Salary Index makes pay transparent across Nigeria without exposing the people behind the numbers. Here is how a salary goes from a submission to a public listing — how we source, verify, analyse, transform and anonymise it. We publish the numbers, not the people.
1. Sourcing the data
Much of our data comes from professionals reporting their own pay through our form. The rest we draw from data already gathered elsewhere — public salary surveys, shared spreadsheets and community datasets — and from openly available sources like company career pages, pay a company has reported itself, and public reports and articles.
Every source goes through the same process below: verify, analyse, anonymise. Entries range from anonymous self-reports to figures backed by evidence, and we label each one by how it reached us, so you always know how much weight a number carries.
2. Verifying the data
When a contributor opts in, we use a work email, LinkedIn profile or payslip to confirm the submission is real — then discard it. None of that evidence is ever published or kept in the public dataset.
Every figure also gets a sanity check: anything implausible for the role is flagged before it goes live. A company is named alongside pay only when the company itself made that pay public.
3. Analysing the data
We classify each entry by what the role actually is — function, seniority, industry, location, company type — not by its job title. So a software engineer and a sales engineer never land in the same average just because both titles say “engineer.”
We also convert every pay structure — currency, gross or net, how bonuses are counted — into one comparable monthly figure, without rounding away the real number. Each entry stays an individual, anonymous salary listing: an exact figure with no person attached, browsable next to every other.
4. Transforming the data
Specifics that could single someone out get generalised. Free-text job titles map onto a fixed set of roles named by seniority tier and sub-track; duplicate labels are merged; notes are stripped of anything that could identify a person or trace a figure back to its source.
Only recent years go public. Older submissions stay in our internal archive, so what you browse reflects the current market.
5. Anonymising the data
By the time an entry is published, everything that could identify the person is gone and the revealing specifics are generalised into tiers and tracks. We show the salary listing, never the person behind it.
A real employer name appears only when that company already published the figure itself. Otherwise the entry sits behind a label that describes the kind of company without naming it.
What we never publish:
- Names, email addresses or LinkedIn profiles
- Offer letters, payslips or any uploaded documents
- Your employer's name — unless the company itself disclosed the pay publicly
- Any free-text detail that could point back to a specific person
6. Questions
Salary Index is operated by Paxizon Technologies Limited. For questions about how we handle data, or to have an entry reviewed or removed, contact us at paxizon@gmail.com.