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Android Jetpack Compose Mastery

Beyond basics: custom layouts, animations, side effects, and Compose performance.

📖 3 lessons 🎯 None

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Apache Airflow Deep Dive

Beyond the basics: dynamic DAGs, sensors, custom operators, and production Airflow deployments.

📖 3 lessons 🎯 None

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Apache Cassandra — Wide-Column Store

Distributed wide-column NoSQL: Cassandra ring topology, partitioning, and tunable consistency.

📖 3 lessons 🎯 None

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Apache Druid — Real-Time OLAP

Sub-second analytical queries on streaming + historical data with Apache Druid.

📖 3 lessons 🎯 None

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Apache Flink — Real-Time Stream Processing

Stateful stream processing with Apache Flink: windows, watermarks, and exactly-once semantics.

📖 3 lessons 🎯 None

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Apache Kafka — Event-Streaming-Plattform

Baue Echtzeit-Event-Driven-Systeme mit Kafka Topics, Producers, Consumers und Kafka Streams.

📖 3 lessons 🎯 Backend development, Distributed systems basics

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Apache Spark — Big-Data-Verarbeitung

Verarbeite riesige Datasets im großen Maßstab mit Spark SQL, DataFrames und Spark Streaming.

📖 3 lessons 🎯 Python or Scala, SQL basics

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API Gateway Patterns

API gateway design: Kong, Tyk, AWS API Gateway. Routing, auth, rate limiting, and BFF patterns.

📖 3 lessons 🎯 None

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Application Security — SAST & DAST

Find vulnerabilities before attackers do: static analysis, dynamic scanning, and dependency auditing.

📖 3 lessons 🎯 None

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Astro — The Content-Focused Framework

Build blazing-fast content sites with Astro: islands architecture, partial hydration, and zero-JS by default.

📖 3 lessons 🎯 None

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Authentication & OAuth 2.1

Production auth patterns: OAuth 2.1, OIDC, JWTs, refresh tokens, and session management without the gotchas.

📖 3 lessons 🎯 None

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Backend for Frontend (BFF)

Tailored backends per client: BFF pattern, GraphQL federation, and the API composition layer.

📖 3 lessons 🎯 None

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Backstage — Developer Portals

Spotify Backstage: service catalogs, scaffolders, and internal developer portals.

📖 3 lessons 🎯 None

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Browser Extensions

Chrome MV3 extensions: content scripts, service workers, storage, and Web Store publishing.

📖 3 lessons 🎯 None

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Browser Internals — V8 & Rendering

How browsers work: V8 JIT, the rendering pipeline, layout, paint, composite, and event loop.

📖 3 lessons 🎯 None

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CDN & Edge — Cloudflare Workers

Serverless at the edge: Cloudflare Workers, KV, D1, R2, and Durable Objects.

📖 3 lessons 🎯 None

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Chaos Engineering

Break things on purpose: chaos engineering principles, Chaos Mesh, and resilience testing.

📖 3 lessons 🎯 None

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ClickHouse — Analytics Database

OLAP at scale: ClickHouse column store, merge tree engines, and sub-second analytics queries.

📖 3 lessons 🎯 None

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Clojure — Lisp on the JVM

Modern Lisp with immutable data structures, REPL-driven development, and the JVM ecosystem.

📖 3 lessons 🎯 None

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Cloud Computing mit AWS

AWS-Kernservices: EC2, S3, Lambda und Deployment echter Anwendungen in der Cloud.

📖 4 lessons 🎯 linux-bash, docker-containers

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Cloud Security — IAM Patterns

Least privilege, role assumption, identity federation, and IAM in AWS, GCP, and Azure.

📖 3 lessons 🎯 None

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Compilers — How Programming Languages Work

Lexing, parsing, AST, semantic analysis, IR, optimization, and code generation. Build a small compiler.

📖 3 lessons 🎯 None

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Computer Graphics & WebGL

Rasterization, shaders, lighting models, and 3D rendering with WebGL and Three.js.

📖 3 lessons 🎯 None

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Computer Vision — Object Detection

YOLOv8, DETR, Segment Anything, and modern object detection pipelines.

📖 3 lessons 🎯 None

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Computer Vision mit PyTorch

Deep Learning für Bilder: CNNs, Objekterkennung, Segmentierung und moderne Vision-Modelle.

📖 3 lessons 🎯 Deep Learning fundamentals, Python

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Container Security

Image scanning, runtime security, eBPF-based detection, and securing Kubernetes clusters.

📖 3 lessons 🎯 None

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CRDTs — Conflict-Free Data Types

Collaborative apps without conflicts: state-based and op-based CRDTs.

📖 3 lessons 🎯 None

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Cryptography in Practice

Symmetric, asymmetric, hashing, KDFs, and avoiding the common crypto mistakes.

📖 3 lessons 🎯 None

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Data Engineering Pipelines

ETL mit Python, Apache Airflow, Kafka und der Aufbau von Datenpipelines in der Produktion.

📖 4 lessons 🎯 python-ai, sql-databases, docker-containers

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Data Mesh Architecture

Decentralized data ownership: data mesh principles, data products, and federated governance.

📖 3 lessons 🎯 None

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Database Internals — Storage Engines

B-trees, LSM-trees, WAL, MVCC, and how databases actually store and retrieve data.

📖 3 lessons 🎯 None

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Datenstrukturen und Algorithmen

Arrays, verkettete Listen, Bäume, Graphen und die wichtigsten Algorithmen für technische Interviews und effizienten …

📖 4 lessons ⏱ 6h 🎯 python-ai

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dbt — Data Build Tool

Transform data in your warehouse using dbt: models, tests, snapshots, and analytics engineering.

📖 3 lessons 🎯 None

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Deep Learning und Neuronale Netze

Neuronale Netze von Grund auf, PyTorch, CNNs und Training echter Modelle mit praktischen Datasets.

📖 4 lessons ⏱ 1h 🎯 machine-learning

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DevOps und CI/CD-Pipelines

GitHub Actions, Continuous Deployment, Infrastructure as Code und die moderne DevOps-Kultur.

📖 3 lessons 🎯 git-version-control, docker-containers

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Diffusion Models Deep Dive

How diffusion models work: forward/reverse process, U-Nets, and beyond Stable Diffusion.

📖 3 lessons 🎯 None

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Discrete Mathematics for CS

Sets, logic, combinatorics, graph theory, and proofs — the math behind every CS topic.

📖 3 lessons 🎯 None

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Distributed Caching Patterns

Cache aside, write-through, write-behind, cache invalidation, and the consistent hashing ring.

📖 3 lessons 🎯 None

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Distributed Consensus — Raft & Paxos

How distributed systems agree: Raft, Paxos, and the CAP theorem in practice.

📖 3 lessons 🎯 None

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Docker und Container

Erstelle, deploye und verwalte Container. Dockerfiles, Images, Netzwerke und Basisorchestrierung mit docker-compose.

📖 3 lessons ⏱ 3h 🎯 linux-bash

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Domain-Driven Design (DDD)

Bounded contexts, aggregates, ubiquitous language, and strategic design with DDD.

📖 3 lessons 🎯 None

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Elixir & Phoenix — Concurrent Web

Build massively concurrent apps with Elixir, the BEAM VM, and the Phoenix LiveView framework.

📖 3 lessons 🎯 None

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Entwurfsmuster und Low-Level Design

SOLID-Prinzipien, GoF-Muster (Singleton, Factory, Observer) und Low-Level Design für Interviews.

📖 4 lessons ⏱ 1h 🎯 data-structures-algorithms, python-ai

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Ethical Hacking und Penetration Testing

Lerne offensive Sicherheit: Reconnaissance, Exploitation und defensives Denken mit Hands-on-Labs.

📖 3 lessons 🎯 Cybersecurity basics, Linux

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Event Sourcing & CQRS

Store events instead of state: event sourcing, CQRS, and projections.

📖 3 lessons 🎯 None

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Event-Driven Architecture

Event-driven patterns: pub/sub, event streaming, event-carried state transfer.

📖 3 lessons 🎯 None

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Flutter — Plattformübergreifende Mobile Apps

Erstelle schöne, nativ wirkende Apps für iOS und Android mit Flutter und Dart.

📖 3 lessons 🎯 Programming experience

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Game Development with Unity

Build 2D and 3D games with Unity, C#, and the modern Unity 6 toolchain.

📖 3 lessons 🎯 None

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Game Networking — Multiplayer

Multiplayer architecture: client-server vs peer-to-peer, lag compensation, and rollback netcode.

📖 3 lessons 🎯 None

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Game Physics & Math

Vectors, matrices, quaternions, collision detection, and the math foundation of game physics.

📖 3 lessons 🎯 None

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Git und GitHub — Versionskontrolle für Entwickler

Beherrsche Git und GitHub: Branches, Merges, Pull Requests und kollaborative Workflows für professionelle Teams.

📖 3 lessons ⏱ 2h 🎯 None

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GitOps with Argo CD

Declarative continuous deployment: Argo CD, App-of-Apps pattern, and progressive rollouts.

📖 3 lessons 🎯 None

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Go — Cloud-Native Backend-Entwicklung

Go-Syntax, Goroutines, Channels, REST APIs mit Gin und Cloud-Native Deployment mit Docker.

📖 4 lessons ⏱ 1h 🎯 python-ai, apis-rest

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Godot — Open Source Game Engine

Godot 4: scenes, nodes, GDScript, and shipping games on multiple platforms for free.

📖 3 lessons 🎯 None

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Google Cloud Platform (GCP)

Compute Engine, Cloud Run, BigQuery, Pub/Sub, and the GCP ecosystem.

📖 3 lessons 🎯 None

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GraphQL — Modernes API-Design

Entwerfe flexible, typsichere APIs mit GraphQL, Apollo und modernem Tooling.

📖 3 lessons 🎯 REST API basics

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gRPC & Protocol Buffers

Build high-performance RPC services with gRPC, Protocol Buffers, and streaming.

📖 3 lessons 🎯 None

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intermediate

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Grundlagen Computernetzwerke

TCP/IP, DNS, HTTP/HTTPS, WebSockets und die Netzwerkkonzepte, die jeder Backend-Entwickler beherrschen muss.

📖 3 lessons 🎯 None

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intermediate

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Grundlagen der Cybersicherheit

OWASP Top 10, Kryptographie, Authentifizierung und defensive Denkweise für jeden Entwickler.

📖 3 lessons 🎯 linux-bash, apis-rest

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beginner

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Grundlagen der Webentwicklung

Lerne HTML, CSS und JavaScript von Grund auf. Die essentielle Basis für jeden modernen Web-Entwickler.

📖 4 lessons ⏱ 1h 🎯 None

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Haskell — Functional Programming

Pure functional programming with Haskell: types, monads, lazy evaluation, and category theory basics.

📖 3 lessons 🎯 None

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Helm Charts — Kubernetes Packaging

Templating, charts, repositories, and managing Kubernetes apps with Helm 3.

📖 3 lessons 🎯 None

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Hexagonal & Clean Architecture

Ports and adapters, clean architecture layers, and dependency inversion in practice.

📖 3 lessons 🎯 None

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Internationalization (i18n)

i18n architecture: ICU MessageFormat, plurals, RTL, locale-aware formatting, and translation pipelines.

📖 3 lessons 🎯 None

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iOS Animations & SwiftUI Mastery

SwiftUI matched geometry, spring animations, transitions, and Lottie. Build delightful iOS UX.

📖 3 lessons 🎯 None

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Java — Vom Nullpunkt zum Unternehmen

Java-Syntax, OOP, Collections, Streams und Spring Boot für die Entwicklung von Enterprise-Anwendungen.

📖 5 lessons ⏱ 1h 🎯 None

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intermediate

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Kotlin und Android-Entwicklung

Erstelle native Android-Apps mit Kotlin und Jetpack Compose. MVVM, Navigation und Veröffentlichung im Play Store.

📖 4 lessons ⏱ 1h 🎯 java-fundamentals

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Kubernetes — Container-Orchestrierung im großen Stil

Deploye, skaliere und verwalte containerisierte Anwendungen in Produktion mit Kubernetes.

📖 3 lessons 🎯 Docker & Containers

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intermediate

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LangChain — LLM-Anwendungen bauen

Baue produktionsreife LLM-Apps mit LangChain: Chains, Agents, Tools, Memory und Retrieval.

📖 3 lessons 🎯 Python, NLP & LLM basics

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beginner

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Linux und Bash — Kommandozeile für Entwickler

Essenzielle Linux-Befehle, Bash-Scripting und Systemadministration. Unverzichtbare Werkzeuge für jeden Entwickler.

📖 3 lessons ⏱ 6h 🎯 None

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LLM Fine-Tuning with LoRA & QLoRA

Fine-tune large language models efficiently with LoRA, QLoRA, and the HuggingFace ecosystem.

📖 3 lessons 🎯 None

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intermediate

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Logging at Scale — ELK & Loki

Structured logging, log aggregation with the ELK stack and Loki, and log-based debugging.

📖 3 lessons 🎯 None

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intermediate

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Machine Learning mit Python

Klassische ML-Algorithmen, scikit-learn, Kreuzvalidierung und praktische Projekte zu Regression und Klassifikation.

📖 4 lessons ⏱ 19h 🎯 python-ai

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Microservices — Muster und Praktiken

Entwerfe, baue und betreibe verteilte Systeme mit Microservice-Patterns und Best Practices.

📖 3 lessons 🎯 System Design basics

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intermediate

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Microsoft Azure for Developers

Azure App Service, Functions, Cosmos DB, and the Azure developer toolchain.

📖 3 lessons 🎯 None

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MLOps — Machine Learning in der Produktion

Bringe ML-Modelle vom Notebook in die Produktion: Tracking, Deployment, Monitoring und CI/CD.

📖 3 lessons 🎯 Machine Learning basics

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Mobile App Performance Tuning

Profile, measure, and optimize: startup time, frame drops, memory leaks, and battery use.

📖 3 lessons 🎯 None

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intermediate

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Mobile Push Notifications

FCM, APNs, deep linking, rich notifications, and notification analytics.

📖 3 lessons 🎯 None

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intermediate

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Mobile Testing — XCTest & Espresso

Unit, UI, snapshot, and integration tests on iOS (XCTest) and Android (Espresso, Compose).

📖 3 lessons 🎯 None

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advanced

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Mobile-App-Architektur — Sauber und Skalierbar

Entwerfe Produktions-Mobile-Apps mit MVVM, Clean Architecture, modularem Design und Dependency Injection.

📖 3 lessons 🎯 Mobile development experience

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intermediate

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Modernes JavaScript — Von ES6 bis Async/Await

Beherrschung von modernem JavaScript: Arrow Functions, Destructuring, Module, Promises und Async/Await in realen …

📖 4 lessons ⏱ 3h 🎯 web-fundamentals

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intermediate

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MongoDB und NoSQL-Datenbanken

Dokumentdatenbanken: Schema-Design, Queries, Aggregationen und Skalierung mit MongoDB.

📖 3 lessons 🎯 Database fundamentals

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advanced

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Multimodal Models — CLIP & BLIP

Models that bridge vision and language: CLIP, BLIP, and multimodal embeddings for search and generation.

📖 3 lessons 🎯 None

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intermediate

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Next.js — Full-Stack React Framework

Moderne, server-gerenderte React-Apps: App Router, Server Components und Vercel-Deployment.

📖 3 lessons 🎯 React.js basics

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advanced

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NLP und Large Language Models

Natürliche Sprachverarbeitung, Transformers, Attention und der Aufbau von Anwendungen mit LLMs.

📖 3 lessons 🎯 machine-learning, deep-learning

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intermediate

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Node.js — Server-seitiges JavaScript

Erstelle Produktionsserver und APIs mit Node.js, Express und modernen asynchronen Patterns.

📖 3 lessons 🎯 JavaScript fundamentals

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advanced

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OpenTelemetry & Distributed Tracing

Instrument microservices with OpenTelemetry: traces, metrics, logs, and the unified observability stack.

📖 3 lessons 🎯 None

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Operating Systems Concepts

Processes, threads, scheduling, virtual memory, file systems, and how Linux really works.

📖 3 lessons 🎯 None

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Platform Engineering

IDPs, golden paths, and the modern platform engineering team.

📖 3 lessons 🎯 None

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intermediate

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PostgreSQL — Erweiterte Abfragen und Performance

Beherrsche Postgres: Indexing, Query Planning, JSONB, Window Functions und Tuning für Skalierung.

📖 3 lessons 🎯 SQL basics

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intermediate

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Prometheus & Grafana

Metrics-based monitoring: Prometheus scraping, PromQL queries, and Grafana dashboards.

📖 3 lessons 🎯 None

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intermediate

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Prompt Engineering und KI-Agenten

Beherrsche Prompts: Chain-of-Thought, Few-Shot, ReAct und baue praktische KI-Agenten mit LangChain.

📖 5 lessons ⏱ 1h 🎯 python-ai, nlp-and-llms

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intermediate

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Pulumi — Infrastructure as Code

IaC in real languages (TypeScript, Python, Go) with Pulumi instead of HCL.

📖 3 lessons 🎯 None

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intermediate

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PWAs & Service Workers

Progressive Web Apps: service workers, offline-first, push notifications, and installable web.

📖 3 lessons 🎯 None

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beginner

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Python für KI — Vom Nullpunkt zum Agenten

Vollständiger Python-Kurs für Anfänger mit Fokus auf KI/ML-Anwendungen. Keine Programmiererfahrung erforderlich.

📖 6 lessons ⏱ 1h 🎯 None

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intermediate

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RabbitMQ — Message Queues

Decouple services with RabbitMQ: queues, exchanges, routing, and consumer patterns.

📖 3 lessons 🎯 None

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intermediate

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React Native — Cross-Platform Mobile

Build native iOS and Android apps from one JavaScript codebase using React Native, Expo, and modern patterns.

📖 3 lessons 🎯 None

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intermediate

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React.js — Moderne UI-Entwicklung

Erstelle Single-Page-Anwendungen mit React: Komponenten, Hooks, State und moderne Patterns des Ökosystems.

📖 4 lessons ⏱ 15h 🎯 web-fundamentals, javascript-modern

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advanced

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Recommendation Systems

Collaborative filtering, matrix factorization, neural recommenders, and ranking with two-tower models.

📖 3 lessons 🎯 None

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intermediate

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Redis — Caching und In-Memory-Daten

Nutze Redis für Caching, Sessions, Queues, Leaderboards und Pub/Sub im großen Maßstab.

📖 3 lessons 🎯 Backend development basics

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advanced

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Reinforcement Learning

Agents that learn from rewards: Q-learning, policy gradients, and deep RL with PPO.

📖 3 lessons 🎯 None

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intermediate

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REST APIs — Design und Aufbau

Entwerfe robuste RESTful APIs: Routen, Authentifizierung, Paginierung, Versionierung und Industrie-Best-Practices.

📖 3 lessons ⏱ 23h 🎯 python-ai, sql-databases

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advanced

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Rust — Systemprogrammierung ohne Angst

Speichersichere Systemprogrammierung: Ownership, Borrowing und Zero-Cost-Abstraktionen.

📖 3 lessons 🎯 Programming experience in any language

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advanced

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Sagas & Distributed Transactions

Distributed transaction patterns: sagas, two-phase commit, and Outbox.

📖 3 lessons 🎯 None

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advanced

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Scala for Backend Development

Hybrid functional and OO programming on the JVM with Scala 3, Akka, and Play.

📖 3 lessons 🎯 None

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intermediate

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SEO Engineering for Developers

Technical SEO: crawlability, sitemaps, structured data, Core Web Vitals, and search Console.

📖 3 lessons 🎯 None

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advanced

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Serverless with AWS Lambda Advanced

Beyond hello world: cold starts, layers, container Lambdas, EventBridge, and SAM/CDK.

📖 3 lessons 🎯 None

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advanced

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Service Mesh — Istio & Linkerd

Traffic management, mTLS, observability, and the service mesh pattern with Istio and Linkerd.

📖 3 lessons 🎯 None

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advanced

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Site Reliability Engineering (SRE)

SLIs, SLOs, error budgets, on-call rotations, and the SRE mindset for production reliability.

📖 3 lessons 🎯 None

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intermediate

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Snowflake — Cloud Data Warehouse

Snowflake architecture, virtual warehouses, semi-structured data, and cost optimization.

📖 3 lessons 🎯 None

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intermediate

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Solid.js — Fine-Grained Reactivity

Reactive primitives without a virtual DOM: signals, effects, and the performance-first Solid.js framework.

📖 3 lessons 🎯 None

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advanced

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Solidity — Smart Contracts auf Ethereum

Baue, teste und deploye dezentralisierte Apps mit Solidity, Hardhat und dem EVM-Ökosystem.

📖 3 lessons 🎯 Programming experience

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intermediate

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Speech Recognition with Whisper

OpenAI Whisper: speech-to-text, language detection, diarization, and production STT pipelines.

📖 3 lessons 🎯 None

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beginner

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SQL und Datenbanken — Vom Nullpunkt zum Query-Master

Lerne SQL von den Grundlagen bis zu fortgeschrittenen Abfragen. JOINs, Subqueries, Indizes und Performance-Optimierung.

📖 4 lessons ⏱ 15h 🎯 None

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intermediate

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Stable Diffusion — KI-Bildgenerierung

Generiere, steuere und passe KI-Bilder mit Stable Diffusion, ControlNet und LoRA an.

📖 3 lessons 🎯 Python basics

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💻 advanced

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Strangler Fig — Legacy Migration

Incrementally replace legacy systems with the strangler fig pattern.

📖 3 lessons 🎯 None

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advanced

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Supply Chain Security

SBOM, sigstore, SLSA, and securing the software supply chain end-to-end.

📖 3 lessons 🎯 None

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intermediate

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Svelte & SvelteKit — Compiled UI

Write less code with Svelte 5: runes, reactivity, and SvelteKit for full-stack apps.

📖 3 lessons 🎯 None

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intermediate

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Swift- und iOS-Entwicklung

Erstelle native iPhone-Apps mit Swift, SwiftUI und modernen Apple-Frameworks.

📖 3 lessons 🎯 Programming experience

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advanced

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System Design — Skalierbarkeit und Architektur

Skalierbarkeitsprinzipien, Caching, Load Balancing und Patterns für System-Design-Interviews.

📖 4 lessons 🎯 sql-databases, apis-rest, docker-containers

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intermediate

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Tailwind CSS v4 — Utility-First Styling

Master Tailwind CSS v4: the @theme directive, design tokens in CSS, and the new lightning-fast Rust engine.

📖 3 lessons 🎯 None

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advanced

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Terraform — Infrastructure as Code in der Tiefe

Provisioniere und verwalte Cloud-Infrastruktur deklarativ mit Terraform auf AWS, GCP und Azure.

📖 3 lessons 🎯 Cloud Computing basics

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intermediate

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Test-Driven Development mit Jest

Entwickle zuverlässige Software mit TDD, Unit-/Integrationstests und Jest in JavaScript/TypeScript.

📖 3 lessons 🎯 JavaScript or TypeScript

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advanced

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Theory of Computation

Automata, regular languages, context-free grammars, Turing machines, and computational complexity.

📖 3 lessons 🎯 None

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intermediate

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Time-Series with InfluxDB

Time-series workloads: InfluxDB, Flux queries, downsampling, and IoT pipelines.

📖 3 lessons 🎯 None

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intermediate

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TypeScript — JavaScript mit Superkräften

Statische Typisierung für JavaScript: Typen, Interfaces, Generics und fortgeschrittene Patterns, die in großen Projekten …

📖 3 lessons ⏱ 5h 🎯 javascript-modern

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advanced

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Unreal Engine for Programmers

Unreal Engine 5: C++ programming, Blueprints, Nanite, Lumen, and shipping games.

📖 3 lessons 🎯 None

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advanced

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Vektordatenbanken und RAG

Retrieval-Augmented Generation: Embeddings, Vektorsuche, Pinecone/Weaviate und Production-RAG.

📖 3 lessons 🎯 LLM basics, Python

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intermediate

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Vue.js — Progressives Frontend-Framework

Beherrsche Vue 3, die Composition API und das moderne Vue-Ökosystem für reaktive UIs.

📖 3 lessons 🎯 JavaScript fundamentals, HTML/CSS

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intermediate

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Web Accessibility (WCAG 2.2)

Build for everyone: semantic HTML, ARIA, keyboard navigation, screen readers, and WCAG 2.2 AA compliance.

📖 3 lessons 🎯 None

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intermediate

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Web Animations — GSAP & CSS

GSAP for complex animations, scroll triggers, and physics. Plus modern CSS animation features.

📖 3 lessons 🎯 None

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intermediate

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Web Components & Lit

Framework-agnostic UI with native Web Components and the Lit library.

📖 3 lessons 🎯 None

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intermediate

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Web Performance — Core Web Vitals

Master LCP, INP, and CLS: profiling, image optimization, code splitting, and the rendering critical path.

📖 3 lessons 🎯 None

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advanced

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WebAssembly — Hochleistungs-Web

Führe nativen Code im Browser aus mit WebAssembly, Rust und modernen WASM-Toolchains.

📖 3 lessons 🎯 JavaScript, Some C/C++ or Rust

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advanced

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WebGPU & 3D on the Web

WebGPU: the next-generation graphics API for the web. Compute shaders and modern 3D rendering.

📖 3 lessons 🎯 None

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intermediate

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