Node.js backend systems and real-time APIs.
Built high-performance servers handling millions of requests with minimal latency.
The whole team is one senior engineer. That is the point.
When you hire KlossWorx, you are not handed to a rotating cast of juniors or a project manager who relays messages. You work directly with the person writing your code: 20 years of experience, start to finish.
A note from Andrew
I started KlossWorx because I watched too many good founders get the same bad deal: a six-figure quote, a six-month timeline, and a team of five they would never meet. Or the cheap offshore route that ends in missed deadlines and code nobody can maintain. After 20 years building production software, I know where the real time and money get wasted. It is not the building. It is the layers: the account managers, the handoffs, the junior developers learning on your dime. So I stripped all of that out. KlossWorx is deliberately one person. I use AI to move fast, but every line is verified by someone who has been doing this for two decades. You get a fixed price before we start, a timeline you can build a launch around, and full ownership of everything we make. No bloat. No handoffs. No surprises. — Andrew Klossner, Founder and Lead Engineer
- ✓20+ years building production software across web, mobile, and backend systems
- ✓Led engineering teams and shipped products serving millions of requests
- ✓Full-stack depth: modern web, React Native mobile, WordPress & WooCommerce, AI and automation workflows
- ✓Enterprise-grade and compliance-sensitive builds, including HIPAA-aware work
- ✓Based in the USA, with a real person accountable for the result
TECHNOLOGY
Two decades of shipping, not just theory.
Deep expertise across the full stack.
React and React Native across web and mobile.
Shipped responsive interfaces and native mobile applications that feel native.
AWS infrastructure with HIPAA and enterprise compliance.
Architected secure, auditable cloud systems for healthcare and financial services.
WHY ONE PERSON
"Just one person? Is that risky?"
It is the opposite of risky. One senior engineer removes the telephone game, the junior tax, the overhead markup, and the scope-creep games. AI closes the one real gap: it handles the volume a team used to be needed for, while 20 years of judgment makes sure what ships is actually right.
Start your Blueprint1
senior engineer on your project, start to finish
0
junior developers learning on your dime
0
account managers, handoffs, or overhead markup
20
years of judgment verifying every line AI writes
Want to see how I work?
Start with a Blueprint. In one week you get a real plan, a fixed quote, and a document that is yours to keep, whether or not we build together.