Buğra Gökçek

DevOps, SRE & System Specialist

I build, run, and harden production Kubernetes platforms — from bare-metal hypervisors up to release pipelines. Currently working remotely with Alpata Yazılım ve Teknoloji and OCTAPULL.

Download CV Get in touch

Ankara, Türkiye · Remote github linkedin

01 / About

About

I'm a DevOps, SRE & system specialist working remotely from Türkiye, currently at Alpata Yazılım ve Teknoloji and OCTAPULL. My day-to-day focus is running reliable Kubernetes workloads in production — operating multi-tenant clusters, authoring Helm-based deployments, designing CI/CD pipelines (recent work: GitLab CI → GitHub Actions migrations with self-hosted runners backed by a private Nexus registry), and stabilizing real-time media infrastructure (SFU/TURN, HAProxy, nginx, Redis Sentinel) under live traffic.

I also work hands-on at the hypervisor and bare-metal layer. Greenfield on-premises rollouts on Proxmox and VMware vSphere — full lifecycle from rack-up and provisioning, OS installation (Linux and Windows), network and firewall configuration, TLS/certificate management, observability (Prometheus, Grafana, Graylog), and backup/DR with Ceph. Comfortable owning the stack end-to-end: Kubernetes on top, Linux/Windows VMs in the middle, hypervisors at the bottom.

Day-to-day stack: Kubernetes, Helm, Docker, GitHub Actions, GitLab CI, Nexus, Proxmox, VMware vSphere, Ceph, Linux administration, and hybrid AWS + on-prem. Linux Foundation CKAD (Certified Kubernetes Application Developer, 85%) holder.

I care about systems that stay healthy on their own. When something does break, I dig to the root cause — not just until the alert clears.

02 / What I do

What I do

Hypervisor & On-Prem Infrastructure

Greenfield rollouts on Proxmox and VMware vSphere — VM provisioning, OS install (Linux, Windows), networking, firewall, TLS/certs, capacity planning, lifecycle.
Kubernetes Platform

Production cluster operations — Helm charts, ingress, configmaps, secrets, persistent storage, rolling releases. Docker Compose where it fits.
CI/CD & Release Engineering

GitHub Actions, GitLab CI, self-hosted runners, Nexus private registry. Image build, sign, push and Kubernetes deploy flows. GitLab → GitHub Actions migrations.
Reliability & Observability

Prometheus, Grafana, Graylog. Production incident response — debugging to the root cause, not until the alert clears. Real-time media hardening (SFU, TURN, HAProxy, Redis Sentinel).

03 / Experience

Experience

DevOps & System Specialist

Alpata Yazılım ve Teknoloji

Nov 2025 – Present · Eskişehir, Turkey · Remote
End-to-end responsibility for multi-tenant production infrastructure across on-premises and hybrid cloud environments. Day-to-day work spans the full stack:
- Hypervisor & bare-metal: Proxmox and VMware vSphere — VM provisioning, OS installation (Linux and Windows), networking, firewall and TLS configuration, sizing and capacity planning.
- Kubernetes platform: operating production clusters, authoring and maintaining Helm charts, managing ingress, configmaps, secrets, persistent storage, and rolling releases. Also running Docker Compose workloads where appropriate.
- CI/CD: designed and migrated pipelines from GitLab CI to GitHub Actions with self-hosted runners and a private Nexus registry; image build, signing, push and Kubernetes deploy flows.
- Storage & data ops: Ceph cluster deployment and operation, cross-cluster database synchronization pipelines (MSSQL), image registry replication, VM-level and cloud backup with retention.
- Reliability & debugging: production incident response on identity/OAuth flows, 502 startup failures, SMTP delivery issues, and certificate edge cases. Real-time media stack hardening (SFU, TURN/coturn, HAProxy → nginx fronting, Redis Sentinel) under live traffic.
- Observability: Prometheus, Grafana and Graylog plumbing for production logs and metrics.
DevOps & System Specialist

OCTAPULL

Nov 2025 – Present · Eskişehir, Turkey · Remote

Production operations and platform engineering for OctaMeet (real-time video conferencing) and OctaPull SFA (mobile field-sales) deployed on Kubernetes. Owning the release cycle, observability, load-balancing (nginx, HAProxy) and TLS/certificate lifecycle. Hardening the real-time media path (SFU, TURN, Redis Sentinel) and the cluster ingress layer for stability under live traffic. Working across multiple environments with cross-cluster image and data flows.
DevOps & System Specialist

Kloudser

Jan 2025 – Nov 2025 · 11 months · Ankara, Turkey · On-site

Worked across DevOps engineering and system administration, building hybrid infrastructure on on-prem, hybrid, and AWS environments. Administered Proxmox virtualization, Linux (Ubuntu, Debian, Kali) and Windows VMs, NAS storage and physical servers, OPNsense firewalls.

Designed and deployed scalable architectures on AWS (EC2, S3, IAM, DynamoDB, SQS, Lambda, API Gateway, Cognito). Set up GitLab CI/CD pipelines, self-hosted runners, Nexus Repository Manager. Containerized workloads with Docker, Docker Compose, Kubernetes. Worked with Android Cuttlefish emulator + MITMProxy for traffic analysis. MinIO and Keycloak as on-prem S3/IAM equivalents.
DevOps & System Specialist

OCTAPULL

Jul 2024 – Jan 2025 · 7 months · Eskişehir, Turkey · Hybrid

Managed critical infrastructure projects with a focus on scalability and high availability. Led production environment migrations, on-prem deployments, and designed test environments with Kubernetes, Docker, Docker Compose and Nginx load balancing.

Built observability with Zabbix, Prometheus, and Grafana — including custom dashboards integrated with Jitsi-based video conferencing data. Deep Linux administration, systemd, Bash automation.
Intern Software Engineer

Anadolu University

Aug 2023 – Sep 2023 · 2 months · Eskişehir, Turkey · On-site

AWS EC2 provisioning, secure remote access (SSH, RSA Key-Pairs, Elastic IP). Bash scripting: recursive directory size, tar backup utility, public IPv4 tracking, curl-based REST API automation.
Intern Software Engineer

KONNEKA Information and Communication Technologies

Sep 2022 – Dec 2022 · 4 months · Ankara, Turkey · On-site

Linux (Ubuntu) administration with Netplan networking. Contributed to an enterprise Sandbox security product by refactoring/localizing Python backend scripts. Researched Android malware families (Cerberus, Golden Cup, Defensor ID) with static/dynamic analysis.
Intern Computer Technician

Turkish Republic State Railways (TCDD A.Ş.)

Jul 2017 – Aug 2017 · 2 months · Ankara, Turkey

First-tier IT support, peripheral hardware diagnosis. Digitized HR records into Excel and enterprise systems with careful data handling.

04 / Education

Education

Karadeniz Technical University

Software Engineering — Bachelor's

2019 – 2024 · GPA 3.04 / 4.00
Gazi Vocational and Technical High School

Information Technologies

2014 – 2018 · Database programming, OOP, web development

05 / Certifications

Certifications

CNCF

Certified Kubernetes Application Developer (CKAD) 85%

Hands-on certification covering application design, deployment, observability, and configuration on Kubernetes — pods, deployments, services, ingress, configmaps/secrets, probes, and resource management.
Linux Foundation

Introduction to GitOps (LFS169)

GitOps principles and workflows — Git as the single source of truth for declarative infrastructure and application delivery pipelines.

Feb 17, 2026 · LF-wex05gxt15 · View ↗
Linux Foundation

Introduction to Linux (LFS101)

Linux command-line, filesystem hierarchy, user and permission management, essential system administration.

Feb 07, 2026 · LF-cnbs4ta0e3 · View ↗
Linux Foundation

Introduction to Kubernetes (LFS158)

Core Kubernetes concepts — cluster architecture, workloads, services, storage, container orchestration at scale.

Jul 19, 2025 · LF-j5qzcl1mq1 · View ↗
BTK Academy

Docker Fundamentals

Docker installation, container testing and deployment, container security topics.

No: 8jmhL4dnA9
BTK Academy

Linux OS in Cyber Security

Linux security fundamentals and shell programming for security workflows.

No: kK1hVK6v10
BTK Academy

Version Controls: Git and GitHub

Git version control and GitHub workflows for software development.

No: GoDfnkne1p
BTK Academy

Rust Programming Language

Safe, concurrent systems programming in Rust — fast web development and multi-core utilization.

No: zXztaxk2Dl