Eyüp KemalKaraoğlu

Enco Lojistik · İstanbul

• Node.js
• C#
• Next.js
• Flutter
• TypeScript
• PostgreSQL
• MariaDB
• REST

• Hazelnut production and pricing systemproduction (roasting, grinding, puree, praline, packaging), contracts, lot matching, sales targets and CRM in a single Go service on PostgreSQL, with JWT and email two-factor authentication, live updates over server-sent events, PDF contract output and an in-product assistant on Claude wired to the live tables. Its pricing model replaced the spreadsheet it grew out of: parameters versioned by validity date, quotes frozen with their inputs at calculation time, and the calculation unit-tested against the original Excel so the two provably agree.
• Fleet maintenance, mobilea cross-platform Flutter application that moved vehicle maintenance and technical service off paper, integrated with Movetech ERP over REST so inventory and work orders stay in sync automatically.
• Movetech ERP developmentfeature work inside the ERP the fleet actually runs on, rather than around it.
• Driver integration over WhatsAppreaching drivers on the app they already use, instead of asking a fleet to adopt a new one.
• AI assistanta retrieval-augmented chatbot with a pipeline that ingests corporate documentation into a vector store so answers are grounded in what the company actually wrote down.
• Backend & database designscalable services in Node.js and C#, with PostgreSQL and MariaDB schemas and queries tuned against real performance requirements.
• Ownershipsole responsibility for digital transformation across the group and its subsidiaries, covering the full lifecycle of every internal web and mobile application.

ft_transcendence

• Django
• DRF
• WebSockets
• JavaScript
• PostgreSQL
• Docker Compose

• A full-stack Pong platform with JWT-based two-factor authentication and secure account management.
• A REST API in Django REST Framework, with WebSockets carrying low-latency game state and live chat.
• Docker Compose for the whole stack, so development and production ran the same environment.
• PostgreSQL tuned for the stateful side of the product: profiles, match history and global rankings.

ft_irc

• C++
• BSD sockets
• Multithreading

• An IRC server written from scratch, speaking the protocol well enough for real HexChat clients to connect.
• Command handling, message routing between users and channels, and the socket programming underneath it.
• Real-time parsing and threading logic, where the hard part is what happens when input arrives half-formed.

Kubernetes track

• K3s
• ArgoCD
• Vagrant
• Helm
• Nginx

• A multi-node K3s cluster provisioned with Vagrant, with separate control planes and workers to mirror a production distributed environment.
• A GitOps pipeline through ArgoCD: deployment and synchronisation between GitHub manifests and the cluster fully automated.
• Nginx Ingress controllers configured for traffic routing, SSL termination and external access to containerised services.
• Modular Helm charts and Kubernetes manifests, so deployments are standardised and the infrastructure state stays declarative.