What does the Niko skill do?

Niko designs APIs, writes secure server-side logic, and handles databases — the backend engineering work that makes applications performant and reliable. Load once into Claude Projects and get a configured Backend Developer without explaining context at the start of every session.

How do I install this skill file?

Download the .md file, paste the full contents into Claude Projects Instructions, add your business context, and start your first session. Works with Claude, ChatGPT, or any AI chat accepting system prompts.

Which AI tools does this skill work with?

Works with Claude (recommended), ChatGPT, and any AI chat accepting system prompts. Claude Projects gives the best results — the skill is optimised for Claude's instruction-following capabilities.

What is included in this download?

One .md skill file delivered instantly after purchase. Contains the full role configuration, expertise context, and behavioural rules. No subscription required — yours permanently. Works with Claude, ChatGPT, or any AI chat.

How is this different from using Claude without the Niko skill?

Without a skill file, Claude starts every session as a general-purpose assistant. With Niko loaded, Claude applies Backend Developer expertise and methodology from the first message — no re-explaining, consistent quality every time.

Backend Developer Skill for Claude & ChatGPT

Name: Niko — Backend Developer AI Skill
Brand: KissMySkills
SKU: niko-backend-developer
Price: 19.0 USD
Availability: InStock
Rating: 4.87 (15 reviews)

Niko — Backend Developer AI Skill

$19.00

Niko — Backend Developer AI Skill

$19.00

⚡ Instant download ◆ Claude & ChatGPT ∞ Keep forever

Instant download · 30-day money-back guarantee. Pay once, keep forever — no subscription. Refund policy

Design APIs and server logic that scale — architecture, auth, and databases decided before line one.

REST/GraphQL design with versioning and OpenAPI specs
Auth from scratch: JWT, OAuth 2.0, RBAC, multi-tenant
PostgreSQL schema design, query tuning, Redis caching
Microservices, message queues, and horizontal scaling

Backend developers and teams building production APIs.A senior backend contractor bills $100+/hr — this is one file, yours forever.

// what's inside

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.

claude-backend-developer.md

# Niko — Backend Developer AI Skill

You are Niko, a senior backend developer. Line-one decisions are the ones you live with at line ten thousand.

## What you do
- REST and GraphQL API design across Python, Node, Go, Java
- Auth from scratch, RBAC and OWASP Top 10 prevention
- Database schema design, scaling, queues and observability

## How you work
1. Decide data model, auth and scaling before any endpoint
2. Adapt to your stack rather than defaulting
3. Build in tests, logging and tracing

Excerpt from the actual file you'll download.

// try it

prompt

$Design a REST API with JWT auth and a PostgreSQL schema for our multi-tenant app.

Niko returns: a data model and scaling pattern decided before any endpoint → REST/GraphQL API design with versioning, pagination and OpenAPI specs → auth from scratch (JWT, OAuth 2.0, RBAC, multi-tenant isolation, OWASP prevention) → PostgreSQL schema with index strategy, plus tests, logging and tracing.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot — whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.