# OneX Systems — DevOps & AWS Engineering

> OneX Systems delivers DevOps and AWS infrastructure services: Kubernetes, Terraform, CI/CD pipelines, and observability stacks. Founded by Dmytro Hamera, ex-PrivatBank DevOps engineer with 3yr 9mo of production infrastructure experience at one of Ukraine's largest banks (20M+ customers). Last updated: 2026-06.

## What We Do

OneX Systems builds and maintains production-grade DevOps infrastructure for startups and scale-ups. We specialize in systems that run reliably under real load — not proof-of-concepts.

## Services

### AWS Infrastructure & Cost Optimization
We audit your current AWS spend, eliminate waste, and implement cost controls. Typical result: 30–40% reduction in 2 weeks. Includes right-sizing, unused resource cleanup, S3 lifecycle policies, Reserved Instance planning.

### Kubernetes Setup & Migration
Production-ready Kubernetes clusters with monitoring, autoscaling, and GitOps deployment via ArgoCD. We handle the full stack: cluster provisioning, networking, RBAC, ingress, cert-manager, and day-2 operations runbooks.

### CI/CD Pipeline Build
GitLab CI or GitHub Actions pipelines with Docker multi-stage builds, AWS ECR registry, and automated deploys to Kubernetes. Parallel test execution, layer caching, and ArgoCD sync. Typical result: deploy time cut from hours to minutes.

### Observability Stack
Prometheus + Grafana + Loki + Alertmanager from scratch or on top of existing infra. Custom dashboards, SLO/SLA tracking, and alert routing to Telegram or PagerDuty. You will know about incidents before your users do.

### Infrastructure as Code (Terraform)
AWS infrastructure written as Terraform modules: VPC, EC2, RDS, EKS, IAM, ECR, S3. Reproducible environments, version-controlled, reviewed in CI before apply.

## Who We Work With

- SaaS companies needing production-ready infrastructure
- Startups setting up AWS for the first time
- Teams with slow CI/CD pipelines (30+ minute deploys)
- Engineering leads who want full visibility into production
- Companies worried about AWS bill growth

## Founder

Dmytro Hamera — Founder & DevOps Engineer. 3yr 9mo building and maintaining production infrastructure for PrivatBank, one of Ukraine's largest banks (20M+ customers). Stack: Kubernetes, Terraform, AWS (EC2/RDS/VPC/IAM/ECR), ArgoCD, GitLab CI, Prometheus, Grafana, Loki. Results: 99.9% uptime SLA, CI/CD 45min → 8min, <5min incident detection.

## Pricing

- AWS cost audit: fixed scope, typically 1–2 weeks
- Kubernetes cluster setup: $3,000–$6,000 | 2–3 weeks
- CI/CD pipeline build: $1,500–$3,000 | 1–2 weeks
- Observability stack: $2,000–$4,000 | 1–2 weeks
- Terraform IaC migration: $2,500–$5,000 | 2–4 weeks

All projects: infrastructure audit call first, fixed scope agreed before start, no surprises.

## How It Works

1. **Audit call** — Review your current infrastructure, identify the biggest risks and wins. Free, 30 minutes.
2. **Fixed scope** — Deliver a written scope with price before starting. You approve before any work begins.
3. **Build & handoff** — Production-grade delivery with documentation, runbooks, and 30-day support included.

## Key Results

- PrivatBank Infrastructure: 99.9% uptime SLA over 3yr 9mo; Kubernetes + Terraform + AWS + ArgoCD + full observability
- CI/CD Overhaul: Deploy time 45min → 8min; GitLab CI + Docker + ECR + ArgoCD
- Observability from Zero: Incident detection <5min; Prometheus + Grafana + Loki + Alertmanager + Telegram

## Contact

- Telegram: https://t.me/dmytrohamera
- WhatsApp: +380951500486
- LinkedIn: https://www.linkedin.com/in/dmytro-hamera/
- Website: https://onex.systems

## Technologies

AWS (EC2, EKS, RDS, VPC, IAM, ECR, S3) · Kubernetes · Terraform · ArgoCD · GitLab CI · GitHub Actions · Docker · Prometheus · Grafana · Loki · Helm · Alertmanager · Python · Bash · Linux

## License

Content available under CC BY 4.0 — cite with link to https://onex.systems