Available for opportunities in EU

Marko Keser

Software Developer (Backend & AI Integration Specialist)

Building scalable backend systems with real world production experience and AI integrations

markokeser.dev@gmail.com +381 63 218039 keser.dev
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01.

About Me

I'm a backend-focused software developer with hands-on experience building production-ready applications. My flagship project is a Restaurant Management System currently deployed and used by real restaurants — a full-stack solution I architected from the ground up.

I specialize in C#/.NET ecosystems, having worked on enterprise-grade backend systems, complex mathematical models for gaming platforms, and integrating AI capabilities through API orchestration.

My experience includes production support, feature development, and working within established codebases — skills that translate directly to contributing effectively in established engineering teams across the EU.

Location

Serbia, EU

Status

Open to opportunities

Languages

English (Fluent), Serbian (Native)

02.

Technical Skills

Languages

C# Java JavaScript TypeScript SQL

Frameworks

.NET ASP.NET Core React Node.js Entity Framework

Databases

MySQL SQL Server PostgreSQL Redis

AI & Architecture

AI API Integration Prompt Engineering Response Validation REST APIs Clean Architecture
03.

Experience

Backend / Math Developer

Wicked Games

2023 — Present
  • Developed and maintained backend game logic using C# within established codebases
  • Implemented complex mathematical models for game mechanics and probability calculations
  • Collaborated with cross-functional teams to deliver features meeting strict regulatory requirements

Backend Developer

Quadro Consulting

2022 — 2023
  • Provided production support for enterprise Java and C# applications
  • Debugged and resolved production issues under tight SLAs
  • Gained experience working with legacy systems and gradual modernization efforts

Software Engineering Intern

Salesforce

2021
  • Contributed to internal tooling and automation projects at a global enterprise scale
  • Learned industry best practices for code review, testing, and CI/CD workflows
04.

Featured Project

🔴 Live in Production

Restaurant Management System

Currently in use by restaurants

A full-featured web application for restaurant operations — built entirely from scratch and deployed to production. Real restaurants are using this system daily to manage their operations.

Key Features

  • ▹ Complete backend architecture with ASP.NET Core
  • ▹ Role-based authentication & authorization system
  • ▹ Real-time order management and tracking
  • ▹ Inventory and menu management modules
  • ▹ AI-powered features via API integration

Technical Highlights

  • ▹ Clean architecture with layered separation
  • ▹ Entity Framework Core with MySQL database
  • ▹ JWT-based authentication system
  • ▹ React frontend with responsive design
  • ▹ Deployed on cloud infrastructure

Tech Stack

C# ASP.NET Core Entity Framework MySQL React JWT Auth AI APIs
View on GitHub View Live Demo
05.

Get In Touch

I'm currently looking for backend and AI-focused opportunities in the EU. Whether you have a position to discuss or just want to connect, I'd love to hear from you.

markokeser.dev@gmail.com +381 63 218039