Interim marketing manager: how a part-time marketing director drives B2B growth

What is an interim marketing manager and when do you need one

An interim marketing manager is an experienced manager who joins a company for a specific period to carry out a particular project or stabilize marketing operations. Unlike a full-time director, they do not stay permanently: they complete the mission and hand over the reins to the team or agency. This solution is especially popular in the Kuyavian-Pomeranian region, where B2B companies from Bydgoszcz, Toruń, Grudziądz, or Inowrocław often need a growth boost but do not want to bear the fixed costs of employment.

When should you consider such collaboration? Primarily in crisis situations: when marketing is not generating leads, the team is demotivated, and the budget is spent without control. An interim manager then steps in from outside, quickly diagnoses problems, and implements solutions. It is also an option for companies planning expansion into new markets or launching a new product: they need someone to lead the process from strategy to implementation, and then hand it over to the internal team.

From our experience, the companies that approach us most often already have an established market position but have hit a plateau. They have a product, they have customers, but marketing is not generating predictable growth. An interim marketing manager is their way to gain a fresh perspective without building another department. Importantly, in the interim marketing manager model with performance-based pricing, the risk for the company is minimal: you pay for results, not for hours spent in the office.

Marketing director by the hour: how it works in practice

The "marketing director by the hour" model is based on flexible manager engagement, working with your company for a set number of hours per week or on a project basis. This is someone who actually manages the budget, team, and vendors: not a consultant advising from a safe distance. In our agency, companies that need support in specific areas use our marketing consulting services, but an interim manager goes a step further: they take responsibility for execution.

What does this look like in practice? At the start, we conduct a marketing and sales audit to understand where current results come from. Then we create a 90-180 day action plan with clearly defined goals and measurable KPIs. The interim manager meets with the team, sets priorities, and begins implementing changes. This could involve rebuilding the sales funnel, optimizing Google Ads campaigns, implementing a new CRM system, or reorganizing the marketing department.

Importantly, the interim manager does not work in a vacuum. They draw on knowledge of your industry, as well as tools and proven methodologies. As Stavros Georgiades shows in the book "Organization Management: Dynamic Creative Team Coordination" (2022), effective coordination of creative teams requires combining formal structures with informal practices. An interim manager often introduces exactly such temporary structures: project sub-teams that form for the duration of a task and then dissolve. This allows for flexibility and quick adaptation to changing market needs.

A marketing director by the hour is also a solution for companies that do not want to give up control. The interim manager reports directly to the board, and their work is transparent: you know what they are working on, what progress they are making, and what the costs are. This helps you avoid the typical problem with a full-time director, who is often a "black box": you know they exist, but you do not know what they actually do.

Interim management marketing in B2B: concrete benefits

Managing marketing in a B2B company differs from consumer marketing. There are fewer customers, but purchasing decisions are more complex and based on long-term relationships. Therefore, interim management marketing in B2B requires a different approach than in e-commerce. What matters is understanding the sales process, building trust, and delivering content that genuinely helps the customer make a decision.

One of the main benefits is speed of action. An interim manager does not need six months to get up to speed: they have experience from similar projects and know from day one what needs to be done. This is especially important when a company is losing market share or needs to react quickly to competitive changes. In the Kuyavian-Pomeranian region, where the market is relatively small, speed can be crucial: being first to reach the customer matters.

Another benefit is cost reduction. Hiring a full-time marketing director costs a significant monthly amount, plus benefits, training, and recruitment costs. An interim manager is paid based on results, so you only pay for outcomes that actually impact revenue. In our agency, we manage budgets with a total value of 160 million PLN, which gives us experience in managing budgets at various scales: from small budgets to large campaigns.

Moreover, an interim manager brings a fresh perspective to the company. A common issue in B2B companies is that the marketing team operates on outdated patterns that no longer work. An interim manager has no sentimental attachments: they see what is not delivering results and can change it. As Josh Steimle notes in "Chief Marketing Officers at Work" (2016), the CMO role is evolving from creative to data- and technology-driven. An interim manager is exactly such a modern manager, combining analytical thinking with practical action.

How to compensate an interim marketing manager based on results

Performance-based compensation is one of the main advantages of working with an interim marketing manager. Unlike agencies that charge a monthly retainer or full-time employees who receive a fixed salary, an interim manager can be compensated based on achieved goals. This requires, however, a precise definition of what constitutes a "result" at the contract negotiation stage.

The most common models are:

• Flat monthly fee: for presence and management, with a bonus for achieving goals.
• Project fee: for delivering a specific project, e.g., implementing a marketing strategy.
• Performance-based fee: e.g., a percentage of generated leads or revenue growth.

In practice, a hybrid model works best: a fixed base fee covering the manager's labor costs plus a bonus for exceeding targets. This motivates the interim manager to achieve results without taking excessive risks that could harm the company. It is also important that goals are measurable and data-driven, such as number of leads, customer acquisition cost, conversion rate, or sales value.

Keep in mind that not all effects are visible immediately. B2B marketing is a long-term process: brand building, positioning, and content marketing yield results after several months. Therefore, it is wise to include a transition period in the contract during which the interim manager can implement changes, and only then be held accountable for results. As research by Cauberghe, Hudders, and Eisend in “Advances in Advertising Research IX” (2018) shows, in B2B content marketing, behavioral engagement (clicks, shares, time spent on the page) is key, acting as a mediator between activity and business outcomes. These are the metrics to monitor at the start of the collaboration.

What to avoid when working with an interim marketing manager

Interim marketing management is an effective tool, but only when implemented well. One of the most common mistakes is a lack of clearly defined responsibilities. The interim manager should not be a “jack-of-all-trades” but must have specific goals and competencies. Otherwise, they will get lost in daily tasks and fail to deliver expected results. The interim manager arrives with a mandate to “fix marketing,” but after two weeks, the team starts asking for help designing Christmas cards and writing a job ad for an assistant. Three months later, there is still no strategy, but the company has very nice holiday cards.

A second mistake is expecting immediate results. B2B marketing is a marathon, not a sprint. If a company has struggled with lead generation for years, it cannot be fixed in two weeks. The interim manager needs time for diagnosis, implementation, and optimization. Therefore, the minimum engagement is typically 3-6 months, often up to a year.

A third mistake is a lack of support from the executive team. The interim manager is an outsider who must earn the team's trust and the authority to make decisions. If management is not involved and employees sabotage changes, the chances of success diminish. Therefore, before starting, it is important to prepare the team for the change and explain why the interim manager is joining. The interim manager arrives with a clear mandate from the owner, but no one in the company has informed the marketing team. Employees treat them as an intruder here to inspect them: they withhold data, show up late to meetings, and one says outright, “the previous consultant also had great plans and disappeared after a month.”

It is also wise to avoid situations where the interim manager becomes a “permanent consultant.” This model is meant to be temporary: after the project ends, the company should be able to operate independently or with reduced support. If that does not happen, it means the interim manager failed one of their key tasks: building internal capabilities. As Georgiades (2022) emphasizes, the team coordination process is cyclical: forming, modifying, dismantling, and the same applies to the interim manager's role. After the mission ends, they must enable a smooth handover of responsibilities.

If you are wondering whether an interim marketing manager is the right solution for your company, it is worth starting with a needs analysis. Review your resources, budget, and goals for the coming months. If you need support in developing a B2B marketing strategy, our specialists can help you determine whether the interim manager model is a good fit. At Growth Group, we have supported companies for over 16 years, with experience working with more than 60 clients. Our approach is grounded in tangible results, not empty promises.