Backend Engineer with strong experience in Java, Spring Boot, and distributed systems I build scalable backend services, APIs, and system architecture
Aktualisiert am 31.03.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 06.04.2026
Verfügbar zu: 100%
davon vor Ort: 100%
java
spring boot
hibernate
REST
Microservices
SQL
MySQL
Oracle
MS SQL Server
Docker
Jenkins
GitHub
Acceptance Test
Rational PerformanceTester
English
Verhandlungssicher
Turkish
Muttersprache
Polish
Grundkenntnisse

Einsatzorte

Einsatzorte

Deutschland
möglich

Projekte

Projekte

2 years 11 months
2023-06 - 2026-04

Business Banking Platform Development and Customization

Software Engineer (Java / Spring Boot), Software Developer Java Spring Boot Microservices ...
Software Engineer (Java / Spring Boot), Software Developer
  • Worked on the development of Backbase Business Banking platform, which is used by more than 160 banks worldwide.
  • The platform enables corporate customers to manage accounts, users, permissions, and transactions.
  • I worked mainly as a backend developer using Java and Spring Boot in a microservice architecture.
  • My work included developing REST APIs, working with SQL databases, implementing new features, and fixing production issues.
  • In addition to development, I also served as a Chapter Lead, where I supported and mentored engineers, helped with technical decisions, and contributed to improving development standards and code quality.
  • We worked in an international agile environment with distributed teams.
Backbase Business Banking Platform Backbase Digital Banking Platform Finance Reporting
Java Spring Boot Microservices REST APIs SQL Docker Kubernetes Maven Git Agile Oracle Performance
Backbase
Warsaw, Poland
10 months
2022-08 - 2023-05

Interal Projects

Software Developer Java
Software Developer
Java
EPAM
Warsaw, Poland
9 months
2021-11 - 2022-07

various Projects

Software Developer Java
Software Developer
Java
Vodafone
istanbul, Turkey
2 years 4 months
2019-01 - 2021-04

Telecom CRM and Digital Transformation Platform Development

Software Developer Java Spring Oracle DB ...
Software Developer
  • I worked on telecom CRM and digital transformation projects for one of the largest telecommunications companies.
  • The systems were used to manage customer accounts, subscriptions, billing, and order management processes.
  • I worked mainly as a backend developer using Java and Spring technologies.
  • My responsibilities included developing backend services, creating REST APIs, working with databases, and implementing new features based on business requirements.
  • I also worked on integration between different telecom systems such as CRM, billing, and order management systems.
  • The platform was a large-scale system serving millions of customers, so performance and reliability were very important.
  • We worked in agile teams and collaborated with analysts, testers, and frontend developers.
Etiya CRM Telecom BSS/OSS Systems
Java Spring Oracle DB REST Services Maven Git
Turk Telecom - Etiya
Remote
1 year 1 month
2018-01 - 2019-01

Software Developement

Software Developer HTML5 JavaScript JQuery ...
Software Developer
HTML5 JavaScript JQuery CSS3 Bootstrap
Orgiona Medya

Aus- und Weiterbildung

Aus- und Weiterbildung

Computer Engineer

Trakya University

Position

Position


Kompetenzen

Kompetenzen

Top-Skills

java spring boot hibernate REST Microservices SQL MySQL Oracle MS SQL Server Docker Jenkins GitHub Acceptance Test Rational PerformanceTester

Produkte / Standards / Erfahrungen / Methoden

Java
8, 11, 17, 21
SQL
Spring Boot
Maven
Microservices
Hibernate
OOP

Profile

  • Backend Software Engineer specializing in Java and Spring Boot, working on large-scale enterprise platforms in banking and telecommunications. 
  • Experienced in microservices, REST APIs, system integration, and working in international agile teams.

Programmiersprachen

Java
Experte
Database
Fortgeschritten
Spring boot
Experte
Hibernate
Experte
Rest
Experte

Branchen

Branchen

  • Banking / Fintech
  • Telecommunications
  • Enterprise Software / Consulting
  • Digital Platforms / SaaS
  • CRM / BSS systems

Einsatzorte

Einsatzorte

Deutschland
möglich

Projekte

Projekte

2 years 11 months
2023-06 - 2026-04

Business Banking Platform Development and Customization

Software Engineer (Java / Spring Boot), Software Developer Java Spring Boot Microservices ...
Software Engineer (Java / Spring Boot), Software Developer
  • Worked on the development of Backbase Business Banking platform, which is used by more than 160 banks worldwide.
  • The platform enables corporate customers to manage accounts, users, permissions, and transactions.
  • I worked mainly as a backend developer using Java and Spring Boot in a microservice architecture.
  • My work included developing REST APIs, working with SQL databases, implementing new features, and fixing production issues.
  • In addition to development, I also served as a Chapter Lead, where I supported and mentored engineers, helped with technical decisions, and contributed to improving development standards and code quality.
  • We worked in an international agile environment with distributed teams.
Backbase Business Banking Platform Backbase Digital Banking Platform Finance Reporting
Java Spring Boot Microservices REST APIs SQL Docker Kubernetes Maven Git Agile Oracle Performance
Backbase
Warsaw, Poland
10 months
2022-08 - 2023-05

Interal Projects

Software Developer Java
Software Developer
Java
EPAM
Warsaw, Poland
9 months
2021-11 - 2022-07

various Projects

Software Developer Java
Software Developer
Java
Vodafone
istanbul, Turkey
2 years 4 months
2019-01 - 2021-04

Telecom CRM and Digital Transformation Platform Development

Software Developer Java Spring Oracle DB ...
Software Developer
  • I worked on telecom CRM and digital transformation projects for one of the largest telecommunications companies.
  • The systems were used to manage customer accounts, subscriptions, billing, and order management processes.
  • I worked mainly as a backend developer using Java and Spring technologies.
  • My responsibilities included developing backend services, creating REST APIs, working with databases, and implementing new features based on business requirements.
  • I also worked on integration between different telecom systems such as CRM, billing, and order management systems.
  • The platform was a large-scale system serving millions of customers, so performance and reliability were very important.
  • We worked in agile teams and collaborated with analysts, testers, and frontend developers.
Etiya CRM Telecom BSS/OSS Systems
Java Spring Oracle DB REST Services Maven Git
Turk Telecom - Etiya
Remote
1 year 1 month
2018-01 - 2019-01

Software Developement

Software Developer HTML5 JavaScript JQuery ...
Software Developer
HTML5 JavaScript JQuery CSS3 Bootstrap
Orgiona Medya

Aus- und Weiterbildung

Aus- und Weiterbildung

Computer Engineer

Trakya University

Position

Position


Kompetenzen

Kompetenzen

Top-Skills

java spring boot hibernate REST Microservices SQL MySQL Oracle MS SQL Server Docker Jenkins GitHub Acceptance Test Rational PerformanceTester

Produkte / Standards / Erfahrungen / Methoden

Java
8, 11, 17, 21
SQL
Spring Boot
Maven
Microservices
Hibernate
OOP

Profile

  • Backend Software Engineer specializing in Java and Spring Boot, working on large-scale enterprise platforms in banking and telecommunications. 
  • Experienced in microservices, REST APIs, system integration, and working in international agile teams.

Programmiersprachen

Java
Experte
Database
Fortgeschritten
Spring boot
Experte
Hibernate
Experte
Rest
Experte

Branchen

Branchen

  • Banking / Fintech
  • Telecommunications
  • Enterprise Software / Consulting
  • Digital Platforms / SaaS
  • CRM / BSS systems

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

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