Sinan Teker

Software Developer · Istanbul / Ümraniye, Türkiye

I build loyalty and e-commerce systems with ASP.NET Core and React.

Open to new opportunities.

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About

Hi! I am Sinan Teker, a software developer working on both frontend and backend across loyalty, e-commerce and platform-based systems.

I develop with ASP.NET Core MVC, React and React Native, and build scalable architectures using Docker, Redis, RabbitMQ and Hangfire. Comfortable working in Scrum and Kanban teams.

Experience

Software Developer — Biggplus

February 2023 — Present · Istanbul, Beykoz

  • Support the development and maintenance of loyalty systems under BiggBrands.
  • Create SQL-based reporting views and integrate them into admin panels.
  • Develop order tracking and payment modules.
  • Enhanced the Notification API and integrated SMS/Email delivery via İYS.
  • Work with microservice architecture, async programming and queue systems; manage scheduled jobs with Hangfire.

Full Stack Developer — MayaICT

March 2022 — February 2023 · Istanbul, Üsküdar

  • Worked on frontend and backend development for the Kariyer Portalı and Cleopatra Ink projects.
  • Improved my frontend skills by converting Figma frames into functional web pages.
  • Worked with a microservice architecture; API communication and documentation were handled via Swagger.
  • Managed Docker images and published them via Portainer, gaining foundational DevOps skills.

Software Developer Intern — MayaICT

November 2021 — February 2022 · Istanbul, Üsküdar

  • Built a full-featured personnel management system (create, list, edit, delete).
  • Gained hands-on experience in MVC architecture, database integration and backend logic.

Software Developer Intern — Modaltrans

August 2021 — October 2021 · Istanbul, Maltepe

  • Worked on a payment infrastructure project using Ruby on Rails and the Stripe API.
  • Developed and tested customer/product management, subscription models, payment methods and invoicing.

Skills

Frameworks
  • ASP.NET Core
  • ASP.NET Core MVC
  • React
  • React Native
  • jQuery
  • Ruby on Rails
Languages
  • C#
  • JavaScript
  • SQL
  • Ruby
  • HTML
  • CSS
Databases
  • MSSQL
  • Redis
Tools
  • Docker
  • Portainer
  • RabbitMQ
  • Hangfire
  • Swagger
  • Git
Practices
  • Microservices
  • Async programming
  • Scrum
  • Kanban

Projects

Kariyer Portalı 2022 — 2023

Career network that helps businesses collaborate.

A career platform built on a microservice architecture. I joined mid-development.

I converted Figma frames into functional pages; API communication was handled via Swagger.

The project is currently inactive for internal reasons.

  • ASP.NET Core MVC
  • MSSQL
  • jQuery
  • AJAX
  • Docker

Site: kariyerportali.ticaret.edu.tr

Cleopatra Ink 2022 — 2023

Microservice-based corporate web project.

I joined as a frontend developer, handling UI revisions and improvements in the early stages.

Later I contributed to both frontend and backend development.

I managed the Docker images and handled deployment through Portainer.

  • ASP.NET Core MVC
  • MSSQL
  • JavaScript
  • jQuery
  • Docker

Site: cleopatraink.mayaict.com.tr

Personnel Management System 2021 — 2022

CRUD-based personnel management system.

A full-featured system built during my internship, supporting employee create/list/edit/delete operations.

It gave me hands-on experience with MVC architecture, database integration and layered design.

  • ASP.NET Core MVC
  • MSSQL

GitHub: github.com/Sinan-Teker/.Net-Core-MVC-MSSQL-Personel-Save-List-Update-Delete

Stripe Payment Integration 2021

Payment infrastructure with Ruby on Rails and the Stripe API.

A payment infrastructure covering customer and product management, pricing and subscription models, payment methods, tax rates and invoicing.

It taught me modern payment systems and API integration in a real financial context.

  • Ruby on Rails
  • Stripe API

GitHub: github.com/Sinan-Teker/stripe-integration-application-with-ruby-on-rails

Education

B.Sc. — Computer Engineering

Atatürk Üniversitesi · September 2013 — April 2024

Was in the top 10% in 2014 and finished the semester in 3rd place.

B.Sc. — Metallurgical and Materials Engineering

Karadeniz Teknik Üniversitesi · September 2010 — June 2013

Metallurgy and Materials Club — Clerk (2012 — 2013).

High School — Anatolian High School

Çayeli Vakıfbank Anadolu Lisesi · September 2005 — June 2009