Orhan Y. Email and Phone Number

● Developed backend services for an ERP project using Spring Boot and contributedto frontend development with Angular, ensuring cohesive integration across thesystem.● Implemented new integrations within the ERP system to enhance functionality andsupport additional business processes.● Designed, developed, and deployed new microservices to support the system’smodularity and scalability goals.● Led design efforts for transforming a monolithic architecture into amicroservices-based structure, focusing on scalability, modularity, andperformance improvements.

• Creating detailed Solution Architecture designs and corresponding Software Architecture Documents, including High-Level Design (HLD) and Low-Level Design (LLD) documents, with a focus on scalability, performance, security, and maintainability for projects.• Actively coding (OOP, Functional) and contributing to the development of projects, ensuring high-quality software creation and implementation. • Proficient in leveraging Kafka and Redis for scalable, high-throughput and low- latency messaging and caching solutions.• Experienced in designing, optimizing, and managing databases with PostgreSQL, Oracle and Mongo ensuring data integrity, performance, and scalability.• Building distributed, service-oriented, micro-service-style and cloud-based solutions • Ensuring the delivery of software modules, products and solutions with committed functionality and performance criteria, within committed timelines• Converting Business requirements to functional requirements and non-functional requirements• Decision Software architecture Design Patterns in a cloud-native environment.• Preparing design documents, flowcharts, database models, and architecture diagrams.• Methodical assessments of code designed to identify bugs, increase code quality, and help developers learn the source code.• Collaborate with clients, business analysts, and development teams • Managing code review processes and merge requests.• Performing troubleshooting and support activities for the software modules, products and solutions delivered.• Making research and implementing new technologies to improve time to market, quality, flexibility and reusability• Mentoring and guiding less experienced team members to improve their skills and vision.

• Know-how and experience on software architecture, design and development technologies such as;• Microservices, containers and cloud native applications,• APIs, Web Services, SOAP, REST and similar technologies,• Taking action to improve current situations or address challenges and potential opportunities • Considering the pros and cons of different options and situations to make informed and robust decisions • Java and/or similar modern programming languages, Spring and/or similar frameworks,• Algorithms, object oriented programming, design patterns,• Operating system, database and networking concepts,• Agile software development methodologies,• Knowhow and experience of Telecommunication concepts and services• Experience with Java programming language and Spring Boot framework,• Knowledge of programming basics such as object-oriented design, algorithm and system design, data structures, and system architecture,• Programming and design experiences with micro-service architecture, event-driven programming, and distributed systems,• Strong understanding of the software development life-cycle including CI/CD processes, pair programming, continuous testing, and refactoring,• Experience working within agile and delivery-focused development teams and processes,• Familiarity with the database fundamentals such as building and maintaining high-available, scalable, robust database systems,• Proficiency with SQL, relational data modeling, and basic database schema design,• Deeply knowledge in some open-source products such as Elasticsearch,Kafka RabbitMQ,• Experience with containerization technologies such as Kubernetes and Docker,• Strong leadership, communication, project management, time management and problem solving skills in a software development organization.• Experience with an unit testing framework JUnit and experience TDD

• Full Stack Software Design and Development in Agile (scrum) ecosystem.• Experience Core Java and Spring modules; Spring Web, Spring Security, Spring Data etc.• Experience with Oracle, MySql, PostgreSQL and use of Hibernate.• Knowledge Cloud Native Architecture approaching, Microservices and Management Container Technologies (Docker, Kubernetes)• Experience with Software Design and Software Architecture Patterns and SOLID Principles.• Acting role as Scrum Master for development projects and reporting structural feedbacks to manager level.• Supporting analysis and test teams and coaching for junior/senior developer members. • Learning about emerging technologies and to keep their self up to date.• Good team player, result oriented attitude and strong communicational and interpersonal skills.• Detecting general problems of customers and producing remedies by creating procedures.• Planning maintenance window, creating documentation and roll back plan.• Completing deployment and manage necessary monitoring period for the new release.• Performing Problem Management process and publishing customers.

• Manage and develop relationship and crisis situations for Fixed, Gsm and VAS (M2M, MDM, SMS) services• Solving technical issues with end-to-end control via applications logs or databases.• Leading technical phase for SMS platform projects for international customers.• Single Point of Contact regarding products and services, forwarding to all related parties.• Periodically customer visit to define their needs and problems to achieve customer satisfaction.• Managing field support teams, design in their service desk processes.• Satisfy strategic accounts of Turkcell needs and co-ordinating customer experience management teams. • Activities to support teams for technical and procedural training.

• Event management, event detection, logging, categorizing, making monitoring.• Handle Turkcell service network incidents according to pre-defined rules.• Coordinating other teams and managing faults in order to decrease response time.• Providing 7x24 technical service continuity. Following and reach pre-defined service SLA scores.• Joining Change Management Advisory Board meeting.