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Senior Website Developer

Halcyon

$145,000 - $175,000
Oct 28, 2025
San Diego, CA, US
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Halcyon is seeking a Senior Website Developer to lead the evolution of its corporate website and the Ransomware Research Center, integrating live data streams, visualizing threat intelligence, and developing automations.

Requirements

  • Expert-level proficiency in Webflow CMS, including complex CMS structures, dynamic collections, and component systems
  • Strong front-end development skills in HTML, CSS, and JavaScript, with comfort extending Webflow through scripting and light coding
  • Experience integrating APIs and connecting Webflow to data sources, such as PostgreSQL or JSON endpoints
  • Familiarity with Webflow Cloud, Optimize, and Localize a strong plus
  • Experience with n8n, GA4, GTM, and marketing automation platforms including Marketo, 6sense, and similar
  • Knowledge of accessibility, security, and performance optimization best practices

Responsibilities

  • Own and evolve Halcyon's Webflow CMS, ensuring world-class speed, performance, and accessibility
  • Build responsive, dynamic pages and components using Webflow CMS, custom scripts, and integrations
  • Lead the adoption of Webflow Cloud, Webflow Optimize, and Webflow Localize to enhance interactivity and personalization
  • Integrate external APIs and data feeds into dynamic site experiences that reflect live intelligence and research
  • Collaborate on in-house tools that pull from PostgreSQL databases and internal research data sets
  • Build and maintain automations using n8n and other workflow tools to connect data pipelines, analytics, and marketing systems
  • Partner with Marketing Operations to ensure smooth connections with GA4, GTM, Marketo, 6sense, and similar tools.

Other

  • 6+ years of experience developing and managing high-traffic marketing or product websites
  • Partner with the design team to bring visually sophisticated, data-rich experiences to life
  • Excellent communication, attention to detail, and collaboration skills across design, content, and technical teams
  • A passion for innovation and a desire to push Web experiences beyond traditional marketing sites