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Bahadir Guldiken

Backend Engineer

İstanbul, Türkiye
I am a backend developer with 10+ years experience in Java technologies who can design, architect, develop, test, package a Java app including database, web service APIs & business logic.

I developed enterprise grade apps in telecom & healthcare area previously, that are in production.

Tech Stack: Java, Spring Boot, Hibernate, Oracle, MySQL, Docker, Tomcat, Maven, Gradle, AWS Lambda, JUnit, Mockito, Git


Senior Software Engineer

Varteq Inc

Full time contract2/2022 - 3/2023
  1. Development & maintenance of healthcare services with Spring Boot on Google Cloud using Pub/Sub, MySQL, Flyway as microservices
  2. Development of a flexible AWS Lambda service for validation & transformation of human input for various cases using SQS, MySQL
Java Developer

Argela Technologies

Full time contract4/2007 - 12/2012
  1. Analysis, design, development, testing, performance optimization & addressing NFR cases (HA & failover) for JEE based BSS application of IPTV in client-server architecture
  2. It included subscriber, product, offer, rating, charging manager modules using EJB, JPA, JAX-WS, JMS on Glassfish Server and Hibernate & Oracle on database side
Senior Software Engineer

Turk Telekom

Full time contract6/2013 - 8/2021
  1. Maintenance, development of portal & batch apps based on Spring, Spring Boot, Java, Oracle, Hibernate, Maven, JSF, Primefaces, Tomcat


Middle East Technical University

Computer Science

Bachelor's DegreeClass of 2004


JavaSpring BootSoftware designRESTful APISQLAWS LambdaDockerGitGolang


Senior-level8+ years

Hourly rate


Open to


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