Revenue platform for a multinational brand
Built for the local operations of a global company: deals, teams, and approvals in one system of record.
GTM Engineering on HubSpot
We build the revenue system your growth needs.
You own it from day one.
You have customers and bigger plans, and Selleris is a GTM engineering agency that builds the revenue system to match. For B2B SaaS and tech-enabled SMBs with mid-market ambitions, we connect data, AI agents, automation and reporting in HubSpot across demand generation, prospecting, sales, onboarding, retention and expansion.
That system is Selleris Revenue Loop, our Build & Improve program. We design and implement the capabilities your growth needs, then improve them as your priorities evolve. Your team runs it.
The diagnostic shows what each month of waiting costs you. Fixed price agreed before we start. No upfront Selleris delivery fee. No result, no invoice. You keep what we build in the diagnostic, whatever you decide.
HubSpot Solutions Partner (opens in a new tab) and Microsoft partner (opens in a new tab). 100% of licenses in your name, not ours.
42
people in our engineering team
Since 2017
CRM engineering experience
100%
of licenses in your name, not ours
Who this is for
You have a growth target.
Your revenue system needs to keep up.
You have customers and bigger plans. But missed opportunities, stalled deals and gaps in onboarding or account growth keep getting in the way. Whether you lead sales yourself or have an established team, those gaps cost time and money.
Selleris Revenue Loop helps you tackle the right problem first. We design, build and improve your revenue system in HubSpot, so you do not have to piece it together yourself. You own it. Your team runs it.
The Architecture
Ownership isn't a feature. It's the architecture.
Whether you already run HubSpot or create a free account in your name, the work happens in your account: everything Selleris builds there during the Free Revenue Diagnostic and the proof of concept is yours before any payment, and stays yours if you decide not to continue.
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Your data.
Your revenue data stays in systems you control, with HubSpot at the center. We connect the platforms needed for the agreed scope. Your access does not depend on ongoing Selleris services.
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Your playbooks.
Documented in your workspace. Every sequence, score, and decision rule, written where your team can read it, not locked in our heads.
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Your agents.
Native agents run in your HubSpot account. Where custom capabilities are needed, we deploy them in your Azure tenant. Agents prepare work first; autonomous actions require explicit permission, with exceptions handed to your team.
What we engineer.
Selleris Revenue Loop builds the whole revenue system on HubSpot, in accounts you own, and is paid per verified result. The diagnostic defines your initial scope; further work is agreed separately.
Before you pay anything, we do a real piece of the work: research, context or a working demonstration. You keep it.
Proof
What clients say about our CRM engineering work.
"They are nice people, and they know what they are doing, with structured approaches, great communication, and technical expertise."
Jens Stoklund Strategic Business Developer at Conversio "Selleris people are creative and have a solution even for difficult cases."
Dr. Dmitry Koplovich CEO at Meteoblue 5+ years
Average client relationship
Excellent
rating on Trustpilot
"They understand the platform, meet deadlines, and focus on results."
Raphael Schönen Operations Manager at Linxys "Our platform today is even better, more widely implemented, and generally more valued by the organization."
Søren Collstrup COO at Arnsbo Group Project experience
CRM engineering in practice. Direct and partner delivery.
FAQs
Frequently asked questions.
GTM engineering, Build & Improve, costs and ownership. What to know before we start.
What is GTM engineering?
Go-to-market (GTM) engineering connects business processes, data, AI agents, automation and reporting into a working revenue system. At Selleris, that system is built around HubSpot and supports demand generation, prospecting, sales, onboarding, retention and expansion.
You control the accounts, data and delivered assets. Read the GTM engineering manifesto.
GTM engineering vs RevOps: what's the difference?
RevOps focuses on how revenue teams work together across processes, data and reporting. GTM engineering is the design and technical implementation of the system supporting that work.
At Selleris, they meet in Build & Improve. Build designs and launches the agreed capabilities. Improve supports, calibrates and extends them through separately agreed work. Your team runs day-to-day revenue operations.
What is a GTM engineer, and should we hire one?
A GTM engineer implements and maintains the technical systems behind customer acquisition, sales and account development. You do not need to hire one before working with Selleris.
If the role does not exist yet, we build the revenue system first, in your accounts and with the decisions documented in your workspace, so you can decide whether and when to hire from a working system rather than a job description. If you already have a GTM engineer or RevOps lead, they join the diagnostic and operate what we deliver. Compare build vs hire.
What is answer engine optimization (AEO) for B2B software companies?
Answer engine optimization (AEO), also called generative engine optimization (GEO), aims to make your company’s expertise easier to discover and reference in AI-generated answers. Selleris’s AEO work includes buyer-question research, definitions, comparisons and supporting evidence. We distinguish research and content delivered from observed AI visibility, leads and revenue.
AEO can be part of Selleris Revenue Loop or a separately scoped service. See the AEO agency page.
What is an AI SDR, and is Selleris one?
AI SDR tools support prospecting through account research, personalized messages and follow-up. Selleris is a GTM engineering agency, not an AI SDR subscription.
In Selleris Revenue Loop, prospecting agents work as part of the wider customer lifecycle. Agents prepare work first; autonomous execution is enabled only for agreed scenarios and permitted actions. Your team handles human conversations and exceptions. See the AI agents page.
How much does Selleris Revenue Loop cost?
Selleris agrees one fixed total price for your initial Build after the Free Revenue Diagnostic. You see the proposed results and their forecast financial value alongside the price, before committing.
For budget guidance, a focused quick-win project can start around $2,000 to $3,000; a more comprehensive implementation can reach $50,000 or more. These are budget guides in USD, not fixed packages or a price cap.
Build and Improve follow the same payment principles: no upfront Selleris delivery fee, with payment after agreed results are achieved and verified. Improve is commissioned separately, with no automatic retainer. Software, credits and cloud costs are disclosed separately and paid directly to providers, with zero Selleris markup.
Why HubSpot?
HubSpot is the operational center of the revenue systems we build, connecting customer records, workflows, agents and reporting. It does not have to replace your existing product, billing, support or CRM platforms.
You do not need an existing HubSpot account to start. We help you create a free account in your name. Required subscriptions and integrations are selected for the agreed scope. HubSpot implementation, migration and AI.
What tools and systems do you integrate with?
We integrate the systems and data sources needed for your agreed revenue workflows. These can include your existing CRM, product or customer portal, billing, accounting, support, enrichment and outreach tools.
For each integration, we define the relevant data, direction, update frequency and dependencies. When product events are needed, Selleris implements the receiving integration; your product team or existing contractor makes any required product-side changes.
How to buy this.
Already on HubSpot? We work in your account through official partner access, under NDA.
Not on HubSpot yet? You create a free account in your name and we set it up. Either way, the system is yours from day one.
The Diagnostic
Bring your growth target.
Leave with a plan and one fixed price.
Ten calendar days after your data and access are ready: the plan, its forecast value and one fixed price. The diagnostic shows what each month of waiting costs you.
From you: two conversations, your data under NDA, and the people who will run the system. Everything else is on us.
No Selleris fee, no obligation.