İlyas Ziyaoğlu
Senior Software Engineer
I am a Senior Software Engineer with over 5 years of experience in designing scalable microservices, leading high-traffic systems, and improving code quality through advanced architectural principles. Adept at improving software quality, reducing technical debt, and mentoring junior engineers. Throughout my career, I improved myself first with my education and then with my professional experience, various trainings and individual projects. Moreover, in terms of research, self-motivation, entrepreneurship and acquiring different skills. I want to state that I am very dedicated and enthusiastic about being effective and fast in business life and want to take responsibility for the position interestedly. I am aware that working with enthusiasm, diligence and care will definitely result in success. Therefore, I do not doubt I can contribute to you with my skills and work discipline.
EDUCATION
Computer Engineer
Kocaeli University
09/2015 - 07/2019
Kocaeli
TECHNICAL STACK
Programming Languages
Java22, JavaScript, Python3
Build Tools
Maven, Gradle
CI/CD
Git, Git Branching Strategies, Jenkins, ArgoCD
Frameworks
Feign, Retrofit, Hystrix, Resilience4j
Security
JWT, OAuth, OAuth2, SSO, XSS, SQL Injection, CORS, CSRF, Fraud Detection
Spring
Core, Boot, Security, Data, Integration, Cloud
Cache
Redis, Hazelcast, EhCache
Database
MongoDB, Oracle, Postgres, MySQL
Logging & Monitoring
Slf4j, Log4j, Logback, Splunk, Instana
Unit Test
Junit4, Junit5, Mockito, AssertJ, JaCoCo
OTHER SKILLS
Micro Services
AWS
Scalable System
Kafka
Restful APIs
SOLID Principles
Design Patterns
Refactoring
Angular
Linux
Jmeter
Docker
Bash Script
System Design
SOFT SKILLS
Ownership
Leadership
Communication
Teamwork
Critical Thinking
Time Optimization
LANGUAGES
English
Full Professional Proficiency
Turkish
Native
WORK EXPERIENCE
Senior Java Engineer
Vodafone
04/2023 - 09/2024
Istanbul
Achievements / Tasks
-- Led the architecture design for microservices that scaled to support 20M+ daily traffic
-- Implemented aspect-oriented logging architecture, leading to better separation of concerns and easier debugging of business logic. Leading to 90% reduction in manual logging efforts
-- Developed a context management architecture, providing developers with easy access to user and contextual data, reducing %15 boilerplate code
-- Designed an extensible microservices architecture adhering to SOLID principles and best practices, enabling enhanced maintainability and extensibility
-- Reduced code duplication and management costs by 30% through the creation of reusable libraries
Middle Java Engineer
Vodafone
10/2021 - 04/2023
Istanbul
Achievements / Tasks
-- Developed intricate features like gamification, game engine, benefit gifting, preference-based/AI-powered special offers and loyalty points systems
-- Improved development team efficiency by implementing CI standards and streamlined transformation mechanisms
-- Established project-specific code review checklist, ensuring consistent code quality and reducing review %20 of turnaround time
-- Bug Fixes
Java Engineer
Turkcell
08/2019 - 10/2021
Istanbul
Achievements / Tasks
-- Payment and Return Management
-- Shipping Management
-- Basket Management
-- Product Feature Management
-- Product Rating
-- Bug Fixes
Intern
Siemens
06/2018 - 08/2018
Istanbul
Projects
-- Developed Bid Data Management and Evaluation System. The system reduces bid evaluation time from hours to seconds for purchasing managers
-- Developed calculation and reporting system of cable standard and length required by circuit elements in electricity projects such as tunnel and railway. The system reduces reporting time from hours to seconds for electrical engineers
ORGANIZATIONS
DATUB
Active member (2018 - Present)
Kocaeli Ahıska Youth
Founder (2015 - 2019)
Kocaeli University Computer Club
Active member (2016 - 2018)
Google Developer Group Kocaeli
Active member (2016 - 2017)
Kocaeli University Underwater Club
Single star diver training (2015 - 2016)
IEEE Computer Society
Active member (2015 - 2018)