Marlon Coreas · Independent software engineer
I took a native macOS app from idea to the App Store, and I build client websites that earn their place in search results. Everything I ship, I own end to end — product, code, and polish.
A new product in active development
Selected signals
Selected work
A native macOS product, a client growth platform, and the next idea currently taking shape.
Owned product · Native macOS
Owned product · Native macOS
A local-first archive workspace that lets Mac users browse, edit, compare, and extract ZIP, RAR, 7Z, TAR, and 30+ formats without the usual folder clutter.
Product direction · macOS development · Launch website
Client work · Growth websiteClient work · Growth website
A bilingual, search-ready website that turns a contractor’s craftsmanship into a clear digital sales experience for homeowners across the greater DMV area.
Digital strategy · UX/UI · Frontend development
Private product · In development
A meaningful new product is currently being designed, tested, and built. The details stay private for now; the work does not.
Research · Product design · Engineering
What I do
I combine product judgment with hands-on engineering, so decisions stay connected from the first sketch to production.
Native desktop software and focused digital products built around real workflows—not feature lists.
No templates, no bloat: hand-built sites that load fast, read clearly, and give search engines exactly the context they need.
The details around the product: bilingual content, structured data, deployment, and a maintainable foundation.
Working style
Good software is not just functional. It feels considered at every edge, communicates its value quickly, and remains easy to evolve after launch.
Clarify the user, the constraint, and what success actually means.
Turn deep functionality into an interface that feels calm and obvious.
Performance, accessibility, SEO, and maintainability are part of the product.
About
I’m an independent developer who likes hard product problems, quiet interfaces, and software that earns a place in someone’s daily routine. I can own the full journey or join a team where thoughtful execution matters.
Current toolkit
Have a useful problem?
Tell me what you’re trying to launch, improve, or untangle. A short note about the product, timeline, and goals is enough to start.