Beyond Vibe Coding

Combined slide deck: When the magic fades and reality sets in.

function vibeCode() { ... }
const magic = AI.create(app);
return app.build(idea);
async function deploy() { ... }
const result = await AI.help(quest);
if (error) { ... }
throw new Error();
function fix() { ... }

Beyond Vibe Coding

When the Magic Fades and Reality Sets In

The Irresistible Promise of Instant Creation

Jaehee Song, Founder of Startup Consulting Inc.

Who am I?

Jaehee Song

🧱
Implementer
🛠️
Builder
🧩
Solver
Staff Data Engineer at Visa | Executive Director at Seattle Partners LLC 20+ years architecting data platforms, machine learning systems, and AI solutions that unlock business impact.

The Irresistible Promise of Instant Creation

AI-assisted development has transformed how we build software, turning complex applications into projects that can be materialized within minutes through description and iteration.

The "Vibe Coding" Experience

Describe your vision and instantly receive a functional application with clean interfaces and smooth interactions.

Democratized Development

Anyone with a clear idea and decent prompting skills can create something tangible and professional.

Intoxicating Achievement

Feel like a technical wizard with real and immediate sense of accomplishment.

"It's intoxicating. You feel like a technical wizard, and the sense of achievement is real and immediate."

The Inevitable Reality Check

The trouble starts when you try to go deeper than basic functionality. What was once a straightforward build becomes a labyrinth of challenges.

"You're not just building anymore—you're debugging, architecting, and making decisions about things you barely understand."

The AI that seemed omniscient minutes ago now gives you solutions that work for one problem but break three others. You're stuck in a loop of fixing and breaking.

User Authentication

Implementing secure login systems is complex and error-prone

Payment Processing

Integrating secure payment systems with complex security requirements

Scalability

Handling more than ten simultaneous users reveals architecture flaws

Dependency Conflicts

Managing complex package dependencies and API rate limits

The Technical Labyrinth: Too Many Decisions

Moving beyond vibe coding isn't just about technical complexity—it's about navigating an overwhelming volume of consequential decisions that developers must make to transform a functional prototype into a production-ready application.

Security

  • • Password hashing
  • • OAuth vs JWT
  • • Rate limiting
  • • SQL injection prevention

Scalability

  • • Handling 10,000 users
  • • CDN implementation
  • • Caching strategies
  • • Database indexing

Performance

  • • Page loading speed
  • • Database queries
  • • API calls optimization
  • • Front-end rendering

Quality

  • • Code structure
  • • Test coverage
  • • Documentation
  • • Maintainability

Deployment

  • • Docker containers
  • • Kubernetes
  • • CI/CD pipelines
  • • SSL certificates

Legal

  • • GDPR compliance
  • • Accessibility
  • • Terms of service
  • • Privacy policy

Service Choices

  • • Database selection
  • • Cloud provider
  • • Auth services
  • • Ecosystem lock-in

Decision Impact

Each decision locks you into an ecosystem with its own learning curve, pricing model, and limitations. Choose wrong early, and you might need to rebuild later.

Security Challenges

The initial excitement of AI-assisted development gives way to complex security considerations that can open a rabbit hole of best practices and vulnerabilities.

Password Hashing

How to properly hash passwords to protect user credentials from being compromised in case of a data breach.

Authentication Protocols

What's the difference between OAuth and JWT? Choosing the right authentication method for your application's needs.

Rate Limiting

Implementing rate limiting to prevent abuse, brute force attacks, and ensuring fair resource distribution.

SQL Injection Prevention

How to protect against SQL injection attacks that can compromise your entire database.

Each security question opens a rabbit hole of best practices, vulnerabilities, and compliance requirements that vibe coding cannot adequately address.

What about OWASP Top 10?
How do I secure APIs?

Scalability Considerations

Moving from test data to thousands of users introduces critical infrastructure challenges. What works in development quickly becomes problematic at scale.

Development
Testing
Growth
Scale
Test Data
1,000 Users
10,000 Users
Thousands of Users

CDN Considerations

Content Delivery Networks become essential for global reach and performance. Cache invalidation strategies are critical.

Caching Strategies

Implementing effective caching requires understanding your data lifecycle and consistency requirements.

Database Indexing

Proper indexing is crucial for query performance but impacts write operations and storage requirements.

Cost Implications

Scalability challenges quickly spiral into significant cost implications. Cloud resources, CDN bandwidth, and database instances all scale pricing with usage.

Performance Optimization

Common Performance Questions

  • Why is the page loading slowly?
  • Is it database queries, API calls, or front-end rendering?
  • Should you optimize now or later?
  • What metrics even matter?

AI Limitations

AI-generated code often requires systems-level understanding that goes beyond basic functionality. The solutions suggested by AI may work for one problem but break others.

Diagnosis Challenges

Page Load Speed Slow
Database Queries Medium
Front-end Rendering Fast

Identifying the true bottleneck requires detailed analysis beyond AI capabilities.

Systems-Level Understanding

Performance tuning requires understanding systems at a level that vibe coding can't provide. This includes knowledge of databases, network architecture, and front-end optimization.

"Performance tuning requires understanding systems at a level that vibe coding can't provide."

Quality & Maintainability Issues

"The code works, but is it good? Can someone else understand it? Will you understand it in six months?"

Why Quality Matters

  • Technical debt accumulates when quality is ignored
  • Code is read far more than it's written
  • Maintenance tasks often outlast initial development
  • Quality impacts team productivity and morale

Readability

function processUserData(a,b,c){...}
function processUserData(users, settings, callback){...}

Clear variable names and structure make code understandable

Documentation

Proper documentation includes:

  • Code comments
  • API docs
  • README files

Testing

Effective testing requires:

  • Unit tests
  • Integration tests
  • End-to-end tests

Maintainability

Maintainable code is:

  • Modular and focused
  • Well-organized
  • Easily extensible

These questions feel tedious when you're excited to build, but become critical when you're trying to maintain or extend your creation.

Deployment & Operations Complexity

Getting your app running locally is one thing. Deploying it reliably is another universe entirely.

Containerization

Docker containers package your app with all dependencies, ensuring consistency across environments.

Orchestration

Kubernetes manages containerized applications at scale, handling scaling, load balancing, and service discovery.

CI/CD Pipelines

Automated testing, building, and deployment processes that streamline the release cycle.

Environment Management

Configuring environment-specific variables for development, staging, and production environments.

SSL Certificates

Securing communications with HTTPS certificates and key management.

Monitoring & Logging

Real-time application performance monitoring and centralized logging for troubleshooting.

"The production checklist is endless and intimidating. Docker, Kubernetes, CI/CD pipelines, environment variables, SSL certificates, monitoring, logging—the production checklist is endless and intimidating."

Legal & Compliance Requirements

For anyone building something beyond a personal project, these legal considerations aren't optional—they're essential.

GDPR Compliance

Required

For applications handling EU user data, ensuring proper data protection and user consent.

Accessibility

Essential

Meeting standards like ADA compliance to ensure your application is usable by everyone.

Terms of Service

Necessary

Legal agreements that define user responsibilities and protect your application from liability.

Privacy Policy

Required

Clearly communicating how user data is collected, used, and protected within your application.

These considerations become critical as your application moves from prototype to production, and from personal project to business asset.

Service Choice Consequences

Every service choice creates long-term implications that affect your application's evolution.

High Lock-in

Database Selection

Choose wrong, and you'll face migration challenges.

Consider scalability needs
High Lock-in

Cloud Provider

Early cloud decisions impact architecture and costs.

Evaluate vendor lock-in
Medium Lock-in

Auth Service

Authentication decisions impact user experience.

Consider user migration complexity

Long-Term Implications

Service choices create integration challenges

Early decisions have hidden cost implications

Architectural decisions affect future features

The Gap Between Building and Shipping

Despite functional MVPs, many vibe coding projects fail to reach production, stuck between the initial excitement and the systematic engineering required for deployment.

Building
Shipping
The Gap
Documented, solved issues
Different skill set required
Systematic thinking needed

The Reality Check

The problems aren't mysterious—they're documented issues that require a different approach than vibe coding.

Engineering Required

Moving beyond vibe coding means embracing systematic thinking and architectural decisions.

"You're no longer vibing. You're engineering. And engineering requires systematic thinking, architectural decisions, and often, expertise you simply don't have yet."

Common Frustration Points

Despite the initial excitement, AI-assisted development presents several common challenges that trip up developers.

Authentication nightmares

AI-suggested authentication systems often require significant customization to work reliably.

State management complexity

Managing application state in complex systems creates challenges that aren't adequately addressed by AI.

Database design pitfalls

Database designs that work for simple cases become bottlenecks under real-world usage.

Gap between AI suggestions and reality

AI solutions that work for one problem but break three others, creating a cycle of fixing and breaking.

"What frustrated you the most? Was it the technical complexity? The overwhelming number of decisions?"

Moving Beyond the Vibe

AI Assistance

Speed & Convenience

Balance

Engineering Knowledge

Depth & Control

Recognize AI Limits

Acknowledge where AI assistance becomes insufficient and engineering expertise is required.

Fill in the Gaps

Use systematic approaches to address the limitations AI leaves uncovered.

Develop Genuine Skill

Build expertise to complement AI capabilities with deep technical understanding.

"The magic is still there; it just needs to be tempered with skill."

Sustainable development through balanced approach

Let’s Connect

Jaehee Song

jsong@koreatous.com linkedin.com/in/jaehee-song-happy www.ai-biz.app apps.ai-biz.app
Ready to master Vibe Coding?

Join the Vibe Coding Boot Camp in Bellevue & Seattle.

Transform your ideas into reality with AI-powered development.

1 / 16