Senior Technical Content Writer

About RunSybil

Founded in 2023 by Ari Herbert-Voss and Vlad Ionescu, RunSybil is on a mission to automate hacker intuition. We’re building Sybil: an AI-driven pentester that discovers vulnerabilities before they’re exploited. As adversaries adopt AI to increase their attack surface, we’re putting cutting-edge offensive security into the hands of defenders. Backed by strong investor support and early customer traction, our team is composed of experts from OpenAI, Meta, Mandiant, Palantir, Cruise, Trail of Bits, and Aptiv.

The Role

RunSybil is looking for our first technical content writer to help us build our content engine. You'll own content writing and the calendar that keeps them moving. This is a writing-first role, but we want someone who thinks like a content marketer: able to see how a blog becomes a LinkedIn thread, how a case study becomes a talk abstract, how a whitepaper becomes five posts. You will be thinking about the big picture and how our content will scale as RunSybil grows. This role will live on the marketing team.

What You'll Write

• Blog posts written from SEO/GEO briefs provided by our agency

• Assist researchers and engineers on writing technical research

• Co-own social posts, primarily LinkedIn with occasional X

• Co-own content calendar: planning, scheduling, and tracking what's in flight

• Case studies, white papers, technical documentation, web copy

• Email: newsletter and product announcements

• Video and multimedia: scripts, briefs, and written support for video content

• Editing and QA: reviewing and elevating content from external contributors when needed

What We're Looking For

• Process minded: You won’t be writing one off pieces but thinking about the big picture and how our content will scale as RunSybil grows.

• 5–7 years of content or technical writing experience, with at least 3 in cybersecurity or adjacent technical fields

• Background in application security, penetration testing, or offensive security. You don't need to be a practitioner, but you need to understand the space well enough to write for it without hand-holding

• Proven experience writing for technical audiences: security engineers, heads of security, CISOs

• Content marketing instincts: you can write a blog and know how to extend it to social, soundbites, repurposed formats without being asked

• Comfortable across formats: long-form, short-form, email, video scripts, and everything in between

• Clear, concise writing. Technical without being verbose

• Ability to follow and internalize a writing style guide and push back when something doesn't fit

• Strategic AI use: fine as a copy-editing aid; AI-generated or AI-smelling content is not what we’re after

• Organized and deadline-driven: we work on a content calendar and need reliable turnaround

• Creative and collaborative: we're building a brand, and we want a writer who brings ideas, not just output

• Comfortable asking questions when briefs need clarification