# Joe Karlsson (@JoeKarlsson) on youtube

- id: koinon:creator:youtube_joekarlsson
- url: https://koinonlink.com/kol/youtube/JoeKarlsson
- schema_version: 1.4

## Identity
- platform: youtube
- handle: JoeKarlsson
- platform_url: https://www.youtube.com/@JoeKarlsson
- country: United States
- entity_type: creator
- person_id: koinon:person:tiktok_joekarlsson

## Reach
- followers: 3440
- posts_observed: 45
- verified: false
- size_tier: nano

## Engagement
- status: not_collected
- status_note: Engagement has not been collected for this creator yet. This is a gap in our collection, NOT a statement that the creator has no engagement. Follower count is known, so it is measurable.
- unit_note: engagement_rate and peak_post_engagement_rate are ratios (0-1); avg_interactions_per_post and best_post_interactions are absolute counts. Read status before reading any number: a null rate has several different causes and status says which one applies here.

## Content
- category: software
- subcategory: devtools
- category_confidence: 0.9
- category_source: derived_from_recent_content
- topics: Software engineering career advice and job hunting, Learning React, TypeScript, and web frameworks, Tech stack decisions and DevOps basics, Interview prep, portfolios, and junior engineer growth, Humorous takes on developer daily life and learning methods
- bio: Joe Karlsson (He/They) is a Database Engineer turned Developer Advocate (and massive data nerd) currently working at ...

## Audience (inferred)
- status: present
- description: Junior software engineers and coding bootcamp graduates focused on web development and career growth
- roles: dev
- seniority: practitioner
- pain_points: Navigating a tough tech job market and interviews, Choosing the right tech stack or learning path after bootcamp, Handling real-world dev stress like on-call, bugs, and production issues, Building effective portfolios and leveling up technical skills
- posts_analysed: 48
- confidence: 0.75

## Commercial (inferred)
- audience_buyer_fit: 0.9
- promotion_intent: 0.7
- open_to_collaboration: false
- contact: Koinon does not publish creator contact details.

## Quality signals
- authenticity_score: 38
- authenticity_basis: profile_shape_only
- credibility_score: 38
- flagged_for_review: false
- koinon_bd_grade: C — measures Koinon partner-outreach fit, not creator quality
- interpretation: Signals for triage, not verdicts. A flag means the profile is worth a manual check.

## Provenance
Every inferred field below carries how it was produced. Facts stay facts; inferences stay inferences.

- audience.description: source_type=ai_inferred, confidence=0.75, freshness_days=79, method=llm_persona_from_recent_content
- audience.roles: source_type=ai_inferred, confidence=0.75, freshness_days=79, method=llm_persona_from_recent_content
- audience.seniority: source_type=ai_inferred, confidence=0.75, freshness_days=79, method=llm_persona_from_recent_content
- commercial.audience_buyer_fit: source_type=ai_inferred, confidence=0.6, freshness_days=19, method=llm_scorer — Relative signal within Koinon indexing, not a market-wide score.
- commercial.promotion_intent: source_type=ai_inferred, confidence=0.6, freshness_days=19, method=llm_scorer
- quality.anomaly_flags: source_type=heuristic, confidence=0.5, freshness_days=49, method=profile_snapshot_and_engagement_ratio_heuristic — Means "worth a manual check", NOT confirmed fraud. Flags can be wrong and are not a verdict about the person.
- quality.authenticity_score: source_type=heuristic, confidence=0.25, freshness_days=19, method=Profile-shape heuristic from a single snapshot (follower count, following ratio, account age, posting volume, verification), reduced for engagement red flags where post engagement was collected. Where only a follower count is available the score saturates at 58. — The input set differs by platform; do not compare this score across platforms.
- quality.koinon_bd_grade: source_type=ai_inferred, confidence=0.5, freshness_days=49, method=llm_partner_fit_classifier + fit_score >= 0.6 AND authenticity >= 60 => A; fit_score >= 0.4 AND authenticity >= 45 => B; else C. authenticity < 30 or a promotional-pattern flag => quarantine. — Koinon partner-outreach fit, not creator quality.
- reach.followers: source_type=observed, confidence=0.95, freshness_days=49, method=platform_profile

## Freshness
- profile_checked_days_ago: 49
- content_analysed_days_ago: 19
- audience_updated_days_ago: 79

## AI retrieval
- indexing_requests: 8
- user_triggered_requests: 0
- note: Being indexed in bulk is not the same as being retrieved to answer a question.

## This profile
- Claim or correct: https://koinonlink.com/claim?k=youtube_joekarlsson
- Request removal: https://koinonlink.com/claim?k=youtube_joekarlsson
- Terms: https://koinonlink.com/for-ai