About

Ersel Seyit

Open to work
Istanbul, TürkiyeErselSeyiterselseyit

Backend and DevOps engineer specializing in scalable microservices, cloud infrastructure, and production-grade distributed systems.

My flagship project is a solo-built telecom operations platform - 10 services, 19 pods on Kubernetes, 113K lines of code across 5 languages. This portfolio itself is a portfolio platform showcasing architecture deep-dives and live demos.

Download CV

Experience

Research Engineer @ UpcoMinds

Feb 2025 - Aug 2025

Brussels, Belgium

  • Designed parallel training system partitioning datasets across Kubernetes nodes, significantly reducing AI model training time
  • Designed and deployed RESTful API backend using Java, Spring Boot, and PostgreSQL on Kubernetes
  • Automated CI/CD pipeline with GitLab CI; secured API endpoints with Keycloak OAuth2 and RBAC

Freelance Software Developer @ Freelance

Apr 2024 - Dec 2024

Istanbul, Turkey (Remote)

  • Built cross-platform medical imaging app in Flutter with custom TensorFlow models, achieving 95% diagnosis accuracy across 10,000+ images
  • Developed financial planning app with Python backend, integrating OpenAI GPT API for natural language budget analysis

Software Developer @ Amani AI

Jul 2022 - Feb 2023

Istanbul, Turkey

  • Implemented OpenCV-based image processing to detect invalidated Turkish IDs, automating document fraud detection

Technical Skills

Languages

JavaPythonGoCTypeScriptSQL

Backend & Messaging

Spring Boot/CloudMicroservicesREST API DesignRabbitMQ

DevOps

KubernetesDockerCI/CDGitLab CIHelm

Databases

PostgreSQLMySQLPostGISMongoDBRedis

Monitoring

PrometheusGrafanaZipkinLoki

Security

KeycloakOAuth2JWTRBAC

Tools

GitLinuxMavenFlutterTensorFlow

Testing

JUnitMockitoIntegration Testing

Education

B.Sc. Computer Engineering

Yeditepe University, Istanbul · 2020 - 2024

Computer Programming

Ege University, Izmir · 2018 - 2020

Flagship Project - Base Station O&M Platform

Solo-built telecom operations platform with 10 microservices, 19 K8s pods, and 113K lines of code across Java, Python, Go, C, and TypeScript.

10
Services
19
K8s Pods
113K
Lines
5
Languages
View live demo