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HR Software Development Services

HR software development services USA: custom HRIS, ATS, and payroll — not a Workday or BambooHR seat. Built for CHRO, People Ops, and HR-tech teams that need a system of record they own.

8+Years shipping custom software
HRIS / ATSWorkforce products we build
3–4 moAvg. MVP timeline
SOC 2 / SSOControls we design

Custom HR Software Development for Workforce Systems of Record

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HR software development services means designing and engineering the system that holds the employee, the candidate, and the pay event — then writing those objects back to the directory and ledger your company already trusts. It is not a per-employee SaaS license, and it is not a “best HR software” roundup. WTT Solutions is a US-facing custom software company. We build HRIS, ATS, payroll, onboarding, and benefits products for HR-tech startups, mid-market People Ops teams, healthcare workforce employers, and PE-backed rollups that have outgrown a connector catalog. Our hr tech software development services start from a named record: hire date, location, pay group, requisition status — not a generic “people module” slide. Human resources software development on this hub is the same job under a longer name: one person, one identity, one audit trail when they are hired, moved, paid, or terminated.

Who we build for is specific. An HR-tech founder who will sell the product needs multi-tenant tenancy and billing on digital platform development services, not this hub. A single-tenant ERP or field-service overlay that is not HRIS belongs on enterprise software development services. Course delivery, SCORM, and corporate academies live on EdTech software development — we only assign training from the employee row. Native ESS and recruiter apps are scoped with mobile app development. Hiring-model evals and RAG assistants as a standalone SKU sit on AI development services; the ATS product and NYC Local Law 144 evidence stay here. Shift and meeting AI calendars are AI scheduling software development. We do not operate payroll, and we do not claim SOC 2 or ISO certificates WTT does not hold — we design controls and evidence packs. Cases that already prove the objects: Insynctive (broker-managed HRIS and benefits) and Paidiem (contingent timesheets and pay). US mid-market HR teams usually arrive after a connector catalog failed a unique workflow; HR-tech founders arrive because the product is the company. Both need the same honesty about what this page will not rank for.

Why Fragmented HRIS, ATS, and Payroll Fail US Employers

The failure is a second ledger — not a missing dashboard widget.

3+systems holding one employee

Fragmented HRIS, ATS, and payroll

The candidate is hired in the ATS, the employee is opened again in HRIS, and payroll gets a CSV on Thursday. Duplicate national IDs and stale assignments appear after save. Custom HR software development keeps one named employee across those events, with live write-back instead of overnight files.

LL144NYC AI hiring audits expect evidence

AI hiring risk without an audit trail

EEOC guidance, NYC Local Law 144, and OFCCP reviews ask for the bias test, the human override, and the purpose log on the application — not a slide. If the model lives only in a vendor demo, you cannot produce the record. We attach that evidence to the candidate and requisition.

Same dayterminate must disable the IdP row

Identity drift without SCIM or SAML

Accounts that provision by spreadsheet stay live after termination. We provision with SCIM and sign people in with SAML 2.0 SSO so the directory you already run — Okta or Entra — is the identity store. Disable rides the employment event, not the next payroll file.

50US states, one pay-group conflict

Multi-state rules and OFCCP trails

Closed pay periods, location-specific tax hooks, and OFCCP applicant-flow logs fail when each state is a sidecar spreadsheet. Conflict must go grey before save. Healthcare employers also need workforce HRIS here — clinic rosters as care ops stay on healthcare, not this page.