Java Backend Developer specializing in Spring Boot, PostgreSQL, and scalable backend systems.

I have hands-on experience building production-ready REST APIs, designing clean and modular architectures, and developing high-performance backend services for enterprise and SaaS platforms.

I focus on clean code, maintainability, and real-world backend solutions.

• Java (3+ years)
• Spring Boot (REST APIs, layered architecture, Security)
• PostgreSQL (data modeling, normalization, performance optimization)
• Clean Code, SOLID, OOP
• Swagger / OpenAPI
• Unit Testing (JUnit)
• Microservice-oriented backend design

Backend

• Java, Spring Boot
• RESTful API Design
• Swagger / OpenAPI

Database

• PostgreSQL
• SQL Query Optimization
• Data Modeling and Performance Tuning

Frontend and Mobile (Supporting)

• React
• Kotlin (Android)
• Swift (iOS)

Other

• Git and GitHub
• API Integrations
• Algorithm Design

2025 – Present

• Developed real-time backend modules processing sensor data
• Designed PostgreSQL-based data collection, analysis, and reporting systems
• Built backend components improving production stability and reducing fault detection time

2024 – Present

• Developed production-level REST services using Spring Boot
• Worked on service design, validation, error handling, and layered architecture
• Built backend APIs for AI-powered systems
• Contributed to frontend and mobile components when needed

Technologies: Java, Spring Boot, PostgreSQL, React, Kotlin, Swift, REST APIs

2023 – 2024

• Developed enterprise web applications using Java and React
• Designed and optimized PostgreSQL database models
• Built backend modules actively running in production environments

2024 – Present
https://sagliktan.com

• Backend development with Spring Boot
• PostgreSQL database design
• AI-powered analysis module integrations

Technologies: Java, Spring Boot, PostgreSQL, React, REST API, AI Integration

2024 – 2025

• Built data pipelines for multivariate sensor data
• Developed backend modules for fault detection algorithms
• Integrated IoT and automation device data streams

Technologies: Java, Spring Boot, PostgreSQL, Data Processing, IoT

• Manisa Celal Bayar University – Computer Engineering (English)
  2022 – Present
• Kütahya Dumlupınar University – Computer Programming
  2020 – 2022

• Turkish: Native
• English: B1–B2 (technical documentation and professional communication)

• Website: https://www.ridvankarsli.com
• LinkedIn: https://linkedin.com/in/ridvan-karsli-44a783294
• GitHub: https://github.com/ridvanKarsli
• Email: rdvn.35050@gmail.com