Skip to content
Eren Gaygusuz

Experiences

Resume-style overview of my professional background.

Summary

Senior Software Engineer with experience across enterprise web platforms, backend services, full-stack applications, Unity-based desktop/mobile products, integrations, and production delivery. Since graduating in Software Engineering in 2020, I have worked on systems used in finance operations, public-sector workflows, healthcare-oriented rehabilitation products, location-based mobile applications, and personal production-ready projects. My main goal is to build maintainable, secure, scalable, and user-focused software while continuously improving my architectural, DevOps, cloud, and AI engineering skills.

Work Experiences

APR 24 - MAR 25

Software Development Engineer

Yıldız Holding via ID3 Software and Information Technologies | Remote, Istanbul

Contributed to enterprise web platforms used within Yıldız Holding, especially Financial Operations Center systems.

  • Developed and maintained full-stack modules with Angular, React, ASP.NET Core Web API, SQL Server, Entity Framework Core, Dapper, Docker, Jenkins, and OpenShift.
  • Built and refactored user interfaces, web APIs, scheduled jobs, and integration flows for invoice tracking, resource management, and centralized email delivery systems.
  • Implemented XML and Excel import/export flows, PDF processing features, request/response encryption, permission-based authorization, and SOAP/REST service integrations through Ocean Middleware.
  • Supported UAT and production releases on on-premise CentOS environments using Docker, Jenkins pipelines, GitLab, and Agile sprint workflows.
  • Interviewed intern engineer candidates, supported intern onboarding, and helped the team resolve Git branch conflicts during delivery cycles.

OCT 23 - DEC 23

Software Development Engineer

T.C. Ministry of Industry and Technology via SBI Bilişim | On-site, Ankara

Worked in the ministry's IT department on public-sector web platforms for investment support, metrology, charging infrastructure, public IT authorization, and Türkiye Tech Visa processes.

  • Developed ASP.NET Core MVC and ASP.NET Zero based web applications with SQL Server, Entity Framework Core, Bootstrap, jQuery, Kendo UI, Azure DevOps, and Git.
  • Designed database structures, implemented Code First migrations, and developed data-driven screens for public institution workflows.
  • Integrated investment support processes with the ETUYS REST API and contributed to e-signature, e-government, SOAP, and REST integration flows where required by project scope.
  • Reviewed vulnerability reports, fixed security findings, and resolved responsive UI issues on production-facing public portals.
  • Collaborated with analysts and senior developers through Azure DevOps task tracking and Git-based version control.

SEP 21 - DEC 22

Software Development Engineer

Eyesoft Bilişim | On-site, Ankara

Worked at the company's METU Technopolis office on backend services, Unity-based mobile applications, desktop tools, and health-focused game modules.

  • Designed and developed Loktos Mobile backend services with ASP.NET Core Web API, MySQL, Entity Framework Core, Dapper, JWT, Docker, Postman, and AWS services.
  • Built Unity mobile applications using OpenStreetMap, GPS-based interactions, QR code flows, multilingual content, and secure API communication.
  • Developed Loktos Builder, a desktop tool that packaged location-based Unity applications by managing MySQL data, AWS S3 storage, asynchronous operations, and Unity CLI processes.
  • Implemented the TÜBİTAK-supported Gözcü Unity desktop game module with Tobii Eye Tracker integration for doctor-approved eye exercise workflows.
  • Set up GitLab CE and Slack integrations for internal version control and team communication while managing repositories and release-related documentation.

FEB 21 - MAR 21

Software Development Engineer

Bimcrone Technology | Hybrid, Ankara

Supported Bimcrone, a cloud-based digital twin desktop application for construction project tracking and management.

  • Developed Unity-based user interface modules for the desktop application.
  • Implemented compression and extraction flows for files transferred to and from Firebase services.
  • Prepared installer packages with Inno Setup Compiler for desktop distribution.
  • Signed setup packages with a Comodo code signing certificate and supported release preparation.

FEB 20 - OCT 20

Software Development Engineer

Sigun Information Technologies | Hybrid, Ankara

Developed Omni Assist, a TÜBİTAK-supported gamified rehabilitation desktop application for patients with hand and arm movement limitations.

  • Analyzed patient needs with input from TÜBİTAK reviewers, doctors, and company stakeholders.
  • Designed exercise flows and created Unity desktop games based on rehabilitation scenarios.
  • Integrated wearable rehabilitation hardware through RS-232 serial port communication and processed byte-array movement data in gameplay.
  • Used C#, Unity, JSON, GitLab, Postman, and multithreaded communication flows to transfer rehabilitation data to backend systems.

JUL 19 - JAN 20

Intern Software Engineer / COOP Software Engineer

Akgün Technology | Full-time, Ankara

Completed the second mandatory university internship and then worked full-time through Atılım University's COOP Education Program while developing the graduation project.

  • Developed Akgün Anatomy, a WebGL-based application for defining pressure wounds on a 3D human anatomy model.
  • Prepared the Software Requirements Specification document and supported requirement analysis.
  • Integrated the application with the Akgün IVital system.
  • Used C#, Unity, WebGL, HTML5, CSS3, JavaScript, 3ds Max, GitLab, Visual Studio Code, and Draw.io.

OCT 18 - MAY 19

Librarian

Atılım University | Part-time, Ankara

Worked part-time on weekends at Atılım University Library during undergraduate education.

  • Supported library operations while continuing software engineering studies.

AUG 18 - SEP 18

Intern Software Engineer

Genex Software A.Ş. | Full-time, İstanbul

Completed the first mandatory university internship with a focus on Redis research and desktop prototyping.

  • Researched Redis and prepared internal technical documentation for the company.
  • Developed a C# desktop prototype using Redis Pub/Sub and StackExchange.Redis.
  • Used .NET Framework, Visual Studio, Redis messaging concepts, and desktop application development practices.

Education

Academic Background

APR 22 - JAN 23

Computer Engineering

Gazi University | Master's Degree | Left

SEP 21 - FEB 22

Information Technologies

Ege University | Master's Degree | Left

SEP 16 - JAN 20

Software Engineering

Atılım University | Bachelor's Degree | GPA: 3.34 / 4.00

  • Faculty of Engineering, Software Engineering Department.
  • Relevant foundations: object-oriented analysis and design, database design, software architectures, and data structures.

SEP 15 - JUN 16

Graphic Design

Hacettepe University | Bachelor's Degree | Left

SEP 13 - JUN 15

Computer Education and Instructional Technologies

Hacettepe University | Bachelor's Degree | Left

SEP 11 - JUL 13

Photography and Camerawork

Anadolu University | Associate Degree | GPA: 2.36 / 4.00

  • Completed associate degree education.

SEP 08 - JUN 11

Science Track

Iğdır High School | High School | Grade: 73.13 / 100

  • High school education in the science track.

SEP 07 - JUL 08

Science Track

T.E.B. Ataşehir High School | High School | Left

Awards & Achievements

SPRING 19

Honor Student

Atılım University | 2018-2019 Spring Semester

FALL 18

Honor Student

Atılım University | 2018-2019 Fall Semester

SPRING 18

Honor Student

Atılım University | 2017-2018 Spring Semester

FALL 17

High Honor Student

Atılım University | 2017-2018 Fall Semester

FALL 14

Certificate of Appreciation

Hacettepe University | ÜNİ101 Introduction to University Life

SPRING 14

Basketball Tournament Champion

Hacettepe University | 34th Sports Festival

Exam Scores