Stuck on a legacy platform? Overpaying for bloated SaaS? Stalled trying to ship something you built with AI? CodeShift AI uses supervised AI agents to modernize, replace, and launch software—without the meetings, manuals, or months of traditional consulting.
Your critical application runs on outdated platforms—WinForms, Visual Basic, Java legacy systems—where developers are scarce and expensive.
The original developers have moved on, and there's little to no documentation. Your team is afraid to touch the code.
Locked into Windows-only desktop apps when you need web and mobile accessibility for modern business workflows.
Running unsupported software versions with known vulnerabilities, putting your business data and compliance at risk.
Traditional rewrite projects take 12-18 months and cost hundreds of thousands. You need a faster, more affordable solution.
Unable to add new features or integrate with modern systems. Your software has become a competitive liability.
Paying hundreds per month for platforms packed with features you'll never use. You need 10% of the tool but pay for 100%.
Your data and workflows live on someone else's platform. Price hikes, feature cuts, or shutdowns—and you have no control.
Whether we're modernizing legacy code or replacing an overpriced SaaS tool, our supervised AI agent methodology delivers professional-grade results in a fraction of the time and cost.
Tell us what you need—share your source code, walk us through your current tools, or both. Our AI agents analyze what you have, what you actually use, and what the best path forward looks like—no lengthy meetings required.
AI agents do the bulk of the work—whether that's transforming legacy code or building something new from scratch. An expert engineer supervises every step, so what ships is production-quality code—not AI-generated slop.
We build your solution using modern, maintainable technology stacks—whether it's a full application rebuild or a lean custom tool to replace what you're overpaying for.
Receive a fully functional, tested application with clean, documented code. Your team can maintain and extend it, or we can provide ongoing support and feature development.
Transforming a 15+ year old Windows desktop business application into a modern Progressive Web App
A business was running their entire operation on a Windows-only WinForms C# desktop application. The system was critical to operations but faced major limitations:
CodeShift AI transformed the legacy application into a modern Progressive Web App with:
BEFORE: Legacy WinForms Desktop UI
AFTER: Modern PWA Interface
Complete operational workflow from data intake to processing and reporting
Payments, transaction processing, and comprehensive financial reporting
Staff can manage operations from tablets and phones anywhere in the organization
Modern authentication with role-based access control and audit trails
Outcome: The client now operates on a modern, maintainable platform that supports their business growth with cross-platform accessibility, enhanced security, and the ability to rapidly add new features. The application is cloud-ready and positioned for future expansion.
Most small businesses pay for bloated SaaS platforms packed with features they'll never touch. We build lean, custom alternatives that do exactly what you need—at a fraction of the ongoing cost.
$200, $500, $1,000+ per month for a platform where you use maybe 10% of the features. That adds up fast.
Overwhelming dashboards, features your team never uses, and a learning curve that wastes everyone's time.
Your data lives in someone else's platform. Price hikes, feature removals, or shutdowns—and you have no control.
Tell us what you actually use your current tool for. We strip away the bloat and build a clean, custom solution that does exactly that—hosted affordably, fully yours.
Replace expensive subscriptions with affordable hosting—often under $20/month.
Simple tools built in days or weeks, not months. No lengthy contracts or discovery phases.
Your code, your data, your hosting. No vendor lock-in, no surprise price hikes.
No feature bloat. A clean tool your team understands and uses.
"It looks seriously professional and seems to work wonderfully."
— Unsolicited feedback from a colleague of our beta clientYou used Claude, Cursor, v0, Lovable, or Replit to build something that actually works. Now you're stuck on deployment, hosting, accounts, or infrastructure. We get it across the finish line—and hand you the keys.
Your code runs locally but you can't figure out hosting, environment variables, or build pipelines. The momentum dies the moment you hit "deploy."
Accounts to create, API keys to manage, DNS to configure, auth to wire up, databases to provision. Each step looks simple until it isn't.
Is it secure? Will it scale? What about backups, SSL, and monitoring? You don't want your first real users to be your QA team.
Send us what you've built—a GitHub repo, a Replit/Lovable link, or even a folder you dragged off your desktop. We review it, deploy it to production-grade infrastructure you own, and walk you through how everything works.
Quick audit for security gaps, leaked secrets, and obvious bugs—so you don't ship something that breaks the first time someone uses it.
Everything provisioned under your ownership—Vercel, AWS, Cloudflare, whichever fits. No vendor lock-in to us. Full handoff.
Fixed scope and a predictable price, agreed before we start—so you can stop staring at the deploy button and start showing real users.
You'll understand exactly what we did and how to manage it going forward. No black boxes, no "call us every time something breaks."
From aging desktop platforms to modern web and mobile stacks. If yours isn't listed, ask—we'll tell you straight whether it's a good fit.
Supervised AI is only as good as the engineer supervising it. Here's who's doing the supervising.
Founder · Principal Software Engineer & AI Architect
CodeShift AI was founded by Josh King, a Principal Software Engineer and AI Architect with 15+ years stewarding high-stakes software—from streaming platforms to enterprise systems serving millions of users.
As a Principal Engineer at a Fortune 500 telecom, Josh pioneered an AI-assisted development workflow that delivered a feature estimated at 33 days in a day and a half—fully tested, to enterprise standards. CodeShift AI brings that same discipline—supervised AI with genuine human oversight—to small and medium businesses.
He's spent his career modernizing legacy codebases—Angular-to-React migrations, design-system overhauls, and auth and API rewrites—and now builds the autonomous multi-agent systems that power CodeShift AI's modernization work.
Much of his recent work centers on the exact problem CodeShift AI solves for clients: helping teams ship AI-generated code safely—with the review, guardrails, and human oversight it needs.
Based in Castle Rock, Colorado.
Connect on LinkedIn →Common questions about modernizing legacy software, replacing overpriced SaaS, and shipping AI-built prototypes to production.
CodeShift AI is a software service for small and medium businesses. We modernize legacy applications, build custom replacements for overpriced SaaS tools, and deploy AI-built prototypes to production. The work is done by supervised AI agents, personally overseen by an experienced principal engineer, so you get production-quality software in a fraction of the usual time and cost.
No. AI agents handle the heavy lifting, but an experienced engineer reviews and supervises every step for security, code quality, and maintainability. You get clean, documented, production-ready code—reviewed by a human who is accountable for it.
We migrate applications from WinForms, Visual Basic, legacy Java, Classic ASP, PowerBuilder, Delphi, FoxPro, and Microsoft Access, among others. We typically rebuild them as modern React or TypeScript web apps, Progressive Web Apps, or cross-platform mobile apps.
A traditional rewrite often takes 12 to 18 months and costs hundreds of thousands of dollars. Because supervised AI agents do most of the work, CodeShift AI delivers comparable modernizations in a fraction of that time and cost. Exact timelines and pricing depend on the application, and we provide a free initial code analysis and estimate before any commitment.
Yes. If you use only a fraction of a costly SaaS platform, we build a lean custom tool that does exactly what you need. Common examples include mailing lists, CRMs, scheduling and booking systems, and reporting dashboards. Hosting often costs under $20 per month, and you own the code and data outright.
Yes, that is our Launch Assist service. Send us a GitHub repo, a Replit or Lovable link, or even a local folder, and we review the code, harden its security, deploy it to production under your own accounts (Vercel, AWS, Cloudflare), and give you a plain-English walkthrough. Each launch is a fixed-scope engagement, designed to finish in days, not weeks.
Yes. Everything we build or deploy is yours: your code, your data, and infrastructure provisioned under your own accounts. There is no vendor lock-in to CodeShift AI.
We focus on small and medium businesses. Our model is built to deliver professional-grade software affordably and quickly, without the meetings, manuals, and multi-month timelines of traditional enterprise consulting.
Just tell us what you have: share your source code, your current tools, or a prototype. No documentation or lengthy meetings are required. We provide a free initial analysis and a clear plan. You can reach us through the contact form or at [email protected].
Whether you need to modernize a legacy application, replace an overpriced SaaS tool, or ship something you built with AI, we'll assess your situation and give you a clear plan—no meetings required unless you want one.
Prefer email? Reach us at [email protected]