Creative and marketing agencies win client trust with strategy, branding, and campaigns. Then the client says: “Can you also build the web app?” or “We need a customer portal for this campaign.” The agency has two choices: hire developers (expensive, risky, and outside their core competency) or partner with an engineering team that handles the technical build while the agency keeps the client relationship.
We are that engineering partner. This article explains the three partnership models, how pricing works, and what makes the relationship work long-term.
Why agencies need an engineering partner
Three reasons agencies struggle to deliver engineering in-house:
- Hiring developers is expensive and risky. A senior full-stack developer in Croatia costs €3,000–€5,000/month salary. If the agency does not have consistent engineering work, that seat burns cash. And if the developer leaves, the agency has a project with no one to finish it.
- Engineering management is a different skill. Managing designers and copywriters is not the same as managing code reviews, deployment pipelines, and technical debt. Agencies that try to manage engineering with creative directors end up with mismanaged projects.
- Client expectations exceed agency capabilities. The client expects the agency to deliver a full product — design, build, launch. Saying “we don’t do development” loses the client. Saying “yes” without the capability risks the agency’s reputation.
Three partnership models
1. White-label
We build under the agency’s brand. The client never sees our name. The agency manages the client relationship entirely; we attend calls as “the agency’s development team.”
Best for: Agencies that want full control of the client experience. The agency marks up our work and manages all communication.
How pricing works: We quote the agency at our standard rates. The agency adds their margin (typically 20–40%) and presents a single proposal to the client.
2. Co-branded
Both brands are visible. The agency leads strategy, design, and client management. We are introduced as the engineering partner. The client knows there are two teams working together.
Best for: Agencies that value transparency with clients or whose clients specifically want to know who is building the technology.
How pricing works: The agency and our team each scope and quote their parts separately. The agency presents a unified proposal or two linked proposals.
3. Embedded team
Our developers join the agency’s team on a project basis — working in the agency’s tools (Slack, Jira, Figma), attending their standups, and operating as if they were agency employees.
Best for: Agencies with larger, longer-running projects (3+ months) that need consistent engineering capacity without hiring.
How pricing works: Monthly retainer per developer (€4,000–€7,000/month depending on seniority and engagement level).
What we handle vs what the agency handles
| Responsibility | Agency | Us |
|---|---|---|
| Client relationship | Yes | No (white-label) or shared (co-branded) |
| Strategy and positioning | Yes | No |
| UX/UI design | Yes (or we can) | Optional |
| Frontend development | No | Yes |
| Backend development | No | Yes |
| API integrations | No | Yes |
| QA and testing | No | Yes |
| Deployment and hosting | No | Yes |
| Ongoing maintenance | Optional | Yes |
What makes a good agency partner
From our experience, the partnerships that work best share these traits:
- Clear briefs. The agency translates client needs into a clear product brief before we start. Ambiguous briefs create scope creep, which creates budget disputes.
- The agency owns the client relationship. We do not compete for the client. The agency is the client’s point of contact. We communicate through the agency (in white-label) or alongside them (in co-branded).
- Reliable payment terms. We invoice the agency, not the client. The agency pays on time, regardless of when the client pays them. This is non-negotiable.
- Respect for technical process. The agency trusts us to make technical decisions (stack, architecture, deployment) just as we trust them to make creative decisions.
How to start
Step 1: Pilot project. Start with one project to test the working relationship. Keep scope manageable (€5,000–€15,000) so both sides can evaluate without major risk.
Step 2: Establish process. After the pilot, define communication channels, brief templates, escalation paths, and billing cycles.
Step 3: Scale. Once the process is proven, bring us into more projects. Some of our agency partners send us 2–3 projects per month on an ongoing basis.
Frequently asked questions
Can you also handle design? Yes. If the agency needs us to handle design as well as development, we can. But most agency partners prefer to keep design in-house — it is their core strength.
What happens if the client wants to work with you directly? We do not go around the agency. If a client approaches us directly for follow-up work on an agency project, we refer them back to the agency. Trust is the foundation of this partnership.
What is the minimum project size? For white-label and co-branded: €5,000 minimum. For embedded team: 3-month minimum commitment at €4,000+/month.
Related articles
- How to choose a development agency — What your clients look for in a development partner.
- How much does custom software cost in Croatia? — Pricing context for scoping proposals.
- Discovery sprint: how it removes project risk — How we start complex projects.
Looking for an engineering partner?
Book a free 30-minute call. We will discuss your agency’s needs, typical project types, and which partnership model fits best. No commitment — just a conversation.
Reach out at [email protected] or via the form on our homepage.