
Ninko Kovachevich
Verified Expert in Engineering
Data Engineer and Software Developer
Zürich, Switzerland
Toptal member since September 9, 2020
Ninko is a data solution architect with a background of over ten years in delivering data projects using various databases and data integration tools, as well as procedural programming languages and Python. He is proficient in developing data ingestion frameworks and has hands-on experience architecting data platforms and data warehouse systems. Ninko is determined, proactive, and capable of working in a fast-paced, dynamic environment.
Portfolio
Experience
- SQL - 10 years
- Data Engineering - 10 years
- Data Warehousing - 8 years
- Microsoft SQL Server - 5 years
- Database Modeling - 5 years
- Oracle - 5 years
- Azure - 3 years
- Big Data - 3 years
Availability
Preferred Environment
SQL, Microsoft SQL Server, Oracle, Big Data, Azure, Python, Snowflake, Databricks
The most amazing...
...project I have participated in is a real-time text messaging system, built for a telecom's marketing department, that affects thousands of people every day.
Work Experience
Data Engineer
UBS
- Designed and developed an event-based control framework to orchestrate our processes, which resulted in faster delivery of the data to our consumers.
- Proposed and implemented governance for Azure Data Factory, which led to clean code and better deployment procedures.
- Acted as a coordinator in resolving data issues in all environments to enable data consumers develop their applications.
Data Solution Architect
EPAM Systems
- Acted as the owner of the technical solution by designing the architecture and its components and supporting the actual development.
- Led the development of a Data Lake by leveraging Azure services and Snowflake to ingest data from various data sources like flat files, RDBMS, and REST APIs.
- Designed metadata-driven data pipelines to enhance reusability and configurability.
- Built and maintained project documentation, including solution architecture documents, development guides, naming conventions, data cataloging templates, and onboarding guides.
Senior DWH Consultant
Adastra Bulgaria Ltd
- Acted as a BI solutions architect and delivered complete implementation design documentation based on business requirements.
- Developed real-time processes with in-memory aggregation using Informatica PowerCenter.
- Took part in the optimization of the database operations by defining indexes and partitioning schemes.
- Took advantage of company training opportunities by completing big data, cloud, and other internal courses.
BI/ETL Developer and Technical Lead
DSM Engines LLC
- Designed and developed both relational and dimensional database models that would serve as a foundation of the company's projects.
- Developed processes for ingesting various file sources, including parsers for non-structured files.
- Took care of database maintenance such as backup scheduling.
ETL Implementation Engineer
cVidya Networks
- Worked on source data analysis by identifying data patterns, joining keys, enrichment, correlation, and filtration logic.
- Developed file parsers for binary files and non-structured files such as invoices.
- Wrote documentation such as low-level implementation details and user manuals.
Experience
Invoice Discrepancy Detection
Minimum Advertised Price Verification
Real-time Text Messaging System
Education
Master's Degree in Artificial Intelligence
Sofia University St. Kliment Ohridski - Sofia, Bulgaria
Master's Degree in IT Project Management
New Bulgarian University - Sofia, Bulgaria
Bachelor's Degree in Informatics
New Bulgarian University - Sofia, Bulgaria
Certifications
DAMA CDMP Certification – Associate
DAMA International
Microsoft Certified: Azure IoT Developer Specialty
Microsoft
Microsoft Certified: Azure Solutions Architect Expert
Microsoft
AWS Certified Developer Associate
Amazon Web Services
Microsoft Certified Solutions Associate (MCSA)
Microsoft
PowerCenter Data Integration 10: Developer, Specialist Certification
Informatica
Skills
Libraries/APIs
Spark Streaming
Tools
Informatica PowerCenter, Azure IoT Suite, Oracle Business Intelligence Enterprise Edition 11g (OBIEE), Informatica PowerExchange, Microsoft Power BI
Languages
SQL, T-SQL (Transact-SQL), Python, Snowflake, Java, C#, HTML
Paradigms
ETL
Platforms
Oracle, Azure, Databricks, Apache Kafka, Amazon Web Services (AWS), Stonebranch, Azure Functions
Storage
Database Modeling, Microsoft SQL Server, Oracle PL/SQL, SQL Server Integration Services (SSIS), SQL Server 2012, SQL Server 2008, SQL Server Analysis Services (SSAS), Azure SQL Databases
Frameworks
Hadoop, Spark
Other
Data Warehousing, Data Engineering, Data Warehouse Design, Azure Data Factory (ADF), Big Data, Database Optimization, Machine Learning, Azure Databricks, Azure Data Lake, Data Science, Natural Language Processing (NLP), IT Project Management, Informatica Cloud, Data Architecture, Data Management, Data Governance, Delta Tables
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