Senior Sales Development Representative, UKI
Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Aug 21, 2026. Horizon3 scores B on the Alion truth index.
Get to Know Us
Horizon3 is a fast-growing 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 looking to build out our Sales Development Representative (SDR) in EMEA. Founded in 2019 by industry, US Special Operations, and US National Security veterans, you'll get to work alongside an extremely knowledgeable and supportive team. From facilitating initial conversations to developing team-wide best practices, you will be an integral member of our growing sales organization. In sum, your responsibility will assist with expanding our customer base, generate potential leads, solicit potential customers, facilitate sales and connect customers with the right salesperson.
Identify and secure new sales opportunities by initiating outbound cold calls, crafting compelling emails, leveraging social media platforms, and tapping into various communication channels.
Promptly follow up with inbound leads to ensure no opportunity is missed, demonstrating attentiveness and professionalism in every interaction.
Use professional communication skills and create an excellent first impression to prospects. Instigate a strong strategy to attract customers, using email and call scripts.
Utilize prospecting and research tools like LinkedIn Sales Navigator, Seamless.ai, etc. to coordinate with assigned reps to identify potential opportunities; implement effective handoff plans, and prepare for qualification calls and discovery meetings with target prospects.
Manage scheduling and calendaring of sales calls, emails and other engagements.
Keep track of leads and execute with agility by developing and following up.
Effectively collaborate and work cooperatively with cross-functional teams (Product, Engineering, Legal, Policy, Operations, etc.) across initiatives.
Strategise with the team to innovate and improve the overall sales development process.
Stay up to date and informed with product and service information. Maintain expected knowledge of the products to answer potential questions from customers.
Setting, monitoring, and striving to exceed sales goals, ensuring consistent progress towards achieving targets.
This position is based in our Amsterdam office, with hybrid working model.
What You’ll Bring
Up to 1 year of experience working in a Sales Development role.
Some prior experience in the information security, cybersecurity, or SaaS space.
University degree or equivalent work experience.
Knowledge of online privacy, security standards, and product compliance (e.g. internet of secure things).
Collaborate with cross-functional teams (Product, Engineering, Marketing, etc.).
Partnership development experience, including identifying partners, and structuring and discussing agreements.
Exhibit problem-solving qualities including an entrepreneurial and creative approach, persistence, attention to detail, and demonstrated collaboration instincts.
Experience with software like Outreach.io, Zoominfo, and Salesforce CRM.
Fluency in English
Travel Requirements
Occasional travel within EMEA may be required. All job-related travel expenses must be reviewed and approved by your manager.
This position is based in our Amsterdam office, with hybrid working model.
Perks ofHorizon3
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.
Competitive Compensation: We offer competitive salary, equity and benefits.
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.
Depending on experience the salary range for this role is: OTE €70,000 - €85,000 with a 60/40 split.
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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