Custom builds. Scoped, engineered, native to your stack.
When off-the-shelf isn't enough, we engineer what you need, connected to your CRM,
your data and your business logic. Fixed scope. Fixed price. Fixed timeline.
A 7-step guided estimator that replaces 3-hour scoping calls with 5-minute self-service quotes, for an SAP HR licensing reseller targeting EMEA mid-market.
Every Custom Build follows the same four-phase delivery. Fixed scope agreed before week 1. No surprises after week 4.
01
Scope
Week 0 · 1–2 days
We map your stack, business logic and integration points. You get a written scope: features, timeline, price. Fixed.
02
Architect
Week 1
We design the build, data flows, edge cases, integrations. You review and approve before code is written.
03
Build
Weeks 2–N
We engineer the build with your stack. Weekly demos. You ship feedback as it gets built, not at the end.
04
Live
Week N+1
We deploy, integrate to your CRM, train your team and document. Then you own it.
FAQs
What buyers ask before scoping a build
Do you build on top of our existing CRM, or do we have to move?
GrowthOS Build Studio operates on top of your existing CRM, no migration required. Whether you run Salesforce, HubSpot, Microsoft Dynamics 365, Pipedrive, Zoho CRM, Close, Copper, or a custom-built CRM, we design the sales infrastructure around what you already have in place. Your data, your workflows, your users, your permission structure and your integrations stay where they are.Instead of forcing a platform change, we build the operating layer that connects your CRM to the rest of your revenue tech stack, outbound tools, enrichment sources, data warehouses, BI, AI workflows and makes them behave as one system. We only touch the CRM configuration itself when a specific limitation is actively blocking the build, and only after you sign off on the change. If you are already mid-migration or considering one, we can help you think through the sequencing separately, but no engagement we run makes the migration a precondition.
What does a build cost, and how long does it take?
Build Studio pricing depends on whether the project is a productized build or a custom scoped one. Productized builds have a set price published upfront, you see what you pay before any conversation. Custom builds, or productized ones with meaningful configuration, are scoped to the specifics of your case: your CRM, your data model, your integration surface, your users, your industry.
Timelines run from 2 to 8 weeks from kickoff to live, depending on complexity, integration count and how quickly your team can review at each milestone. Most builds land in the middle of that range. On the scope call, before any commitment, you receive three things in writing: a fixed price, a fixed delivery window, and a statement of work listing exactly what is in scope, what is out of scope, and what the deliverables include. No hourly billing, no scope creep, no invoice surprises.
What happens after the build is live? Do we depend on you??
Once your build goes live, you do not depend on GrowthOS to keep it running. Every system we ship is documented, handed over and fully owned by your team from day one. That means the CRM configurations, automation logic, integration flows, data schemas, playbooks and any custom code live in your accounts, under your users, on your infrastructure. Nothing sits behind a GrowthOS login.
The handover includes technical documentation, a written runbook for the person who will own the system internally, usually your RevOps, sales operations or marketing operations lead and a live training session. Optional retainer support is available if you want us on hand for ongoing tuning, new integrations, or evolving the system as your commercial motion changes. Clients who take the retainer do so because they see ongoing value in having the original builders close by, not because the system stops working without us.
How does scope work once we start?
Scope is defined upfront in a written statement of work (SOW) signed by both sides before any build work begins. The SOW lists exactly what is being built, what is not, what the deliverables are, and what the delivery timeline looks like. Both parties work from the same document, and neither side can add invisible work to it.
This is the opposite of how traditional consulting engagements handle scope, where hours accumulate quietly and the invoice arrives with surprises attached. If you want to add, change or remove something mid-project, we handle it through a simple change order: a new quote, a new delivery window, your explicit written sign-off before we touch it. Nothing gets added quietly, nothing balloons without your approval, and the scope you agreed to is the scope we deliver on the timeline we committed to.
What if we need something not in the six builds listed?
The six productized builds cover the systems most B2B teams need first, which is why they are packaged with published scope and pricing. But they are the pattern, not the ceiling. If your project doesn't fit cleanly into one of the six, that is not a blocker, we regularly build systems outside the standard catalog: custom integrations, bespoke sales workflows, specific data models, industry-specific configurations, or sales enablement layers designed for a particular product motion.
The scope call is where we decide together whether it is something we can build well within a reasonable scope. If yes, you leave with a quote and a timeline. If it is genuinely outside our capability or a poor fit, we say so plainly on that call and where relevant, we point you to a specialist who is better placed to help. Wasting your quarter on a bad-fit engagement is worse for both sides than passing on the deal.
Do you work with teams outside Europe?
GrowthOS operates as a fully remote team with local presence across Europe: Spain, Portugal, the DACH region and delivers to clients across the continent and beyond. Our current client base includes teams in Iberia, Central Europe, the UK and North America. We work primarily in English, with native Spanish and Portuguese capability inside the team for kickoff, workshops and client-facing conversations that are stronger in-language.
Time zone alignment matters for build cadence, so if your team sits outside CET ±3, we structure kickoff sessions, weekly reviews and milestone check-ins around your working hours from the start — not around ours. Tell us where your team is based and how you prefer to work; we build the delivery model around your context, not the other way around.
Mid-journey
A Custom Build is one piece of the system.
Most clients combine builds with strategy (Sales Engine) and self-serve tools (Growth Tools) into one operated revenue engine. See where this fits in the full stack.
Not sure where you fit? Take the 5-minute Sales Engine Diagnostic, we'll tell you which layer makes sense to start with.
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