Work Experience
Senior Data Engineer - Neoshare AG (Cloud Native Data Lake House Solution)
Duration: 10 Apr 2025 – Current
Summary:
- Design and build schemas to solve the day-to-day problems of the market and intelligence forecast team
- Designed and built ETL Pipelines, AWS Glue
- Built and deployed a cloud-native Data Lake house solution using Snowflake, implementing CI/CD processes and a data ingestion orchestrator to streamline data workflows
Responsibilities:
- Design and build data schemas for market and intelligence forecasting.
- Build and deploy a cloud-native Data Lake house solution using Snowflake.
- Create and implement GitLab CI/CD processes.
- Create and implement data ingestion processes in collaboration with business stakeholders.
- Create and implement a data ingestion orchestrator.
- Implement schema migration tooling in the delivery process.
Technologies: AWS Glue, Snowflake, GitLab CI/CD, Data Lakehouse, Data ingestion orchestrator
Data Platform Architect - DSK Bank (Retail Banking Data Platform Redesign and ECB Regulatory Reporting Migration)
Duration: 2 Oct 2023 – 7 Apr 2025
Summary:
- Redesign and optimization of retail banking data platforms, including migration of ECB regulatory reporting from on-prem Oracle DWH to Azure Databricks with snapshot and micro-batch data processing
- Implementation of modern data architectures and CI/CD practices in a legacy environment
Responsibilities:
- Deep study and redesign of retail banking data model and analytics platforms.
- Analyze, refactor, and optimize existing business-specific data models.
- Establish business work-related processes for Data Engineering teams.
- Develop, implement, and document data processing information systems.
- Optimize legacy information system infrastructure.
- Research and develop CI/CD philosophy in a non-CI/CD SDLC environment.
- Design architecture and implement CDLH on Azure with Databricks.
- Implement and propagate CDC principles and Lambda/Kappa architectures.
- Re-create ECB regulatory reporting from on-prem Oracle DWH to Azure DBX platform.
- Align cross-team corporate data strategy.
Technologies: Azure, Databricks, Oracle DWH, CDC, Lambda architecture, Kappa architecture, CI/CD
Senior Data Engineer - OpenTag EOOD (Cloud-Based OLAP Platform and Data Streaming Implementation)
Duration: 3 Jan 2022 – 7 Sep 2023 (1 yrs 9 mos)
Summary:
- Development of cloud-based OLAP near real-time platform and OLTP microservices architecture for the sports betting industry
- Migration from on-prem batch processing DWH to modern cloud DWH using streaming data solutions and scalable ETL pipelines
Responsibilities:
- Examine and study sports betting industry data models.
- Implement OLTP microservices architecture and build a cloud-based OLAP near-real-time platform.
- Analyze, redesign, and reintegrate on-prem batch processing DWH to cloud-based DWH using Apache Kafka streaming.
- Design, develop, and implement proprietary scalable ETL pipelines following landing staging data flow philosophy.
- Implement custom data model logic and ETL scheduling with client-specific dependencies.
- Implement Apache Kafka data streaming using CloudSQL and Debezium CDC on Postgres.
- Use Flyway for DWH versioning.
- Implement DBT and Airflow for data transformation and processing of complex datasets.
- Implement custom business data ingestion using Fivetran and AirByte for unstructured data ingestion.
Technologies: Apache Kafka, CloudSQL, Debezium, Postgres, Flyway, DBT, Airflow, Fivetran, AirByte, OLTP microservices, OLAP
Software Developer / MTS 3 - VMware (vCenter Product Data Migration Framework and Zero Downtime Upgrade Features)
Duration: 10 Sep 2018 – 3 Jan 2022
Summary:
- Design, development, integration, and maintenance of a proprietary data migration framework supporting vCenter product upgrades
- Development of zero downtime upgrade features for vSphere product and internal database tools
Responsibilities:
- Design, develop, integrate, and maintain a custom data migration framework for vCenter product upgrades.
- Develop and maintain conceptual, logical, and physical data models of the product.
- Design and develop new features for the vSphere product enabling zero downtime upgrades.
- Design and integrate internal tools such as database health checker and cleanup utilities.
- Provide expertise and support to other product teams on MSSQL, Oracle, DB2, and Postgres platforms.
Technologies: MSSQL, Oracle, DB2, Postgres, Data migration frameworks, vSphere
Oracle Database Developer / Performance and Tuning Expert - CODIX S.A (Database Development and Performance Optimization)
Duration: 10 Nov 2016 – 5 Sep 2018
Summary: Development and optimization of Oracle databases including SQL and PL/SQL code, database tools, and refactoring of SQL applications to improve performance and maintainability.
Responsibilities:
- Database development and design using SQL and PL/SQL.
- Optimize and tune SQL and PL/SQL code for performance.
- Develop database tools to support application needs.
- Analyze, debug, and optimize SQL and PL/SQL queries and packages.
- Design SQL and PL/SQL packages, queries, functions, procedures, and triggers in C and ProC programs.
- Refactor SQL applications for improved performance and maintainability.
Technologies: Oracle, SQL, PL/SQL, C, ProC
Remote Software Support Engineer - IBM
Duration: 11 Aug 2011 – 16 Nov 2015
Projects
11 May 2022 – 13 Feb 2024
Reduced downtime during upgrade of an application hosted in a data center
A method of upgrading an application in a software-defined data center (SDDC) includes:
- deploying, by lifecycle management software executing in the SDDC, a second appliance, a first appliance executing services of the application at a first version, the second appliance having services of the application at a second version, the services in the first appliance being active and the services in the second appliance being inactive;
- expanding, by the lifecycle management software, the state of the first appliance to support both the services at the first version and the services at the second version; replicating, by the lifecycle management software, the state of the first appliance to the second appliance;
- performing, by the lifecycle management software, a switchover to stop the services of the first appliance and start the services of the second appliance; and contracting, by the lifecycle management software, state of the second appliance to remove a portion unused by the services at the second version.
https://patents.google.com/patent/US20230106877A1/en?oq=US20230106877A1
Education
- Bachelor's Degree, Engineer of Electronics
Technical University of Sofia
15 Sep 2009 – 16 Feb 2015
Upstaffer since July, 2026
