# Oğuzhan Gündüz

Canonical website: https://www.oguzhangunduz.com/
Contact: contact@oguzhangunduz.com
GitHub: https://github.com/Ulwus
LinkedIn: https://www.linkedin.com/in/ulwus

Oğuzhan Gündüz is a Software Engineering student focused on cloud operations,
virtualization, infrastructure automation and backend engineering.

## Current role
Turkcell GNÇYTNK — Cloud Services Operations, part-time.
Work includes cluster and virtual-server management, resource-utilization tracking,
capacity planning, performance monitoring, VM provisioning/lifecycle support and
L2/L3 troubleshooting across Linux, Windows Server, networking and virtualization.

## Experience
- İSBAK — Systems & Virtualization Infrastructure
- TÜBİTAK SAGE — Embedded Systems / Guidance Kits Laboratory

## Selected projects
### Penkrowd
Serverless backend with Firebase Cloud Functions, JWT, OAuth2 and rate limiting.
Data modelling and NoSQL query optimisation reduced cloud operating cost by 25%.
The project received a first-place Google Technology Academy award.

### DasDas
Next.js / Firestore CMS optimisation. Runtime rendering was moved to SSG and build-time
caching, reducing cost by 60% and making page loads 3x faster.

### Internview
Mock-interview platform with Spring Boot, Spring Cloud Gateway, PostgreSQL, Redis,
Apache Kafka, WebRTC, Mediasoup, Coturn, Flutter, Next.js, Whisper and LLM analysis.
Repository: https://github.com/Ulwus/Internview

### AWS High-Availability Architecture
Multi-AZ VPC design with Auto Scaling, Load Balancing, EFS, AWS Backup and WAF.

### TripMind
AWS VPC design with public/private subnets, Nginx reverse proxy and OpenVPN admin access.

## Education
- Fırat University — B.Sc. Software Engineering, GPA 3.70
- Istanbul University — A.S. Computer Programming, GPA 3.31, completed

## Technical stack
VMware ESXi/vCenter, AWS, Linux, Windows Server, Docker, Kubernetes, Terraform,
Nginx, Python, Java, C#, TypeScript, SQL, Dart, Spring Boot, .NET, Next.js, Django,
React, Flutter, PostgreSQL, MySQL, Firestore, Redis and Apache Kafka.

## Engineering articles

These educational articles use illustrative examples and link to official documentation.
- [AWS High Availability: Design for Failure, Then Test It](https://www.oguzhangunduz.com/blog/aws-high-availability/): Design an AWS application across two Availability Zones, handle database failover, plan spare capacity and verify recovery with controlled failure drills.
- [Practical FinOps: Measure Cloud Cost per Useful Outcome](https://www.oguzhangunduz.com/blog/finops-unit-economics/): Build a FinOps workflow around unit cost, ownership and measured experiments. Reduce cloud waste while protecting latency, reliability and useful work.
- [OpenTelemetry Observability: From Signals to Useful SLOs](https://www.oguzhangunduz.com/blog/opentelemetry-observability/): Connect metrics, traces and logs with OpenTelemetry, define user-focused SLOs and build an incident investigation path with bounded telemetry costs.
- [Spring Boot and Redis Caching: Correctness Before Speed](https://www.oguzhangunduz.com/blog/spring-boot-redis-caching/): Design Spring Boot Redis caching with explicit keys, TTLs, invalidation and outage handling. Explore stale-read races and practical verification cases.
- [Safer LLM Kubernetes Automation with Deterministic Guardrails](https://www.oguzhangunduz.com/blog/llm-kubernetes-automation/): Design an LLM Kubernetes assistant with constrained intent extraction, policy checks, dry runs, precise approval and least-privilege execution.