White-label tech partner
FusionSync partners with agency owners who already serve a vertical. We white-label the product, wire local integrations, and run white-glove implementation for each of your clients. You never sell to strangers. We never steal your clients.
Per-client implementation from $300 after your client pays. Volume support discounts up to 40%. See full pricing
FusionSync is a white-label tech partner for marketing and service agencies. We fulfil vertical software, CRM integrations, and per-client implementation so agency owners can productize their offer without hiring a dev team. Delivery uses GoHighLevel, n8n, custom software, and local practice-management bridges.
Shubham Kashyap
Tech partner · FusionSync
Top Rated Plus on Upwork
(35+ deliveries)
Agency owner with a vertical and a tech gap
3-day demo on GHL + n8n · pitch ready
Tier pricing · only when a client pays
White-label software after proof
25 clients · your market · 100 · global
White-glove ops or full handoff
Client video testimonial
Guliver Kalamba runs MeisterFlow for Swiss home-service operators. FusionSync built the multi-tenant booking, invoicing, and SEO platform he ships today on app.meisterflow.ch.
“Building a SaaS platform is challenging. Shubham consistently came up with smarter, more scalable solutions and was always thinking several steps ahead.”
Guliver Kalamba
MeisterFlow owner · Switzerland
Who this is for
You already sell marketing, ops, or consulting in a vertical. Your clients ask for software, CRM bridges, or automation you cannot fulfil in-house. That is the gap we fill. We are not looking for solo founders or cold prospects. We partner with operators who already have demand.
Dental, insurance, real estate, creator monetization, or another niche you know deeply. Not leads. Active accounts.
Clients ask for software, integrations, or patient workflows you cannot ship without a tech team.
Enough clients in pipeline that white-label fulfilment beats hiring developers or saying no.
You know what software your market runs. We build the bridge. You guide where it connects.
Not for: idea-stage founders, speculative builds, or partners with no signed clients yet.
From custom builds
Selling multiple bespoke AI offers? Pick the scope that sold twice, get a free demo under your brand, and move onto the partnership path with published tiers.
See the transition pathThe partnership offer
Don't build a product to start a business. Build a business first, then earn the product.
Watch Shubham explain this on videoStarting point
Agency owner with clients ready to pitch
Agency owners who already have paying clients or real prospects ready to pitch in one vertical. Not cold outreach pipelines, not idea-stage founders. You did not start your agency to become a software company. You started because you are good at getting clients results. The clients who need tech either get turned down or get something cobbled together. That gap is costing you contracts.
Phase 1
We build a working demo scoped to your vertical and client type. It runs on GoHighLevel, n8n, and the integrations your market needs. Not custom software yet. You pitch it to clients you already have. One free POC per vertical. Your next free POC unlocks after your first ownership milestone (25 active clients).
Phase 2
Implementation starts only after a client is paying you. Same productized tiers as standalone: simple, mid-complexity, or full stack. Early clients stay on the proven stack so delivery stays fast and consistent. Volume discounts apply to monthly support as your active client count grows.
Phase 3
Once the model works across your base, we build production-grade software under your brand: auth, billing, tenant isolation, and UI your clients see as yours. You focus on growing the client base. We handle architecture, build, and migration from the stack path.
While you scale in one geography, we can replicate the same playbook with a new local partner in the next market.
As your active client base grows, you earn the right to own the software. Ownership is optional at each milestone. You can stay on the recurring model indefinitely.
25 active clients
Own the software for your geography and vertical plus tech stack combination. FusionSync will not build the same solution for competitors in your geography. Transfer fee: $5,000 optional.
We step back from that geography for this vertical.
100 active clients
Own the software globally for your vertical plus tech stack combination. Battle-tested product with a proven client base, not just code. Transfer fee: $15,000 optional.
We replicate the model in the next market with a new partner.
Two clean paths after ownership (or anytime you prefer fulfilment over hiring). Most partners keep Path A because ops is the hard part to staff.
Path A
FusionSync stays on as your invisible tech partner. We maintain the product, handle updates, infrastructure, and scaling. Per-client recurring continues plus a product maintenance fee (baseline $500/month, scoped to complexity).
Path B
Full documentation, codebase handover, and training sessions included in the transfer fee. Clean exit with no ongoing obligation. Additional training at $40/hour.
Either way, you walk away with a tech layer inside your agency that your competitors cannot match.
Division of work
You (the agency owner)
FusionSync (silent tech partner)
Partnership proof
Real engagements where an operator brought demand and we fulfilled the tech layer. Names anonymized where needed.
UK dental marketing agency
Validated dental client acquisition on n8n + GHL + CRM Bridge, then moved toward owned Client Acquisition System software under the agency brand.
AI influencer · Canada
Full software build and handover for an Instagram AI creator monetizing his audience. Product team, architecture, and complete technical handoff so he could sell to his community.
Insider vertical · underwriting
Custom software for real estate underwriting workflows. Patrick brought deep domain knowledge from weeks inside deal documentation and collections. We built the system around how underwriters actually work.
Productized service · ongoing delivery
Vertical SaaS-style engagement with production architecture, integrations, and ongoing build support for a defined niche product.
Built and shipped
Six live products with named founders, countries, and the stacks behind each build. Voice AI, multi-tenant SaaS, CRM automation, and full-stack platforms.
Full-stack logo contest and marketplace platform. Long-term partnership spanning frontend, backend, and ongoing feature delivery for a live Italian SaaS brand.
AI logo generation SaaS for professional designers. Repeat engagement building the full product experience from generation flows to production deployment.
Multi-channel AI sales agent platform with voice, text, and agentic CRM. Fixed-price SaaS build plus ongoing hourly delivery for AgentKong product work.
Multi-tenant booking and invoicing platform for home services. Next.js and Supabase architecture with AI automation hooks, tenant isolation, and Stripe billing.
Domain-led vertical software for real estate underwriting workflows. Custom intake, document handling, and CRM-connected ops built around how underwriters actually work.
Full-stack web application for AI image generation. Fixed-price delivery from scoped MVP through production-ready SaaS surfaces.
Ratings, quotes, and project scope from completed engagements. Unedited screenshots from the platforms where clients left feedback.
AI Sales Bot / Chat Bot | SaaS Web App
5.0 review on a $24,500 AI sales bot and SaaS web app build.
Hourly Rate - AgentKong
5.0 review on 131 hours of AgentKong product work.
Frontend / Full Stack Developer for Long Term Work
5.0 review after 1,754 hours of long-term full stack work.
Full Stack AI Developer for Long Term Work
5.0 review on 679 hours of full stack AI development.
Full Stack Development
5.0 repeat-client review on Hiding Elephant full stack work.
AI Automation Developer - Multi-Tenant Booking & Invoicing Platform (Next.js/Supabase)
5.0 review on a multi-tenant booking and invoicing SaaS build.
AI SaaS Platform for Real Estate
4.0 review on a real estate underwriting SaaS platform.
Web Application Development
5.0 review on a full-stack image generation web application.
What we deliver
Pick the depth you need today. Every layer is built so your clients see your brand, not ours.
GoHighLevel, n8n, webhooks, and CRM bridges into the software your clients already run. Fast per-client rollout.
Custom product your agency resells: auth, billing, tenant isolation, and UI under your positioning.
Onboarding, training, integration setup, and support for each of your clients. We fulfil. You stay strategic.
Why agencies partner with us
We never compete for your end clients. One partnership conversation. You fulfil for every account in your base.
A three-day sales demo on the proven stack before any large software investment. You pitch to clients you already have. Implementation starts only when someone pays.
UK dental becomes US dental with a new local partner and new integration targets. Same playbook, new market.
Delivery stack
Tech partner
Tech partner · FusionSync
Background on Upwork
Message me on WhatsApp. Bring your vertical, your client count, and the gap you cannot fill today. We will talk through fit and map a phased partnership before you commit.
PolarBuild case study →What founders ask before booking a build call: ownership, stack, tiers, and how we differ from generic agencies.
