Senior Web Developer

Get to Know Us

Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and 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 ITOps/SecOps teams, consulting pentesters, and MSSPs and MSPs.


We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, 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.

What You'll Do

We are seeking a Web Developer to build, maintain, and continuously improve the Horizon3 marketing website. Following a full relaunch, our site is the primary digital surface where buyers meet our platform, and it needs a dedicated builder who treats it as a living conversion asset rather than a static brochure. You will own hands-on front-end development, page building, performance, and the technical execution behind our conversion and campaign roadmap. This is a high-ownership, execution-focused role for someone who wants to ship, measure, and iterate quickly on a site that directly influences enterprise pipeline.

You will partner closely with digital marketing, brand and design, and product marketing to turn designs and campaign requirements into fast, accessible, high-converting pages. This is an individual contributor role focused on building and maintaining the marketing web presence. Backend systems of record, Salesforce, and core marketing automation infrastructure are owned by our Marketing Operations function, allowing you to focus on the website itself.

• Build and Maintain the Marketing Site: Develop and maintain WordPress pages, templates, custom post types, custom fields, and reusable components on the Horizon3 marketing website in WordPress, translating designs and briefs into clean, responsive, production-ready pages.
• Own Front-End Development: Write and maintain well-structured HTML, CSS, and JavaScript. Build reusable templates, blocks, and components that keep the site consistent and easy to extend.
• Convert Designs to Code: Partner with brand and design to accurately implement Figma designs, preserving visual fidelity, spacing, and interaction detail across breakpoints.
• Optimize Performance: Own site speed, Core Web Vitals, and mobile responsiveness as hard requirements. Diagnose and fix render, load, and layout issues so pages are fast on every device.
• Enable Conversion and Testing: Build landing pages, forms, and interactive elements that support demo requests and campaign conversion. Implement A/B tests and CRO changes in partnership with digital marketing.
• Implement Tracking and Tags: Set up and maintain analytics, conversion tracking, event tags, and UTM handling (e.g., Google Tag Manager) so digital performance is accurately measured.
• Support SEO and AEO Execution: Partner with digital marketing to implement technical and on-page SEO improvements, including semantic markup, structured data, metadata, image alt text, internal linking, redirects, broken-link remediation, sitemaps, indexability, and site architecture. Help resolve technical issues identified through ongoing SEO audits and monitoring.
• Support Web Integrations: Implement and troubleshoot website integrations with marketing and business platforms, including embedded forms, event platforms, recruiting tools, consent management, analytics, and other third-party scripts or services.
• Uphold Privacy and Compliance: Implement and maintain cookie consent, tracking governance, and accessibility standards (WCAG) so the site stays compliant with privacy regulations and usable for all visitors.
• Manage Staging and Releases: Use disciplined staging, version control, and conduct cross-browser, responsive, accessibility, tracking, and regression QA before and after releases. so changes ship to production cleanly, without breaking existing pages or performance.
• Maintain Site Health: Own plugin updates, security patches, uptime, broken-link and redirect management, routine technical audits, and ongoing technical upkeep of the site.
• Partner Across Marketing: Work closely with digital, brand, design, and product marketing to scope, prioritize, and deliver web work that supports campaigns, launches, and field motions on deadline.

What You'll Bring

• 4+ years of hands-on web development experience, ideally building and maintaining B2B marketing or corporate websites.
• Strong proficiency in HTML, CSS, and JavaScript, with the ability to build responsive, cross-browser, mobile-first pages from scratch.
• Deep hands-on WordPress experience, including theme and template development, custom blocks, and working within a page builder environment.
• Proven track record optimizing site performance, Core Web Vitals, and page speed.
• Experience implementing analytics and conversion tracking, including Google Tag Manager, Google Analytics, and event and UTM tracking.
• Working knowledge of technical SEO fundamentals such as semantic markup, structured data, and site architecture.
• Comfort translating Figma designs into high-fidelity, production-ready pages.
• Disciplined approach to staging, version control (Git), QA, and clean deployment to production.
• Strong collaboration skills and the ability to manage multiple web requests against marketing deadlines.

What Sets You Apart?

• A background in cybersecurity, developer tools, or highly technical enterprise B2B SaaS.
• Experience building and running A/B tests or CRO programs on marketing sites.
• Experience working with WordPress ecosystems, including page builders, custom post types/fields, plugins, reusable components, and integrations with third-party marketing platforms.
• Experience implementing accessibility (WCAG) and privacy compliance (GDPR, CCPA) on public web properties.
• Basic design sensibility and comfort making small visual and UX judgment calls when a design leaves gaps.

Travel Required

We are a fully remote company. Occasional company-sponsored travel may be required for team meetings, events, or other business needs, up to 10%, to be successful.

Perks of Horizon3

• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.
• Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.
• Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.
• Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence.
• Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

Compensation and Values

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations.

In accordance with various State's transparency regulations, we provide the following salary range information for this position:

• Base salary range: $160,795 - $189,000 annually. The exact salary will be determined based on the selected candidate's location, qualifications, experience, and relevant skills.
• Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

You Belong Here

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, hair length or any other legally protected status by law.

Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth.

We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.


Application Note

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