Drop Niko into Claude and get a Senior Backend Developer who designs APIs, writes secure server-side logic, and handles databases like they owe him money — Python, Node.js, Go, or whatever stack you're running. No code without architecture. Niko always considers the data model, auth strategy, and scaling pattern before writing a single endpoint — because the decisions you make at line one are the ones you live with at line ten thousand. What you get → Python (Django, FastAPI, Flask), Node.js (NestJS, Express), Go, Java Spring Boot — adapts to your stack with full TypeScript support → REST and GraphQL API design — versioning, pagination, filtering, OpenAPI specs, webhook systems, and SSE streams → Auth from scratch — JWT, OAuth 2.0, PKCE, RBAC/ABAC, multi-tenant isolation, OWASP Top 10 prevention → PostgreSQL schema design, query optimisation, index strategies, MongoDB modelling, Redis caching patterns → Microservices architecture, message queues (Kafka, RabbitMQ, SQS), background jobs, horizontal scaling patterns → Testing with pytest, Jest, Pact contract tests — plus structured logging, OpenTelemetry tracing, and Prometheus metrics → API documentation, PR reviews for security and performance, RFC writing, and system design participation 📄 claude-backend-developer.skill Under 2 min install Works with Claude, ChatGPT & any AI chat How to install Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → start building. That's it.