Custom portals, booking systems, and business tools — scoped, built, and delivered under your brand. Your client never hears our name unless you want them to.
These are the exact conversations that land on our desk from agency owners.
A portal, a booking system, an internal tool. You could refer it out — but then it's not your relationship anymore, and it's not your revenue.
Freelance platforms are a gamble. You need someone who delivers on time, communicates like part of your team, and never contacts your client directly.
Without an engineer in-house, you're guessing at cost and timeline — and guessing wrong makes you look bad in front of the client.
Client portals, booking systems, internal tools, marketplaces, property management systems, support ticket systems — built under your brand, delivered on your timeline.
Your client only ever hears from you. We never contact them directly, never put our name on the invoice, and you can credit us or not — your call.
No account managers relaying messages. You talk straight to the engineer doing the work and get straight answers back.
You get a clear quote and timeline before we start — so you can quote your client with confidence instead of a guess.
4+
Years building production software
20+
Projects delivered
6
Public case studies
Six case studies. Real platforms, real users, real problems solved under an agency's brand. Three below — see all six in our portfolio.
A full multi-tenant client portal with strict data isolation per organization, a three-role permission system, and complete property and tenant management workflows — from listings through lease management to maintenance requests.
View Case Study → Backend Scaling & AutomationA custom page caching layer, a queue-based availability sync running every 5 minutes, and an async OpenAI translation pipeline for listing content.
View Case Study → Marketplace & PaymentsA flexible role-permission system for vendors, admins, and support staff, and a multi-gateway payment architecture spanning Stripe, PayPal, and manual settlement.
View Case Study →Simple to start. No long onboarding. No layers of account managers.
Send over what your client needs, even if it's rough. Book a free 30-minute call and we'll turn it into a clear technical scope — no charge, no obligation.
A fixed-price quote and timeline you can count on. No fluff, no vague estimates.
We work in your tools, on your timeline, and loop you in at every milestone — no surprises, no scope creep.
Documented, maintainable, and ready for the next project or ongoing support.
We plug into how you already run projects — you don't change your process to fit us.
We work in whatever you already use for project tracking and communication — Slack, Trello, Asana, email. No new system to learn.
Weekly check-ins, milestone demos, or a quick async update — you set the reporting cadence that fits how you run client work.
Once we know how your agency operates, every future build starts faster — no re-explaining your process to a new freelancer each time.
Webstaller is led by Sharjeel Nadeem, who's spent 4+ years building production software — booking platforms, marketplaces, multi-tenant SaaS. The systems where real users, real payments, and real data all have to hold up at once. Every project is scoped, overseen, and delivered under his direct accountability — backed by the engineers doing the build.
We work directly with agency owners, not through layers of account managers. When you need a technical answer, you get it straight and fast — or we're on the call with you.
We plug in as an extension of your team: your tools, your timeline, your way of working. You stay in control. We're the team behind you — your client never has to know we exist.
“I recommend Sharjeel who is very professional and who helped us at the very beginning of our project. He helped us set up the first brick. Sharjeel is a great guy.”
Mitsualti Pidou · via LinkedIn →