Automated ETL/ELT pipelines and built reporting in Power BI, with Python for scripting and data processing.

    Version-controlled all work with Git, and used CI/CD pipelines (Jenkins) alongside Databricks for pipeline orchestration and testing.

  3. 2023 – 2025

    Full-time Student

    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.

  4. 2019 – 2023

    Self-employed

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

  5. 2014 – 2017

    Sales Manager – CNW Rendszerintegrációs Zrt.

    Managed IT hardware and software sales for existing partners, building client relationships and negotiating contracts.

Education

  1. 2001 – 2007

    MSc in Business and Management – Budapest University of Technology and Economics

    Specialization: Regional and Urban Development.