819,440open jobs
52,731companies
133,157added this week
Browse all
Salary
≈ $58k – $126k per year (Estimated)
Location
Hybrid (London, United Kingdom)
Seniority
Junior · 1+ year exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Sep 26, 2026. First seen by Alion on Sep 26, 2026.

Overview
Company
Impact
Profile match
Harmonic Security prevents employees from pasting sensitive data into public generative artificial intelligence tools. Founded in 2023 in London, it classifies content with its own models rather than brittle regular expression rules. The product gives security teams visibility into which assistants staff actually use.

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 Design

Harmonic exists to help enterprises adopt AI safely and at scale. We hold ourselves to that same standard. Everyone here actively leverages AI tools to perform their best work - from deep research and writing to building robust processes and automating complex workflows. We expect every new hire to bring a genuine curiosity for AI and a commitment to using it to work smarter, faster, and with greater creativity.

For some, this involves tinkering and remaining open to emerging tools; for others, it means architecting entirely new systems with AI at the core. We will be transparent about expectations for every role and provide the tools and support needed for you to thrive.

About the Team

We are building a Strategic Accounts team focused on Fortune 100 and Fortune 250 Profile of business. Selling to these organizations isn’t the hard part. They have the same AI transformation problems as everyone else.

We don’t get into these organisations through cold email, LinkedIn messages or phone sequences. We get in through high-value interactions and Network: introductions from partners, advisors and investors, executive roundtables, industry panels, peer communities and the occasional well-timed coffee. This role exists to work with the strategic account team to build active, high-value, and exciting campaigns of activity that create those paths and turn them into Meaningful engagements, then help steer opportunities and keep the momentum going once we’re inside.

You’ll work alongside highly experienced Global account sellers. You will learn more about how large, complex enterprise deals really get done in a year here than most people ever learn.

What You'll Do

Find the way in:

  • Map target accounts: who the real decision makers and influencers are, how they’re organized, what they care about right now, and who they already know.

  • Work out the warmest routes to those people through our investors, advisors, channel partners, customers and the team’s own networks.

  • Spot the moments that matter: the conference panel a target CISO is speaking on, the roundtable we should be hosting, the partner who already sits inside the account.

  • Turn all of that into a short, prioritized plan for each account, and then get on with it.

Make it happen:

  • Run the activity, not just the plan. Book the meetings, brief the introducers, draft the notes, chase the follow-ups.

  • Work with our marketing team on targeted, account-based campaigns and executive events for specific accounts.

  • Prepare account briefings before meetings so every conversation starts from real insight.

  • Track signals across target accounts (leadership changes, AI initiatives, regulatory pressure, news) and flag the ones worth acting on.

Keep the momentum:

  • Once we’re engaged with an account, help drive the campaign forward: stakeholder coverage, next steps, content, and making sure nothing stalls.

  • Support all three sellers through a simple weekly prioritization, typically running two to three active account campaigns per seller at any one time.

What This Role is Not

This is not an SDR or BDR role. There are no call targets or email cadences, and we will never ask you to cold message a Fortune 100 CIO. It’s also not a marketing planning role where you design a campaign and hand it to someone else. You are the person who makes it happen. If you like building a plan and then being the one who actually executes it, you’ll love this.

What You Bring

  • One to three years into your career, whether in sales, marketing, consulting, research, events, recruiting, politics or something else entirely. We care far more about how you think than where you’ve been.

  • Genuinely smart and curious. You enjoy figuring out how a large organization works and who really makes the decisions.

  • An executer. When you have an idea, you’ve usually already started on it by the time you mention it.

  • Comfortable working on your own and moving fast, with good judgement about when to ask for help.

  • A clear, concise writer. You can brief a senior executive in five sentences.

  • Confident around senior people without needing to be the loudest person in the room.

  • Interested in AI and security. You don’t need to be an expert, and we’ll teach you what you need to know.

What You’ll Get

  • Hands-on mentoring from people who have spent decades selling to the world’s largest organizations.

  • Direct exposure to executive conversations at some of the most recognisable companies in the world.

  • A real path forward. The skills you build here are exactly the ones that make great enterprise sellers.

Why Join Us

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

Harmonic's Core Values

Flourish in the Unknown

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

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
819,440 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Sales
Similar stack
Same company
London
$90k – $130k per year • In office • Full-Time • 2+ years exp • Bachelor's Degree • Miami
Apply
Account Executive 4 days ago
≈ $55k – $120k per year (Estimated) • Hybrid • Full-Time • 1+ year exp • Bachelor's Degree • Birmingham
Apply
≈ $52k – $115k per year (Estimated) • Equity • Hybrid • Full-Time • New York
Management
Microsoft Office
Apply
Account Executive 3 days ago
$60k – $68k per year • Hybrid • Full-Time • 1+ year exp • Bachelor's Degree • New York
Management
Agile
Microsoft Office
Apply
$50k per year • Equity • Hybrid • Full-Time • New York
Management
Microsoft Office
Apply
Content Lead 3 hours ago
≈ $55k – $148k per year (Estimated) • In office • Full-Time • 3+ years exp • Vienna
Marketing
LinkedIn
Apply
$66k – $99k per year • In office • Full-Time • 1+ year exp • London
Marketing
LinkedIn
Apply
$70k – $150k per year • In office • Full-Time • 4+ years exp • New York
Analytics
A/B Testing
Marketing
YouTube
LinkedIn
Apply
$42k – $52k per year • In office • Long Beach
Marketing
LinkedIn
Apply
$55k – $75k per year • Hybrid • Full-Time • 1+ year exp • Austin
Marketing
LinkedIn
Apply
$150k – $170k per year • Remote (United States) • Full-Time • 8+ years exp
AI/ML
Copilot
Model Context Protocol
AI Agents
LLM Guardrails
Apply
$150k – $160k per year • Remote (United States) • Full-Time • 8+ years exp • Chicago
AI/ML
Copilot
Model Context Protocol
AI Agents
LLM Guardrails
Apply
$130k – $146k per year • Hybrid • Full-Time • 5+ years exp • London
Java
Java
Maven
Spring Boot
Gradle
DevOps
GCP
Azure
AWS
Cybersecurity
Okta
Microsoft Entra ID
Apply
Recruiter 5 days ago
$90k – $130k per year • Remote (United States) • Contractor • 3+ years exp
AI/ML
Copilot
Claude
Model Context Protocol
AI Agents
LLM Guardrails
Apply
$130k – $152k per year • Hybrid • Full-Time • 6+ years exp • London
Python
Java
Rust
TypeScript
AI/ML
Copilot
Model Context Protocol
AI Agents
LLM Guardrails
DevOps
Terraform
OpenTofu
AWS
IAM
Cybersecurity
ISO 27001
SOC 2
Threat Modeling
Apply
≈ $32k – $69k per year (Estimated) • In office • Internship • Bachelor's Degree • London
Apply
In office • Full-Time • London
Apply
≈ $36k – $67k per year (Estimated) • In office • London
Apply
≈ $78k – $152k per year (Estimated) • In office • Full-Time • 5+ years exp • Bachelor's Degree • London
Apply
≈ $111k – $187k per year (Estimated) • In office • Full-Time • 5+ years exp • Bachelor's Degree • London
Apply
See all jobs
This is one of many
819,440 more open roles from verified company boards, updated every day.