If you’ve been in a demo with an enterprise HR vendor recently, you’ve heard the monolith pitch. “Everything in one place.” “Unified data.” “Single source of truth for people operations.” It sounds like a feature. For startups, it’s a trap.
This post explains why the all-in-one HR suite model is structurally bad for growing companies, and what a lean, API-first alternative looks like.
What “all-in-one” really means
When enterprise HR vendors pitch an all-in-one platform, they usually mean a bundle that includes ATS, CRM, onboarding, performance reviews, payroll, benefits, time tracking, and learning management. One vendor, one contract, one database.
For a 5,000-person enterprise with a dedicated HR operations team, this can make sense. For a 20-person startup, it’s overkill by about 80%.
Three problems with the monolith for startups
1. You pay for features you don’t use
A typical enterprise HR suite charges for the full bundle regardless of what you actually use. A 25-person startup that needs an ATS and basic onboarding ends up paying for performance reviews, compensation planning, and learning management they don’t want, because those modules are part of the base license.
The math gets worse as you upgrade. Greenhouse’s Essential tier includes the ATS but not the candidate CRM. To get CRM, you move to Advanced or Expert, which run $12K to $50K+ per year, an increase justified almost entirely by features most startups don’t need yet.
A 25-person startup spends $0 to $1,200/year on CurriculoATS for hiring plus whatever they pay for Gusto or Rippling for payroll. Total HR tech spend is a fraction of an enterprise suite, with every dollar going to functionality the team actually uses.
2. Feature gating creates permanent upgrade pressure
Monolithic HR suites use feature gating strategically. The feature you actually need is always in the next tier up. Custom reporting lives on Enterprise. API access lives on Enterprise. Advanced analytics lives on Enterprise. SSO lives on Enterprise.
The base tier is designed to be almost sufficient so you upgrade. Every 6 to 12 months, there’s a new “must-have” feature gated behind a higher plan. Lever locks custom reporting behind Enterprise. Greenhouse locks the CRM behind Advanced/Expert. Workable locks AI sourcing behind Premier.
This isn’t accidental. It’s pricing strategy. The result for customers is a ratchet: you upgrade once because you needed the feature, and then you’re stuck on the higher tier forever.
CurriculoATS deliberately avoids this. Every feature is on the free plan with a 1-job limit. Pro ($100/month, early bird $50) just adds unlimited active jobs and priority support. Enterprise adds Full API access, SSO/SAML, custom integrations, and an SLA. There’s no “upgrade to unlock analytics” or “upgrade to unlock Slack integration” because those are included on every plan.
3. Vendor lock-in gets expensive fast
The bigger your monolithic HR suite gets, the harder it is to leave. Multi-year contracts, data export restrictions, proprietary workflow configurations, custom integrations, bespoke reporting dashboards. Industry estimates put HR tech migration costs at $2,000 to $20,000+ depending on data volume and integration complexity.
Lock-in gets worse when the vendor has been acquired by a private equity rollup. Lever is owned by Employ Inc., which also owns JazzHR and Jobvite. PE ownership in HR tech follows a consistent pattern: engineering teams shrink, product roadmaps slow, support contracts to save costs. Customer satisfaction degrades over time.
The modular HR stack for a 20-100 person startup
Here’s what a lean, modular HR stack looks like:
- ATS: CurriculoATS (applicant tracking, AI scoring, hiring pipelines, interview scheduling)
- Payroll and benefits: Gusto or Rippling (payroll runs, benefits admin, basic HRIS)
- Onboarding: Built-in to your payroll tool, or a lightweight standalone
- Performance: Nothing under 30 employees. Lattice or 15Five at 30 to 100.
- Learning: External courses (Udemy, Coursera) rather than a dedicated LMS
- Time tracking: Only if relevant. Toggl, Harvest, or nothing.
Each of these tools does one thing well. Each has an API. Each can be swapped for a better alternative when the team outgrows it. The stack evolves with the company rather than forcing the company to fit the stack.
Why CurriculoATS is built modular
CurriculoATS is deliberately not an HR suite. We do one thing: applicant tracking with outcome-based AI scoring.
- Lean feature set. AI scoring with written reasoning. Hiring pipelines. Gmail-style inbox. Interview scheduling. Slack integration. Google Workspace SSO. Recruitment analytics. Branded careers portal. Email-based apply. No performance reviews, no payroll, no benefits admin.
- Every feature on every plan. Free includes the complete feature set with a 1-job limit. Pro and Enterprise add unlimited jobs, priority support, and (on Enterprise) Full API access plus SSO/SAML.
- API-first on Enterprise. Plug Curriculo into your existing stack rather than replacing it.
- One-click migration from Greenhouse, Ashby, Workable, or Lever.
- No contracts, no cancellation fees. Switch away from Curriculo whenever you want.
When the monolith actually makes sense
In fairness, all-in-one HR suites do make sense for some companies:
- Enterprises with 1,000+ employees and dedicated HR operations
- Companies with complex compliance requirements that benefit from unified reporting
- Organizations that value a single vendor relationship over modular flexibility
- Teams with the budget to pay for features they don’t fully use
For startups in the 5 to 200 employee range, none of these apply. You’re better off with a modular stack of best-in-class tools that you can swap independently as you grow.
Start modular: features, integrations, pricing.