Nikola JovanoviÇ
DevOps Engineer

Contact
rarelymediocre@gmail.com
+381 63 88 98 719
Novi Sad, Serbia

Technical Skills
Cloud & Infra:AWS (EC2, S3, RDS, Aurora, ECR, EFS, EKS, IAM, CloudWatch, Route53)
Containers & Orchestration:Docker, Docker Compose, Docker Swarm, Kubernetes, K3s, Proxmox
CI/CD & Automation:GitHub Actions, Jenkins, Bitbucket Pipelines, GitLab CI, Ansible
Observability:Grafana, Prometheus, Loki, Promtail
Messaging & IoT:MQTT, AMQP, WebSockets, RabbitMQ, Mosquitto
Databases:MySQL, Cassandra
Systems & Networking:Linux (Debian, Ubuntu, CentOS), TCP/IP, DNS, VPN, Nginx
Build & Versioning:Java/Gradle, Dockerizing apps, Git
Virtualization:Proxmox, VirtualBox, Qemu

Work Experience
DevOps Engineer — WolkAbout
Feb 2023 — Present
- Installed, deployed, and maintained IoT platform architecture with MQTT, AMQP, WebSockets, RabbitMQ, Redis, MySQL, Cassandra, and Tomcat backend services.
- Set up platforms for both on-premises development environments and production client deployments.
- Managed services via systemd, Docker Compose, Docker Swarm, self-hosted K3s, and AWS EKS clusters.
- Automated deployment pipelines using GitHub Actions, Jenkins, and Bitbucket Pipelines to improve release cadence.
- Managed AWS infrastructure (EC2, S3, RDS, Aurora, Route53, Cost Management, ECR, EFS, EKS, SES, IAM, CloudWatch).
- Implemented Grafana with Promtail and Loki for centralized logging and monitoring.
- Built and containerized Java/Gradle applications using Docker.
- Operated a multi-node bare-metal Proxmox cluster supporting company-wide infrastructure.

DevOps Engineer / System Administrator — Zesium
Apr 2022 — Feb 2023
- Deployed and maintained Dockerized applications across multiple Linux servers.
- Automated development workflows using Jenkins and integrated GitLab pipelines for continuous deployment.
- Introduced Docker Swarm and Kubernetes for container orchestration.
- Optimized Nginx configurations and resolved network issues for efficient request handling.
- Collaborated with development teams to streamline deployments and meet security standards.

Linux System Administrator — Netex Consulting
Sep 2020 — Apr 2022
- Managed Linux infrastructure, including installation and configuration of servers for B2B clients.
- Configured and maintained SIP/VOIP systems for 500+ employees.
- Virtualized environments using Oracle VirtualBox, reducing infrastructure costs.
- Set up VPN and firewall systems to enable secure remote work.
- Created technical documentation and internal training materials.

Education
Secondary School of Traffic
2007
Srednja saobraÇajna  Åkola, Zemun — Field of Study: Traffic Technician