Technologies

The technologies and methods we work with in client projects and our own products. Every term is documented in the code or configuration of our more than 140 project and product repositories.

Languages
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
Data & 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
Containers & platform
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 runners · GitOps · Blue/green & canary deployments · Dependabot · Renovate · Release management
Observability & operations
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
Artificial intelligence
OpenAI · Anthropic Claude · Google Gemini · Mistral · DeepSeek · Perplexity · OpenRouter · Groq · Ollama · vLLM · LM Studio · Azure OpenAI · Amazon Bedrock · Model Context Protocol (MCP) · AI agents & agent skills · LangChain · Embeddings & RAG · Whisper · OCR · Hugging Face · PyTorch · Guardrails · LLM evaluation & benchmarks · Crawl4AI · SearXNG · Generative engine optimization
Quality & testing
pytest · JUnit · Mockito · ScalaTest · Vitest · Jest · Playwright · Puppeteer · Cucumber/Gherkin (BDD) · Robot Framework · Postman/Newman · WireMock · MSW · JMeter · k6 · Lighthouse · axe · Property-based testing
Telecommunications
GSMA Open Gateway · CAMARA · Number Verification · SIM Swap · Network Exposure Function (NEF) · 5G · 3GPP · TM Forum Open APIs · eSIM
Payments & billing
Subscriptions · Usage-based billing · Stripe · Mollie · PayPal · Adyen · Klarna · SEPA · E-invoicing (ZUGFeRD, XRechnung)
Integration & collaboration
Jira · Confluence · Microsoft Graph · SharePoint · Microsoft Teams · Google Workspace · Telegram · E-mail (SMTP) · Excel, Word & PDF automation
Mainframe & legacy
COBOL · PL/I · JCL · CICS · VSAM · IBM Db2 · z/OS · Reverse engineering · Legacy reconstruction
Architecture & methods
Microservices · Event-driven architecture · Multi-tenancy · Domain-driven design · Hexagonal architecture · Saga & outbox · Idempotency & resilience · Feature flags · Monorepos · Web crawling & scraping · Constraint optimisation (OR-Tools) · arc42 & C4 · Mermaid · Scrum · ITIL
Web & visibility
SEO · Structured data (schema.org) · Internationalisation (i18n) · Accessibility (WCAG) · Lighthouse audits
Platforms & devices
Linux · Windows · macOS · iOS · tvOS · Android · Android TV · Fire TV · VPN
Law & compliance
GDPR/BDSG · Schrems II · DDG · TDDDG · UWG · BFSG (accessibility) · DORA · ISO 27001 · EU AI Act · Audit logging