Java Developer

Experience

Senior Software Engineer / Reddlyne Software System Solutions Inc

May 2022 ‐ Current

Ankara, Turkey

• Developing social media platform backend services

• Following microservices designed and implemented in Java and Go; distributed counter service, relevancy service, recommendation service, timeline service, and search service

• Worked in project that integrate Turkey to EU Digital COVID Certificate ecosystem

• Work with Ministry of Health of Turkey to migrate monolith Covid-19 epidemic disease preventation mobile application

• Hayat Eve Sigar backend services to microservices architecture

• Used Technologies such as Cassandra, Dgraph, Clickhouse, Mqtt5, Kafka, Redis, Mongodb, containerization technologies Kubernetes and TDD methodologies

• Gitlab-CI used at CI and CD part

• Locust is used for load testing of rest endpoints.

Senior Software Engineer / Havelsan Inc

May 2019 ‐ May 2022

Ankara, Turkey

• Responsible for develop and maintain data distribution infrastructure named “Havelsan Data Infrastructure Services -

• HADISE” for command control and combat systems

• Develop and maintain System Management And Maintain Library name “System Manager - SM” to manage any module part of Projects of command control and combat systems

• Used Technologies such as Kafka, Redis, Mongodb, containerization technologies,

• Kubernetes, BDD and TDD methodologies

• Jenkins used at CI and CD part.

Software Engineer / Innova IT Solutions Inc

May 2018 ‐ May 2019

Ankara, Turkey

• As a software engineer, responsible for analysis and implement need for the company Build backend services with Java

• Used BPM tool Activiti

• Build backend services with Java and Spring

• Used BPM tool named Activiti

• Using JUnit I build out a unit testing infrastructure to easy to cover edge cases

• Used Technologies such as Spring, Kafka, Mongodb, Docker, Jenkins, Sonarqube, Reactjs.

Software Engineer / Mavinci IT Solutions Inc

Nov 2017 ‐ May 2018

Ankara, Turkey

• Build Rest APIs with spring framework to serve data to the Angularjs based front-end application

• Develop front-end pages with Angularjs

• Tuning Yeoman files to generate scaffold files

• Used Technologies such as Spring, Reactjs, Postgresql 

Projects:

Yaay | Java, Spring, Go, Openshift, Docker, GitHub Actions, Gitlab-CI, Jira 

March 2022

• Yaay is a Turkey-based online news and social networking site where people share status and updates in messages like Twitter. 

• Developed social media platform backend services. Following microservices designed and implemented in Java and Go; distributed counter service, relevancy service, recommendation service, timeline service, and search service. 

• Constructed Rest APIs with Spring Framework. Use Locust, load testing framework to test the performance of backend services. 

• Manage mTLS secure connection needs. Setting up monitoring infrastructure with ELK Stack and Prometheus.

HealthPass | Java, Spring, Kubernetes, Gitlab-CI, Jira 

February 2020 

• Health Pass is an easy-to-use app to store vaccinations, tests and immunization certificates within international standards. Health Pass makes you able to transport across EU member states during travels. 

• Close work with the Organization of the EU Digital COVID Certificates (EUDCC) to design and implement backend integration requirements of EU Digital Green Certificate. 

• Constructed Rest APIs with Spring Framework. Use Locust, load testing framework to test the performance of backend services. 

• Manage mTLS secure connection needs. Setting up monitoring infrastructure with Prometheus.

Hayat Eve Sigar | Java, Spring, Kubernetes, Jenkins, Trello, TFS 

February 2020 

• Hayat Eve Sigar shortly HES is a project Ministry of Health of Turkey that informs and guides to Turkish citizens about the New Coronavirus (Covid-19) and minimizes and spreads the risks related to the epidemic disease. 

• As 3 team members, designed backend microservice migration architecture and implemented in Java with SpringFramework.  

• Setting up Gitlab-CI pipeline to automatize the process of deployment of built service to the Kubernetes cluster.

Hadise - Havelsan Data Infrastructure Services | Java, Docker, Jenkins, Jira 

May 2019 

• Designed a data distribution framework for in-house Command and control projects to satisfy data infrastructure needs like message queue, cache, and data-store. 

• Used Java to implement adaptation and abstraction layers to infrastructure tools like Kafka, MongoDB, Redis, and Rabbitmq. 

• Worked with other project teams to extract their requirements and evaluate the product.

Havelsan SM - Havelsan Data Infrastructure Services | Java, Docker, Jenkins, Jira 

May 2019  

• Designed a data distribution framework for in-house Command and control projects to satisfy data infrastructure needs like message queue, cache and data store.  

• Used Java to implement adaptation and abstraction layers to infrastructure tools like Kafka, MongoDB, Redis, and Rabbitmq.  

• Worked with other project teams to extract their requirements and evaluate the product.

Peyk | Java, React, Docker, Jenkins 

May 2018

• Peyk is an incident and service request management system. Developed for many Governmental Institutions using Telekom's Fatih Project. Institution office-bearer can log in to the system and create their incident or request. Also, Institutes can follow their incidents or requests.

• Worked with customers to collect requirements design database structure and implement service-level logic.