05/05/2026 updated

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Full Stack Java Developer

İstanbul, Turkey
Only remote
Computer Programming (ongoing, expected 2026) - Atatürk University
İstanbul, Turkey
Only remote
Computer Programming (ongoing, expected 2026) - Atatürk University

Profile attachments

full-stack-sumeyye_nacar_resume.pdf

About me

Erfahrene Full Stack Entwicklerin mit Fokus auf das Java-Ecosystem (Spring Boot, Hibernate). Ich entwickle skalierbare Microservices und moderne Frontends mit Next.js und TypeScript. Spezialisiert auf Clean Code, SOLID-Prinzipien und effiziente Cloud-Deployments (AWS/Docker).

Java (Programming Language)JavaScriptJava Development ToolsSpring FrameworkJDeveloperNext.jsSpring CloudReact.jsSpring BootBackendFull Stack DevelopmentFront End Software Development
Java & Spring Boot Backend Development
Expertise in building high-performance backend systems using Java, Spring Boot (2.7.5), Spring Security, Spring Data JPA, and Hibernate. Strong focus on Microservices architecture, RESTful API design, and SOLID principles, with hands-on experience in designing scalable, maintainable codebases.

Frontend Engineering with Next.js & React
Proficiency in frontend development using Next.js (14/15), React, TypeScript, and JavaScript (ES6+). Deep mastery of HTML5, SCSS/SASS, Bootstrap, Chakra UI, and Framer Motion to build responsive, SEO-optimized, and high-performance user interfaces.

Microservices Architecture & Cloud-Ready Deployment
Solid experience in architecting and deploying applications following Microservices and Clean Architecture principles. Skilled in containerization with Docker, CI/CD workflows using Git/GitHub, and monitoring with Spring Boot Actuator, Prometheus, and Micrometer.

Database & Storage Management
Hands-on experience with PostgreSQL and MongoDB, including hybrid storage strategies for relational and high-volume data. Proficiency in Flyway for database migrations and Cloudinary for media orchestration.

Security & Rate Limiting
Implementation of secure authentication and authorization layers using JWT and Spring Security. Experience with Bucket4j for API rate limiting and Apache Tika for advanced content parsing and MIME-type detection.

Testing & Quality Assurance
Achievement of high unit test coverage using JUnit and Mockito, significantly reducing production errors. Enforcement of code quality through BiomeJS standards and rigorous peer code reviews.

DevOps & Tooling
Practical experience with Docker for containerization, Kafka for messaging, Postman and Swagger for API documentation and testing, and Git/GitHub for version control and workflow management.

Agile Team Leadership & Mentoring
Proven ability to lead cross-functional development teams, manage technical delivery from architecture to production, mentor junior developers, and drive Agile (Scrum) workflows including sprint planning and code reviews.

SSR/SSG Optimization & SEO
Optimization of web application performance through Server-Side Rendering and Static Site Generation strategies, achieving significant improvements in page load times and SEO configurations.

Internationalization (i18n)
Integration of the i18n framework for bilingual (EN/TR) digital platforms, enabling multi-language support for applications serving 1,000+ active users.

Languages

EnglishFluentTurkishNative speaker

Project history

Full Stack Team Lead

Startup Educational Platform
Leading a 6-person development team to build a scalable online education platform, contributing to both backend and frontend development, and defining technical architecture, coding standards, and project delivery. Key achievements include defining technical architecture based on SOLID principles, architecting a modular backend with Spring Mail, implementing rate limiting with Bucket4j, enhancing security with Apache Tika, configuring Spring Actuator and Micrometer, engineering an interactive frontend with Next.js, Chakra UI, and Framer Motion, and developing data visualization dashboards with React Chart.js.

Frontend Developer - Remote (Part-time)

Smyrna Education
Built a bilingual (EN/TR) digital learning platform serving 1,000+ active users using Next.js and SSR/SSG optimization. Directed full SDLC for frontend features, standardized UI development with 30+ reusable components using Atomic Design, optimized SSR performance improving load times from 3.2s to 2.1s, conducted bi-weekly code reviews, and documented API integration processes. Integrated RESTful APIs, designed reusable UI components with React and SCSS, established the i18n framework, and mentored two junior developers within an Agile (Scrum) team.

Frontend Developer & Team Lead

Codella Dental (codelladental.net)
Led the development of a fully frontend, high-performance corporate website for Codella Dental. Managed the project technical direction, guided the development team, and ensured a clean, scalable architecture delivering a responsive, SEO-optimized experience without any backend dependency. Contributed approximately 70% of the codebase using Next.js 14 and Tailwind CSS, increased page load performance by 35% through SSR/SSG optimization, and integrated EmailJS for serverless form handling deployed on Cloudflare Pages.

Frontend Team Lead (Freelance)

Özkapan Corporate Website (ozkapan.com)
Directed the technical development of a corporate website for a construction and site accommodation provider showcasing modular buildings on a global scale. Oversaw a team of five developers while contributing approximately 40% of the codebase, delivering a responsive SEO-optimized UI using Next.js and SCSS. Increased load speed by 35% through SSR, SSG, and meta tag optimization, and designed a product showcase with filterable categories.

Full Stack Developer

Student Management System - eligibleschool.com (Project-based Contract)
Built a learning management system supporting 1,000+ students and staff for course and grade management. Refactored and enhanced 30+ RESTful APIs with Spring Boot improving backend response times by 25%, developed secure authentication layers using JWT, built 50+ reusable UI components with Next.js and SCSS, and collaborated within a five-member Agile team to maintain 99.9% uptime.

Backend Developer (Freelance)

Library Management System I (Project-based Contract)
Designed a scalable backend architecture for book inventory, borrowing workflows, and administrative management. Implemented a hybrid storage strategy using PostgreSQL and MongoDB, developed core services within a Microservices architecture, achieved 85% unit test coverage using JUnit and Mockito, containerized the application ecosystem using Docker, and developed over 70% of domain models and business logic layers following Clean Architecture principles.

Independent Learner & Freelance Web Developer

Independent / Freelance
Dedicated to mastering the modern Java ecosystem and delivering custom backend solutions for small-scale clients. Dedicated 1,500+ hours to intensive study of Java Core, Spring Framework, and SQL Database Design. Built and deployed full-stack projects to master Spring Security and Hibernate, developed landing pages and interactive dashboards using HTML5, CSS3/SCSS, and Bootstrap, and maintained a consistent daily commit history on GitHub.

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