Proficiency
Our sysadmin competencies

This page is an honest rating of our sysadmin competencies. One dot already means we have delivered at least one project featuring that technology; five dots means we are experts and can teach it.

Basics
Working
Solid
Advanced
Expert

Containers & orchestration

Docker
Kubernetes
Helm
Terraform

Cloud PaaS

DigitalOcean
AWS
Google Cloud
Microsoft Azure
Cloudflare
Hetzner
OVHcloud
Microsoft Entra ID

AI APIs & services

Anthropic
OpenAI
Mistral AI
Google Gemini
Ollama
DigitalOcean AI Platform

Web servers & caching

NGINX
Apache HTTP Server
Varnish
Let's Encrypt

Databases

PostgreSQL
MySQL
Microsoft SQL Server
MongoDB
Redis / Valkey

Search

Elasticsearch
OpenSearch

Queues & streaming

RabbitMQ
Apache Kafka

Data platforms

Apache Spark
Databricks
Google BigQuery
Snowflake
Apache Airflow
Power BI
Looker Studio

CI/CD & testing

GitHub Actions
Argo CD
Playwright
Jenkins
CircleCI
Travis CI
Gitea Actions

Monitoring & security

Sentry
Grafana
Prometheus
Loki
Datadog
SonarQube
Penetration testing

Operating systems

Debian-based
Red Hat-based
Windows
macOS
iOS
Android

Languages

PHP
Bash
JavaScript
TypeScript
Python
Kotlin
Java
Node.js
Swift

Frameworks

Symfony
Laravel
Ktor
Flutter
Svelte
React

E-commerce platforms

Sylius
Magento
Shopify
Shopware
WooCommerce
OpenCart
PrestaShop
BigCommerce
Akeneo
Mirakl
Marketplacer

Marketplaces

Amazon Marketplace
eBay
Allegro
OnBuy
Kaufland
Zalando
Temu
Shein
eMAG

ERP, CRM & business systems

SAP
Microsoft Dynamics 365
Salesforce
Odoo
NetSuite
Xero
WMS & PIM integrations

CMS & PIM

Pimcore
Adobe Experience Manager
WordPress
Drupal