Build vs Buy · 9 min read

When Does It Make Sense to Build Your Own Hiring Software?

Not every company should build custom hiring software. Discover the concrete criteria, costs, and scenarios where building beats buying.

Door Ingmar van Maurik · Founder & CEO, Making Moves


The question more companies are asking

The recruitment technology market is saturated. Hundreds of SaaS tools are available, each promising faster hiring, better candidates, and lower costs. Yet more and more organizations find that those promises do not always hold up. The standard solution does not fit everyone.

But building your own software is a serious investment. It is not a decision you make lightly. In this article, we discuss the concrete criteria that determine whether building custom hiring software is the right choice for your organization. With real numbers, practical scenarios, and a clear decision framework.

The five signals you are ready for custom software

1. You are paying for features you do not use

Most SaaS recruitment tools work with packages. You pay a monthly fee per user, per module, or per vacancy. The problem is that you often do not use 60-70% of the features but still pay for them. An average company with 200 employees spends between EUR 25,000 and EUR 80,000 annually on recruitment SaaS licenses.

If you do not need most of those features, you are essentially paying a premium for complexity you do not use. Custom software is built exactly to your needs, without the ballast.

2. You have unique hiring processes

Some organizations have hiring processes that fundamentally differ from the standard. Consider:

  • Technical assessments that need deep integration with your development environment
  • Culture fit evaluations specific to your organization
  • Compliance requirements in regulated sectors like financial services or healthcare
  • Multi-stage processes with specific approval flows per department
  • When you need to customize or build workarounds for more than 30% of your hiring flow in a standard tool, that is a clear signal that a custom solution is more efficient.

    3. Your hiring volume justifies the investment

    There is a tipping point where custom software becomes financially more attractive than SaaS. That point typically lies at 100+ hires per year or when your recruitment costs exceed EUR 50,000 per year.

    ScenarioSaaS cost per yearCustom build (amortized)Difference

    |----------|-------------------|------------------------|------------|

    50 hires/yearEUR 18,000 - 30,000EUR 35,000 - 45,000SaaS cheaper 100 hires/yearEUR 40,000 - 65,000EUR 35,000 - 50,000Break-even 200+ hires/yearEUR 80,000 - 150,000EUR 40,000 - 60,000Custom wins 500+ hires/yearEUR 180,000 - 350,000EUR 50,000 - 80,000Custom wins big

    These figures are based on average market prices and development costs, amortized over 5 years. Actual costs depend on complexity and technical capability.

    4. Data is a strategic asset for your organization

    If your organization wants to make data-driven decisions about talent, ownership of hiring data is crucial. With SaaS tools, your data sits with the vendor. You can export in limited ways, you have no control over the data model, and you depend on whatever analytics the vendor provides.

    With custom software, you can combine hiring data with other business data, build predictive models, and generate insights your competitors do not have. This is especially relevant for organizations that want to deploy AI in their hiring process.

    5. You want a competitive advantage in the war for talent

    In competitive labor markets, the candidate experience can make the difference. With custom software, you can deliver a unique, seamless experience that perfectly aligns with your employer brand. No generic application forms, but an interactive process that shows candidates who you are as an employer.

    The decision framework: a practical checklist

    Use this framework to determine whether building is the right choice for your organization:

    Score each factor from 1 (not applicable) to 5 (very applicable):

    FactorScore 1-5

    |--------|-----------|

    Hiring volume above 100 per year Unique processes that do not fit in SaaS Data ownership is strategically important Technical team available for maintenance Candidate experience is a differentiator Current SaaS costs above EUR 50,000/year Integration with internal systems is crucial Long-term vision on recruitment technology

    Score 30-40: Building is almost certainly the right choice. You have the volume, technical capability, and strategic need.

    Score 20-29: Building is probably smart, but start with an MVP approach. Build the core functionality first and expand gradually.

    Score 10-19: Consider a hybrid approach: a SaaS tool as a base with custom integrations for your unique needs.

    Score under 10: SaaS is probably the better choice for now. Reconsider when your organization grows.

    Realistically estimating costs

    One of the biggest mistakes in the build-vs-buy decision is underestimating the total cost of building. It is not just about initial development.

    Initial development costs

    Building a functional hiring platform typically costs:

  • Basic ATS functionality: EUR 40,000 - 80,000
  • Assessment module: EUR 25,000 - 50,000
  • AI screening and matching: EUR 30,000 - 60,000
  • Candidate portal and employer branding: EUR 15,000 - 30,000
  • Reporting and analytics: EUR 10,000 - 25,000
  • Total for a complete platform: EUR 120,000 - 245,000

    Ongoing costs

    Additionally, budget for annual costs:

  • Hosting and infrastructure: EUR 3,000 - 10,000
  • Maintenance and updates: EUR 20,000 - 40,000 (or 15-20% of build costs)
  • Security and compliance: EUR 5,000 - 15,000
  • Total cost over 5 years

    SaaS (200 hires/year)Custom build

    |--|----------------------|-------------|

    Year 1EUR 80,000EUR 180,000 Year 2EUR 88,000 (+10%)EUR 30,000 Year 3EUR 97,000 (+10%)EUR 32,000 Year 4EUR 107,000 (+10%)EUR 34,000 Year 5EUR 117,000 (+10%)EUR 36,000 TotalEUR 489,000EUR 312,000

    The tipping point typically falls in year 2 to 3. After that, custom software becomes increasingly more cost-effective, while SaaS costs rise annually.

    Technical requirements

    Building custom hiring software requires specific technical capability. You need:

    Minimum team:

  • 1 full-stack developer (dedicated or shared)
  • Access to UX/UI design expertise
  • A product owner who understands the hiring processes
  • Ideal team:

  • 2 developers (frontend + backend)
  • 1 UX designer
  • 1 product owner
  • Access to data science expertise for [AI functionality](/artikelen/ai-hiring-funnel)
  • If you do not have this capability in-house, you can also work with a specialized partner. At Making Moves, we help organizations build their own hiring system, so they do not need to set up a full development team themselves.

    When you should wait

    Honesty is important. There are situations where building is not the right choice right now:

  • You do fewer than 50 hires per year and have no plans to grow significantly
  • You have no technical team and no budget to set one up or engage a partner
  • Your hiring processes are not yet crystallized — do not build before you know what you need
  • Your organization is in an early stage and needs to focus all resources on your core product
  • In these cases, a well-chosen SaaS solution is the pragmatic choice. You can always switch to custom software later when circumstances change.

    The implementation approach

    If you decide to build, do it in phases:

    Phase 1 (month 1-3): Core functionality — vacancy management, candidate pipeline, basic communication

    Phase 2 (month 3-5): Assessments and screening — integrated custom assessments, scoring models

    Phase 3 (month 5-7): AI and analytics — predictive screening, reporting, dashboards

    Phase 4 (month 7-9): Optimization — A/B testing, candidate experience, integrations with external systems

    This phased approach limits risk and ensures you realize value quickly while building out the platform.

    Key takeaways

  • Building custom hiring software makes sense when you do more than 100 hires per year, have unique processes, and consider data ownership strategically important
  • The tipping point typically lies at EUR 50,000+ in annual SaaS costs or 100+ hires per year
  • Total cost over 5 years is 30-40% lower than SaaS at sufficient volume
  • Start in phases with an MVP and expand gradually
  • Wait to build if your volume is low, you lack a technical team, or your processes are not yet stable
  • Data ownership and AI capabilities are becoming increasingly important and argue for custom software
  • Get in [touch](/contact) for a no-obligation conversation about the possibilities for your organization

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