SAP SuccessFactors
Employee Central, position management, time and compensation, and the data model underneath. Deep work on payroll interfaces.
HR data governance · Software publishing
I do not hand over a document. I hand over a working system.
Master data governance and delivery on the large HR platforms, SAP SuccessFactors Employee Central first among them, and software I design and run myself. One practitioner, accountable from the workshop to production.
01
Advisory
I work inside the platform: configuration, master data, interfaces, payroll and the decisions that hold them together. When a build slips, I am the person who opens the system.
Currently engaged on the SAP SuccessFactors programme of LVMH.
Platforms
SuccessFactors is my daily platform and my depth. Oracle HCM Cloud and PeopleSoft come from earlier in my career, and I list them because legacy estates outlive their owners.
Oracle HCM Cloud
Core HR and workforce structures, fast formula and HDL loads, extracts for finance and payroll consumers.
PeopleSoft HCM
Legacy estates that still run payroll every month: maintenance, extraction, and the road out toward cloud.
Engagements
- A.01
Data governance and quality
Master data ownership, duplicate detection, mass correction, controlled loads, and an audit trail that holds up. On my current engagement: seven detection levels across 410,000 records, monthly cleansing campaigns on 40 business rules, and a three-consultant programme run against fixed release dates. I define who owns which data and who may change it, then I enforce it in the platform.
- A.02
Deployment
Design workshops to go live, including cutover, hypercare and handover to the internal team.
- A.03
Integrations
Payroll, finance, identity and learning systems, file based or API based, monitored, failure handled by design.
- A.04
Transformation
Target operating model, harmonisation across countries, and sequencing that keeps a programme deliverable.
- A.05
Payroll
Interfaces, retroactivity, control reports and reconciliation, in local and outsourced setups.
Sectors served
- Luxury
- Retail banking
- Insurance
- Public transport
- Cinema
- Social housing
Client names are covered by contractual confidentiality, so I describe sectors, platforms and types of work only.
02
Compliance
One tool I built and run is formally classified HIGH-RISK under the EU AI Act (Regulation EU 2024/1689).
I maintain the regulatory checklist and keep the file audit-ready. GDPR end to end on the HR data domain, Article 50 transparency on my own products, access control and segregation of duties enforced through Role Based Permissions.
For a UAE client this matters in one specific way: a group operating across Europe and the Gulf carries European obligations on its European entities. I have already built against them.
03
Products
Not a catalogue. The software is the proof: advisory without execution is only an opinion.
In production
Vinca
Designed, developed, deployed, secured and brought into compliance by one person.
Scope of work, one hand
- 01Product definition, information architecture and interface design
- 02Front end application, written end to end
- 03Back end services, data model and migrations
- 04Third party API integrations and rate handling
- 05Domain, DNS, certificates and network configuration
- 06Hosting, deployment pipeline, versioning and rollback
- 07Monitoring, logging and error tracking in production
- 08Authentication, sessions and access control
- 09Payments, billing and the subscription lifecycle
- 10Security hardening, secret management and backups
- 11Privacy policy, terms, data retention and GDPR records
- 12Support, and every incident answered by the same person
In preparation
Two further applications are in build, one consumer facing and one for HR teams. I will name them when they are live, not before.
04
Evidence
A career, not a season
I have worked on the same family of HR platforms long enough to have seen them upgraded, replaced and inherited.
Enterprise scale
Large groups and multi entity organisations, where a data error reaches payroll the same month.
Worldwide perimeters
Global scopes across regions and legal entities at once, local requirements against central governance. Seven countries integrated after acquisition, the United Arab Emirates among them.
Two working languages
Workshops, documentation and delivery in English and French, with the same precision in both.
05
Founder
GHI Consulting is one person. You speak to the person who does the work, and the person accountable for it.
guillamo.com- Structure
- Single practitioner
- Priority market
- United Arab Emirates
- Also serving
- Europe
- Languages
- English, French
06
Contact
Tell me which platform you run, what has to be delivered, and by when.