About Zoltán
Senior backend engineer with 6+ years building scalable Java/Spring Boot systems in enterprise environments - Ericsson (5G infrastructure), ZEISS (cross-platform product), and currently a Hungarian government application at Trium-iTech. I design and own backend services end-to-end, including the cloud infrastructure they run on: Kubernetes, Terraform, Azure, CI/CD.
Currently taking on freelance projects through Gigi Labs - gigilabs.eu
Hungarian
Native or bilingual
English
Fluent
Can work on-site
Budapest (up to 50km)
Experience
- Gigi LabsFounder & Senior Backend EngineerApril 2026 - Today (4 months)Budapest, HungaryFreelance backend engineering and architecture for European clients. Java/Spring Boot, cloud-native systems on Kubernetes/Azure, API design and platform engineering.Available for project-based or embedded contractor engagements.
- Trium-iTech Zrt.Senior Backend EngineerMarch 2025 - Today (1 year and 5 months)Budapest, HungaryBackend developer on a Java/Spring Boot microservice powering the car buy-and-sell module of DÁP, an official Hungarian government application.Designed and implemented 20+ RESTful API endpoints backed by Oracle, managing data persistence with Hibernate/JPA and database migrations with Flyway.After the second backend developer left, I took full ownership of all backend development and reliability. Comprehensive unit and integration test coverage across the entire backend.
- Zeiss Digital Innovation HungarySenior Software EngineerSeptember 2022 - September 2024 (2 years)Budapest, HungarySenior engineer on a cross-platform mobile and web product at ZEISS Digital Innovation. Owned Microsoft Azure infrastructure, provisioned and managed end-to-end with Terraform, and contributed to the team's CI/CD pipeline.Built NodeJS backend services supporting the application, alongside Angular/TypeScript frontend features. Grew into a senior role driving technical and architectural decisions across the stack, including planning sessions and design reviews.
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Education
- Computer Science BScEötvös Loránd Tudományegyetem2020Computer Science BSc