About Sherwindang
From one freelancer to a product company.
We've spent years as the development partner small businesses call when something needs fixing. Everything we build — for clients or as our own products — starts from a real operating problem.
Clients served100+
Countries10
Team members8
Our story
Every product we make today traces back to a client problem we solved by hand first.
Founder, Trung Dang
- 2016One laptop, one clientFreelance projects for small businesses abroad — websites, booking tools, small apps.
- 2019Hundreds of clients worldwideClients came back, then referred friends. We became the partner behind their operations.
- 2023Sherwindang, the teamDesigners and engineers who think like owners — a startup built on years of client work.
- 2025POSSO and ScheduleFlowThe problems we kept solving for hotels, restaurants and marketers became products.
- NEXTAI for how people buy and createAI commerce in POSSO, AI content in ScheduleFlow — and the same partner mindset for every client.
What we believe
Four rules every project and product follows.
Problem before code
We learn how the business runs before we write a line.
Small and useful first
Ship the smallest thing that helps, then improve it on real use.
Partners, not vendors
We stay after launch and give honest advice, even when it's “don't build that”.
AI that earns its place
We add AI where it saves real time for owners and customers.
The team
The people behind the agency, POSSO and ScheduleFlow.
- TDTrung DangFounder & CEO
- AGAgency teamDesign & engineering
- PSPOSSO teamProduct & support
- SFScheduleFlow teamProduct & AI content
Let's solve your problem together.
Tell us how your business runs today.