Senior Commercial Account Executive, Eastern Europe

Get to Know Us

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organisations 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 organisations 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. 

About the role

We are hiring for our second Commercial Account Executive to help grow the Commercial business (companies with less than 1500 employees) across the Eastern Europe region.

You will help grow the Commercial business in your market by building strong relationships, creating new logo momentum, and working closely with partners and the wider team to expand Horizon3’s reach.

We are looking for experienced sellers who enjoy building. They should be proactive, thoughtful, and comfortable helping markets develop. They should carry the story well, build trust with customers and partners, and help turn ambition into market presence, new logo growth, and long-term opportunity.

How we work

Our Commercial team comes together in the Amsterdam hub to collaborate, learn from each other, and build community around the Commercial business.

At the same time, we work for and in our local markets. That means staying close to customers, partners, and market activity. Travel in-region is part of the role.

In each market, the Commercial seller, Enterprise seller, Partner Manager, Sales Engineer, and Commercial leader may report into different leaders, but they share collective responsibility for helping the market work well and for making Horizon3 successful in the region.

What you will do

• Grow the Commercial business in your assigned markets through strong customer engagement, partner collaboration, and good market execution

• Create new logo momentum and build pipeline in a way that fits the local market

• Build and manage opportunities with good judgement, clear ownership, and strong follow-through

• Work closely with partners, distributors, MSSPs, Enterprise sellers, Partner Managers, and Sales Engineers to help the market work well

• Contribute to partner and territory plans and help turn those plans into action

• Work across Marketing, Channel, Sales Engineering, Sales Ops, Deal Desk, and leadership to move business forward

• Bring useful market feedback back into the business

• Represent Horizon3 well with customers and partners

• Keep building your capability, product knowledge, and commercial effectiveness over time

What success looks like

Success in this role is about helping the market grow and contributing to a strong Commercial motion in-region.

You will be successful if you:

• Create new logo momentum and help grow the Commercial segment in your markets

• Build strong relationships with customers, partners, and internal teams

• Manage opportunities well and help move business forward with consistency and ownership

• Become productive quickly and continue to grow in impact over time

• Bring useful market insight back into the business

What we are looking for

We are looking for experienced Commercial sellers who are comfortable working in a fast-paced environment and helping build markets.

Strong candidates will bring:

• More than 4 years of closing experience in IT or cybersecurity sales

• Experience in Commercial or mid-market sales, ideally in more than one market or in a regionally complex environment

• Confidence working with partners, distributors, MSSPs, and cross-functional teams

• Good commercial judgement and the ability to navigate opportunities with customers, partners, and internal stakeholders

• Strong ownership, follow-through, and comfort with visibility and accountability

• Curiosity, coachability, and a desire to keep learning and improving

• Comfort working in a scaling business where structure is still being built

• Native-level fluency in Polish or another language from the region, plus strong English

• A proactive, builder mindset: someone with a point of view who stays close to the market, works well with customers, partners, and the wider team, and looks for better ways to increase reach, efficiency, and impact

Why this role matters

This is a chance to help shape how Commercial grows across EMEA.

If you want a role where you can help build markets, work closely with partners and customers, and play a meaningful part in how a new category develops in-region, this is that role.

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.

• Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

Perks of 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.

• Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Amsterdam 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.

You Belong Here

Horizon3.ai 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.ai, 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.ai, 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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