Hatice Kumru
Amsterdam
Summary
Highly motivated Senior Software Engineer with 8+ years of experience in designing, developing, and maintaining scalable backend systems. Proven expertise in object-oriented languages (Java, Perl, Python), web frameworks (Spring Boot, Dropwizard), and cloud technologies (Kubernetes, Docker). Passionate about clean code, testing, and applying Domain-Driven Design principles to deliver high-quality solutions and seeking a challenging role to leverage my skills in building robust and efficient applications.
Overview
9
9
years of professional experience
Work History
Software Engineer II
Booking.com
08.2021 - Current
- Led the design and implementation of an authorization project for partner hotels, improving security and efficiency of partner requests by 15%, reducing maintenance of the project by 50%
- Developed and maintained the backend of a notification system for partner hotels, resulting in a 10% reduction in partner support tickets.
- Migrated the rate-plans project to a standalone service on Google Cloud, achieving a 20% performance improvement and reducing infrastructure costs.
- Enhanced the ical service for availability synchronization with external providers (Airbnb, Trivago), increasing data accuracy and synchronization speed.
- Implemented new features and maintained availability services for partner hotels, ensuring high availability and scalability.
- Created new cron jobs to handle data streaming for marketing purposes.
- Implemented an internal project for hotels that shows approximate pricing for a room according to close distance and location to new partners (hotels).
- Contributed to the hiring process as an interviewer and mentored graduates and new hires.
- Tech Stack: Perl, Java 11, Dropwizard, Kibana, Kubernetes, Docker, Grafana, MySQL, GraphQL, Spring Boot, Quarkus, Domain-Driven Design, Test Containers
Backend Engineer
eBay / mobile.de
06.2019 - 08.2021
- Developed a new microservice (SaaS) using Spring Boot for sending email and SMS notifications, handling all marketing emails and notifications.
- Implemented a new feature to delete dormant accounts, impacting approximately 14 million customers and resulting in alignment with GDPR
- Implemented new legally complied invoices for customers
- Maintained current microservices based on ownership guidelines
- Migrated CAS authentication to Okta OAuth to login to customers on the website
- Tech Stack: Java 11, Spring Boot, Dropwizard, Javascript, Mesos, Kibana, Kafka, Docker, Grafana, Domain Driven Design, Test Containers
Software Engineer
General Electric Aviation
03.2018 - 10.2019
- Developed new web application which is internal app using Spring Boot and Vue.js to generate report for usage of the aircraft engineers
- Tech Stack: Java 8, Spring Boot, Javascript, Vue.js
Backend Engineer
commercetools GmbH
10.2018 - 03.2019
- Developed a order management service within microservice architecture
- Improved tests for existing services
- Automated deployments for existing services
- Tech Stack: Java, Spring Boot, Docker, Kubernetes
Software Engineer
OBSS
05.2017 - 03.2018
- Created new project using JHipster for agents
- Developed rest services for web application using Spring Boot
- Developed backend for existing mobile application using Spring Boot
- Managed backend application deployment for production environment
- Tech Stack: Spring Boot, Spring Data, Spring Batch, Angular 4, Elasticsearch, Npm, Java 8, Liquibase
Software Engineer
Insurance Information and Monitoring Center
05.2016 - 05.2017
- Developed, upgraded, and maintained existing Android applications within backend and mobile platform which supports help drivers in case of traffic accident
- Developed, upgraded, and maintained existing IOS applications with Objective-C and Swift
- Developed backend for MKT, SBM Mobile applications which collects all insurance information for the agencies
- Gained experience working within a Scrum environment using Jira and Agile development and familiarity with sprint planning, demos and retros
- Tech Stack: Java, Swift, Objective-C, Spring MVC, Jenkins, Android, IOS
Software Engineer
Biotek
11.2015 - 04.2016
- Maintained existing Android application
- Developed using javascript with Node.js, Socket.io for application server side
- Maintained backend using Spring
- Tech Stack: Java, Android, Spring MVC, JavaScript, Node.js, Socket.io
Education
Bachelor of Science - Computer Science & Engineering
Yeditepe University
Istanbul03-2016
Skills
- Languages: Java (11, 8), Perl, JavaScript, Kotlin, Objective-C, Swift, Python
- Frameworks: Spring Boot, Dropwizard, Quarkus, Spring MVC, Spring WebFlux, Vuejs, Angular 4, Nodejs
- Databases: MySQL, Elasticsearch, RDBMS, NoSQL, Liquibase
- Cloud/DevOps: Kubernetes, Docker, AWS, Mesos, Kafka, Grafana, Kibana, Jenkins, Maven, Gradle, Test Containers
- Other: Domain-Driven Design, GraphQL, Socketio
Timeline
Software Engineer II
Booking.com
08.2021 - Current
Backend Engineer
eBay / mobile.de
06.2019 - 08.2021
Backend Engineer
commercetools GmbH
10.2018 - 03.2019
Software Engineer
General Electric Aviation
03.2018 - 10.2019
Software Engineer
OBSS
05.2017 - 03.2018
Software Engineer
Insurance Information and Monitoring Center
05.2016 - 05.2017
Software Engineer
Biotek
11.2015 - 04.2016
Bachelor of Science - Computer Science & Engineering
Yeditepe University
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