Build vs Buy: Should You Create Your Own Hiring Platform?
When is it smarter to build your own hiring system instead of renting SaaS tools? An honest comparison for HR leaders and CTOs.
Door Ingmar van Maurik · Founder & CEO, Making Moves
The big question for every growing organization
Every organization that's serious about growth eventually faces the same question: do we keep paying for separate SaaS tools, or build our own hiring system? It's a decision that affects not just your recruitment department, but also your IT budget, your data strategy, and ultimately your competitive position in the talent market.
The answer isn't black and white. But for more and more companies, it's becoming clear: building your own wins in the long run. In this article, we provide a thorough comparison, including concrete numbers, real-world examples, and a clear decision framework.
The current state of hiring technology
The market for recruitment technology has grown enormously. There are hundreds of tools available, from simple applicant tracking systems to complex AI-driven platforms. Yet most HR teams struggle with the same problems: too many disconnected tools, too little integration, and no ownership of data.
Research shows that an average mid-sized company uses between 4 and 7 different tools for the recruitment process. Each tool has its own login, its own data storage, and its own pricing model. The result is a fragmented landscape that is inefficient and where valuable data gets lost between systems.
What you rent with SaaS
Most companies use a combination of:
That sounds logical. But add up the costs: €500 to €3,000 per month, per tool. That's €12,000 to €36,000 per year, without owning anything. And those are just the direct costs. As we explain in our article on the true cost of ATS software, the hidden costs are often much higher.
The hidden costs of SaaS
Beyond license fees, you also pay for:
A realistic total picture over 3 years for a company with 100+ hires per year: €80,000 to €150,000, with zero ownership of technology or data.
What you build with a custom system
Your own hiring system means:
What a custom system looks like in practice
Imagine this: a candidate applies on your website. Within seconds, an automated AI hiring funnel administers assessments, analyzes responses, and calculates a weighted score. Your hiring manager opens a dashboard and immediately sees the top 5 candidates, including detailed profiles and recommendations.
No manual CV screening. No endless email threads. No data scattered across five different tools. Everything in one system that you own, and that gets smarter with every candidate.
Visit our AI hiring system page for a concrete example of what such a system looks like.
The financial comparison: 3-year TCO
Let's put the numbers side by side for a company making 100 hires per year.
Scenario 1: SaaS stack
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And that doesn't include the hidden costs: training time, vendor management, data migration risks, and annual price increases.
Scenario 2: Custom system
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The break-even point is around month 20. From that point on, the custom system is cheaper. And the most important difference: after 3 years, you own a system that has grown in value, instead of €79,200 in licenses that have evaporated.
When building is the right choice
Building is the better choice if you:
Real-world example: mid-sized tech company
A tech company with 200 employees and 80 hires per year was using five different SaaS tools for recruitment. The annual cost: €32,000. After switching to a custom system, ongoing costs dropped to €6,000 per year. But the real advantage was in quality: through proprietary norm groups and continuous validation, the quality of hires improved measurably, as reflected in performance reviews after 6 months.
When SaaS is still the right choice
SaaS remains logical if you:
It's important to be honest: for small companies in an early stage, SaaS can be the pragmatic choice. But plan a moment to revisit the build-vs-buy question as soon as you start growing.
The hybrid approach: build step by step
You don't have to build everything at once. The smartest organizations choose a hybrid approach:
Phase 1: Assessment-first
Start by building your own assessment module for your most in-demand role. Use existing tools for the rest.
Phase 2: Integration
Connect your custom assessment to an existing ATS. Build a central dashboard for all data.
Phase 3: Full migration
Replace SaaS tools one by one with custom modules. Start with the most expensive or most limiting tool.
Phase 4: Optimization
With all data under your own control, you can implement continuous validation and let your system learn from every hire.
The real comparison: more than just money
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Frequently asked questions
How long does it take to build a custom system?
A basic system can be operational in 8-12 weeks. Full functionality including AI scoring and dashboards takes 3-6 months.
Do I need a large development team?
No. With the right partner and a modern tech stack, you can build and maintain a powerful system with 1-2 developers.
What if my needs change?
That's precisely the advantage of a custom system: you can adapt it without limits. With SaaS, you're dependent on the vendor roadmap.
What about compliance and GDPR?
With a custom system, you have full control over data processing, retention periods, and access rights. That makes compliance simpler, not harder.
Key takeaways
The most important insights from this article:
The question isn't whether to build, but when. The longer you wait, the more you pay for tools you don't own, with data you don't control.
Want to learn what a custom hiring system could mean for your organization? Get in touch for a no-obligation conversation about the possibilities.