10 Production AI Prompts That 10x My Coding Speed as a Full-Stack Engineer

ROLE: You are a TypeScript Core Contributor.
TASK: Migrate the following JavaScript code to strict, idiomatic TypeScript 5.
<constraints>
- Strict mode: Zero `any`, zero `unknown` without type narrowing, zero unsafe type assertions.
- Model all domain states using discriminated union types.
- Ensure all function arguments and returns are strictly typed.
- Analyze and state the time and space complexity (O(n) bounds).
</constraints>
[PASTE YOUR JAVASCRIPT CODE HERE]

ROLE: You are a Principal Frontend Architect.
TASK: Split the following monolithic React component into optimal Server and Client Component boundaries in Next.js 15 App Router.
<constraints>
- Keep all database querying and data fetching in React Server Components (RSC).
- Move interactive UI (modals, dropdowns, form states) to minimal leaf Client Components marked with 'use client'.
- Implement React Suspense boundaries with skeleton fallbacks for async data streaming.
</constraints>
[PASTE YOUR COMPONENT HERE]

ROLE: You are a Staff FinTech Engineer.
TASK: Construct an idempotent Stripe Webhook route handler in Next.js 15 App Router.
<constraints>
- Verify cryptographic stripe-signature against STRIPE_WEBHOOK_SECRET using stripe.webhooks.constructEvent().
- Implement database idempotency: if event ID exists within 24h, return HTTP 200 immediately.
- Handle checkout.session.completed and customer.subscription.updated atomically inside a transaction.
- Include structured error logging.
</constraints>

ROLE: You are a Senior PostgreSQL DBA.
TASK: Analyze the following query and execution plan output.
Context: Table has 5,000,000 rows.
<constraints>
1. Pinpoint the exact bottleneck (Seq Scan, Hash Join disk spill, sorting).
2. Recommend the exact composite or partial index to eliminate the scan.
3. Rewrite the query if subqueries can be replaced with window functions or CTEs.
</constraints>
[PASTE QUERY AND EXPLAIN ANALYZE OUTPUT HERE]

ROLE: You are a Principal Machine Learning Engineer.
TASK: Write a leak-free feature engineering pipeline in Python using Scikit-Learn ColumnTransformer.
<constraints>
- Fit transformations strictly on training folds to prevent data leakage.
- Handle skewed numerical values with log or robust scaling.
- Encode high-cardinality categoricals with out-of-fold target encoding.
- Save the fitted pipeline artifact using joblib with schema validation.
</constraints>

ROLE: You are an Application Security Penetration Tester.
TASK: Audit the provided endpoint for OWASP Top 10 vulnerabilities (SQLi, IDOR, XSS, SSRF).
<execution_format>
1. Vulnerability description and CVSS score.
2. Concrete exploit scenario.
3. The exact code patch to secure the vulnerability.
</execution_format>
[PASTE CODE OR ROUTE HANDLER HERE]

ROLE: You are a Principal DevOps Engineer.
TASK: Write a minimal, multi-stage Dockerfile for a Next.js / Node.js web application.
<constraints>
- Stage 1: Dependency resolution with caching (`npm ci`).
- Stage 2: Production compilation with standalone output.
- Stage 3: Minimal Alpine runner executing as non-root user (`USER nextjs:nodejs`).
- Target image size: Under 120 MB.
</constraints>

ROLE: You are a Lead UI/UX Engineer.
TASK: Build an accessible multi-step form state machine with strict Zod cross-field validation.
<constraints>
- Define strict Zod schema with custom error messages and dependent cross-field validation.
- Prevent unnecessary re-renders of unaffected inputs.
- Provide full ARIA accessibility (aria-invalid, aria-describedby, role='alert').
- Style using Tailwind CSS with clear focus-visible and error states.
</constraints>

ROLE: You are a Distributed Systems Engineer.
TASK: Implement a sliding-window rate limiter in Python/Node using Redis Lua scripts.
<constraints>
- Track request timestamps per API key/IP address inside a Redis Sorted Set (ZSET).
- Evict expired timestamps older than the sliding window before counting.
- Ensure the check-and-increment operations run atomically in a single Redis roundtrip.
</constraints>

ROLE: You are a Database Security Architect.
TASK: Write Row Level Security (RLS) policies for a multi-tenant B2B SaaS application.
<constraints>
- Restrict SELECT, INSERT, UPDATE, DELETE to authenticated users belonging to the tenant.
- Prevent recursive policy evaluation loops by wrapping membership verification inside a SECURITY DEFINER function with STABLE caching.
</constraints>
[PASTE YOUR SQL TABLE SCHEMAS HERE]