OpenTrain

Fenrir Security Researcher

The Fenrir Security Researcher title is paired with cybersecurity vulnerability research and task-creation duties; review the duties and qualifications below before applying.

Field: Cybersecurity
Where: United States, Albania, Algeria, Antigua and Barbuda, Armenia, Australia +89 more
Commitment: part time
Hours: up to 20/week
Posted: 5 days ago

How this pay compares

At $100/hr, this role pays more than 87% of the 56 open cybersecurity roles with a listed pay range, above the median of $70.

Among platforms with 10 or more priced cybersecurity roles, OpenTrain AI has the highest median ($93/hr across 14 roles) and Alignerr the lowest ($50/hr across 33).

OpenTrain AI roles that closed since late October stayed listed a median of 31 days (122 roles). OpenTrain AI posted this one 5 days ago.

Computed from 2,746 open roles we track across Mercor, micro1, Handshake AI, Alignerr, Appen and OpenTrain AI, refreshed daily. Midpoints of listed ranges; “up to” ceilings are left out of medians.

What you would earn at this rate

Rate

$100/hr

Hours a week (listing allows up to 20)20 hrs

Per week, before tax

$2,000

Per month, if the work is steady

$8,667

Show in

Tax: Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $2,191 a month for self-employment tax plus federal income tax at the 12% bracket (25%, before state tax). Outside the US, your own country's rules apply.

Assumes paid hours only; unpaid assessments, onboarding and gaps between projects lower the real figure. Full take-home calculator · Track what you actually earn

Open cybersecurity roles on each platform

The same kind of work, priced on every platform we track, with the best-paid open role on each.

Platform	Open	Median	Best-paid open role
Mercor	4	$99/hr4 priced	Cybersecurity Research Expert – Offensive Security & Vulnerability Research$200-250/hr
OpenTrain AIthis role	15	$93/hr	Security Red Teaming Intelligence Expert AI Trainer$200/hr
micro1	5	$70/hr	Cyber Threat Intelligence SME$70-110/hr
Alignerr	33	$50/hr	AI Penetration Tester$60-120/hr

All 58 open cybersecurity roles →

The full listing

As posted on OpenTrain AI. See the original

The work

The Fenrir Security Researcher title is paired with cybersecurity vulnerability research and task-creation duties; review the duties and qualifications below before applying.

Investigate private code repositories to find software vulnerabilities.
Use fuzzing to explore software behavior, then triage crashes and assess their security significance.
Read and reason about C, C++, Rust, and Go code.
Turn vulnerability findings into cybersecurity tasks designed to test AI models at different difficulty levels.

What it pays and takes

Pay: $100 per hour.
Time: At least 20 hours per week.
Language: Fluent English.
Open to candidates in the United Arab Emirates, Antigua and Barbuda, Albania, Armenia, Austria, Australia, Bosnia and Herzegovina, Belgium, Bulgaria, Bahrain, Benin, Brunei, the Bahamas, Bhutan, Botswana, Canada, Switzerland, Côte d’Ivoire, and Costa Rica.
Open to candidates in Cyprus, Czechia, Germany, Denmark, Algeria, Ecuador, Estonia, Spain, Ethiopia, Finland, France, the United Kingdom, the Gambia, Greece, Guatemala, Guyana, Hong Kong, Croatia, Hungary, Indonesia, Ireland, Israel, India, Iceland, Italy, Jamaica, Jordan, Kenya, Kuwait, Saint Lucia, Liechtenstein, Sri Lanka, Lithuania, Luxembourg, and Latvia.
Open to candidates in Morocco, Moldova, Madagascar, North Macedonia, Mongolia, Malta, Mauritius, Mexico, Malaysia, Mozambique, Namibia, the Netherlands, Norway, New Zealand, Oman, Panama, Peru, the Philippines, Pakistan, Poland, Portugal, Qatar, Romania, Serbia, Rwanda, Sweden, Singapore, Slovenia, Slovakia, Senegal, El Salvador, Thailand, Tunisia, Turkey, and Trinidad and Tobago.
Open to candidates in Taiwan, Tanzania, the United States, Uzbekistan, Vietnam, and South Africa.
You need experience conducting security research or finding software vulnerabilities, practical skills in fuzzing and crash triage, and the ability to explain technical findings clearly.

How it works

Apply on OpenTrain with your resume, then complete the application on the hiring site.

About AI training work

AI training is the human work behind AI systems: people create and review examples that help models learn and test how well they perform. This role uses security research expertise to create challenging tasks for evaluating AI models. OpenTrain is a free platform where people find AI-training and data-labeling projects, build a profile, and apply.

From applying to your first payment on OpenTrain AI

1
Create a profile
Create a free OpenTrain profile with your domains, languages and hourly rate.
2
Apply
Apply to the listing. Some listings hire through OpenTrain; others send you to the hiring platform.
3
Funded milestones
The client funds each milestone before work starts.
4
First payment
OpenTrain pays out to your connected payout method when the client approves the milestone. It doesn't publish a fixed payout schedule.

Sources: OpenTrain: AI training careers, OpenTrain docs: invoicing and payouts

Full OpenTrain AI profile: watch-outs and the public record →

Pay history

OpenTrain AI has listed this role at $100/hr since Nov 6, 2026 with no change.

What workers report about OpenTrain AI

Anonymous reports from people who applied or worked there: whether they got work, what they were paid and how fast.

Other cybersecurity roles

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