12.10.2026 aktualisiert

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100 % verfügbar

Senior FullStack Developer and Team Leader (Java, DB, JavaScript)

München, Deutschland
München +100 km
Master's Degree in Computer Engineering and Construction, KNURE
München, Deutschland
München +100 km
Master's Degree in Computer Engineering and Construction, KNURE

Profilanlagen

CV Vasiliy Rubinsky.pdf

Skills

Java API For Restful Web ServicesNode.jsSQLJava Application ServerOracle 10g/11gReact ReduxMicroservices
Senior Software Developer / Solution Architect / Team Lead with 20+ years of experience in software development and 10+ years of professional Java development.
Core expertise:
  • Java, Spring, Spring Boot, Hibernate
  • Backend development, REST APIs, Web Services and Microservices
  • Software architecture, technical design and enterprise integration
  • Legacy modernization and maintenance of large enterprise applications
  • Oracle Database, SQL, PL/SQL and database-driven applications
  • JavaScript, Node.js, React, Redux, Angular
  • XML, XSD, XSLT, WSDL, SOAP
  • Multithreading, concurrency, transaction management and performance optimization
  • Troubleshooting, production support and root-cause analysis
  • Code reviews, technical leadership and mentoring
  • CI/CD and DevOps: Jenkins, Maven, Docker, Kubernetes, OpenShift
  • Git, Bitbucket, JIRA, Confluence
  • Apache Tomcat, WildFly/JBoss
  • Linux/Unix and Windows environments
Professional experience includes telecommunications, CRM, ordering, product catalog, customer management, billing and enterprise integration systems.
Experienced in designing and developing custom modules, integrating third-party systems, supporting distributed applications, improving database performance, troubleshooting production incidents and leading development teams.
Roles: Senior Java Developer, Software Architect, Technical Lead, Team Lead, DevOps Specialist.
Languages: English B2, German A2, Ukrainian and Russian native.

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2026

Sprachen

DeutschGrundkenntnisseEnglischverhandlungssicherRussischMuttersprache

Projekthistorie

Senior Developer, DevOps specialist, Group Leader

A1 Telekom Austria via SYTOSS (remotely)
Ongoing support and maintenance of various systems, development of SelfCare and ProductConfiguration modules (Java and JavaScript microservices). Responsibilities include defining architecture of custom modules and enterprise integration systems, coding and code reviews, online support, troubleshooting and maintenance, configuring environments and establishing procedures, and test support. Technologies: Java, PL/SQL, Node JS, React/Redux or Angular. Tools: IntelliJ IDEA, Oracle SQLDeveloper, Bitbucket, JIRA, Confluence, SOAP UI, Postman, Maven, Unix/Linux servers, Tomcat, Jenkins, Docker, Kubernetes, OpenShift.

Senior Developer, DevOps specialist, Group Leader

A1 Telekom Austria via SYTOSS (remotely), Kharkiv, Ukraine
A1 Telekom Austria ongoing support and maintenance of various systems, development of CRM modules (Java and JavaScript microservices). Responsibilities include defining architecture of custom modules and enterprise integration systems, coding and code reviews, online support, troubleshooting and maintenance, configuring environments and establishing procedures, and test support. Technologies: Java, PL/SQL, Node JS. Tools: IntelliJ IDEA, WebStorm, Oracle SQLDeveloper, Bitbucket, JIRA, Confluence, SOAP UI, Maven, Tomcat, Docker, Kubernetes.

Project Lead, Architect

A1 Belarus (Velcom) via SYTOSS, Kharkiv, Ukraine
Custom Ordering, point of sales, Customer- and Resource management systems development, customizing BSCS system, integration support and maintenance (BSCS Billing, Custom Ordering). Responsibilities include defining architecture of custom modules and enterprise integration systems, coding and code reviews, online support, troubleshooting and maintenance, ongoing support, and test support. Technologies: Java, XML, XSL, XSD, WSDL, Oracle, PL/SQL, Tomcat. Tools: Maven, Tomcat, Eclipse IDE, Oracle SQLDeveloper, Subversion, svn, bitbucket, JIRA, Confluence, TestLink, SOAP UI.

Senior Developer

Amdocs via SYTOSS, Kharkiv, Ukraine
Amdocs CSM, Enabler and Ensemble ongoing support and maintenance developer. Responsibilities include online support, troubleshooting and maintenance, custom modules implementation, code review, ongoing support, and test support. Technologies: C, Java, XML, XSL, XSD, WSDL, Oracle, PL/SQL, Tomcat, IBM WebSphere, Mainframe, COBOL. Tools: Maven, Tomcat, Eclipse IDE, Oracle SQLDeveloper, Subversion, svn, bitbucket, JIRA, Confluence, TestLink, SOAP UI.

Technical/Team Lead

SYTOSS, Kharkiv, Ukraine
Project of customization of CRM, Product Catalog, Order Synchronization and PK API for A1 Telekom. Responsibilities include organizational and technical management of team with 9 developers, technical design and architecture/design reviews, coding and performing code reviews, integrating software components and third-party programs, troubleshooting and debugging the software, support and maintenance, and testing support. Technologies: Java, XML, XSL, XSD, WSDL, Oracle 11-12, PL/SQL. Tools: Maven, Tomcat, Eclipse IDE, Oracle SQLDeveloper, Subversion, svn, bitbucket, JIRA, Confluence, TestLink, SOAP UI.

Senior Developer, Team Lead

A1 Telekom Austria via ENEX, Kharkiv, Ukraine
Project of customization CRM, Product Catalog, BNEI, Order Synchronization and PK API for A1 Telekom. Responsibilities include customizing GUI forms for customer requirements, coding, implementing and debugging software modules, changing database business logic, implementing bulk changes for business logic on database level, and improving performance for huge data. Technologies: Java, XML, XSL, XSD, WSDL, Oracle 9i, 11, PL/SQL. Tools: Tomcat, Eclipse IDE, Oracle SQLDeveloper, Rational ClearQuest.

Senior Developer

MaxBill Ukraine, Kharkiv, Ukraine
Project of customization of a CRM system for an enterprise telco customer. Responsibilities include customizing GUI forms for customer requirements, coding, implementing and debugging software modules, changing database business logic, implementing bulk changes for business logic on database level, and improving performance for huge data. Technologies: XML, XSL, XSD, WSDL, Delphi Enterprise 5.0, Ant, CVS, Oracle 9i, PL/SQL.

Programmer, Lecturer

National Technical University KhPI, Kharkiv, Ukraine
Projects: Faculty (time planning in education process, automatic generation of schedules) and Business Plan 2.0 (formation of a business plan based on known conditions including risk assessment, resource levels, working time, tax environment). Responsibilities include developing forms for user interface, coding, implementing and debugging software modules, and coding queries to database system by means of SQL. Technologies: Delphi Enterprise 3.0-6.0, VCL (Borland Inc.), BDE (Borland Inc.), Paradox 7.0 with Local SQL, Interbase, DB2.

Programmer

Design bureau of territorial water-supply association Kharkivcomunpromvod, Kharkiv, Ukraine
Project: Damage-recovery work dispatcher - registration and management of orders for damage-recovery works, working with normative-reference information, analytical calculations and document reports. Responsibilities include developing forms for user interface, coding, implementing and debugging software modules, and coding queries to database system by means of SQL. Technologies: Delphi Enterprise 2.0, VCL (Borland Inc.), BDE (Borland Inc.), Paradox 7.0 with Local SQL.

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