Freelancer profile translated to English.

Description

Senior Java Developer with over 17 years of experience in the design and implementation of complex backend systems - from migrating monoliths into modern cloud architectures to building scalable data platforms and ETL pipelines. Used across industries - from fintech through automotive and media to the public sector. I ensure viable architecture that is oriented towards actual business needs. I design systems in such a way that internal teams can maintain and further develop them - clean code, clear structures, understandable documentation. I work according to the contract-first principle, test-driven, and with immutability as a quality principle.

Languages

Bulgarian
Native or bilingual
German
Fluent
English
Fluent

Workplace preferences

Can work on-site

München (up to 50km)

Medien& Online Publishing
Senior Java Developer
PUBLISHING
April 2025 - October 2025 (6 months)
München, Germany
Development of a new version of the company's internal CMS

• Creation of a concept for a warm-hot server based on EKS-Anywhere, enabling technical operations to be independent of political factors
• Reduction of the time to detect faulty configurations through change tracking in a configuration service
• Reduction of latency in a service for managing CMS configurations (JSON) by 20% through the migration from MySQL database to PostgreSQL

Technologies: Java 11-21, Spring Boot 3.3x, Quarkus 3.x, REST API, PostgreSQL, MySQL, Elasticsearch, S3, Liquibase, Hibernate/JPA, Panache, AWS, Docker, Docker Compose, K8s, Gradle, Maven, TestContainers, JUnit 5.0, VCS, SVN, Git, Gitlab CI, Flux CD, Microservices, Modulith, Jira, Confluence
Java Spring Boot Quarkus AWS GraphQL
Wellness
Senior Java Developer
HEALTH AND WELLNESS
October 2024 - October 2024
München, Germany
Development of a batch ETL pipeline

• Increased reach and marketing efficiency through the design and implementation of an ETL pipeline based on Spring Batch and deployment on OpenShift.
• Successful continuous transfer of company leads to Insider's newsletter platform to enable automated marketing campaigns.
Java Spring Boot Spring Batch PostgreSQL OpenShift
Gear Technology Avant-garde UG (gegr. 04.2024)
Chief Technology Officer & Co-founder
MECHANICAL ENGINEERING
April 2022 - Today (4 years and 2 months)
München, Germany
Bootstrapped collaborative SaaS platform for total simulation of drives

• Full technical responsibility for the platform - from the overall architecture and relational database model to the delivery of the MVP, which is currently in the beta phase with initial users.
• Validation of the technical feasibility of a distributed architecture for computationally intensive gear calculations.
• Design of a pay-as-you-go license model and contribution to financial planning as a co-shareholder.

Technologies: Java 17–21, Spring Boot 3.x, Angular2, JNA, REST (OpenAPI), C, C++, Python, Hibernate/JPA, Liquibase, PostgreSQL, Docker, Docker Compose, Gradle, CMake, JUnit 5.0, GitHub Actions, Heroku, Railway, Kanban, ChartJS, Git, Microservices, Modulith
Java Spring Boot C++ C Angular