abuja, ng · utc+1 · 7+ yrs in production · remote-first

Senior AI Security & LLM EngineerFounder, Sether

Streaming PII redaction for production LLM APIs

sether · streaming redactionlive

$ openai.chat.completions.create(stream=true)

"Hi, I'm Adaeze Okafor — card 4242 4242 4242 4242 was charged twice. Reach me at adaeze.o@gmail.com."

✓ 3 entities tokenised before the model boundary · GDPR Art. 28 · SOC 2 CC6.7

I help teams ship production LLMs and copilots without turning customer data into a compliance incident: boundary controls, evidence for auditors, and safer retrieval and agents.

Production LLM & AI application security — PII redaction, logging, and boundary controls that satisfy LLM security, AI governance, and GDPR / SOC 2 / HIPAA / EU AI Act expectations.
Founder of Sether — open-source, streaming-native redaction for AI apps (@raeven-co/sether on npm, MIT). Sensitive fields are tokenised before they cross your trust boundary to model providers.
Senior Engineer, Must Company — high-traffic crypto / fintech product (70K+ DAU), NestJS, AWS, and production AI features for a Seoul-headquartered team; secure RAG, agents, and Model Context Protocol (MCP) with LangChain and LangGraph.
Rust plus full-stack delivery — supply-chain and infra security tools on crates.io and npm, alongside TypeScript, Node.js, React, Next.js, and Flutter, so I can own APIs, dashboards, and mobile surfaces end to end.

Open to remote rolesllm & ai securitysecure rag · mcptypescript · rust · flutter

Featured Projects & Open Source

Explore my portfolio of production applications, AI-powered tools, and open-source security packages. From marketplaces serving thousands of users to developer tools protecting software supply chains.

Sether
Streaming-native PII redaction for AI applications. Tokenizes sensitive data before it reaches OpenAI/Anthropic, or swaps it for realistic, reversible decoys (alias engine, new in 0.7.0), and restores it transparently in the response. GDPR Art. 28, SOC2 CC6.7, HIPAA, and EU AI Act compliance evidence built-in. Published on npm (@raeven-co/sether) and PyPI (sether), MIT.
Live sandbox
413/30d
Sether Shield
Chrome extension that catches personal data in your prompt before it reaches ChatGPT, Claude, or Gemini, and can swap it for realistic, reversible decoys instead of masking it. Right-click redact/mask/decoy on any selection, watchlist file import with per-term handling, and restore that survives page reloads. 100% local, zero network calls; built on the open-source @raeven-co/sether engine.
Chrome Web Store
Raeven Reader
Cross-platform intelligence suite: universal reader, web extractor, and meeting notes — Flutter UI, Rust core (PDF/DOCX/MD + prompt-injection sanitizer), Next.js admin, Supabase backend. Built for performance and privacy at the edge.
GitHub
npm_sentinel
Professional-grade security tool protecting development environments from supply chain attacks. Analyzes lifecycle scripts and cross-references npm registry metadata.
crates.io
2/30d
rust_secure_dependency_audit
Comprehensive auditing tool for Rust dependencies. Provides health scoring, license analysis, and footprint estimation for secure software supply chains.
crates.io
3/30d
rag-poison-guard
Sanitizes external content to prevent Indirect Prompt Injection in RAG systems.
npmjs.com
39/30d
hallucination-validator
Validates AI outputs for linkrot, dangerous code, and hallucinations.
npmjs.com
18/30d
advanced-env-manager
Secure environment variable management for Node.js. Features AES-256 encryption, AWS Secrets Manager integration, and strict schema validation.
npmjs.com
11/30d
sether (Python)
The Python port of Sether — streaming PII redaction for AI apps. Sync and async streaming, with httpx / ASGI / WSGI / OpenAI / Anthropic integrations. Faithful 1:1 port of the TypeScript engine. Published as sether (MIT).
pypi.org
157/30d
mobile_secrets_vault
Robust Python package for managing secrets in mobile backends. Diverse encryption, versioning, and audit logging for FastAPI and Django applications.
pypi.org
56/30d
advanced_image_processing_toolkit
Flutter package for AI-powered image processing. Features real-time filters, object recognition (ML Kit), and augmented reality capabilities.
pub.dev
133/30d
skeletonizer_plus
Production-quality Flutter package for automatic skeleton loading states with shimmer animations.
pub.dev
86/30d
flutter_biometric_crypto
Enterprise-grade biometric encryption for Flutter. Secures small secrets using hardware-backed key storage (Android Keystore / iOS Secure Enclave).
pub.dev
92/30d
Raeven Marketplace
AI-powered multi-vendor marketplace platform connecting buyers, sellers, and delivery drivers. Built with Flutter, Node.js, and AI analytics.
raevenmarket.com.ng