• Technical leadership supervision over development in the organization with 200+ developers (distributed over Ukraine, Poland, Germany, India, China, Korea and US)
• review of requirements, architecture and decisions on technical stack selection
• coaching

Link Derivation Service 2.0 Project:

• Conversion of maps from the HD topology-based model to the SD link-based model (Scala, Java, Spark on AWS EMR)
• As technical lead and architect developed an architecture and main approaches to conversion; tutored the project team to improve their development skills

Migration from Gerrit/Jenkins to Gitlab project:

• Migrate all (30+) projects of the NDS organizational unit in HERE from Gerrit/Jenkins to GitLab (GitLab, YAML, Bash, Docker)
• Prepared and run a series of GitLab workshops for developers. Developed migration guides and templates. Drove and oversaw the migration process of all teams

NDS Compiler Migration Project:

• Migration of NDS Map Compilers development as well as production of NDS maps from the on-premise datacenter with Oracle Exadata to AWS using Oracle SE/SE2. (Oracle, Java, AWS RDS und AWS EC2, Gerrit/Jenkins, GitLab).
• As technical lead and Oracle export I led migration of development and production processes of NDS Map Compilation from on-premise Oracle Exadata to Oracle SE on AWS EC2

NDS-Compiler Optimization Project:

• Performance optimization of NDS Map Compilers (Oracle, Java).
• As technical lead and Oracle expert I led the performance improvements efforts for NDS map production process resulted in approx. 3-fold improvement

Unity 3 Project:

• Cloud-based high-performant Aggregation und Analytics for Nokia Services Business Logs; Analytics-Results presented via REST-Services and Tableau reports (Java, Hadoop (AWS EMR), Pig, Splunk, PostgreSQL (AWS RDS), RESTEasy, Tableau; Maven/Bamboo/Jenkins as CI tools; Crucible for code reviews; Kanban as development process; AWS as Deployment Platform)
• As a technical lead and an architect, I led the porting of Unity to the Cloud-environment (AWS) with a simultaneous replacement of the underlying database (from Oracle EE to PostgreSQL)

Unity Project:

• Centralized high-performant Aggregation und Analytics for Nokia Services Business Logs; Analytics-Results presented via REST-Services and Oracle Apex reports (Java, Hadoop, Pig, Oracle SQL und PL/SQL, RESTEasy, Oracle APEX; Maven/Bamboo/Jenkins as CI tools; Crucible for code reviews; Scrum as development process)
• As technical lead und Architect I led a development of the Unity project

FFE (Fulfillment Engine) Project:

• Centralized high-performant Authentication, Authorization und Business-Logging System for NAVTEQ Web-Shops, Web-Services und APIs. (Java, Spring, Oracle SQL und PL/SQL, JPA-Hibernate for non-time critical parts, Oracle APEX for Reporting; Maven/Bamboo/Jenkins as CI tools; Crucible for code reviews; Scrum as development process).
• Took over and improved the project architecture, as a technical lead (12-persons development team) and an ?acting architect ?I led a development of the 2nd and 3rd versions of the FFE System. Participated and then led a requirements analysis, an application and database development and optimization
• Delivered a series of SQL und PL/SQL Workshops for the NAVTEQ developers

• Company-wide technical responsibility for the development process organization and a technology stack selection
• As a technical lead I organized a change from the waterfall to the agile development process (XP-like)with elements of the ?Test-Driven-Development?; organized and participated in a feasibility testing of Spring und ThinWire; organized and led an internal trainings in Java, JEE, und Java-based technologies (Spring, JDBC, Hibernate, ThinWire), as well as Eclipse IDE for the company developers

LFS-Neuentechnologie Project:

• Java-based server-side components of the warehouse management system (in German ? Lagerführungssystem, LFS). (Java, Spring, Hibernate, Derby, Oracle, DB2 Universal Database for iSeries; agile development process).
• Firstly participated and then took over a leadership in a requirements analysis, an application and a DB-structure development and optimization; developed a ?search a place? module

Warehouse Monitor Project:

• Architecture, design and development of the flexible, database-independent, AJAX-based ?Warehouse Monitor? application (Dashboard- stile) for the realtime-monitoring of a warehouse state, as well over Internet. All indicators, DB connections and so on are freely configurable. (Java/Java2EE, Spring, ThinWire; Agile development process)
• As a project lead I developed an architecture of the application and implemented its main modules, led its development as a whole

FreeCall Project:

• Architecture, design und creation of the partially database-independent, AJAX-based fork lifts guidance application with an optimization of work orders and graphical representation of fork lifts state for small and medium organizations. (Java/Java2EE, Spring, ThinWire, Oracle, DB2 Universal Database für iSeries, Derby)
• As a project lead, I developed an architecture of the application and its main modules and led the development as a whole

Further development and customer support for various pre-existing customer-specific projects:

• (Oracle, SQL, PL/SQL, Oracle Developer, Java/Java2EE, Spring, ThinWire, Oracle, C, SAP SDK; waterfall und V-Model Prozesse)
• As a project lead, I organized a further development of the LFS- application, a customer support, a processing of hotline-requests, as well as a configuration of Oracle standby-databases by customers as well as a development of interfaces between the warehouse management system and SAP

• Design, Implementation und Support of the database for the DWH-application to process all Airwaybills for 38 countries. Development of a flexible reposting framework. (Oracle SQL and PL/SQL, Microsoft Visual Basic, Microsoft Excel, Windows batch language)
• As a lead architect and analyst, I developed an architecture of the applications and its underlying database. As a Oracle DBA performed an installation, a maintenance and an optimization of the respective database server

Flirt-Win:

• An Oracle-based system for creation of flight-related reports, and flight data clearing between airports and handling agents. A preparation of data for the airport traffic charging system of the ?Bundesamtes für Statistik? as well as for the airports analytical systems (Oracle SQL and PL/SQL, Delphi, Windows batch language, Unix Schell script language ? Korn Shell, Windows scripting, Install Shield, Visual SourceSafe)
• Configuration management, development of installationkits, installation of Oracle servers, creation and population of databases as well as installation of the Flirt-Win b? customers, customer support, administration and optimization of databases and DB-servers (on-site and remotely)

• Crossplatform integration of both existing and forthcoming TelesensKSCL products, based on Workflow Management System implementing the WfMC workflow reference model. (Java, C++, J2EE, C++, CORBA, Rational Rose, UML)
• As a lead architect and an analyst of the project, I developed an architecture, development guidelines and integrations technics for the integration of existing and new products

Basic Development Framework Project (not finished):

• Creation of the development framework, to be used in all forthcoming TelesensKSCL products. Was not finished due to a TelesensKSCL insolvency. (Java, J2EE; Rational development process) 
• As a member of the requirements analysis team participated in a planning and execution of feasibility studies of J2EE technologies in a telecommunication billing systems

IP-VPN Project:

• Development of a billing system for communication providers for IP-services provided over VPNs. (Rational Rose, UML, ?++)
• As a member of the requirement analysis team, I led an analysis and design of the ?limits and discounts? subsystem

• A joint effort of BASIS and UBTC banks to develop a bank information system according to the ?international accounting standards? introduced by National Bank of Ukraine (Oracle SQL and PL/SQL, Delphi, Java, ReportBuilder)
• As a lead of the joint team with 18 developers, I planned the whole system, developed its architecture (application and database) and implemented the most critical server-side components. As well, I directed the whole development, deployment and adoption process of this system

BASIS Project:

• Bank information system (transferred from Investor AG) (Oracle SQL, PL/SQL and Forms 4.0, C, C++)
• As a manager and a technical lead of an 8-person team, I planed the system, developed its architecture, and implemented the most critical server-side components, directed the overall development, deployment and adoption process of the system

• As a deputy team lead, I was responsible for technical and technological aspects of the development
• Ported the system into the AutoCAD environment
• Lead a development of the high-performance replacement for the BGI graphics drivers
• Lead porting of the system from DOS to Windows 3.1

• As a deputy team lead, I was responsible for all technical and technological aspects of the development
• Performed feasibility studies for porting of the system to the PC

• Participated in a development of an online enterprise information system for den biggest construction company in ex-USSR (IBM Mainframe, PL/1)
• I have designed and developed an online multi-threaded subsystem for processing of queries formulated in a custom query language

STEEL Construction Project:

• Offline information system for All-Union Ministry of Installation and Specialized Construction Work. (IBM mainframe, PL/1)
• Development of reports