SEO Expert - Organic Growth Specialist

Mercor; Greater London; On-site; GBP 60,000 - 90,000; Full time

Job summary

Obsidian in London seeks a hands-on growth/SEO practitioner to design and pressure-test Organic Growth environments. You will craft task briefs, specify required documents, dashboards, personas and tool states, and write the reference answer and scoring criteria.

You will review AI agent attempts, judge them against the rubric, and help orchestrate multi-tool workflows across analytics, CMS, and marketing tech.

Qualifications

• Hands-on practitioner experience in organic growth or SEO/AEO.
• Fluent in the tools of the domain: GA4, Google Search Console, Semrush or Ahrefs, and a CMS such as Contentful.
• Prior experience building AI training environments, RL environments or simulated case studies is strongly preferred.

Responsibilities

• Design task briefs drawn from your organic growth work, including what the task is testing.
• Specify the documents, dashboards, personas and tool states a realistic version of that task requires.
• Write or review the reference answer and the criteria that separate a strong response from a plausible-but-wrong one.
• Review AI agent attempts and judge them against your own standard.

Skills

Organic growth

SEO / AEO

GA4

Google Search Console

Contentful CMS

Tools

GA4

Google Search Console

Semrush

Ahrefs

Contentful

Job description

About the work

We are building high-fidelity simulated work environments used to evaluate and improve AI agents on real marketing work. Each environment reproduces a marketing org's actual tool surface — email, storage, CRM, project management, social media management, web analytics, AEO/SEO, ads, CMS, product analytics and support — populated with realistic documents, dashboards, personas and deliberately planted problems.

You will help design and pressure-test the Organic Growth environments: the briefs, the artifacts, the judgment calls a strong practitioner would make, and the errors a weaker one would miss.

What you will do

• Design task briefs drawn from work you have actually done in organic growth, including what the task is really testing — the planted issue and the decision a strong practitioner should reach
• Specify the documents, dashboards, personas and tool states a realistic version of that task requires
• Write or review the reference answer and the criteria that separate a strong response from a plausible-but-wrong one
• Review AI agent attempts and judge them against your own standard

Tasks span the capabilities we measure: diagnosing what happened from messy or conflicting data, prioritizing and making tradeoffs, planning and executing, QA and reconciliation, triage and escalation, research and evaluation, reporting, and orchestrating multi-step work across several tools.

Organic Growth scope

Search and answer-engine visibility, content-led acquisition, technical and on-page diagnosis, keyword and topic prioritization, web and pricing journey optimization, and funnel diagnosis on organic traffic.

Who we are looking for

• Hands-on practitioner experience in organic growth or SEO/AEO — you have owned this work, not only managed people who do it
• Fluent in the tools of the domain: Google Analytics 4, Google Search Console, Semrush or Ahrefs, and a CMS such as Contentful
• Prior experience building AI training environments, RL environments or simulated case studies is strongly preferred
• Rubric Academy or Rubric Bootcamp certification is strongly preferred
• Clear written reasoning — much of the value is in explaining why a decision is right

Screening

Applicants complete a short multiple-choice knowledge screener specific to this sub-domain before review.