Yusuf GÜNER

Languages & Backend

C#
.NET
Web API
TypeScript
Python
Java
SQL

Frontend & Mobile

React
Next.js
React Native
Expo
Angular
Tailwind
HTML5 & CSS

Data & Tools

SQL Server
PostgreSQL
Supabase
Firebase
Git
Postman
Jira

AI

Claude Code
Codex
AI Agents
Prompting
Vibe Coding

Years of experience

+20

Projects completed

Mobile games & apps

I'm a computer engineer who turns ideas into clean, fast and enjoyable digital products.

I build desktop, web and mobile applications in the C# and .NET ecosystem. Over two years at NarPOS, from intern to technical support team lead, I built multi-layer automation software, SQL Server databases and Angular interfaces. Today I build mobile games with React Native, and websites and SaaS products with Next.js. Before that, I taught C#, SQL and robotics as an IT teacher for 1.5 terms.

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The languages, frameworks and tools I use every day.

C#C#

.NET

TypeScript

JavaScript

Python

Java

HTML5

CSS

SQLSQL Server

PostgreSQL

AMS Access

Supabase

Firebase

Redis

Elasticsearch

Docker

React

Next.js

React Native

Expo

Angular

Tailwind CSS

Vercel

Git

GitHub

Postman

Jira

VSVisual Studio

VSCVS Code

Android Studio

Arduino

Claude Code

Codex

(01)

Computer Engineer

Aug 2026 – Present

LinerasoftAug 2026 – Present

Corporate websites, web and mobile apps with AI-assisted development; end-to-end delivery from analysis to release, SEO and performance.

(02)

Technical Assistant Team Lead

Sep 2025 – Jul 2026

NarPOSSep 2025 – Jul 2026

Led the technical support team; LVL3 support, log analysis, integration setup, network configuration and API validation with Postman.

(03)

Technical Support Specialist

Jan 2025 – Sep 2025

NarPOSJan 2025 – Sep 2025

Ticket and planning tracking with Jira, POS setup and updates, database operations and system integrations.

(04)

Jr. Software Developer

Sep 2024 – Jan 2025

NarPOSSep 2024 – Jan 2025

Multi-layer automation in C#, SQL Server design and tuning, Angular SPAs and RESTful services with C# Web API.

(05)

Software Intern

Jul 2024 – Sep 2024

NarPOSJul 2024 – Sep 2024

Desktop app maintenance and testing, Android and iOS version updates, Git version control and code reviews.

(06)

Freelance Developer

2021 – 2025

Freelance2021 – 2025

Websites, automation systems and apps for individuals and businesses.

(07)

Software Intern

Jun 2023 – Sep 2023

BukyTalkJun 2023 – Sep 2023

Mobile app and UI development; Agile experience in a Scrum and Kanban team.

(08)

IT Teacher

Sep 2021 – May 2023

Avcılar Firuzköy MTALSep 2021 – May 2023

Taught C# programming, SQL and database management, robotics (mBlock5, Arduino) and visual design.

(09)

IT Intern

Sep 2018 – Apr 2019

Ateşsan Ambalaj A.Ş.Sep 2018 – Apr 2019

Hardware support, network monitoring and server data backups.

İstanbul Esenyurt Üniversitesi

Computer Engineering, BSc

2023 – 2026

Kırklareli Üniversitesi

Software Engineering

2022 – 2023

Kırklareli Üniversitesi

Computer Programming, Associate

2019 – 2021

Avcılar Firuzköy MTAL

IT & Computer Department

2015 – 2019

Volunteering

Women Techmakers Turkey

Organizing Team · 2022 – 2023

KLU Blockchain Kulübü

Member · 2022 – 2023

Languages

TurkishNative

EnglishB1

From enterprise B2B systems to desktop automation, projects I built with C# and .NET.

B2B

Featured

B2B Ordering System

A multi-tenant B2B platform where dealers place their own orders, with tenant isolation, role-based access, ordering rules and an admin panel with live order tracking.

JWT + role-based accessTenant isolationCart & ordering rulesSignalR live orders~11 ms search over 30,000 productsElasticsearch + Redis cache

.NET 9 Web API · EF Core · SQL Server · Elasticsearch · Redis · SignalR · React