COZ

Cihan ÖztürkSenior AI Developer

Systems thathold upunder pressure.

Over 8 years of experience in backend, cloud, and distributed systems — with several years of hands-on work in the public-defense sector (police, Germany's Federal Criminal Police Office (BKA), and others), ranging from automated vehicle fleets to monetization platforms in large enterprise environments.

Cihan Öztürk · Berlin/Brandenburg
Location

Berlin/Brandenburg —
remote-tested.

8+

Years of experience in software engineering — from large enterprises to research institutes.

AI

From fine-tuning to integration — artificial intelligence as a new focus alongside classic backend architecture.

Selected projects

Built to hold up.

Backend & AIsince 01/2026

API Platform for Geodata & AI Services

Development and operation of an API platform that provides geodata analytics and AI-powered detection services to internal and external partner systems — including role-based access control and API gateway operations.

  • Python
  • Go
  • FastAPI
  • gRPC
  • Kubernetes
  • Argo CD
  • Argo Workflows
  • OAuth2
Fullstacksince 05/2025

Modernization of a Police Case-Management Application

Ongoing development of a security-critical application for German federal authorities — backend in C#/.NET, GraphQL API with StrawberryShake for type-safe client integration.

  • C#
  • .NET
  • GraphQL
  • Docker
Backend & Frontend≥ 1 year

Fleet Management for Driverless Transport Vehicles

Ongoing development of a system for the automated orchestration of physical Automated Guided Vehicles — event-driven architecture with high reliability requirements.

  • Kotlin
  • Spring Boot
  • React
  • TypeScript
  • RabbitMQ
  • MongoDB
  • PostgreSQL
  • Kubernetes
  • AWS
Backend≥ 1.5 years

Monetization Platform

Ongoing development of monetization software in a large enterprise environment — cleanly tested services using Cucumber, Redis caching, and automated pipelines.

  • Kotlin
  • Spring Boot
  • PostgreSQL
  • Redis
  • Kubernetes
  • AWS
  • Jenkins
Backend1.5 years

Identity & Access Management System (P20 – BKA)

Built a SCIMv2-compliant IAM service as a multi-module system for Germany's Federal Criminal Police Office (BKA) — from initial architecture through to the CI/CD pipeline.

  • Java
  • Spring Boot
  • Docker
  • Kubernetes
  • GitLab CI/CD
Backend1.5 years

Vehicle Lease-Return Application

Ongoing development of an application for managing and processing the return of leased vehicles in a large enterprise environment.

  • Kotlin
  • Spring Boot
  • React
  • TypeScript
  • PostgreSQL
  • AWS
Frontend≥ 1 year

Progressive Web App for Goods Receiving

Development of a PWA for the goods-receiving process with AI integration to automate data capture.

  • Vue.js
  • JavaScript
  • Python
  • Azure
Backend1 year

Software for Liquidation Stock & Process Optimization

Ongoing development of in-house software for processing liquidation stock, including process optimization.

  • C#
  • .NET
  • MySQL
  • Web-API
  • Azure
Data & AI9 months

AI-Driven Product Season Detection

Trained an AI model for seasonal product identification to support optimized sales decisions — integrated into the existing application architecture.

  • Python
  • Jupyter
  • Machine Learning
  • Terraform
Data4 months

Geodata Analysis & Visualization

Software development for collecting, processing, and visualizing geo-coordinate data at DLR.

  • Python
  • PostgreSQL
  • PostGIS
  • Web-API

Core competencies

The spec sheet.

Backend
  • KotlinSpring Boot
  • JavaSpring Boot
  • GogRPC
  • C#.NET
  • Python
  • REST APIsFastAPI
  • GraphQLStrawberryShake
  • RabbitMQ
Frontend
  • TypeScriptReact / Next.js
  • JavaScriptVue.js
Cloud & Ops
  • Docker
  • KubernetesHelm
  • AWSEKS / Lambda / S3
  • Azure
  • CI/CDJenkins / GitLab CI/CD
  • Argo EcosystemArgo CD / Argo Workflows
  • Terraform
  • OAuth2
  • SCIM v2
  • API Gateways
Data
  • PostgreSQLPostGIS
  • MongoDB
  • MySQL
  • Redis
  • GeoJSON
  • STAC
Practices
  • Clean Code
  • Design Patterns
  • TestingJUnit / Cucumber
  • Scrum
AI & Data Science
  • PythonJupyter
  • Machine LearningNeural Networks

Career

Track record.

  1. 2026 — present

    Senior AI Developercurrent

    Telekom AG @ T-Systems

    Berlin
  2. 2024 — 2025

    Senior Software Engineer

    Telekom AG @ T-Systems

    Berlin
  3. 2021 — 2023

    Consultant

    MHP — A Porsche Company

    Berlin
  4. 05/2021 — 07/2021

    Fullstack Developer

    Tourbosoft GmbH

    Berlin
  5. 2020 — 2021

    Software Developer

    pb ReCommerce GmbH

    Berlin
  6. 2019 — 2020

    Data Analyst

    German Aerospace Center (DLR)

    Berlin
  7. 2018 — 2019

    Software Developer

    ebay — Brands4Friends

    Berlin