# Technologien

Die Technologien und Methoden, mit denen wir in Kundenprojekten und eigenen Produkten arbeiten. Jeder Begriff ist im Code oder in der Konfiguration unserer über 140 Projekt- und Produkt-Repositories belegt.

- **Programmiersprachen:** Python, TypeScript, JavaScript, Java, Go, Scala, Kotlin, Swift, Dart, C#, PHP, SQL, Bash, PowerShell, COBOL, PL/I, JCL
- **Frontend & Apps:** React, Next.js, Vite, Tailwind CSS, shadcn/ui, SvelteKit, Astro, Three.js, React Native, Expo, Flutter, SwiftUI, Jetpack Compose, Tauri, Browser-Extensions, PWA
- **Backend & APIs:** Node.js, FastAPI, Pydantic, Spring Boot, Quarkus, Fastify, Hono, Express, GoFrame, Zod, SQLAlchemy, Prisma, Drizzle ORM, Liquibase, REST & OpenAPI, GraphQL, gRPC, WebSockets, Server-Sent Events, SOAP
- **Daten & Analytics:** Databricks, Apache Spark, Delta Lake, Apache Hive, Apache Kyuubi, BigQuery, DuckDB, PostgreSQL, MySQL/MariaDB, SQLite, Redis, Elasticsearch, Kibana, Logstash, IBM Db2, Apache Avro, Apache Parquet, Pandas, NumPy, Grafana
- **Messaging & Streaming:** Apache Kafka, RabbitMQ, Azure Event Hubs, Azure Service Bus, Webhooks, Event-Driven Architecture
- **Cloud:** Microsoft Azure, AWS (S3, Route 53, Bedrock), Cloudflare, Supabase, Vercel, Netlify, Firebase, Hetzner, IONOS
- **Microsoft Azure:** AKS, Functions, App Service, Container Apps, Container Registry, Front Door, Key Vault, Entra ID, Managed Identity, Blob Storage, Event Hubs, Service Bus, Application Insights, Log Analytics, Azure OpenAI
- **Container & Plattform:** Docker, Kubernetes, Helm, Kustomize, KEDA, Istio, Envoy, Nginx, Traefik, Caddy, Kong, HAProxy, cert-manager, systemd, WireGuard
- **CI/CD & Infrastructure as Code:** Terraform, Bicep, Ansible, GitHub Actions, GitLab CI, Self-hosted Runner, GitOps, Blue/Green- & Canary-Deployments, Dependabot, Renovate, Release-Management
- **Observability & Betrieb:** OpenTelemetry, Prometheus, Alertmanager, Grafana, Loki, Jaeger, Fluent Bit, Splunk, Sentry, Application Insights, SRE & SLOs, FinOps
- **Security & Identity:** OAuth 2.0, OpenID Connect, PKCE, JWT, SAML, mTLS, X.509/PKI, Keycloak, Auth0, Microsoft Entra ID, WebAuthn/Passkeys, Rate Limiting, Content Security Policy, HSTS, Gitleaks, Trivy, Semgrep, Checkov, Snyk, SonarQube, OWASP, Nmap, Open Policy Agent, Confidential Computing
- **Künstliche Intelligenz:** OpenAI, Anthropic Claude, Google Gemini, Mistral, DeepSeek, Perplexity, OpenRouter, Groq, Ollama, vLLM, LM Studio, Azure OpenAI, Amazon Bedrock, Model Context Protocol (MCP), KI-Agenten & Agent Skills, LangChain, Embeddings & RAG, Whisper, OCR, Hugging Face, PyTorch, Guardrails, LLM-Evaluierung & Benchmarks, Crawl4AI, SearXNG, Generative Engine Optimization
- **Qualität & Test:** pytest, JUnit, Mockito, ScalaTest, Vitest, Jest, Playwright, Puppeteer, Cucumber/Gherkin (BDD), Robot Framework, Postman/Newman, WireMock, MSW, JMeter, k6, Lighthouse, axe, Property-based Testing
- **Telekommunikation:** GSMA Open Gateway, CAMARA, Number Verification, SIM Swap, Network Exposure Function (NEF), 5G, 3GPP, TM Forum Open APIs, eSIM
- **Payments & Abrechnung:** Subscriptions, nutzungsbasierte Abrechnung, Stripe, Mollie, PayPal, Adyen, Klarna, SEPA, E-Rechnung (ZUGFeRD, XRechnung)
- **Integration & Collaboration:** Jira, Confluence, Microsoft Graph, SharePoint, Microsoft Teams, Google Workspace, Telegram, E-Mail (SMTP), Excel-, Word- & PDF-Automatisierung
- **Mainframe & Legacy:** COBOL, PL/I, JCL, CICS, VSAM, IBM Db2, z/OS, Reverse Engineering, Legacy-Rekonstruktion
- **Architektur & Methoden:** Microservices, Event-Driven Architecture, Multi-Tenancy, Domain-Driven Design, Hexagonal Architecture, Saga & Outbox, Idempotenz & Resilienz, Feature Flags, Monorepos, Web-Crawling & Scraping, Constraint-Optimierung (OR-Tools), arc42 & C4, Mermaid, Scrum, ITIL
- **Web & Sichtbarkeit:** SEO, strukturierte Daten (schema.org), Internationalisierung (i18n), Barrierefreiheit (WCAG), Lighthouse-Audits
- **Plattformen & Geräte:** Linux, Windows, macOS, iOS, tvOS, Android, Android TV, Fire TV, VPN
- **Recht & Compliance:** DSGVO/BDSG, Schrems II, DDG, TDDDG, UWG, BFSG (Barrierefreiheit), DORA, ISO 27001, EU AI Act, Audit-Logging

Stand: 2026-10-18

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Quelle: <https://www.klein.business/technologien/>