Full-Time
Sales Development Manager
Updated on 8/1/2026
Horizon3.ai
201-500 employees
Autonomous pentesting SaaS for vulnerabilities
Compensation Overview
$170k - $180k/yr
Chicago, IL, USA
Hybrid
One day per week remote flexibility; relocation assistance to Chicago is available.
 Sales & Account Management (1) |
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- At least 2 years of Sales Development Representative management experience in a high-growth Software as a Service or cybersecurity environment, including scaling and coaching high-performing teams.
- Experience in cybersecurity, Software as a Service, or other technical business-to-business environments.
- Strong analytical skills with the ability to turn data into action.
- Knowledge and practical application of modern sales methodologies, including MEDDIC, Challenger, and SPIN.
- Hands-on experience with Salesforce and sales engagement platforms such as Outreach, Salesloft, and Apollo.
- Experience leveraging artificial intelligence to drive productivity, insights, and coaching.
- Ability to manage multiple priorities in a fast-paced environment.
- Must be located in the Chicago area.
- Build, motivate, and manage a high-performing Sales Development Representative team to consistently generate high-quality sales pipeline from target accounts.
- Coach Sales Development Representatives on cold calling, objection handling, qualification, and multi-channel outreach to develop them into top sellers.
- Partner with Revenue Operations, Enablement, and other cross-functional teams to improve tools, processes, and playbooks for efficiency, consistency, and scalability.
- Cultivate team culture by celebrating success, learning from mistakes, ensuring psychological safety, and using healthy competition and games to maintain energy and performance.
- Own the Sales Development Representative sales funnel end-to-end, analyze data to forecast pipeline, refine strategies, and ensure accountability to targets and service-level agreements.
- Recruit, onboard, and ramp new Sales Development Representatives with clear expectations and structured training to ensure rapid productivity.
- Champion ownership, continuous improvement, and process discipline, including customer relationship management hygiene and service-level agreements, while refining tools and playbooks.
- Translate daily Sales Development Representative conversations into actionable insights about objections, use cases, and competitive intelligence that inform go-to-market strategy, campaigns, and sales plays.
Horizon3.ai specializes in cybersecurity by offering NodeZero, a SaaS platform for autonomous penetration testing. It lets enterprises simulate cyber-attacks on their own systems in a self-service way, without installing persistent agents, and without ongoing human intervention. The platform works by running security-focused attack simulations in production environments to uncover exploitable vulnerabilities and weak controls, delivering vulnerability assessments, threat simulations, and compliance-oriented testing through tiered subscription plans. This approach differentiates Horizon3.ai from traditional pentesting by being self-service, agentless, and safe to run in live environments, while targeting enterprise customers that must meet standards such as PCI DSS. The company aims to help organizations improve their security posture, prioritize remediation, and maintain regulatory compliance by continuously identifying and fixing weaknesses.
Company Size
201-500
Company Stage
Series D
Total Funding
$187M
Headquarters
San Francisco, California
Founded
2019
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Simplify's Take
What believers are saying
- Demand is rising for continuous verification, not one-time pentest reports.
- FedRAMP High authorization strengthens federal adoption of NodeZero Federal.
- More than 5,500 organizations already use NodeZero, including NSA and CISA.
What critics are saying
- Crowded security vendors can bundle similar workflows into broader platforms.
- A production-disruption incident would directly damage NodeZero's core safety claim.
- Autonomous pentesting can be treated as tactical spend, limiting recurring expansion.
What makes Horizon3.ai unique
- NodeZero runs autonomous pentests safely in production without persistent agents.
- It continuously finds, fixes, and verifies exploitable attack paths.
- Horizon3.ai covers internal, external, cloud, Kubernetes, and identity surfaces.
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Benefits
Health Insurance
Vision Insurance
Dental Insurance
Unlimited Paid Time Off
Remote Work Options
Stock Options
Growth & Insights and Company News
6 month growth
↓ -2%1 year growth
↑ 0%2 year growth
↓ -3%World Wide Technology and Horizon3 launch strategic partnership to rewrite the cybersecurity playbook for the AI era. July 27, 2026 New Mythos Infrastructure Readiness Assessment operationalizes AI-native security validation to protect enterprises against machine-speed threats. ST. LOUIS (July 27, 2026) - World Wide Technology (WWT), a global technology solutions provider, and Horizon3, the AI-native proactive security leader behind the NodeZero(R) Platform, today announced a strategic partnership to help enterprises build continuous, evidence-based cyber resilience at a moment when AI is fundamentally changing the speed, scale, and sophistication of attacks. As the first step in the partnership, WWT and Horizon3 launched a Mythos Infrastructure Readiness Assessment joint solution, which helps organizations actively test and validate if they can withstand sophisticated, AI-accelerated attacks with their current infrastructure. The urgency is real. Artificial intelligence has collapsed the timeline between vulnerability and exploitation. Attackers now use AI to discover weaknesses, generate novel exploits, and move laterally through enterprise environments at machine speed. Yet most organizations still measure their security posture through slow, inconsistent periodic assessments and compliance exercises, leaving them exposed to today's fast-moving AI threats. This disconnect is spotlighted in Horizon3's State of Assumed Security 2026 report, which reveals that only 30% of organizations actively test for real-world exploitability after applying a patch. Instead, nearly half default to simple vulnerability rescanning, a process that completely fails to prove whether an underlying attack path was actually neutralized. The result is a dangerous gap between assumed security and actual resilience. What's required is a fundamental shift from periodic, compliance-driven assessments to continuous, autonomous security operations. Why WWT chose Horizon3. As WWT advised the world's largest enterprises, it saw a consistent, concerning pattern: organizations investing heavily in security controls they had never pressure-tested under real attack conditions. By combining Horizon3's autonomous security validation platform with WWT's consulting, architecture, integration, and managed services capabilities, the partnership gives enterprises a repeatable operational model for proving cyber resilience, not just assuming it. To accomplish this, the autonomous platform leverages actual exploitable attack paths, discovered and verified at machine speed across cloud, hybrid, identity, and on-premises environments, rather than simulated risk scores. WWT's choice to partner with Horizon3 reflects its standing as a category's defining company. Horizon3 was recently recognized by Fast Company as one of the World's Most Innovative Companies in 2026, ranked #3 overall on the 2025 Deloitte Technology Fast 500, and named the #1 cybersecurity company on the Inc. 5000 in 2025. More than 5,500 organizations, including the NSA, CISA, Fortune 100 enterprises, and major healthcare systems, rely on NodeZero to validate their defenses and prioritize what actually matters. "Every major technology shift redefines infrastructure and resilience, and the AI era demands a complete rewrite of the security playbook," said Jim Kavanaugh, Co-Founder and CEO, World Wide Technology. "As our customers face machine-speed, AI-driven threats, they can no longer rely on static defense strategies. Horizon3's autonomous validation capabilities perfectly complement WWT's consulting and architecture expertise. Together, scaled through our Advanced Technology Center (ATC) and global managed services, we are helping enterprises move from assumptions to definitive evidence, ensuring their operational defenses perform exactly as intended." Introducing the Mythos Infrastructure Readiness Assessment. The first joint solution delivered under this strategic partnership is the Mythos Infrastructure Readiness Assessment. This offering moves beyond traditional vulnerability scanning to actively prove whether an enterprise's infrastructure can withstand sophisticated, AI-accelerated attacks. Delivered through Horizon3.ai's NodeZero(R) platform, the assessment produces three things security leaders can immediately act on: * Validated map of exploitable attack paths across cloud, hybrid, identity, and enterprise environments * Analysis of which security controls are performing as intended and which are not * Prioritized remediation roadmap tied to actual business risk The output is an executive-ready briefing that gives CISOs the evidence they need to make better investment decisions, accelerate remediation, and demonstrate measurable progress to their boards about how ready their security infrastructure is to withstand AI-based attacks. "In the AI versus AI era, it's now even harder to decide what NOT to fix. Just because you're vulnerable doesn't mean you're exploitable, you could have a compensating control in place that disrupts the attack chain. Viewing yourself through the eyes of an attacker using comprehensive pentesting is the best way to ensure your teams are fixing problems that are truly exploitable, known to be used by threat actors, and that will lead to a business consequence. With that information you can clearly articulate to leadership what the risk is whether to adjust resources or accept that risk." said Snehal Antani, CEO, Horizon3. "By partnering with a global powerhouse like WWT we are giving defenders the upper hand by transforming how the world's largest organizations prioritize risk and operationalize cyber resilience at scale." The Mythos Assessment marks the foundation of a deeply strategic, multi-phased relationship. WWT and Horizon3 intend to continually expand their co-innovated offerings, embedding autonomous validation across the entire infrastructure lifecycle and helping enterprises safely navigate AI adoption. About World Wide Technology. World Wide Technology (WWT) is a global technology solutions provider helping organizations make a new world happen by turning ambition into real-world outcomes. Founded in 1990, WWT brings together strategy, deep technical expertise and world-class technology partnerships to help public- and private-sector organizations design, build and scale intelligent AI, digital, cybersecurity, cloud and infrastructure solutions. Through its Advanced Technology Center (ATC), a collaborative ecosystem featuring state-of-the-art hardware and software, WWT enables clients and partners to conceptualize, test and validate innovative technology and then deploy solutions at scale using its global integration and distribution capabilities. With more than 14,000 team members and over 60 locations worldwide, WWT's culture - grounded in core values and leadership philosophies - has been recognized by Fortune and Great Place to Work(R) for its commitment to innovation, trust and creating a great place to work for all. WWT provides products and services to large enterprise, global service provider and public sector clients in up to 130 countries across six continents. Softchoice, a World Wide Technology company, supports commercial and SMB markets in the U.S. and Canada. About Horizon3 Horizon3, the AI-Native Proactive Security Company behind NodeZero(R), shifts the advantage from attackers to defenders by giving organizations the power to fight AI with AI. NodeZero, the World's Best AI Hacker(TM), autonomously tests your defenses at machine speed, safely finds and prioritizes exploitable attack paths, instantly verifies fixes, and drives a continuous hack, fix, verify loop. More than 5,500 organizations including the NSA, CISA, Fortune 100 enterprises, and major healthcare providers trust Horizon3 to prioritize what matters and for security you can prove. Follow HORIZON3 on LinkedIn and X. Media Contacts How can NodeZero help you? Let its experts walk you through a demonstration of NodeZero (R), so you can see how to put it to work for your organization.
Finite State appoints Ann Miller to scale product security and software supply chain strategy. April 07, 2026 Finite State, a vendor of product security and software supply chain risk management, announced the appointment of Ann Miller as vice president of marketing. Miller brings more than 15 years of experience scaling high-growth technology companies, with deep expertise in cybersecurity and AI-driven platforms, and turning emerging technologies into market-defining categories. Miller joins Finite State at a pivotal moment as enterprises face increasing pressure to secure software embedded across critical infrastructure, connected devices, and regulated environments. Her appointment underscores the company's commitment to defining the future of product security through data, automation, and AI. "Ann has a proven track record of building category-defining marketing engines in cybersecurity," said Matt Wyckhouse, CEO of Finite State. "Her ability to translate complex, technical innovation into market leadership will be instrumental as we accelerate our growth and expand our position in product security." Prior to joining Finite State, Miller led marketing at Horizon3.ai, where she helped scale the company from early-stage to thousands of customers, driving rapid market adoption. During her tenure, Horizon3.ai was recognized as the #1 fastest-growing cybersecurity company on the 2025 Inc. 5000 list and established leadership in autonomous security testing. Earlier in her career, she held strategic roles at Cylance, a pioneer in AI-driven endpoint security, and iboss, a leader in cloud security. "Product security is quickly becoming one of the most critical and under-addressed challenges in cybersecurity," said Miller. "What impressed me about Finite State is what they've built. It's an AI-native platform that automates product security end to end, from deep binary analysis through prioritization and remediation across the software supply chain. That's incredibly hard to do, and has been a key driver in building trust across their customer base." Miller will lead all aspects of marketing, including branding, demand generation, product marketing, and go-to-market strategy. She is the latest expansion of the Finite State executive team, following the February 2026 appointment of Sharon Hagi as chief security officer, and January 2026 appointment of Chris Overton as executive vice president of engineering. Hagi brings more than 30 years of experience building and operating security programs across semiconductors, IoT, embedded systems, AI-enabled platforms, and cloud environments. Leading Finite State's Security and Services organization, Hagi ensures execution, customer outcomes, and operational excellence. Overton brings more than 20 years of engineering leadership experience. He drives Finite State's engineering innovation at a critical stage of the company's growth, as device manufacturers face increasing pressure to ship faster while meeting requirements such as the EU Cyber Resilience Act and other emerging security mandates. Last May, Finite State expanded its executive team with the appointments of Tim Quock as chief operating officer and Beth Linker as chief product officer. The additions come as the company accelerates its global efforts to secure connected systems across critical infrastructure. Quock has a background in guiding security companies through key growth stages, with experience supporting solutions used by Fortune 1000 organizations. Industrial Cyber News Desk
Horizon3.ai named to Fast Company's annual list of the World's Most Innovative Companies of 2026. * Business Wire * 5 hrs ago SAN FRANCISCO-(BUSINESS WIRE)-Mar 24, 2026- Horizon3.ai is proud to have been named to Fast Company 's prestigious list of the World's Most Innovative Companies of 2026. This year's list shines a spotlight on businesses that are shaping industry and culture through their innovations. Alongside the World's 50 Most Innovative Companies, Fast Company recognizes 720 honorees across 59 sectors and regions. "NodeZero(R) is the most experienced AI hacker in the world. It relentlessly seeks ways to compromise your network, break into your applications, steal your data, and lock you out of your systems using the same tactics the bad guys use," said Snehal Antani, CEO and Co-founder of Horizon3.ai. "It's no longer acceptable to wait for a breach to know your security worked. You need to proactively and continuously verify your secure posture." Horizon3.ai proved that organizations can safely execute real-world cyberattacks against their own production environments, something the industry long believed was too risky to do at scale. Traditional security models rely on identifying vulnerabilities or simulating threats, but they cannot determine what an attacker can actually exploit in a live environment. Through its NodeZero(R) Proactive Security Platform, Horizon3.ai enables continuous, real-world attack execution, removing that limitation and making it possible to measure risk based on what attackers can actually exploit. As a result, Horizon3.ai shifts security from assuming defenses will work to proving they do. Security teams can observe how attack paths unfold across identity, cloud, endpoint, and infrastructure systems and validate whether controls detect or stop them. With continuous execution, validation, and retesting, Horizon3.ai enables an operational model where risk is measured through real outcomes and verified over time. The World's Most Innovative Companies is Fast Company 's hallmark franchise and one of its most anticipated editorial efforts of the year. To determine honorees, Fast Company' s editors and writers review companies driving progress around the world and across industries, evaluating thousands of submissions through a competitive application process. The result is a globe-spanning guide to innovation today, from early-stage startups to some of the most valuable companies in the world. "Our list of the Most Innovative Companies is about spotlighting organizations that don't just adapt to change - they drive it," said Brendan Vaughan, editor-in-chief of Fast Company. "The companies we honor this year are redefining what leadership looks like in 2026, pairing bold ideas with measurable impact and turning breakthrough innovation into real-world value. They are setting the pace for their industries and offering a blueprint for what sustained innovation can achieve." The full list of Fast Company's Most Innovative Companies honorees can now be found at fastcompany.com. It will also be available on newsstands beginning March 31, 2026. Fast Company will host the Most Innovative Companies Summit and Gala for honorees on May 19 in New York City. The summit features a day of inspiring content, followed by a creative black-tie gala including networking, a seated dinner, and an honoree presentation. ABOUT HORIZON3.ai Horizon3.ai's NodeZero(R) AI-Native Proactive Security Platform is trusted by four of the Fortune 10, the world's largest banks, leading global pharmaceutical and semiconductor manufacturers, critical infrastructure operators worldwide, and the U.S. Defense Industrial Base. It enables organizations to proactively hack, fix, verify, and repeat testing on demand, continuously strengthening defenses and improving cyber resilience over time. Recognized as the fastest-growing cybersecurity company in America (Inc 5000 and Deloitte Fast 500), Horizon3.ai was founded by former U.S. Special Operations members and industry experts, and is headquartered in San Francisco. Follow HORIZON3.ai on LinkedIn and X. ABOUT FAST COMPANY Fast Company is the only media brand fully dedicated to the vital intersection of business, innovation, and design, engaging the most influential leaders, companies, and thinkers on the future of business. Headquartered in New York City, Fast Company is published by Mansueto Ventures LLC, along with fellow business publication Inc. For more information, please visit fastcompany.com. Stephen Gates KEYWORD: CALIFORNIA UNITED STATES NORTH AMERICA INDUSTRY KEYWORD: DATA MANAGEMENT SECURITY TECHNOLOGY SOFTWARE NETWORKS ARTIFICIAL INTELLIGENCE PUB: 03/24/2026 09:00 AM/DISC: 03/24/2026 09:00 AM
Horizon3.ai, an AI-native proactive security company, has announced 102% year-over-year annual recurring revenue growth for FY2026. The company's NodeZero platform, which it describes as "the world's most experienced AI hacker", is now used by over 5,200 organisations globally, including Fortune 10 enterprises. The company reported 125% net dollar retention and 94% gross dollar retention. Approximately 70% of customers are serviced through managed security service providers, representing one of its fastest-growing segments. Channel partners originated 32% of Q4 bookings. NodeZero has autonomously executed more than 225,000 production-safe penetration tests across enterprise environments. The platform identifies exploitable attack paths across web applications, Active Directory, cloud environments and identity systems, helping organisations address vulnerabilities before adversaries can exploit them.
Horizon3.ai appoints Dan Bird MBE as Field Chief Technology Officer for EMEA. * home * presse * Horizon3.ai appoints Dan Bird MBE as Field Chief Technology Officer for EMEA. | As UK cyber threats intensify and regulation tightens, Horizon3.ai brings in Dan Bird MBE, formerly of the UK Ministry of Defence, as Field Chief Technology Officer for EMEA Bird brings senior defence and national security experience and will work closely with UK organisations on cyber resilience as attacks become more frequent, automated and disruptive. His appointment comes as the Cyber Security and Resilience Bill advances through Parliament, reflecting a growing recognition that cyber attacks are an operational risk, not an abstract one. Horizon3.ai has been vocal in warning that too many organisations rely on outdated defensive security methods only. Bird stated: "Controls have to be validated under real conditions, not assumed to work on paper." Dan Bird is available for: - Interviews and op-eds on cyber resilience and offensive security - Insight into today's threat landscape, from technical to geopolitical risk - Commentary on how regulation and AI threats are reshaping cyber defence | | Horizon3.ai appoints Dan Bird MBE as Field Chief Technology Officer for EMEA London, 18 February 2026 - Horizon3.ai, a leader in offensive security, has appointed Dan Bird MBE as Field Chief Technology Officer (EMEA). In this role, Bird will work closely with customers and partners to advance Horizon3.ai's mission to help organisations continuously validate their security posture in the face of sharply escalating cyber threats, especially focused on NatSec and CNI. Escalating Cyber Threats Drive Focus on Resilience The appointment comes amid a sharp escalation in the scale, frequency and sophistication of cyberattacks directed at the UK and wider EMEA region. Recent incidents and threat intelligence indicate that attacks are becoming more automated, involve more AI capabilities, are more persistent and more disruptive, placing increased pressure on organisational resilience. Extensive Defence and National Security Experience Dan Bird MBE brings close to three decades of experience across defence, national security and technology delivery. He spent the majority of his career with the UK Ministry of Defence, holding senior operational, technical and leadership roles in the UK's national crisis response. During this time, he led complex technology programmes valued at several hundred million pounds, transitioned large-scale IT systems into live operational service, and supported defence innovation and international cooperation, including as National Liaison Officer to the United States military. He later moved into the private sector, most recently at SNC Mission Systems UK. Advancing an Offensive Approach to Cyber Defence In his new role at Horizon3.ai, Bird will support organisations across EMEA in strengthening cyber resilience by validating security controls from an attacker's perspective. This approach reflects the reality that modern attacks are repeatable, scalable, and persistent, and that assumptions about defence often fail under pressure. "Dan brings a rare blend of deep defence experience, technical credibility, and operational insight," said Keith Poyser, Vice President EMEA at Horizon3.ai. "Threat actors, including organised criminal groups and state-backed operators, are becoming more capable and more persistent, while many organisations still place too much trust in untested defensive controls. Resilience comes from proving defences hold up when tested, frequently, from an exploitability perspective. Dan's leadership will be instrumental in helping organisations move from assumed security to demonstrable resilience." Cyber Defence Returns to the National Agenda Bird said his decision to join Horizon3.ai was driven by the convergence of technology, geopolitics, and cyber risk. "We're seeing offensive cyber capability become easier to operate and harder to contain, at the same time as geopolitical pressure and more organised criminal activity," said Dan Bird MBE, Field Chief Technology Officer (EMEA) at Horizon3.ai. "That combination is no longer theoretical. It enables sustained disruption with direct economic and operational impact." Bird continued: "As the UK enters 2026, cyber resilience is firmly on the national agenda. The second reading of the Cyber Security and Resilience Bill reflects a growing recognition that cyber attacks are an operational risk, not an abstract one. Controls have to be validated under real conditions, not assumed to work on paper." "Hostile actors have first mover advantage in adopting new technology like AI and machine learning. We have to enable our customers to see from an attacker's perspective to find and fix their real weaknesses before others do." Introduced to Parliament in late 2025, the Cyber Security and Resilience (Network and Information Systems) Bill is expected to strengthen the UK's cyber framework throughout 2026. The legislation broadens the range of organisations subject to higher cyber standards, including managed service providers, data centres and critical suppliers, tightens incident reporting timelines and expands regulatory enforcement powers. From Assumed Risk to Proven Evidence Through its NodeZero(R) Offensive Security Platform, Horizon3.ai enables organisations to move from assumed risk to proof of exploitable attack paths, then to fix and verify. By conducting continuous testing, organisations gain clear insight into what impact they have on systems and business operations and proactively reduce. This approach helps align security teams, system administrators and business leadership around a shared, evidence-based understanding of risk - supporting faster prioritisation and more effective remediation. About Horizon3.ai Horizon3.ai's NodeZero(R) platform is trusted by over 40% of the Fortune 10, the world's largest banks, top global pharmaceutical and semiconductor manufacturers, critical infrastructure operators around the globe, and the U.S. Defense Industrial Base to proactively find, fix, and verify exploitable vulnerabilities to continuously fortify cyber defences and improve cyber resilience. The fastest-growing cybersecurity company in America (Inc. 5000, Deloitte Fast 500), Horizon3.ai was founded by a mix of U.S. Special Operations veterans and industry experts and is headquartered in San Francisco. Follow Horizon3.ai on LinkedIn and X. Trademark notice: NodeZero is a trademark of Horizon3.ai Further information: Press contact: Stephen Gates - [email protected], Web: www.horizon3.ai PR Agency: euromarcom public relations, [email protected] Share: Previus Post Horizon3.ai nomme Next Post Horizon3.ai ernennt Copyright 2026 euromarcom All Rights Reserved by euromarcom GmbH * Cookie-Richtlinie (EU) * Impressum & Datenschutz