About c/side:
c/side is laser focussed on solving web security, starting with browser side injections. Covering previously unmonitored attack surfaces in developer and user friendly ways.
The team of c/side are a diverse mix of highly capable subject matter experts. We’re kind but we mean business.
Since January 2024, c/side has raised $ 7.7 million in pre-seed funding from Uncork Capital, Mantis Ventures, Scribble Ventures, Roar VC, Dan Scheinman, Jason Warner, Kathy Korevec and many more. A team of handpicked, high value add investors invested in helping our company and team grow. In Q1 we found nearly 300.000 websites with client-side attacks. We find high profile attacks regularly.
About the role:
We are looking for a Senior Performance/Growth Marketeer to help spread the message of c/side and fuel our top of funnel.
What you will do:
Draft, implement and improve top of funnel strategies. Get leads flowing!
Build, optimize, and scale multi-channel marketing campaigns across LinkedIn, Google, TikTok, Reddit, newsletters, and emerging platforms
Own reporting: develop dashboards, run A/B tests, and translate metrics into actionable insights
Own the tech stack for GTM automation, creating systems that reduce inefficiencies and improve outcomes
Design, run, and analyze iterative growth experiments across the entire funnel: acquisition, activation, retention, and expansion
Automate lead scoring, account prioritization, and personalized outreach to maximize conversion rates
Instrument and maintain our analytics stack (GA4, PostHog, HubSpot, etc.) to provide a single source of truth on performance
Partner with GTM & Product to launch self-serve onboarding flows and product-led virality loops
Build automated lifecycle campaigns (email, in-app, webhook) that convert free customers to paying, retained customers
Craft technical, value‑first narratives that resonate with security engineers & compliance leads.
Report weekly insights and learnings
Evaluate and unlock new channels to achieve step-change growth
About you:
3+ years driving growth for B2B SaaS (security or developer tooling preferred) with a clear track record of pipeline and revenue impact
Experience with tools like Clay, HubSpot, Email delivery, etc..
Ability to evaluate and adopt new tools to maintain a competitive edge
Analytical to the core and comfortable building dashboards and explaining the "why" behind the numbers
Autonomous: You'll own your domain and define how we grow
Experimentation mindset; you default to hypothesis → test → iterate and openly share wins and failures
Hands-on with the modern growth stack
Able to translate complex security concepts into crisp, compelling value propositions for technical buyers
Thrive in zero-to-one environments; biased toward action, embrace ambiguity, and ship fast without cutting corners
Exceptional written and verbal communication skills; you write tight copy and influence cross-functional stakeholders
Genuine passion for web security and belief in c/side's mission to protect developers and users
Fully remote capable with at least 4 hours overlap with UK timezone; excited to travel for 2-3 company offsites per year and if interested in person conferences
At c/side:
We’re constantly learning and developing better, we grow together
We do not ship half projects, we do not sell snake oil, we don’t cut corners - out of respect for our team, our customers and our community. We put a dent in the universe by building good products
Transparency and integrity above all
C/side offers:
2-3 Offsites per year (this changes from time to time)
Generous work from home allowance
Latest Macbook
Stock options
Market rate salary
Take what you need PTO
Fully remote, 4h overlap with UK working hours required
Our team is invested in your long term career development. If you want to talk at events, we’ll make that happen, if you want to learn how to build your own startup one day, we’ll offer you a front line seat. C/side is built by folks like you.
We’re building a world class security company, and we simply want the best people for the job. We do not select or discriminate based on formal educational background, age, skin tone, religion, national origin, sexual orientation, gender identity, disability status, marital status, veteran status… we’re welcoming all and celebrate equal opportunities.