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Cem Levent User

@cemleventuser

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Full-stack developer building scalable web and backend systems with a focus on real-time features.

Turkey

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What I'm looking for

I seek a collaborative engineering role building scalable web or backend systems, with opportunities to work on real-time features, ML pipelines, and performance optimization.

I am a full-stack developer with hands-on experience building end-to-end web and backend systems using Node.js, Next.js, React, FastAPI, and relational and NoSQL databases. I have engineered booking and e-commerce systems, integrated secure payment gateways, and implemented real-time features with Socket.io and Kafka.

My work spans freelance projects, internships, and product development where I optimized platform performance (up to 70% speed improvements), automated supplier API synchronization, and developed modular microservices with Docker for reliable deployments. I also built ML-powered pipelines for anomaly detection using PyTorch and FastAPI.

I value clean, maintainable code, SOLID design, and collaborative team workflows; I deliver documented solutions that balance performance, security, and user experience.

Experience

Work history, roles, and key accomplishments

Full Stack Developer

Online Travel Agency Platform

Dec 2025 - Feb 2026 (2 months)

Engineered a comprehensive booking system with a custom admin panel managing 20+ modules, automated supplier data sync from 5+ APIs, and integrated ZiraatPay and YapiKredi 3D Secure payments while improving platform speed by up to 70%.

API Integration Caching MySQL Performance Optimization

Backend Developer

NDM Software

Jun 2025 - Dec 2025 (6 months)

Developed end-to-end backend for a mobile app using Node.js, Express and Supabase, implemented JWT authentication, CRON jobs, modular routing and Stripe payments, and enabled real-time features via Socket.io.

Node Express Supabase JWT Socket.IO Stripe REST APIs

Full Stack Developer Intern

ACD Data Engineering

Jul 2025 - Aug 2025 (1 month)

Contributed to a microservice-based customer support and ticketing system, implementing role-based access, real-time chat, task workflows and dynamic dashboards and preparing technical documentation for modular deployment.

React fastAPI MongoDB Kafka Docker Microservices Chat

Education

Degrees, certifications, and relevant coursework

Eskişehir Osmangazi University

Bachelor of Computer Engineering, Computer Engineering

2021 -

Grade: 2.95

Pursuing a Bachelor of Computer Engineering with coursework in Data Structures, Algorithms, Database Management Systems, Operating Systems, Object Oriented Programming, and Computer Networks.

University of Maribor

Bachelor of Computer Engineering (Erasmus+ exchange), Computer Engineering

2023 - 2024

Erasmus+ student exchange in the Bachelor of Computer Engineering program with coursework including Digital Logic Design, Fundamentals of Electronics, Software Engineering, and Media and Democracy.