Orhan Türkmenoğlu

Founder @ Nexis Consulting | Building Intelligent Digital Solutions

Türkiye

About

I am a software developer specializing in Java and Spring Boot, building enterprise-level backend applications. I design scalable, maintainable, and high-performance systems using Microservices Architecture, Clean Architecture, and Domain-Driven Design principles. I develop secure authentication and authorization systems using JWT, OAuth2, and Keycloak, and build highly available, distributed services on Docker, Kubernetes, and AWS. I have strong experience in event-driven architectures, implementing resilient and asynchronous communication using Kafka and RabbitMQ. I ensure code quality with comprehensive unit and integration tests. I work extensively in the fintech domain, developing payment systems, digital wallets, banking integrations, and security-focused enterprise solutions. I also create AI-powered applications that enhance business processes and drive innovation. While my primary focus is backend development, I also take on full-stack responsibilities when needed. On the frontend, I build modern, user-centric interfaces with JavaScript, TypeScript, and React, and on the backend, I create microservices and REST APIs using Node.js. I’m passionate about contributing to the tech community—actively developing open-source projects on GitHub and sharing technical insights on Medium. My goal: To build innovative, impactful, and long-lasting software solutions that use technology to genuinely improve people’s lives.

Experience

  • Kurucu at Nexis Consulting
    May 2026 - Present · 2 mos

  • Java Software Developer at YB Digitall
    Oct 2025 - Present · 9 mos

  • Junior Java Developer at Netcare Sağlık Bilişim
    Jun 2025 - Jul 2025 · 2 mos

    Merhabalar, bu projede Netcare Sağlık Bilişim şirketinde Junior Java Developer olarak, Tıbbi görüntüleme (MR, Röntgen) sistemleri için Java tabanlı yazılım çözümleri geliştirmekten, Kullanıcı taleplerini karşılayacak RESTful API’ler tasarlamaktan, Mikro hizmet mimarileri üzerinde geliştirmeler yapmaktan ve Medikal yazılım çözümlerinde kalite ve performansı artıracak geliştirmeler gerçekleştirmekten sorumluyum.

  • Java Developer at HeAlthFintel
    Mar 2025 - May 2025 · 3 mos

    Merhabalar bu projede HealthFintel’ın Java developer’ı olarak, Kullanıcı taleplerini karşılamak için RESTful ​API’ler tasarlayacak, mikro hizmetler geliştirecek ve veri yönetimini sağlayacak çözümler üretmekten sorumluyum.