--- title: 'Sales Engineer (SouthEast) at Horizon3 AI' canonical: 'https://feeny.ai/job/sales-engineer-southeast-horizon3-ai-united-states-8fvrx9626e04' type: 'job' last_seen: '2026-09-12' --- # Sales Engineer (SouthEast) at Horizon3 AI - **Company:** [Horizon3 AI](https://feeny.ai/companies/horizon3-ai) - **Location:** United States - **Employment:** full-time - **Work type:** remote - **Posted:** 2026-09-03 - **Last confirmed live:** 2026-09-12 - **Apply:** https://jobs.ashbyhq.com/horizon3ai/ac69da16-2132-449c-a4e9-ffd1deea2209 ## Job description 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. As a remote first company, we require minimum 25Mbps consumer grade broadband connection. ## About the Role [Horizon3](http://Horizon3.ai) is redefining how organizations defend themselves against modern cyber threats. Our autonomous security platform, NodeZero, helps companies proactively find and fix vulnerabilities before attackers do. We’re looking for a Sales Engineer (this is open to candidates at the Mid to Senior Level) to partner closely with our Account Executives and help growing organizations understand the technical and business value of our platform. This role is ideal for someone who thrives in high-velocity environments, can simplify complex security concepts, and enjoys building trusted relationships with customers. ## What You’ll Do Be a trusted technical partner in Mid-Enterprise or Enterprise deals Work alongside AEs to support discovery, solution positioning, and technical validation across mid-sized organizations with diverse environments. Lead discovery and technical qualification Meet with prospective customers to understand their infrastructure, security maturity, compliance requirements, and risk priorities. Deliver tailored demos and PoVs Run compelling, outcome-driven demos and proof-of-value engagements that clearly connect NodeZero’s capabilities to customer risk reduction and business impact. Maintain continuity through the customer lifecycle Stay connected with key accounts to track evolving needs, ensure continued value realization, and surface expansion opportunities where it makes sense to. Translate technical depth into business value Help customers understand not just how the platform works, but why it matters—framing results in terms of exposure reduction, compliance alignment, and operational efficiency. Own technical deal strategy Navigate objections, competitive positioning, and technical concerns throughout the sales cycle. Collaborate cross-functionally Partner with Product, Engineering, Customer Success, and Product Marketing to ensure field feedback informs roadmap and positioning. Support enablement and knowledge sharing Contribute to internal knowledge sharing and continuously refine demo flows, technical assets, and playbooks for the Mid-Market segment. Own post-close technical continuity Stay engaged after the deal closes to ensure a smooth technical handoff, reinforce initial value, and maintain executive and practitioner alignment—remaining attentive to adoption, impact, and expansion signals ## What You’ll Bring - 5+ years of experience as a Sales Engineer or Solutions Architect, ideally in cybersecurity or infrastructure - Located in the southeast region of the United States - Experience working Mid-Market or Enterprise accounts with a mix of technical depth and executive interaction - Strong understanding of cybersecurity fundamentals (threat landscape, vulnerability management, identity, cloud, AD, etc.) - Ability to simplify complex technical concepts for both practitioners and executives - Experience running structured PoVs and managing technical validation cycles - Strong collaboration skills and comfort operating in a fast-paced, high-growth environment - Bachelor’s degree in Computer Science, IT, Cybersecurity, or related field (or equivalent experience) What Success Looks Like - You build strong, trust-based relationships with Mid-Market/Enterprise customers - PoVs are structured, outcome-driven, and consistently demonstrate clear value - You partner seamlessly with AEs and contribute meaningfully to pipeline progression and win rates - Customer feedback informs ongoing product and positioning improvements ## 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: - $195k - $270k OTE 70/30 Split 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. Perks of [Horizon3](http://Horizon3.ai) - 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. - Remote Work: We are a 100% remote company. Enjoy the flexibility to work in the way that supports you and brings out your best. - 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. 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 In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information. ## About Horizon3 AI ## Company Overview - **One-liner**: Horizon3.ai provides an autonomous penetration testing platform (NodeZero) that safely hacks production environments to identify and fix exploitable attack paths using AI. - **Entity Type**: Private (Series D – latest funding round in 2026, led by Prosperity7 Ventures) - **Headquarters**: San Francisco, California, United States (447 Battery Street, San Francisco, CA 94111) - **Founded**: 2019 - **Founders**: Snehal Antani (Co-Founder & CEO); founded by a mix of US Special Operations, US National Security, and cybersecurity industry veterans ## Core Business - **Primary industry**: Cybersecurity (autonomous penetration testing, vulnerability management, continuous security validation) - **Target customers**: B2B – large enterprises, Fortune 100, government agencies (NSA, CISA), healthcare providers, financial services, manufacturing, education, public sector - **Mission**: “Turn the map around” – using the attacker’s perspective to help enterprises prioritize defensive efforts. The company aims to shift the advantage from attackers to defenders by fighting AI with AI. ## Products & Services - **[NodeZero®](https://horizon3.ai/)**: Autonomous penetration testing SaaS platform. Safely runs real attack techniques in production environments (no agents, no disruption). Discovers and chains exploitable vulnerabilities, misconfigurations, harvested credentials, and dangerous defaults across external, identity, on-prem, cloud, and Kubernetes attack surfaces. Also includes Active Directory password auditing and phishing impact testing. Continuously validates fixes and repeats autonomously. ## Market Standing - **Valuation**: Not publicly disclosed - **Key Metrics**: - Annual Revenue: **$35.5M** (per LinkedIn) - Total Funding: **$187M** (per LinkedIn) / **$181M** (per CB Insights – conflicting reports; both cited) - **225,000+** production-safe tests completed - **5,000+** customers - **Notable Investors/Partners**: - SignalFire (lead in Seed, Series A, Series B) - Craft Ventures (lead Series C) - Prosperity7 Ventures (lead Series D – 2026) - **Growth Signals**: - Ranked **#1 in Security** on the 2025 Inc. 5000 list - **#3 overall** on the 2025 Deloitte Technology Fast 500 - Fast Company’s **Most Innovative Companies** (2026) – #1 in Security - Named to the **Fortune Cyber 60** (2023 & 2025) - Two-time **Black Unicorn Award** winner - Headcount grew **115.5% YoY** to 341 employees (LinkedIn) - Active job postings up **168.2% YoY**; operates in 14 countries ## Competitive Advantages - **AI-driven autonomous testing** that learns from hundreds of thousands of tests and uses the right AI (ML, GenAI) for each problem – delivers evidence-based results with **zero hallucinations**. - **Production-safe** – zero downtime across all production tests, trusted by the world’s most sensitive high-security environments (NSA, CISA, Fortune 10, major healthcare). - **No agents required** – fully self-service SaaS, safe to run continuously. - **Real attack techniques** – not a scanner; shows actual attacker paths and impact. - **Rapid verification** – instantly confirms fixes and repeats the cycle, enabling a continuous validation loop. ## Strategic Focus - **Continuous validation** – driving a loop of test-fix-verify-repeat autonomously. - **Fighting AI with AI** – building NodeZero to operate at machine speed against AI-powered attacks. - **Global expansion** – already in 14 countries, with active hiring in EMEA, APAC, and the Americas. - **Scaling the team** – 59 active job postings (as of mid-2026), with emphasis on engineering, sales, and customer success roles. ## Why Work Here - **Culture**: Rated **5.0/5.0 on LinkedIn** (76 reviews) with perfect scores for Culture (5.0), Career (4.9), Compensation (4.7), and Work-Life (4.6). Described as a “kick-ass organization hell bent on disrupting an industry” with a team of “motivated learn-it-alls.” - **Work Policy**: Remote-friendly (most roles listed as remote, HQ in San Francisco, CA). Offers flexibility across time zones. - **Notable Perks** (from Built In and LinkedIn): - Comprehensive healthcare (medical, dental, vision, FSA) - Life insurance, disability insurance - 401(k) with company matching - Equity and employee stock purchase plan - Generous parental leave and family medical leave - Performance bonuses - Job training, conferences, and customized development tracks - Promotion policies and career growth support - **Engineering Culture**: Built by US Special Operations and National Security veterans. Emphasis on high autonomy, real-world impact, and cutting-edge AI/security work. “If you want to be part of a kick-ass organization hell bent on disrupting an industry and keeping attackers at bay, let’s talk.” ## Sources 1. [horizon3.ai – Homepage](https://horizon3.ai/) 2. [horizon3.ai – About/Team](https://horizon3.ai/about-us/) 3. [LinkedIn – Horizon3.ai Company Page](https://www.linkedin.com/company/horizon3ai) 4. [Built In – Horizon3.ai Careers & Perks](https://builtin.com/company/horizon3ai) 5. [CB Insights – Horizon3.ai Profile](https://www.cbinsights.com/company/horizon-3-ai) ## Other roles at Horizon3 AI - [Account Executive, MSP (East)](https://feeny.ai/job/account-executive-msp-east-horizon3-ai-east-q4w5atyf2a5p) — East - [Senior Channel Field Marketing Manager, META](https://feeny.ai/job/senior-channel-field-marketing-manager-meta-horizon3-ai-dubai-0d5m3qsarw9t) — Dubai, United Arab Emirates - [Channel Account Manager, Midatlantic](https://feeny.ai/job/channel-account-manager-midatlantic-horizon3-ai-united-states-fj7veyksksrn) — United States - [Senior Manager, Sales Compensation & Incentive Strategy](https://feeny.ai/job/senior-manager-sales-compensation-incentive-strategy-horizon3-ai-united-states-nyed00v8m8gz) — United States - [Manager, Commercial Sales](https://feeny.ai/job/manager-commercial-sales-horizon3-ai-washington-tzanjykxxkvy) — Washington, DC - [Commercial Account Executive, DC](https://feeny.ai/job/commercial-account-executive-dc-horizon3-ai-washington-p55jz13x238t) — Washington, DC - [Sales Engineer (Enterprise, Pacific NorthWest)](https://feeny.ai/job/sales-engineer-enterprise-pacific-northwest-horizon3-ai-united-states-qja22wvgb4sq) — United States - [Partner Operations, MSSP](https://feeny.ai/job/partner-operations-mssp-horizon3-ai-united-states-338jd1v1m3nm) — United States - [Product & Privacy Counsel](https://feeny.ai/job/product-privacy-counsel-horizon3-ai-united-states-6c6sgefxegx0) — United States - [Sales Engineer (SouthWest)](https://feeny.ai/job/sales-engineer-southwest-horizon3-ai-southwest-vrtjjnpsxa8b) — Southwest