[Hiring] Senior Fullstack Marketer @Cside

Role Description

We’re looking to expand our GTM team with a forward thinking full-stack marketer. Owning top of funnel, SEO, GEO, product releases, content and taking initiative on new marketing channels.

• 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. SEO, SERP, LLM discoverability, Ads...
• 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, SEMrush, 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, Pylon) 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.

Qualifications

• 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.
• Exceptional written and verbal communication skills; you write tight copy and influence cross-functional stakeholders.
• Genuine passion for web security and belief in cside'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.

Requirements

• Experience achieving a lot with little. If you managed millions in ad-spend, that will not impress us here.
• Experimentation mindset; you default to hypothesis → test → iterate and openly share wins and failures.
• 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.

Benefits

• Quarterly offsite.
• Generous work from home allowance.
• Latest Macbook.
• Stock options.
• Market rate salary (seed stage).
• Take what you need PTO.