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59 tools and skills, grouped by kind. Pick one to see where it shipped.
Languages and frameworks
TypeScript / JavaScript
React
Next.js
React Native / Expo
Node.js
NestJS
Go
Rust
Java / Spring Boot
Python
Express
Swift
Redux / Zustand
Tailwind CSS
APIs and architecture
Microservices
Event-driven systems
Event sourcing
RabbitMQ
REST APIs
GraphQL
WebSockets
SSR and code splitting
Offline-first mobile
Push notifications
Payments and fintech
PCI-DSS compliance
Plaid
SumSub KYC
Apple Pay / Google Pay
Multi-currency wallets
Payment aggregation
Data and security
PostgreSQL
MySQL
Redis
MongoDB
Supabase / Firebase
JWT / OAuth2
RBAC
Rate limiting
SOC 2 controls
Cloud and infrastructure
AWS
Google Cloud
Kubernetes (EKS)
Docker
Terraform
Linux
CI/CD (GitHub Actions, Jenkins)
Prometheus
Git
AI engineering
RAG workflows
ML inference orchestration
Vector databases (pgvector, Pinecone)
OpenAI API
Anthropic Claude API
LangChain / LlamaIndex
Model Context Protocol (MCP)
Hugging Face
TensorFlow / Keras
Prompt engineering and LLM evals
Claude Code / Cursor