The Code That Got You Here Will Kill You There
You shipped in 10 minutes and now you've got traction. But can your foundation handle the growth?
I fix your tech before your tech breaks you
Most AI-generated code works fine at 10 users. At 1,000? What about 10,000?
That's where the gaps show up.
I've spent 9 years building production systems that handle scale, and I know exactly which gaps matter and which don't.
Book a Call
Let's talk about how I can help you scale your product without rebuilding.
You Shipped Fast. Now Scale It Up.
You Shipped in 3 Days
You used Cursor. v0. Claude. Bolt. Whatever worked. You shipped while your competitors were still arguing about tech stacks.
Now You've Got Traction
Users. Revenue. Real traction. The kind of growth that makes people take notice.
Time to Scale It Up
You built for traction. Now you're getting it. AI tools are incredible for shipping fast – but they optimize for "working demo," not "handles 1,000 concurrent users."
Real Money on the Line
When real money flows through your product, when users depend on you, when downtime costs thousands – the requirements change.
That's Where I Come In
I help you fill the gaps while you keep shipping features. No rewrites. No drama. Just surgical improvements that make your product ready for scale.
Fix It Before It Breaks
Your AI-generated codebase is a ticking time bomb. I'll show you exactly what's about to explode—and how to defuse it before your users notice.
The Gaps That Show Up at Scale
These aren't bugs in your code. They're common blind spots that appear when AI-generated products start handling real traffic and real money.
Silent Revenue Leak
Checkout works perfectly in Chrome during testing. Safari and mobile? Different story. Without proper error tracking, you don't even know it's happening. Could be 40% of your traffic hitting walls.
Refund Rate Climbing
Edge cases that didn't matter at 10 users become real problems at 100. Users hit unexpected behavior, request refunds. Chargeback fees add up. Your payment processor starts sending warnings.
Can't Charge Premium
Your product delivers real value but the experience feels inconsistent. That inconsistency keeps you charging $20/month when the value should command $200/month.
Customer Churn
You sign up 100 users. 60 churn in the first month because they hit edge cases you haven't seen yet. Your growth metrics look terrible even though your product concept is solid.
Support Costs Eating Profit
You spend 20 hours per week answering "why doesn't this work?" for scenarios that shouldn't happen. That's time you could spend building features or talking to customers.
Can't Test = Can't Optimize
You want to A/B test your pricing page. Takes three weeks to implement because components are tightly coupled. Your competitors are optimizing 12x faster.
What Happens When You Fill the Gaps
9 years building production systems that process real money at scale. I know which problems matter and how to fix them surgically.
No More Revenue Leaks
Every browser works. Every device converts. Proper error tracking catches issues before they become patterns. You stop losing revenue to silent failures.
Refunds Drop Dramatically
Edge cases get handled properly. Users get consistent experiences. Chargebacks become rare instead of routine.
Charge What You're Worth
Your product stops feeling janky. You can finally charge $200/month instead of $20. 10x revenue per customer.
Customers Stick Around
New signups don't churn. They stick because shit actually works. Your growth metrics look real.
Support Hell Ends
Common issues get fixed at the root. Support tickets drop 80%. You spend time growing the product instead of apologizing.
Ship & Test Fast
Add features in days without breaking old ones. Run A/B tests in hours instead of weeks. Optimize at the speed you need to compete.
Why I Know Which Gaps Matter
Enterprise Voice Platforms
Built voice platforms for Fortune 500 clients. Systems that can't go down. Where bugs cost millions. Where every edge case matters.
Financial Calculation Engines
Financial systems where accuracy isn't optional. Where every decimal point matters and errors are unacceptable. Where you learn to think about edge cases before they happen.
Marketplace Platforms
Platforms serving tens of thousands of concurrent users. Real-time transactions. Real money flowing through the system. Real consequences when things break.
Seen Products Scale Dozens of Times
I've watched products go from demo to production. The problems are predictable. The gaps are common. The fixes are surgical. I've done this before.
Problems Follow Patterns
AI-generated code isn't unique. The gaps that show up at scale follow predictable patterns. I know what to look for and how to fix it without rebuilding.
Nine Years Building Systems
Nine years building systems that process real money and serve real users. I've seen the patterns. I know which problems matter and which don't.
Let's Get Ahead of It
You've built something real. Let's make sure it's ready for what comes next.
I'm Key Hoffman. I've built enterprise voice platforms, financial calculation engines, and marketplace systems serving thousands of concurrent users. Now I help founders scale their AI-generated products without rebuilding from scratch.
Trusted by companies building products that can't afford to break
For The Nerds Who Want Details
Database & Performance
Database indexes. Query optimization. Connection pooling. Proper migrations. The boring stuff that keeps your database fast when you hit 10,000 users.
Monitoring & Debugging
Error tracking with Sentry. Performance monitoring. Logging that actually helps you debug production issues instead of guessing.
Security & Deployment
Environment variables done right. Secrets management. Docker for deployment consistency. The security basics that matter.
API & Authentication
Rate limiting on APIs. Input validation. Authentication that handles edge cases. The protective layers that prevent abuse.
Architecture & Testing
Modular architecture. Components you can test independently. Separation of concerns. The structure that lets you ship features fast without breaking old ones.
CI/CD & Automation
CI/CD pipelines that catch bugs before production. Automated tests that run on every change. Deployment strategies that minimize risk.
Optimization
Image optimization. Caching strategies. Lazy loading. Bundle size optimization. The performance tweaks that make your product feel fast.
The Boring Stuff
No magic. Just the boring stuff that prevents common problems at scale.
What Founders Say
Key is a Master engineer who employs the absolute best practices when it comes to software development. I have learned a lot from him and can't wait to continue working together in the future! Highly recommend him for any projects you need done with good quality and expert handling!!
Key is a top notch developer. He is patient and understanding in communicating aspects of development that I've struggled to learn myself. I've been a .NET developer for most of my career. Key helped me; 1) leverage what I know 2) integrated well-known design patterns, while 3) teaching me how to produce Enterprise quality apps. Need a great programmer? And a wealth of knowledge to guide your team? Call on Key.
Truly a one of a kind Developer that's dedicated to getting the job done while fighting for its users.
Key originally started as a regular Willow Voice user who gave feedback, but it was clear right away that he was a builder. He cared enough to roll up his sleeves and help, and he ended up building the early foundation of our iOS app entirely on his own time (and without ever being asked)! That work gave us real momentum at a crucial point, and parts of what he built are still in the product today. He's genuinely invested in what he touches. Would recommend him without hesitation :)
Lawrence Liu
CTO, Willow Voice
Ready to Scale Without Rebuilding?
Limited availability for fractional CTO work. Usually respond within 24 hours.
I'll review your product and get back to you with a plan.