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Case Study: How a Recruitment Firm Boosted Engagement With LinkedIn Ads

A recruitment firm operating across nine African countries sought to increase its community sign-ups through a targeted LinkedIn ads campaign. The campaign focused on precise job title targeting, geographic segmentation, and ad creative optimization. With a modest budget, our paid ads team helped them reach HR leaders and decision-makers. 

By analyzing the data and performance metrics during the learning phase, the firm gained actionable insights for future strategies. In this case study, it explores how campaign strategies and budgeting decisions shape engagement with LinkedIn Ads.

TABLE OF CONTENTS

Key Takeaways

• 47.3% of the LinkedIn advertising audience are in the age of 25 to 34. (DataReportal)
• The ad campaign delivered a 2.40% CTR and 18 clicks on a $42.64 budget, exceeding typical LinkedIn engagement benchmarks for HR campaigns.
• The campaign achieved cost-efficient results with an average CPC of $2.37.
• Key limitations of the campaign include small audience size, limited ad variations, short duration, and no conversion tracking.
• Future campaigns can improve results through broader targeting, more creatives, longer campaigns, and conversion tracking.

Campaign Strategy and Targeting

To maximize engagement on LinkedIn ads, our paid ads experts began by segmenting the audience precisely. In particular, the LinkedIn ads were recommended to target 140,000 users with the following job roles:

• HR Professionals
• Talent Acquisition Specialists
• Managing Directors
• Chief Executive Officers 

Targeting job titles and seniority levels ensured the ads reached decision‑makers with hiring responsibilities. In addition, our team identified the target audience aged 25-34 and 35-54 in these locations: 

• Egypt
• Nigeria
• Tanzania
• Ghana
• Rwanda
• Uganda
• Zambia
• Kenya
• South Africa.

The recruitment firm had a budget of $42.64, invested in sponsored content and messaging the platform recommends for professional engagement. Emphasis was placed on concise value messaging and clear CTAs, as well as branding, pipelines, and industry events. 

To extend the reach of the 7-day campaign, timing and creative rotation were managed to broaden exposure without exhausting the limited budget.

Source: SQ Magazine (via DataReportal)

Challenges and Constraints

The campaign outlines several limitations that impact the LinkedIn ads engagement campaign:

• Limited ad budget: The $42.64 budget limited how often ads were shown to the target audience.
• Less target audience: An estimated audience of 140,000 LinkedIn members quickly reached saturation, increasing the risk of ad fatigue.
• No conversion tracking: The lack of conversion tracking prevented the LinkedIn ads campaign from measuring completed recruiting actions.
• Limited ads set: Running only two ads reduced the ability to test different creatives, headlines, and calls to action.
• Limited campaign duration: Short campaigns have limited data collection and performance insights.

Performance Metrics and Key Insights

After the campaign, the following benchmarks were delivered:

Results and Analysis

Here are the outcomes of using LinkedIn ads campaign for recruiting HR professionals:

• The campaign successfully introduced the firm to more than 140,000 LinkedIn professionals across multiple African markets.
• A 2.40% click-through rate demonstrated healthy interest from the audience, while highlighting room for improvement through refined messaging, creative testing, and audience expansion.
• Creative effectiveness varied by ad execution.
• One ad delivered a noticeably higher engagement rate at 2.83 percent compared to 1.55 percent for the second ad, indicating that the stronger-performing creative aligned more closely with audience needs and expectations.
• Cost efficiency reflected competitive bidding conditions
• An average cost per click of $2.37 suggested efficient spend management within a competitive LinkedIn advertising environment, particularly for a niche professional audience.
• Limited run time constrained the depth of optimization.
• The short campaign duration limited the availability of performance data, hindering trend identification, optimization, and the full utilization of LinkedIn’s learning phase benefits.

Lessons Learned and Recommendations

Here are the recommended actions for ad campaigns of this type:

1. Expand Target Audience

A limited audience of 140,000 professionals constrained ad frequency and prevented the campaign machine from efficiently optimizing delivery. Future campaigns should broaden the criteria to at least 300,000 members to ensure consistent optimization and ad exposure.

2. Increase Ad Variants for Testing

The campaign lacked variety, with just two ads deployed. Including at least 3‑5 ad variations helps identify top‑performing creative and copy combinations quickly. It is also one of the proven ways to combat ad fatigue.

For additional resources, here are a few simple tips:

3. Implement Conversion Tracking

The absence of conversion tracking limited insights into bottom‑line results, such as form submissions or actual lead quality. Configuring conversion tracking is important for measuring click‑to‑lead behavior and aligning spending with measurable outcomes.

4. Prioritize Professional Messaging

Professional messaging should prioritize targeted relevance over generic ad language. A well-written caption and clear calls to action help encourage engagement with LinkedIn ads.

5. Extend Campaign Duration

The campaign ran for a week for a learning phase. Our ad experts recommend extending the campaign duration to gather valuable insights to measure ad performance trends and optimize ad spend.

6. Improve Landing Page Experience

Immerse the target audience in the marketing funnel by creating informative content about the sign-ups before redirecting them to the landing page.

Source: Sprout Social

Budgeting and ROI Expectations

Recruitment advertising on LinkedIn is highly competitive, as reflected in the average benchmarks in the graph. Human resource firms under the corporate services industry have an average cost-per-lead of $60. This industry also boasts an average of 0.62% in click-through rates. At the same time, the average CPC is $6, rising to $6.40 when targeting senior roles.

With a total ad spend of $42.64, the campaign should be able to generate 6 or 7 clicks based on the average CPC of $6 to $6.40. For this campaign, the ad gathered 18 clicks for the whole duration. When compared against the industry’s $60 average cost per lead, this ad spend is expected to gather at least 4 leads, assuming proper conversion tracking was placed.

The absence of recorded sign-ups, however, doesn’t mean the ads failed. Competitive industries like human resources often involve a longer decision-making process before taking action. Overall, these results reflect common recruitment advertising challenges on LinkedIn.

Source: The B2B House.

Conclusion

LinkedIn’s professional environment offers a valuable channel for HR professionals and decision‑makers. While budget limitations and audience size impacted performance, the learning data provided a clear roadmap for future ad campaigns. Implementing precise targeting, diverse creatives, and messaging helps the recruitment firm increase their sign-ups.

Turn these campaign insights into measurable growth with a partner that understands both paid media strategy and execution. Syntactics Inc. helps organizations plan, optimize, and scale LinkedIn ads engagement for sustained engagement and results. To learn more, check out our PPC management services today!

Frequently Asked Questions (FAQs)

Are LinkedIn campaigns worth it?

Yes, LinkedIn campaigns are worth it for B2B and recruitment marketing because they provide direct access to professional audiences. Although costs are higher, the lead quality and intent typically justify the investment.

What is a good CTR for LinkedIn ads?

A good CTR for LinkedIn ads typically ranges from 0.44% to 0.65%, depending on the industry. Well-optimized campaigns targeting niche audiences can exceed 1%.

What is a good engagement rate on LinkedIn ads?

A strong engagement rate on LinkedIn ads usually falls between 1 percent and 3 percent. Campaigns with highly relevant messaging and creative can perform above this range.