Web · Live on Vercel
DoorGo
Property and hostel platform: bookings, rent payments, maintenance.
★ … ·
Welcome · --:-- in Nairobi
Open to remote work · 3+ yrs experience
BRIAN ONYANGO
EZEKIEL
AI Evaluation & Red Teaming Specialist
I design adversarial safety evaluations for frontier AI agents and keep annotation pipelines honest.
currently
Freelance AI Red Teamer
Alice Collective · Nov 2026 – Present
AI Annotator
Multimango (RWS) · 2026 – Present
ABOUT
AI evaluation specialist with hands-on experience in LLM red teaming, multilingual data annotation, and customer operations. Currently designing adversarial safety evaluations for frontier AI agents while supporting AI annotation workflows.
Background spanning AI, healthcare, logistics, and digital services — calm, precise, and at home in remote-first teams.
- Location
- Nairobi, Kenya
- Education
- B.Sc. Computer Science, Kirinyaga University (in progress)
- Certificate
- Google Data Analytics, Coursera (2024)
Day to day I split my time between freelance red teaming for Alice Collective, AI annotation with Multimango (RWS), and my computer science degree — so I see frontier-model safety from the builder's, the annotator's, and the student's angle at once.
- Nairobi, Kenya
- EAT (UTC+3)
- Remote-first
- Replies within a day
- English
- Kiswahili
Currently learning: advanced adversarial eval techniques for frontier agents
- Precision
- Honesty
- Speed
- 2022 BSc begins + computer cert
- 2023 Café tech → clinic front desk
- 2024 Analytics cert → Powwater ops
- 2026 RWS annotator → Alice red teamer
Filter:
Technical skills
Tools
- AgenticVerse
- MS Office
- E-Citizen
- Spreadsheets
- R
- Git & GitHub
Skill radar
Ask me about
- Red teaming
- Prompt injection
- Annotation QA
- Side projects
Currently
Taking on freelance AI evaluation and annotation work. Best reached by email — I reply within a day.
Experience
-
2026
Alice Collective (Alice.io) — Freelance AI Red Teamer
Design adversarial prompt-injection tasks used to post-train frontier models. Author YAML scenarios with personas, attacks, verifiers, and rubrics; validate each against state-of-the-art models.
Key win: iterated a Booking PIN-phish eval to 50% attack success across dev rollouts.
-
2026
Multimango (RWS) — AI Annotator
Review text-to-speech and conversational AI outputs for quality and guideline adherence across multilingual datasets.
Key win: consistent rubric application across multilingual TTS and chat datasets.
-
2024
Powwater Ltd — Operations & Driver Assistant
Coordinated delivery operations and dispatch; fixed bottlenecks from order data and drove a 15% lift in repeat orders within two months.
Key win: +15% repeat orders in two months from order-data fixes.
-
2023
Executive Dental Clinic — Front Desk Receptionist
Scheduling, follow-ups, and insurance coordination with strict digital-record privacy compliance.
Key win: reliable scheduling and follow-ups with privacy-compliant records.
-
2023
Glorious Cyber Café — Technician
e-Citizen services and computer-basics training for walk-in customers.
Key win: trained walk-in customers in computer basics and e-Citizen services.
Education
- B.Sc. Computer Science (in progress)Kirinyaga University · 2022 – Present In progress
Programming, information systems, and database management — building toward AI systems and data.
- Google Data Analytics CertificateCoursera · 2024
Data cleaning, analysis, and visualization with spreadsheets, SQL, Tableau, and R.
- Certificate in Computer Studies (Distinction)Green Africa Global Foundation · 2022
Computer packages, internet research, and digital productivity tools.
- Kenya Certificate of Secondary Education (B Plain)Kisumu Boys' High School · 2018 – 2022
Graduated with a B plain — the foundation for university computer science.
- Google · Data Analytics
- Kirinyaga University
- Green Africa Global Foundation
What can I do?
End-to-end red-team tasks: attack narrative, seeded personas and context, success criteria — iterated against frontier models until they bite.
Production YAML scenarios with entities, plant data, deterministic verifiers, and model-graded rubrics on the AgenticVerse platform.
Review of text-to-speech and conversational AI outputs against rubrics — consistent labels and documented edge cases.
Spreadsheet, SQL, Tableau, and R workflows: cleaning, analysis, and charts that answer the question. Google Data Analytics certified.
Quality and guideline-adherence review across multilingual conversational datasets for model improvement.
15%repeat-order lift at Powwater
50%dev attack-success on eval v4
3live projects shipped
2active AI contracts
Hackathons
Continuously engaged across study and work since 2022.
PORTFOLIO
Featured project
DoorGo — live property platform
Hostels, bookings, and rent payments in production.
App · TypeScript
StoryNest
Story-sharing app with mobile, web, and backend releases.
★ … ·
Web · React + Firebase
Executive Dental
Dental clinic website, live in production.
Independent client build · code on request
PROOF
References
Available as a professional referee.
Available as a professional referee.
Available as a professional referee.
Clients & employers
- Alice Collective
- Multimango (RWS)
Press kit available on request — just ask.
BLOG
All postsRed teaming · 3 min
How I red-team an AI agent
My loop: map the surface, plant the trap, measure the bite.
Read postAnnotation · 3 min
From annotation to adversarial evals
What labeling thousands of outputs taught me about breaking models.
Read postCraft · 2 min
A CV verified by code, not eyeballs
Every text item machine-checked inside the page frame.
Read postCONTACT
Prefer email — fastest way to reach me.
- Emailbrianonyango229@gmail.com
- Phone+254 700 911 507
- WhatsAppChat on WhatsApp
- GitHubgithub.com/BrnEzekiel
- LocationNairobi, Kenya
Replies within a day
- Upwork — profile on request
- Fiverr — profile on request
Proposal template · Process one-pager
Two revision rounds included on every engagement.
Questions, answered
Usually within a week for annotation and eval work; larger builds depend on scope — ask and I'll give you a date.
Short written brief, milestones with demos, async updates on your channel of choice. See the process one-pager for the full flow.
Yes — pick "Book a call" in the form above and suggest two times (EAT). I confirm within a day.
Exclusively — Nairobi-based, remote-first, comfortable across time zones.
SHIPPED
- Nov 2026 Portfolio relaunched on brnezekiel.me with blog, proof wall, and working contact form.
- Nov 2026 CV rebuilt pixel-faithful; every line machine-verified inside the frame.
- Nov 2026 Started freelance AI red teaming with Alice Collective.
- 2026 Joined Multimango (RWS) as an AI annotator.