Mustafa Güler
Full Stack Java Developer
Summary
Result-oriented Software Developer with hands-on experience in designing and developing scalable backend systems. Skilled in working within Agile teams and contributing to DevOps processes. Committed to writing clean, testable code and continuously improving through learning new technologies and best practices.
Overview
4
4
years of professional experience
2
2
Languages
Work History
AI Software Developer
Outlier AI
10.2024 - 03.2025
- - Analyzed the outputs of LLM based systems and made accuracy assessments.
- - Evaluated the performance of LLM outputs, identified incorrect or incomplete responses, and provided improved samples to enhance model accuracy.
- - Built both backend services and frontend components for AI-based applications.
- Achievements/Tasks
Junior Java Developer
Pinatro
03.2023 - 02.2024
- - Developed and maintained RESTful APIs using Spring Boot, reducing response time by 25%.
- - Integrated JWT-based authentication with Spring Security, improving application security and role management.
- - Implemented database interactions via JPA/Hibernate, designed efficient relational schemas in PostgreSQL.
- - Improved CI/CD pipeline using Jenkins, leading to faster and error-free deployments.
- - Actively participated in Agile/Scrum ceremonies such as daily stand-ups, sprint planning, and retrospectives using Jira and Confluence.
- Achievements/Tasks
Junior Software Engineer
GittiGidiyor/eBay
07.2021 - 06.2022
- - Developed and maintained backend services using Java and PHP, ensuring secure and scalable API communication for transaction workflows.
- - Participated in Agile development (Scrum), using Jira for sprint planning and Confluence for technical documentation.
- - Supported the frontend team with React.js components related to cart and order summary views, improving user experience.
- - Supported integration of CI/CD pipelines via Jenkins and GitLab CI/CD, contributing to smoother deployment processes.
- - Took active part in the shopping cart and payment modules, handling functionalities such as cart management, user payments, and order processing.
- - Contributed to CI/CD pipelines with Jenkins and GitLab CI/CD, improving automation and deployment reliability.
- Achievements/Tasks
Education
Computer Programming - Eng
Istanbul Aydin University
07-2021
Skills
- Backend: Java (8), Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Hibernate / JPA, RESTful Services, Nodejs (Express), C#, NET Core, MVC, EF
- Frontend: React, Typescript, JavaScript, HTML, CSS, Bootstrap, MaterialUi
- DevOps: Docker, Kubernetes (K8s), Jenkins, GitLab CI
- Databases: PostgreSQL, MySQL, Redis
- Messaging: RabbitMQ
- Methodologies & Principles: Agile/Scrum, SOLID principles
- Testing: JUnit, Mockito, Integration Testing, Postman
Interests
Artificial Intelligence, Programming, Reading, Travelling, Searching
Timeline
AI Software Developer
Outlier AI
10.2024 - 03.2025
Junior Java Developer
Pinatro
03.2023 - 02.2024
Junior Software Engineer
GittiGidiyor/eBay
07.2021 - 06.2022
Computer Programming - Eng
Istanbul Aydin University