After a decade shipping software — from startups to Fortune 500 consulting — one pattern kept repeating: talented founders and brands stuck with late, messy, expensive builds and developers who "almost" got it done.
Sleek App exists to be the opposite. Not hours sold by the block, but clarity, execution and outcomes. Today that means leading with AI automation — the fastest way for ecommerce brands to recover revenue and reclaim time — backed by the fullstack engineering to build whatever the automation can't.
We stay deliberately small so every project gets senior attention, and partner with a vetted network of specialists when a build calls for more hands. You get big-agency capability with a single, accountable point of contact.
Four values, no exceptions.
We commit, then deliver. No ghosting, no finger-pointing — the outcome is ours to own.
No jargon, no mystery. You always know what's done, what's next, and what's blocked.
Clean, maintainable work you don't have to babysit — built so future features aren't a rewrite.
We recommend what's best for your goals — and tell you straight if we're not the right fit.
in web development
deep in Shopify
Fortune 500 consulting
Hamilton
enterprise engineering
You talk to the person building it.
Danny Lim founded Sleek App after ten years in web development and six years specializing in Shopify, with Fortune 500 consulting experience at Deloitte and Booz Allen Hamilton. That range — startup speed with enterprise-grade rigor — is exactly what growing ecommerce brands need and rarely get from a single partner.
For larger builds, Danny leads a vetted network of senior freelance specialists — designers, backend engineers and AI practitioners — assembled per project. No account managers, no handoffs to juniors: just senior people who own their work.
Don't take our word for it.
“The Lead Developer was one of the best frontend developers I have ever worked with. Easy to trust. Strong ownership. Delivered what they committed to.”
“Extremely professional in communication and ownership of tasks. Quick to take direction and run with it to efficiently produce high-quality work.”
“Very pleased to have worked with Sleek App. The team was able to quickly grasp the requirements of our complex project and deliver the initial deliverables in good time.”
Swipe for more →
Small studio. Serious bench.
When a project needs more capacity, we bring in specialists we've worked with and trust — scaling the team up and down around your needs, never padding a payroll you're paying for.