---
title: 'Senior Performance / Growth Marketer at Theori'
canonical: 'https://feeny.ai/job/senior-performance-growth-marketer-theori-united-states-dy4968b9t16p'
type: 'job'
last_seen: '2026-10-15'
---

# Senior Performance / Growth Marketer at Theori

- **Company:** Theori
- **Location:** United States
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-10-05
- **Last confirmed live:** 2026-10-15
- **Apply:** https://jobs.ashbyhq.com/theori/e9121177-11c2-4be8-9e90-ff808e7b97ae

## Job description

Senior Performance / Growth Marketer

- Location: Remote (US/CAN),
- Type: Full-time
- Experience: 6+ years

Summary Theori is a global leader in offensive security, founded by the world's most elite hackers. With a decade of unparalleled technical expertise, we're revolutionizing the cybersecurity paradigm with Xint, our AI-native AppSec platform spanning Xint Web (autonomous web app penetration testing) and Xint Code (AI-powered code security). Xint has been featured in The Verge, is in production with customers like Samsung Electronics, and is being adopted by security teams who want hacker-grade testing without hiring an army of pentesters.

We're hiring a Senior Performance / Growth Marketer to own the execution of Xint's paid campaigns, the HubSpot system behind them, and the Xint website. You'll build, launch and optimize campaigns across paid channels, own the website they drive traffic to, and connect every click to pipeline in HubSpot.

This is a hands-on role. You won't hand briefs to an agency, you'll be in the ad accounts and the CRM every day. You'll work closely with product marketing, sales and leadership to turn Xint's positioning into campaigns that reach security buyers and convert them into qualified meetings.

## Key Responsibilities

- Own paid campaign execution end to end across LinkedIn Ads, Google Ads search and display, and retargeting: audiences, targeting, budgets, bidding, creative trafficking, UTMs and conversion tracking.
- Test new paid channels, including Reddit, G2, and security-focused publishers and newsletters, and scale what returns.
- Run structured A/B tests on audiences, offers, copy and landing pages, document the results, and retire what does not work.
- Own HubSpot Marketing Hub as Xint's analyst and power user: lead capture, forms, landing pages, lists, segments and nurture workflows.
- Own lead scoring, lifecycle stages, lead routing and the MQL-to-SQL handoff with Sales, and keep CRM data clean through properties, deduplication, enrichment and governance.
- Own the Xint website: page updates, new pages, navigation, the demo request path, and fast on-brand landing pages for campaigns, launches and events.
- Run conversion rate optimization against demo requests, and own technical and on-page SEO, site speed, GA4 and Google Tag Manager.
- Build HubSpot dashboards and attribution reporting that tie spend to pipeline and revenue, and report monthly with a clear call on what to scale, fix or cut.

## Requirements

- 6+ years in performance, growth, or demand gen marketing, with at least 4 in B2B SaaS.
- Direct, hands-on management of paid budgets, including LinkedIn Ads and Google Ads, with results you can walk us through.
- Expert-level HubSpot: you've built workflows and lead scoring from scratch and set up attribution reporting.
- Hands-on Webflow expertise, including CMS collections, components and publishing workflow, with a record of owning a B2B company website.
- Working knowledge of SEO, GA4 and Google Tag Manager, plus conversion tracking, UTMs, pixels and ad platform integrations.
- Comfort with data: you build your own reports, read a funnel, and make budget calls from the numbers.
- A testing mindset, with a record of experiments that moved conversion rate, cost per opportunity or pipeline.
- Experience marketing to technical or senior buyers, where long cycles and buying committees are the norm, and clear written communication across marketing, sales and leadership.

## Nice to Have

- Experience marketing cybersecurity, DevSecOps or developer-adjacent products to CISOs and security teams.

## What We Offer

## Compensation & Benefits

- Competitive salary + equity
- Health, dental, and vision insurance
- Generous PTO policy
- Remote work
- Laptop + home office stipend
- 401(k) match

Why Join Theori?

- Cutting-edge product: AI-driven security tools that protect real systems
- Smart team: Collaborate with world-class engineers and security researchers
- Growth stage: Join early and help define the culture of our North American team
- Real impact: Shape how AI transforms cybersecurity

Hiring Process

- 30-min intro call with the Hiring Manager
- 45-min role and experience deep dive
- 30-min conversation with a Xint product or product marketing partner
- Final conversation with founders / executive leadership
- Offer

## About Theori

## Company Overview
- **One-liner**: Theori is an offensive cybersecurity company that uses AI-powered solutions and elite hacker expertise to secure AI systems, applications, and networks for global clients.
- **Entity Type**: Private (Seed stage)
- **Headquarters**: Austin, Texas, United States (US office); Seoul, South Korea (Korea office)
- **Founded**: 2016
- **Founders**: Not publicly listed (company built by elite hackers with multiple DEF CON wins)

## Core Business
- **Primary industry/industries**: Cybersecurity (offensive security, AI security, application security, blockchain security, security training)
- **Target customers**: Enterprises (B2B) – including Microsoft, Google, Okta, POSCO DX; also government and defense organizations
- **Mission or purpose statement**: “Raising the standard of security at every turn” – Theori tackles the most difficult cybersecurity challenges from an attacker’s perspective and trains the next generation of security leaders.

## Products & Services
- **Xint**: AI-powered application security testing (AST) solution that identifies vulnerabilities with human-level expertise, speed, and cost efficiency. Includes Xint Code for real-time code scanning.
- **αprism**: LLM security monitoring and guard model that continuously monitors prompts and model responses to protect AI interactions.
- **Dreamhack / Dreamhack Enterprise**: Cybersecurity training platform offering interactive, self-paced learning and customizable curricula for enterprises. Includes a paid subscription service and in-house competition management.
- **PatchDay**: Bug bounty platform launched in 2024.
- **ChainLight / ChainLight DART**: Blockchain security audit and risk management services.
- **Fermium-252**: Threat intelligence database.
- **AI Red Teaming**: Expert-led audits covering all angles of AI systems to identify vulnerabilities before exploitation.
- **Relic Protocol**: Chain data attestation protocol (launched 2018).
- **Upside Academy**: Cyber training program (now in its 3rd edition).

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Total Funding – **$15.5 million** (seed round led by K2G Fund, reported in 2025); prior investment from NAVER (2020).
- **Notable Investors/Partners**: K2G Fund (lead), NAVER, POSCO DX (strategic partnership), Okta (strategic cybersecurity partnership).
- **Growth Signals**:
  - Won #1 in DARPA AI Cyber Challenge (AIxCC) Semifinals (2024)
  - 9 DEF CON competition wins
  - Over 50 international hacking competition wins
  - Beta launch of αprism in April 2025
  - Launch of PatchDay bug bounty platform (August 2024)
  - Partnership with POSCO DX for AI-driven security framework (May 2025)
  - Received Presidential Commendation from the President of South Korea (2022)
  - Opened US office in Austin, TX

## Competitive Advantages
- **Elite Hacker Team**: Built by top offensive security experts with proven track records in global hacking competitions (DEF CON, AIxCC).
- **AI-Native Security**: Products like Xint and αprism are purpose-built for the AI era, monitoring and securing LLMs and codebases proactively.
- **Offensive Security Approach**: Tests systems from an attacker’s perspective, identifying vulnerabilities before malicious actors can exploit them.
- **Trusted by Industry Leaders**: Microsoft, Google, and Okta rely on Theori’s research and solutions.
- **Dual Headquarters (US + Korea)**: Allows access to both American and Asian markets and talent pools.

## Strategic Focus
- **AI Security Leadership**: Expanding AI-powered security solutions (Xint, αprism) and AI red teaming services to address emerging threats.
- **Training the Next Generation**: Growing Dreamhack enterprise offerings and Upside Academy programs to build a skilled cybersecurity workforce.
- **Continuous Innovation**: Annual independent research period for employees and ongoing product launches (PatchDay, ChainLight, Fermium-252).
- **Global Expansion**: Building US presence from Austin office while maintaining strong Korea operations.

## Why Work Here
- **Culture Highlights**: “Built by elite hackers” – the company emphasizes hands-on hacking, continuous learning, and ethical transparency. Annual independent research period and support for CTF competitions.
- **Remote/Hybrid/Office Policy**: Hybrid workspace with two offices (Austin, TX and Seoul, Korea). Remote positions available (e.g., AppSec Engineer, Backend Software Engineer).
- **Notable Perks**:
  - Unlimited leave system
  - 1-month sabbatical leave for every 3.5 years
  - Learning stipend and education/personal development stipend
  - Technology stipend
  - Meal allowance, free snacks and drinks
  - Monthly Culture Day
  - Seasonal corporate gifts
  - Annual health screenings (Korea)
  - Support for workplace social clubs
  - Mentoring program for new recruits
  - Military service exemption business (Korea)

## Sources
1. [theori.io](https://theori.io/)
2. [theori.io/about](https://theori.io/about)
3. [theori.io/career/culture](https://theori.io/career/culture)
4. [jobs.ashbyhq.com/theori](https://jobs.ashbyhq.com/theori)
5. [builtin.com](https://builtin.com/company/theori-inc)

## Other roles at Theori

- [Senior Recruiter](https://feeny.ai/job/senior-recruiter-theori-austin-6jbq5f17fa8a) — Austin, TX
- [Senior, Developer Relations and Technical Marketer](https://feeny.ai/job/senior-developer-relations-and-technical-marketer-theori-united-states-kezmr226rrn2) — United States
- [AppSec Engineer](https://feeny.ai/job/appsec-engineer-theori-united-states-qw04q9qs65t6) — United States
- [Backend Software Engineer](https://feeny.ai/job/backend-software-engineer-theori-united-states-g0n0j5rwvavp) — United States