AI is being run everywhere, by humans and agents. Harmonic Security governs all of it. The AI Governance and Control (AIGC) platform understands user / agent intent and data context in real time, giving security teams visibility and control across every tool and workflow so companies can move faster with AI while minimizing risk.
We operate in one of the fastest-moving spaces in tech: the emerging intersection of AI and cybersecurity. It's a market still being defined, and we're among the first to build natively for it - protecting sensitive data in real time, at the endpoint, with minimal friction for the teams using it. Enterprises get full visibility and control. Their people get to innovate without guardrails slowing them down.
Named to the Rising in Cyber 2026 list, Harmonic is gaining serious recognition and serious traction. We're led by deep cybersecurity expertise and backed by investors who know the space: N47, Ten Eleven Ventures, and In-Q-Tel.
As AI adoption inside the enterprise accelerates, the ability to safely observe, control, and enforce policy in real time isn't a nice-to-have. It's mission-critical infrastructure. That's what we build.
How We Work: AI-First by DesignHarmonic exists to help enterprises adopt AI safely and at scale. We hold ourselves to the same standard. Everyone at Harmonic actively uses AI tools to do their best work, from research and writing to building processes and automating workflows. We expect every new hire to bring curiosity about AI and a willingness to use it to work smarter, faster, and more creatively. For some roles, that means tinkering and staying open to new tools. For others, it means building entirely new systems with AI at the core. We'll be clear about what we expect for each role, and we'll give you the tools and support to get there.
About the TeamOur Sales team is in the early stages of building something extraordinary. We’re a tight-knit, ambitious group laying the groundwork for how Harmonic goes to market. Every rep plays a critical role in building pipeline, landing new logos, and shaping how Harmonic goes to market. We’re builders as much as sellers — refining the playbook, collaborating across teams, and creating repeatable success.
About the RoleWe’re looking for a Sales Representative to drive growth across the UK. You’ll own the full sales cycle: identifying prospects, building relationships, running demos, negotiating deals, and closing new business. This is an opportunity to join a category-defining company at the ground floor — building your territory while influencing how we sell as a team.
What You’ll DoOwn the full sales cycle: prospect, qualify, demo, negotiate, and close
Build and manage pipeline across assigned territory
Develop account strategies in partnership with leadership
Drive outbound prospecting and convert inbound leads
Deliver compelling, tailored presentations and product demos
Collaborate with Marketing, Product, and Customer Success for alignment and feedback
Represent Harmonic at customer meetings and industry events
Contribute to shaping our sales playbook and scaling best practices
4-8+ years of quota-carrying B2B SaaS cybersecurity sales experience
Track record of hitting or exceeding quota in a closing role
Comfort with outbound prospecting and building a territory from scratch
Strong communication, storytelling, and relationship-building skills
Ability to manage complex sales cycles with technical and business stakeholders
Organized, resourceful, and thrives in a startup/Series A environment
Love the challenge of opening new markets and winning early customers.
Thrive in fast-moving, ambiguous environments where you help create structure.
Enjoy collaborating with Marketing and Product to refine messaging and positioning.
See sales as both art and science, and you’re excited to shape the modern playbook for what high-velocity sales looks like in the age of AI.
Believe AI and security will define the next decade of enterprise software.
Are open to new tools and ways of working; you don’t need to be an AI power user, but you’re willing to adopt AI-assisted workflows for research, prep, follow-ups, and pipeline management.
Are curious about how AI is changing enterprise buying and can lead a credible conversation about that shift with customers, rather than just pitching a product.
Constantly look for ways to make your work more effective and efficient by automating the repetitive and rethinking the defaults.
Choose to spend your energy on the work that moves deals, rather than the manual work that fills spreadsheets.
This isn't just a job - it's a chance to help define a category. Harmonic Security was named to the Rising in Cyber 2026 list, and we're just getting started. We're building at the intersection of AI and security, carving out an emerging market where the rules haven't been written yet, and the people who join now will write them.
We believe today's talent is tomorrow's success, and we're committed to creating an environment where you can do the best work of your life.
Recognized momentum - We made the Rising in Cyber 2026 list, a signal that the market is taking notice
Rare market opportunity - Join early in a category-defining company at the convergence of AI and security, where your work directly shapes how enterprises tackle one of the biggest unsolved problems in tech
Competitive pay and meaningful equity - A real stake in Harmonic's success, not a token gesture
Comprehensive benefits - 401K, pension plan, generous PTO, and flexible hybrid work
A small, high-trust team that values transparency, creativity, and continuous learning - no politics, no bureaucracy
Thoughtful leadership - that cares deeply about your growth, not just your output
Annual global off-sites - past trips include Lisbon, Portugal and Nashville, TN
Real ownership - you'll shape the product, the culture, and the direction of the company from day one
We embrace new, unfamiliar situations that require initiative and rapid decision-making. We orient ourselves quickly and deliver results with minimal guidance.
🔥 Never Full
We raise our hands, take on challenges, and assist others whenever possible. We hunger for opportunities to learn and do more.
🤝 Perfect Harmony
We support one another to create cohesion and unity. We collaborate openly, share feedback honestly, and help everyone produce their best work.



