Senior Web Developer

Get to Know Us

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

As a remote first company, we require minimum 25Mbps consumer grade broadband connection.

What You’ll Do

We’re looking for a Web Developer to play a pivotal role in the design, development, and evolution of our marketing web platforms. This is more than just a coding role, you’ll lead initiatives with strategic importance, manage cross-functional collaboration, and serve as a key voice in technical architecture, scalability, technical SEO strategy, and user experience. You are someone with deep expertise in modern web development, a strong understanding of business context, and a passion for mentoring others and shaping a healthy, innovative team culture.

Initially, you’ll help build and manage WordPress sites, primarily leveraging Bricks Builder, but the larger opportunity is to architect and develop standalone web applications as our needs evolve. This role is perfect for a developer who cares about clean architecture, and wants to influence not just the project builds, but also our future tech stack.

This is a remote-first position, open to applicants globally. We value asynchronous communication, proactive ownership, and collaborative problem-solving across borders and time zones.

This role will be responsible for…..

• Leading complex, high-impact web projects end-to-end, from scoping through deployment, balancing speed, quality, and risk with minimal oversight.
  

• Serve as a domain expert in modern web architecture, component libraries, frameworks, SEO best practices, and CMS systems, actively influencing technical direction.
  

• Collaborate cross-functionally with stakeholders in design, content, marketing, and product to deliver web experiences that drive business outcomes and align with search engine visibility goals.
  

• Implement and optimize technical SEO elements, including structured data, canonical tags, meta tags, sitemaps, robots.txt, and crawlability enhancements.
  

• Architect and maintain performant, accessible, and responsive front-end systems (primarily Bricks) to integrate with dynamic backend systems, with a focus on Core Web Vitals and page speed.
  

• Plan and prototype APIs and backend architectures for future standalone web applications.
  

• Communicate effectively across the organization, delivering timely, concise updates and feedback to teammates and stakeholders alike.
  

• Promote and model a culture of accountability, collaboration, and continuous learning, actively mentoring more junior team members.
  

• Recognize cultural misalignment in work or behaviors and guide teams in resolving it constructively.

What You’ll Bring

• 5 - 7+ years of professional experience building and deploying modern web applications.
  

• Advanced expertise in PHP, JavaScript, HTML5, CSS/SASS, and component-based architecture.
  

• Experience with Alpine.js, or similar front-end frameworks; experience with static site generation (SSG) and server-side rendering (SSR).
  

• Deep understanding of web performance optimization, accessibility (WCAG), and technical SEO fundamentals—including structured data, rendering behavior, indexation, and on-site optimization.
  

• Proven experience with managing web properties for SEO performance and collaborating closely wit