Kubilay Birer - Software Developer
Kubilay Birer
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Kubilay Birer

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.NET
Flutter
C#
SQL
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About Me

I am a motivated and practical-minded Backend & Mobile Developer who thrives in collaborative and dynamic environments. With valuable project experience and a passion for continuous self-improvement, I quickly adapt, take responsibility, and support my team. I value teamwork, clear communication, and a positive attitude, aiming to grow into a reliable and productive part of any organization.

Currently, as a Backend & Mobile Developer at Calgra Group , I am focusing on the development of the Scorpii Score Mobile App platform, building innovative features and enhancing user experience while contributing to the company's technological advancement.

Skills

.NET logo C# logo Entity Framework Core logo MySQL logo Microsoft SQL Server logo
Backend Development

.NET Core, Entity Framework Core, REST API, MSSQL, MySQL, SignalR, Stripe

I began my software development journey with C# and have been actively using it since day one. Because I learned core programming principles (OOP, SOLID, layered architecture) through real C# projects, my expertise in the language is strong. I've built advanced backends, from MVC applications during internships to architecting and developing the entire Scorpii Score backend at Calgra Group. I have extensive experience with both MySQL and MSSQL, designing relational databases, applying Code First and Database First approaches, managing schemas, and performing administration tasks such as permissions and backups. My database and backend experience come directly from building production-grade systems.
85%
Flutter logo Dart logo HTML5 logo CSS3 logo JavaScript logo Bootstrap logo
Mobile & Frontend

Flutter, Dart, HTML, CSS, JavaScript, Bootstrap

Initially, I worked almost exclusively on backend systems, but later in my internships and at Calgra Group, I took on full-stack roles. I developed responsive MVC web applications and built most of the Scorpii Score mobile UI in Flutter (state management, navigation, theming, API integration). I'm proficient in HTML, Bootstrap, CSS, and JavaScript, and have also integrated advanced 3D JavaScript libraries like Three.js and Spline to enhance visual quality. My approach balances functionality with polished design and user experience.
75%
Git logo GitHub logo Jira logo
Version Control & Tools

Git, GitHub, JIRA, CI/CD

I have used Git and GitHub since the start of my career—progressing from simple commits to advanced workflows. I'm comfortable with branching strategies, merge/rebase, pull requests, permissions, and protected branches. In my latest projects, I implemented GitHub-based CI/CD pipelines to automatically build, test, and deploy to production servers. This setup included automated checks, environment secrets, and safe rollback strategies. I integrate Git with JIRA to maintain full traceability between tasks and code changes.
80%
Soft Skills

Practical intelligence, solution-oriented, fast learner, adaptable, team player, detail-oriented, time management

I've proven my soft skills in internships, university projects, and my role at Calgra Group. The rise of AI tools has amplified my strengths in problem-solving and practical thinking—allowing me to deliver advanced results even in unfamiliar tech stacks. I can quickly adapt to new technologies thanks to strong software development fundamentals. For example, I built a full-stack bus ticket reservation system in just two months using PHP & CodeIgniter 4 after learning PHP from scratch—demonstrating both rapid learning and adaptability.
70%
Docker logo AWS logo Firebase logo Vercel logo
Cloud & DevOps

Docker, AWS, CI/CD Concepts, Firebase, Vercel

My DevOps experience began with deploying full-stack and static projects to GitHub Pages and Vercel. Later, I participated in a selective, government-supported AWS training led by Hakan Hilmi Kapucu (CEO of LimonCloud). This program was entirely hands-on, covering AWS Console, AWS Pricing Calculator, and real-world architecture diagrams. I provisioned and configured EC2 instances, S3 buckets, IAM roles, and VPC fundamentals. I also worked on budgeting and scalability trade-offs, gaining practical AWS and cloud computing experience.
60%
Python logo Django logo FastAPI logo PHP logo CodeIgniter logo Kotlin logo
Other Frameworks & Languages

Python, Django, FastAPI, PHP, CodeIgniter, Kotlin

I’ve used these technologies in university projects, hackathons, and personal builds. Examples include Python for automation and Quantum ML research (Qiskit, PennyLane), Django/FastAPI for quick REST APIs, PHP/CodeIgniter for a ticket booking platform, and Kotlin for the SmartNavigation accessibility app. While these are not my primary stacks, I can design features, debug effectively, and follow good structure. With focused time, I can quickly reach an advanced level in any of them.
50%

Projects

⚽
Scorpii Score

Social Football Prediction Platform – Lead Developer (Backend & Mobile). Users create profiles, connect with friends, and participate in football-related content and tournaments. Built with .NET Core, MySQL, and Flutter. Publicly available on Google Play and App Store.

.NET Core Flutter MySQL
Web Site Play Store
🧑‍🔬
Quantum Machine Learning Research

Academic research project focusing on Quantum Machine Learning (QML) principles and real-world applications. Used IBM Qiskit and PennyLane for hybrid simulations. Submitted to TÜBİTAK.

Qiskit PennyLane Python
🚌
Bus Ticket Web Application

Developed a bus ticket reservation system with interactive seat map, secure Stripe payments, and Google Maps API integration. Built with CodeIgniter 4, PHP, HTML5, CSS, JavaScript, and Docker.

CodeIgniter 4 Stripe Docker
GitHub
🦮
SmartNavigation App

Android app for visually and hearing impaired users to navigate to bus stops using voice commands and real-time directions. Built with Kotlin, Android Speech Recognition, and Google Maps API.

Kotlin Android Google Maps API
GitHub

Professional Experience

Calgra Group

Edinburgh, UK Remote
Backend & Mobile Developer
01/2025 – Present Current Promoted
Full-time
  • Led the development of the Scorpii Score mobile application (Flutter) and backend (.NET Core, MSSQL).
  • Implemented match predictions, user scoring, push notifications, payment integration, live scores, social features, and real-time messaging.
  • Designed and optimized database architecture, improving application performance and handling growing user base effectively.
.NET Flutter REST API MySQL Jira Firebase SignalR Stripe
Backend & Mobile Developer Intern
08/2024 – 01/2025 Started Here
Internship
  • Designed and developed comprehensive APIs using .NET Core and EF Core for web and mobile apps.
  • Built mobile apps with Flutter, consuming the API for seamless interaction.
  • Led Scrum meetings and Sprint Planning as Scrum Master, using Jira for task management and team workflow optimization.
.NET Flutter REST API MySQL Jira Firebase SignalR Stripe

Prometeon Tyre Group

Kocaeli, Türkiye
Full Stack Web Developer Intern
07/2023 – 09/2023 Returned
Internship
  • Developed a Full Stack Intern Register Web App with admin dashboard for 100+ interns.
  • Developed a Full Stack Magazine Web App for publishing company magazines.
  • Collaborated with cross-functional teams to deliver high-quality web solutions and enhanced user experience.
.NET MSSQL Git HTML CSS JS Bootstrap
Data Analyst Intern
07/2022 – 09/2022 First Experience
Internship
  • Managed factory database using Dremio, FactoryTalk, and MSSQL (~10,000 entries daily).
  • Used SQL, Grafana, and Python to visualize data, improving accuracy by ~30%.
  • Worked on machine monitoring systems for real-time data collection and anomaly detection, improving query speeds by up to ~50%.
Dremio Grafana MSSQL Git Python

Education

Kocaeli University

Kocaeli, Türkiye
BSc in Information Systems Engineering
09/2021 – 06/2025 Graduated
Bachelor's Degree
  • Graduated with honors, GPA: 3.46
  • Academic and extracurricular projects: automation, cloud computing, AI
  • AI advisor in interdisciplinary thesis (psychology & AI)
  • Led graduation project on quantum machine learning (TÜBİTAK submission)
Information Systems Software Engineering AI & ML Database Systems Project Management

24 Kasım Anadolu Lisesi

Kocaeli, Türkiye
High School Diploma
09/2015 – 06/2019
High School
  • Team captain of football team, 1st place in Nike-sponsored tournament
  • 1st place in Spelling Bee contest
  • Volunteer activities: nursing homes, disability workshops, children's shelters
Leadership Team Sports Language Skills Community Service Social Responsibility

Certificates

Advanced Web Development

Advanced Algorithms and Data Structures

App Development with C#

Version Controls with Git and GitHub

Advanced Python Programming

Network Fundamentals

Web Development with Django

Fundamentals of Kotlin for Mobile Development

Interests

Playing football
Spearfishing
Reading history
Sports analysis
Bodybuilding & fitness
Sports history
Photography
Watching TV series

Contact

Feel free to reach out for collaboration or just to say hi!

A detailed CV can be provided upon request for professional opportunities.

kubilaybirer@hotmail.com

kubicix

Kocaeli, Türkiye

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