Custom HRMS Development Services

HRMS Development Services

Generic HRMS platforms cover the common cases. They struggle when your workforce structure, pay rules, or compliance requirements don't fit their data model. When you have contractors alongside employees with different entitlement rules. When your payroll has commission structures, shift differentials, or multi-country variations that the standard platform handles badly. When your organisation structure is complex enough that off-the-shelf role hierarchies break.
We build custom HRMS systems for organisations whose workforce complexity has outgrown what a standard platform can handle cleanly.

See our work
  • Custom HRMS built around your actual workforce structure and pay rules

  • Payroll processing, leave management, and compliance built to your specific requirements

  • Integration with your existing finance, identity, and operations systems

  • Shipped a hybrid remote workforce management platform used by 10,000+ employees

Recent outcomes

HRMS · Hybrid workforce platform

Built a custom HRMS for a hybrid remote workforce with complex shift differentials and multi-country payroll, replacing a heavily customised off-the-shelf system.

10,000+ employees managed

Automation · HR onboarding workflows

Automated onboarding and offboarding workflows, eliminating manual account provisioning steps that previously took the HR team 2 days per new hire.

70% reduction in admin time

Integration · HRMS + ERP sync

Integrated a custom HRMS with a client's SAP ERP, passing payroll journals and headcount data bidirectionally with zero manual re-entry.

0% payroll reconciliation errors
4.9 / 5 on ClutchSee all work

Recognition

Sound familiar?

  • Payroll system requiring manual workarounds every cycle because your pay rules don't fit the template?

  • HR team maintaining shadow spreadsheets alongside your HRMS because the system can't handle your structure?

In short

RaftLabs builds custom HRMS for US and UK organisations whose workforce complexity outgrows Workday or BambooHR. We handle multi-country payroll, contractor management, shift differentials, and complex org hierarchies. 100+ products shipped. Most builds deliver in 14 to 20 weeks at a fixed price.

Trusted by

Vodafone
Nike
Microsoft
Cisco
T-Mobile
Aldi
Heineken
GE

Software delivery, by the numbers

software products shipped
100+
average time to first production release
12 weeks
rated by clients on Clutch
4.9/5
years delivering software for established businesses
9+

Off-the-shelf HRMS works until your workforce doesn't fit the template

Most HRMS platforms are designed for a standard workforce. When your structure diverges from that standard, mixed employment types, complex pay rules, multi-jurisdiction compliance, or unusual organisation hierarchies, the platform requires expensive customisation, generates workarounds, or simply can't do it correctly.

The cost of those workarounds (staff time, error risk, compliance exposure) often exceeds the cost of building a system that works correctly from the start.

Capabilities

What we build

Employee records and organisation management

Central employee records built on a data model that accommodates your actual workforce structure rather than forcing it into a standard employee/manager hierarchy. PostgreSQL with JSONB columns for employment-type-specific custom fields: permanent employees, contractors, agency staff, and zero-hours workers each have different mandatory fields and entitlement rules, and the schema enforces the right fields per type. Organisation hierarchy stored as an adjacency list supporting multiple reporting lines for matrix organisations, an employee with a functional manager and a project manager appears correctly in both reporting chains without duplication. Document management with S3 storage, per-employee access controls, and retention period enforcement: employment contracts, right-to-work documents, and performance review records with configurable retention schedules per document type. Employee self-service portal for personal data management, payslip retrieval, document submission, and request submission, reducing HR admin volume for the routine updates that don't require HR involvement. Active Directory or Google Workspace account lifecycle sync: employee creation and termination in the HRMS triggers account provisioning and deprovisioning automatically.

Payroll processing

Payroll calculation built around your actual pay rules rather than configured around what the standard platform's template supports. Tax calculation with jurisdiction-specific tables maintained as data not code: UK PAYE bands, National Insurance employee and employer contributions, and Student Loan deductions; US FICA employee/employer rates, federal and state income tax withholding tables by state; Australia PAYG withholding with tax tables from the ATO. Commission structures with multi-period accumulation logic: a commission plan with quarterly accelerators requires knowing YTD attainment against quota, not just this period's sales figure. Shift differentials applied by time-of-day and day-of-week rules with the specific multiplier your agreement specifies. Bank transfer file generation in the format required by your banking provider: BACS in the UK, NACHA ACH in the US, direct credit files for Australian banks. Payroll GL journal posting to your finance system with the cost centre and department allocation split correctly across the chart of accounts, not a single payroll expense line that finance manually re-allocates. Integration with external payroll providers (ADP, Paylocity, Sage Payroll) where jurisdiction complexity makes a dedicated provider the right approach.

Leave and absence management

Leave management built around your entitlement rules and the jurisdiction-specific statutory minimums that apply to your workforce. UK statutory minimum 5.6 weeks (28 days for full-time employees) with pro-rata calculation for part-time workers based on contracted hours and mid-year joiners based on start date. US FMLA 12-week unpaid leave tracking with certification deadline management and designation letter generation. Australia National Employment Standards: 4 weeks annual leave, 10 days personal/carer's leave, long service leave with jurisdiction-specific accrual rates. Accrual calculation methods configured per employment type: per-day accrual, per-pay-period accrual, front-loaded annual grant. Carry-over cap enforcement: the system applies the carry-over rule automatically at year-end rather than requiring HR to manually audit each employee's balance. Manager approval workflow with calendar visibility, the approving manager sees the team calendar before approving overlapping leave requests. Bradford Factor scoring for absence pattern monitoring: the rolling 52-week Bradford Factor calculated per employee with automated notification to HR when a threshold is breached.

Time and attendance

Time tracking for hourly, shift, and project-based workforces, designed for the specific clock-in mechanism your operation uses. Web clock-in with IP whitelist validation for office workers; mobile app clock-in with GPS geofencing for remote and field workers (employees can only clock in when within the configured geofence of their assigned site); QR code or NFC tag clock-in for manufacturing and warehouse environments where workers don't carry personal devices. Shift scheduling and roster management with drag-and-drop shift assignment, shift swap request workflow (employee requests a swap, the covering employee accepts, manager approves), and minimum rest period enforcement between shifts. Overtime calculation with jurisdiction-specific rules: daily overtime threshold for California (8 hours/day) vs. weekly threshold for most other US states, different multipliers for double time vs. time-and-a-half. UK Working Time Regulations 48-hour weekly average monitoring: the rolling 17-week average calculated automatically with opt-out agreement tracking per employee. Break compliance alerts when logged hours violate mandatory break rules. Hours data feeds directly into payroll calculation at period end with no manual re-entry.

Performance management

Performance review cycles with configurable rating scales, goal frameworks, and multi-source feedback, built for the review process your organisation actually runs rather than the generic template most HRMS platforms impose. Goal tracking with OKR or SMART framework support: company-level OKRs cascade to department and individual goals with parent-child linking, so an employee's goals are visible in context of the team's objectives. 360-degree feedback with configurable respondent selection (self-nomination with manager approval, or manager-assigned), anonymity controls (responses visible to manager only or to the reviewee), and structured rating dimensions alongside free-text. Calibration session tooling: the calibration view shows all direct reports rated by their manager against the configurable scale, with distribution metrics (are ratings clustered at one point on the scale?) visible to the HR facilitator. Forced distribution or relative ranking as an optional calibration mechanism where your policy requires it. Merit increase recommendation workflow: performance rating maps to a suggested merit increase band, manager recommends a specific increase, HR approves within policy or escalates exceptions. Performance history linked to promotion and succession planning records.

Compliance and HR reporting

HR compliance reporting for your operating jurisdictions built into the system so regulatory deadlines are met from routine data rather than a manual data-gathering exercise every reporting period. US: EEO-1 Component 1 report formatted for EEOC submission, FLSA classification compliance reports flagging employees at overtime risk, FMLA leave tracking with certification deadlines and designation letter generation. UK: Gender Pay Gap report in the GOV.UK submission format (mean and median pay gap, bonus gap, pay quartiles), Working Time Regulations compliance report flagging employees approaching the 48-hour average. GDPR data subject access request (DSAR) workflow: structured request intake, automated data export across all HRMS modules, 30-day deadline tracking, and right-to-erasure workflow with audit trail of what was deleted and when. Data retention scheduling: employment records retained for the required period by jurisdiction (6 years in the UK for most employment records) then flagged for deletion rather than retained indefinitely. Append-only audit trail for every HR system action, exportable for employment tribunal evidence, SOC 2 access reviews, and internal HR audits. Headcount, turnover, cost, and diversity reports for leadership as scheduled PDF or live dashboard.

How we work

From scope to shipped

Every HRMS project follows the same four phases. Scope is locked and price is fixed before development starts.

  1. Week 1
    01

    Discovery and scope

    We map your workforce structure, pay rules, compliance requirements, and integration points. You leave week 1 with a written scope document and a fixed-price quote. No development starts without your sign-off.

  2. Weeks 2-3
    02

    Data model and architecture

    The data model is the foundation of every HRMS build. We design the schema to accommodate your actual workforce types, employment classifications, and org hierarchy before writing a line of application code. Architecture decisions made here are ten times cheaper than the same decisions made in week 8.

  3. Weeks 4-16
    03

    Build, integrate, and QA

    Working software at a staging URL by the end of sprint one. Bi-weekly demos. Integration with your finance, identity, and ERP systems built in parallel with the core modules. QA runs alongside every sprint, not as a phase at the end.

  4. Weeks 16+
    04

    Launch and post-launch support

    Production deployment with monitoring activated on launch day. Payroll parallel runs completed before cutover. 8 weeks of post-launch support included in every project.

Why us

Why teams choose RaftLabs

  1. Senior engineers build what they scope

    The engineers who assess your HRMS requirements also build the solution. No bait-and-switch, no offshore handoff after the contract is signed. The team you meet in week 1 ships in week 16.

  2. Fixed price before development starts

    We scope the work, calculate the cost, and lock it in writing before any development starts. A scope change is a change request: priced, agreed, or dropped. It never absorbs into the project and appears on the final invoice.

  3. 9 years and 100+ products shipped

    Clients include Vodafone, T-Mobile, Aldi, Nike, Cisco, and Lockheed Martin. Track record across AI, SaaS, mobile, automation, and enterprise platforms across healthcare, fintech, logistics, and hospitality.

  4. Compliance built in from the start

    GDPR, HIPAA, SOC 2 — compliance requirements are scoped in week 1, not retrofitted before launch. We have shipped GDPR-compliant HR systems for European clients and HIPAA-adjacent workforce platforms for US healthcare organisations.

Tell us what your current HRMS can't do.

Workforce structure, pay rules, and the workarounds your team lives with. We'll design the system and give you a fixed cost.

Frequently asked questions

Off-the-shelf HRMS platforms work well for standard workforce structures with common pay rules and single-country operations. Custom development makes sense when: your workforce mix (employees, contractors, agency staff, and part-time workers with different entitlements) doesn't map cleanly to a standard data model; your pay rules include commission structures, shift differentials, or multi-country variations that require expensive customisation of the standard platform; your compliance requirements are jurisdiction-specific enough that standard platforms handle them poorly; or you need deep integration with existing systems (finance, ERP, operations) that the standard platform's integration capabilities can't support.

A custom HRMS covers the core HR operational functions: employee records and organisation structure management, payroll processing (or payroll data preparation for a payroll provider), leave and absence management, time and attendance tracking, performance management, onboarding and offboarding workflows, compliance and reporting, and an employee self-service portal. The modules built depend on your requirements, some organisations need all of these, others need a subset built to a higher specification than any off-the-shelf platform provides.

Multi-country payroll is typically the highest-complexity element of an HRMS build. We handle it in two ways depending on scale and requirements. For smaller multi-country operations, we build payroll calculation logic for each jurisdiction into the HRMS with country-specific tax tables, statutory deductions, and reporting formats. For larger operations, we build the HRMS as the system of record for employee data and integrate with a dedicated payroll provider (ADP, Paylocity, Payroll HQ, or local providers) for each country's payroll processing, passing clean data and receiving processed payslips back. The approach is determined during scoping.

Yes. HRMS integration with finance systems is a core requirement, not an optional extra. Payroll data needs to flow to your general ledger in the correct cost centre structure. Headcount and cost data needs to be available for financial planning. We build the integration layer between your HRMS and your finance or ERP system as part of the build, typically a bidirectional integration that sends payroll journals to finance and receives cost centre and budget data back.

A focused HRMS covering employee records, leave management, and a basic payroll data module for a single-country organization typically runs $55,000 to $100,000. Full HRMS platforms with payroll processing, multi-country support, performance management, and ERP integration run $100,000 to $180,000. Cost depends on workforce complexity, number of jurisdictions, and integration requirements. We scope every project before pricing it.

Yes. We sign NDAs before any discovery conversation. HRMS projects involve sensitive payroll data, headcount information, and employment records, so we treat confidentiality as a baseline requirement, not an optional extra. We have signed NDAs with clients in the US, UK, and Australia across regulated industries including healthcare and financial services.

Work with us

Tell us what you need. We'll tell you what it would take.

We scope HRMS Development Services in 30 minutes. You walk away with a clear cost, timeline, and approach. No commitment required.

  • Scope and cost agreed before work starts. No surprises. No obligation.
  • Working prototype within 3 weeks of kickoff.
  • Pay by milestone. You see progress before each invoice.
  • 60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
  • All conversations are NDA-protected.