Portfolio Project — NLP Security Research

Semantic
Threat Detector

A real-time semantic analysis engine that identifies hidden manipulation patterns, prompt injections, and adversarial intent that keyword filters miss — using vector-space clustering and AI-powered projection layers.

NLP · Semantic Analysis AI Security Prompt Injection Defense Adversarial ML Claude API

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System Architecture

How the detector works

Five pipeline stages transform raw text into a semantic threat profile — detecting what words alone cannot reveal.

STAGE 01

Input ingestion

Raw text enters the pipeline. No preprocessing that could destroy semantic signal — punctuation, casing, and syntax preserved.

STAGE 02

Semantic embedding

Text is converted to a dense vector in high-dimensional space. Words with similar intent cluster — even if surface forms differ entirely.

STAGE 03

Threat projection

A learned projector layer rotates the embedding space so threat-relevant dimensions become separable from benign signal.

STAGE 04

Cluster proximity

The projected vector is compared against known threat cluster centroids. Distance in semantic space becomes a probability score.

STAGE 05

Signal extraction

Interpretable signals are extracted — attack type, intent trajectory, manipulation pattern, and confidence with human-readable reasoning.

Interactive Demo

Analyze text for semantic threats

Submit any text. The AI engine analyzes it for hidden manipulation patterns, prompt injections, adversarial framing, and semantic drift.

TRY A SAMPLE INPUT

scanning semantic space…

THREAT SCORE

Classification

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Attack vector

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Semantic cluster

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Confidence

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Semantic analysis

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Career Intelligence

Jobs in semantic AI & research

This skillset sits at one of the hottest intersections in tech. Here are the roles it maps to — from entry points to frontier research.

Entry level

NLP Engineer

$110k – $155k

Build and maintain NLP pipelines. Work with embeddings, tokenization, and semantic search systems. High demand across every industry.

PythonHuggingFaceSBERTspaCy

Entry level

ML Security Analyst

$120k – $165k

Monitor AI systems for adversarial inputs, prompt injections, and behavioral anomalies. Your cybersecurity background is a direct advantage here.

LLM securityOWASP LLMPythonthreat modeling

Mid level

AI Red Teamer

$160k – $225k

Think like the attacker. Your job is to break AI models before real adversaries do — using semantic attacks, prompt injection, and adversarial NLP.

adversarial NLPTextAttackjailbreakingzero-trust mindset

Mid level

Semantic Search Engineer

$140k – $195k

Design retrieval systems that understand meaning, not just keywords. Powers enterprise search, RAG pipelines, and knowledge systems.

vector DBsFAISSRAGLangChain

Senior level

AI Safety Engineer

$180k – $260k

Design guardrails, alignment systems, and safety evaluations for deployed AI. One of the fastest-growing roles at frontier AI labs (Anthropic, OpenAI, Google DeepMind).

RLHFConstitutional AIeval designinterpretability

Senior level

AI Governance Specialist

$130k – $190k

Bridge technical AI risk and policy compliance. EU AI Act, NIST AI RMF, MITRE ATLAS. Your applied AI degree maps here directly.

EU AI Actrisk frameworksfairness auditingGDPR

Research

NLP Research Scientist

$170k – $280k+

Publish novel research on language model behavior, semantic representations, and adversarial robustness. Typically requires MS/PhD or equivalent portfolio.

research designPyTorchtransformerspaper writing

Research

Mechanistic Interpretability Researcher

$200k – $350k+

Understand what AI models actually compute internally — which circuits encode meaning, how concepts are stored, where threats hide in activations. Anthropic's frontier.

circuits researchactivation patchingprobing classifiers

Connect on LinkedIn — Dayo Egonu

SemanticThreat Detector

Semantic
Threat Detector