Nkosi Felix, Senior Data Platform Engineer

Trust, Accessibility, and Privacy

Verification, privacy, accessibility, and honest limits for this public portfolio.

Accessibility

This site targets WCAG 2.2 AA practices through semantic HTML, keyboard navigation, visible focus states, form labels, skip links, text alternatives, reduced-motion support, and screen-reader-friendly structure.

Accessibility checks are part of the portfolio verification gate, with feedback routed through the public Recruiter Brief contact path.

WCAG 2.2 AA target

Privacy

This site does not use cookies, behavioral advertising, session replay, fingerprinting, or third-party ad networks. The static frontend is readable without login. The chat endpoint accepts only the question you submit and returns an evidence-checked response. This site does not sell or share personal information.

Full statement: Privacy.

AI / crawler readability

This site is intentionally readable by search engines and AI tools: robots.txt, llms.txt, ai-index.json, and proof-pack.json give public crawl rules, model-facing summaries, do-not-infer boundaries, and a machine-readable artifact index.

How Evidence Works

Every factual claim in the answers with sources is checked against a generated, checksummed evidence manifest before it reaches you; unsupported claims fail closed. See the Evidence-Grounded RAG Evaluator lab for a full walkthrough.

Claim lifecycle: a hand-authored ledger entry becomes a checksummed manifest entry, is checked by the policy engine at request time, and is either returned as a validated claim or rejected as unsupported. Ledger entry hand-authored Manifest generated + checksummed Policy Engine checked at request time Returned to you Rejected, not shown

Security boundaries

Platform status

Live checks against the running backend, refreshed each time this page loads.

Badge policy

Self-attested badges map to automated checks in badges.json and claims-register.json -- verification receipts, not legal or third-party certifications.

Each chip corresponds 1:1 to an entry in badges.json; hover or inspect a chip to see which automated check backs it.

Scope

This is a personal portfolio and public evidence system. Public facts are limited to documented work authorization, role fit, stack, projects, sourced answers, and public links; clearance, degree, regulated-service, customer-data, and employer-confidential claims stay out unless documented evidence exists.