Selleris Arvostelua 

Selleris is a go-to-market (GTM) engineering agency that builds and improves client-owned revenue systems on HubSpot for B2B SaaS and tech-enabled SMBs with mid-market ambitions. We build the revenue system your growth needs, and you own it from day one.

Our program, Selleris Revenue Loop, connects the full customer lifecycle (demand generation, prospecting, sales, onboarding, retention and expansion) through shared business context, enriched and scored data, AI agents, automation and reporting. HubSpot is the operational center; your existing product, billing and support platforms can stay in place. Customer context is carried across handoffs using SPICED by Winning by Design.

Demand & prospecting: engage the right accounts. Answer engine optimization (AEO) research and content, visitor identification and relevant signals connect to account research, prioritization and outreach. Replies and customer context reach the people responsible for the next conversation.

Sales & onboarding: connect the sale to first value. Discovery preparation, deal context and follow-up support the buying decision. Agreed customer goals and commitments carry into onboarding, with clear owners, milestones and visibility into delays.

Retention & expansion: keep customer value in view. Connect adoption, service history and value evidence to account reviews. Surface retention risks and relevant new needs, prepare renewal and expansion actions, and route decisions to your team.

Agents assist. You control the actions. Agents begin with research, summaries and drafts. Autonomous execution is enabled only for explicitly agreed scenarios and permitted actions. Exceptions and decisions outside those permissions go to a responsible person.

Every engagement starts with the Free Revenue Diagnostic. Within 10 calendar days of readiness of the agreed minimum data and access, we review your lifecycle, investigate the priority constraint, run a focused proof of concept and deliver a decision brief: proposed results, their forecast financial value and one fixed total price, side by side. Work then runs as Build & Improve: an initial Build of the agreed capabilities, followed by separately scoped Improve work. Before each result we agree the completion criteria, the verification method and the fixed payment it triggers. There is no upfront Selleris delivery fee and no automatic retainer. Software, credits and cloud costs are paid directly to providers with zero markup. We do not invoice an undelivered result.

Selleris builds and improves the system; your team runs day-to-day revenue operations and keeps control of the accounts, data and delivered assets, with 100% of licenses in your name.

Behind it: CRM engineering since 2017, 400+ CRM projects delivered directly and through implementation partners, a 5+ years average client relationship, and HubSpot Solutions Partner and Microsoft partner status.

Selleris was founded in 2017 and is headquartered in New York, with an engineering office in Warsaw. Contact: hello@selleris.com.

Get your free diagnostic. Bring your growth target. Leave with a plan and one fixed price.

We stand behind the result we agree. Before work starts, we agree the result, completion criteria, verification method and the fixed payment it triggers. The scope also makes the required client and third-party inputs clear.

We do not invoice an undelivered result. Where the relevant conditions remain unchanged, we complete the agreed correction cycle without an additional Selleris delivery fee. If the result is still not achieved, we close that result without its fee unless both parties agree in writing to a limited result and a reduced fee.

If scope or required inputs change, we agree how to proceed. Independently achieved results retain their payment status.

The proposal shows the expected measurable effect and its forecast financial value, with the assumptions behind it; the forecast is an estimate, not a guarantee.