Modernize legacy systems while your team keeps shipping.
Aging stacks brought current. On live products, with no feature freeze. Outcome-based pricing.
Companies in my work history
Sound familiar?
Afraid to deploy
The app hasn't been updated in years. Every change risks breaking something. Deployments are manual and terrifying.
Can't hire for it
Nobody wants to work on the old stack. The developers who know the system are leaving. New hires take 6 months to ramp up.
Consultancies want 12 months
You're looking at a year-long engagement with a full team. You need one application modernized in 2 to 4 months.
Three ways to work with me
Start with one free call. Talk through what needs to change.
Strategy Call
Tell me about your system. I'll give you my read on the risks and where to start. If I'm not the right person, I'll say so.
- ✓ One free call
- ✓ A first read on the risks
- ✓ What to tackle first
- ✓ An honest read on fit
- ✓ No commitment required
Targeted Project
Modernize one application. Fixed scope, 2 to 4 months, outcome-based pricing.
- ✓ One legacy application modernized
- ✓ Fixed scope and timeline
- ✓ Outcome-based pricing
- ✓ Full documentation included
- ✓ Team training on the new system
Full Transformation
Modernize your entire stack. Upskill your team. 3 to 6 months. You come out the other side on modern infrastructure with a team that knows how to maintain it.
- ✓ End-to-end stack modernization
- ✓ Team upskilling and modern workflow training
- ✓ Modern CI/CD and deployment pipelines
- ✓ Complete documentation and runbooks
- ✓ Post-engagement support period
What it looks like in practice
Replaced weeks of manual document coordination with a self-serve intake system. What took multiple people and endless emails now takes one person 10 minutes.
I replaced 8+ hours of daily manual data aggregation with a report ready before the team started work. Took weeks.
I upgraded an 11-year-old GDPR platform's backend and rebuilt its frontend while regulatory features kept shipping. Production servers are down from 4 to 2.
Read the case study →The math
Two ways to look at legacy modernization
- ×Six figures per year in maintenance on systems that don't improve
- ×Developer turnover because nobody wants to maintain legacy code
- ×Features your customers need that you can't ship
- ×Security vulnerabilities compounding every quarter
- ×Technical debt that gets more expensive the longer you wait
- ✓2 to 4 month timeline, start to finish
- ✓Outcome-based pricing tied to results you can measure
- ✓Your team upskilled on the new system and modern workflows
- ✓Modern stack your developers actually want to work on
- ✓Full documentation and runbooks included
15 years of enterprise delivery
"Partnering with Matt over several years at eVestment was a seamless experience. I never had to worry about any project he was involved in. His work was always executed quickly and thoroughly. He effectively managed an entire product line by himself, demonstrating exceptional reliability and expertise."
"During his time at Balto, Matthew consistently impressed me with his expertise in robust, efficient, and scalable solutions for our projects. His proficiency in crafting solutions and AWS made him an invaluable member of our team."
"What stands out is the quality of Matt's solutions. When others might take shortcuts, Matt engineers clean, maintainable solutions that stand the test of time. His code is something you can build on, not something you have to work around."
Hi, I'm Matt.
15 years building enterprise systems. I've worked with companies across financial services, pharma, ad tech, and music rights.
I started Katyella because legacy modernization projects don't need 6-person teams and year-long timelines. The right experience and the right tooling can deliver what used to take a department.
Every engagement comes with documentation, team training, and a system your developers can actually maintain after I'm done.
Katyella episodes and migration guides
Nina and I talk through what we're building on Katyella, and my written guides cover technical migrations in detail.
Episode 5 · October 2, 2026 · 50:39
I Shouldn't Anger the Time Zone Gods
All episodes →Book your strategy call
Tell me about your system on a free call. I'll give you my read on the risks and what to tackle first. If I'm not the right fit, I'll say so. No commitment required.
Book a Strategy CallOr email contact@katyella.com