Description

Are you looking for a senior backend engineer to build, improve, or troubleshoot a reliable software system?

I specialize in backend development with Python, Django, FastAPI, and C#/.NET. I can help you develop REST APIs, modernize existing applications, integrate external services, improve database performance, and solve production or deployment issues.

I have hands-on experience with PostgreSQL, Redis, Celery, Docker, Kubernetes, AWS, Google Cloud, CI/CD pipelines, and high-availability systems. My focus is not only on writing code, but also on creating maintainable, scalable, and production-ready solutions.

I can support you with:

Backend and API development
Django and FastAPI applications

C#/.NET backend services
Database and performance optimization
Cloud infrastructure and deployments
Technical reviews and architectural improvements
Debugging complex production issues

I am particularly interested in clearly scoped projects, technical audits, integrations, and part-time backend assignments. I communicate clearly, work independently, and focus on delivering practical results.

Industry field of expertise

Languages

Turkish
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Coolblue
Senior Backend Developer, Route Planning & Optimization, CoolblueDelivers Domain
RETAIL (LARGE RETAILERS)
March 2022 - Today (4 years and 5 months)
Rotterdam, Netherlands
• • Design, develop, deploy, and maintain high-load backend services for route planning and optimization systems.
• • Build and operate backend applications using Python, Django, FastAPI, C#, .NET, PostgreSQL, Redis, Docker, Kubernetes, Fargate, AWS, and GCP.
• • Integrate internal and external APIs across the delivery domain.
• • Work with large-scale OpenStreetMap-based geospatial datasets using PostgreSQL/PostGIS, including data processing, updates, validation, deployment, and automation.
• • Contribute to map management workflows that support operational needs and ensure reliable map data for route planning and optimization services.
• • Improve CI/CD workflows using TeamCity and support reliable cloud-native deployment processes.
• • Collaborate with product, operations, and engineering stakeholders to improve reliability, scalability, and maintainability.
• • Mentor junior and mid-level developers through code reviews, technical guidance, and knowledge sharing.
Kubernetes Python AWS .NET C# Django Rest Framework
Huawei
Full-Stack Developer, Integration Solution Department
TELECOMMUNICATIONS
March 2021 - March 2022 (1 year)
İstanbul, Türkiye
• • Designed and developed backend services using Python/Django and frontend applications using ReactJS.
• • Built API services and integration tooling with Celery, Redis, PostgreSQL, and Docker.
• • Deployed services through CI/CD pipelines on Huawei Cloud.
• • Contributed to microservice components using Java Spring Boot, gateway services, and Keycloak.
• • Coached and mentored junior team members through implementation support and code reviews.
Python Django Rest Framework Celery Cloud React.js
Rovenma Smart Technology
Software Engineer, Software Development Department
DEFENSE AND MILITARY
December 2019 - March 2021 (1 year and 3 months)
Ankara, Türkiye
• • Developed backend services using Python/Django for smart technology systems.
• • Implemented communication with remote devices using Python cryptography and SSL libraries.
• • Built command-line tools using serial communication for device interaction and operational workflows.
• • Developed and implemented tailored cryptographic components for secure device communication.
Python Django Rest Framework Celery Kubernetes Cryptography