Harmonic Security, Inc

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 Customer Engineering is a brand-new function at Harmonic, and you'll be one of the first people to build it. This is a deliberate philosophy, not just a new team name: we're treating customer experience as an engineering problem. Every repeated question or manual fix is a signal that something should be automated, instrumented, or resolved at the root, not answered by hand. The mission is simple to state and hard to do well: give customers fast, accurate answers, and use engineering to make the next hundred questions faster to answer than the last one. That means real backend work - fixing bugs, shipping small customer-driven improvements, and building automation and tooling that reduces how much of this has to be done by hand at all. You'll have direct influence over how this function is run, tooled, and measured from day one. About the Role We're looking for a Backend Engineer to sit inside Customer Engineering rather than the product roadmap team. You'll be the technical backbone for how we support and delight customers day-to-day: triaging and fixing bugs, resolving smallish customer requests, spotting opportunities to get ahead of a problem or surprise a customer with something they didn't ask for, and - critically - building tools and automation that let customers (and the team around you) get answers without needing an engineer in the loop every time. You'll work across our core applications, identity providers, and data security platforms, and you'll bring the same engineering rigor to this function as you would to product work - just pointed at a different problem. What You'll Do Triage, diagnose, and fix customer-reported bugs across our backend services Deliver smallish customer-driven requests and improvements, keeping a lightweight roadmap of your own Build tooling and automation that let customers and internal teams self-serve answers, cutting down repeat questions that would otherwise need an engineer Dig into microservices, event-driven pipelines, and integrations with identity providers and data security platforms to find and resolve root causes, not just symptoms Work directly with customers and internal stakeholders to understand what's actually blocking them, then decide whether the right fix is a patch, a tool, or a process change Instrument and monitor the systems customers depend on so recurring issues get surfaced and fixed before they pile up - and so you can spot chances to reach out or ship something before a customer even raises it Look for moments to delight, not just resolve: a workflow that could be smoother, a report that could be automatic, a question that could be answered before it's asked Track how much of the customer experience is still manual, and systematically drive that down through automation and fixes Help define what "good" looks like for this function - process, tooling, and metrics - since you're building it from scratch What You Bring 5+ years of professional software engineering experience building backend services and distributed systems in the Java ecosystem (Java, Spring Boot, Maven) Strong understanding of event-driven architectures, asynchronous processing patterns, messaging systems, and distributed system design Proven experience designing and maintaining RESTful APIs, web hooks, and service-to-service integrations Comfortable operating in AWS, GCP, or Azure environments and working with modern observability tooling, logging, and monitoring platforms A track record of delivering performant, reliable and scalable applications Excellent collaboration and communication skills in cross-functional teams, including direct, empathetic communication with customers Comfortable moving between hands on debugging, small feature delivery, and building internal tooling in the same week You Might Be a Fit if You Have experience building products in cybersecurity, identity, governance, compliance, data protection, or enterprise SaaS environments You understand not just how to build systems, but why architectural decisions matter You can balance scalability, reliability, maintainability, and speed of execution You think critically about security, observability, and operational excellence from day one Love the idea of blending software development, distributed systems and data-intensive applications Strong familiarity with authentication and identity technologies such as OAuth, OpenID Connect (OIDC), SAML, SCIM, Entra ID (Azure AD), Okta, or other enterprise identity providers Thrive in fast paced startup environments where ambiguity is the norm Enjoy shaping culture and engineering practices, not just writing code - especially for a function that doesn't exist yet Get satisfaction from unblocking a customer quickly, and then from automating away the need to do it again Prefer variety and a mix of problem sizes over long, single-threaded builds Leverage AI tools as an engineer to help you build smarter, faster and better Why Join Us This isn't just a job - it's a chance to help define a category. 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

Harmonic Security, Inc is seeking a Backend Engineer to join Customer Engineering, shaping the initial function and delivering fast, reliable support to customers. You will work across core apps, identity providers, and data security platforms to triage bugs and implement small improvements. You'll build automation, monitor systems, and collaborate with customers to understand blockers, deciding whether fixes are patches, tools, or process changes, while advancing the team's automation agenda.

Harmonic Security is seeking a Senior DevOps Engineer to design, build, and maintain scalable infrastructure powering our security platform. You will automate cloud deployments, implement reliable CI/CD, and drive best practices across engineering and operations. Join a fast-moving startup at the AI-security edge, where you'll influence architecture decisions, work across AWS regions, and help ensure resilience and security while enabling the team to move quickly and safely.

Harmonic Security in London seeks a Senior Product Security Engineer to own and evolve the platform's security architecture, writing production code that hardens authentication, authorization, encryption, and multi-tenant isolation. You will define security standards, run threat modeling, and partner with engineering to bake security into design time. This role emphasizes hands-on coding, accountability, and building secure systems for enterprise-grade AI-enabled workflows in a fast-moving

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 sell security to some of the most demanding enterprise security teams in the world, and we've held ourselves to that bar from day one. Our engineers have already built a platform architecture we're genuinely proud of - strong foundations across authentication, data isolation, and secrets handling - but it's been built by generalist engineers who split their time across security and everything else on the roadmap. It's good precisely because good engineers cared about it, not because it had a specialist behind it. Now we want to bring in someone whose full-time focus is security architecture, to take that foundation and push it further than a generalist team has the bandwidth to. This isn't an audit or compliance function, and it's not a rescue mission. It's an engineering one, building on top of something solid rather than starting from zero. About the Role We're looking for a Senior Product Security Engineer to become the authority on our platform's security architecture - and to write the code that embodies it. You'll inherit a platform where the fundamentals of authentication and authorization, secrets and key management, encryption, and multi-tenant data isolation are already in decent shape, and your job is to sharpen, harden, and evolve them with the depth a dedicated specialist brings that a generalist team can't. Once you set a standard, the rest of engineering builds to it - that's a formal mandate, not a suggestion. You'll spend the majority of your time writing production code, not producing reports on someone else's. This is deliberately not a role for someone who wants to sit on a security team finding holes in what other people have already shipped. We want someone who'd rather build the fix into the architecture in the first place - hands-on, opinionated, and accountable for the outcome. What You'll Do Take formal ownership of Harmonic's platform security architecture - authentication and authorization, secrets and key management, encryption at rest and in transit, and multi-tenant data isolation - and evolve it beyond what a generalist engineering team has had the focus to do Write production code that directly hardens and extends these patterns in our core platform, not just documentation describing them Set security engineering standards for the wider engineering team, and have the mandate to enforce them - this isn't advisory Manage your own backlog of platform security improvements, prioritized independently of the product roadmap Run threat modeling and architecture reviews on major new systems and integrations before they ship, so security is designed in rather than retrofitted Partner directly with engineering leads to embed the right patterns at design time, and support them in meeting the standards you set Keep our own security posture ahead of what our most demanding enterprise customers and their security teams expect from us Stay current on the threat landscape relevant to AI agent security, sensitive data handling, and multi-tenant SaaS platforms What You Bring 6+ years of hands on software engineering experience, with deep specialization in security architecture rather than general backend development Proven track record designing and personally implementing platform-level security controls in production - OAuth/OIDC/SAML, encryption, secrets and key management, multi tenant isolation Strong grounding in threat modeling and secure-by-design principles, applied to real architectural decisions rather than theoretical frameworks Comfort setting technical standards that other engineers are expected to follow, with the communication skill to bring people along rather than dictate from a distance Experience with cloud security fundamentals (AWS, GCP, or Azure) - IAM, network security, container and Kubernetes security A track record of shipping secure, reliable, production-grade code, not just reviewing or auditing someone else's You Might Be a Fit if You Have built or hardened platform-level security in a SaaS company that faces serious enterprise scrutiny (SOC 2, ISO 27001, customer security questionnaires, or similar) Would rather build the fix into the architecture than find the next hole in someone else's code Enjoy being the go to authority on a topic and setting the standard, rather than gatekeeping other people's work Are comfortable being the first specialist in this seat, inheriting a solid foundation and having the autonomy - and responsibility - to take it further Understand not just how to build secure systems, but why specific architectural decisions matter for real attackers, not hypothetical ones See the irony and the opportunity in a security company needing excellent security architecture of its own, and want to be the person who delivers it Thrive in fast-paced startup environments where ambiguity is the norm Leverage AI tools as an engineer to help you build smarter, faster and better Why Join Us This isn't just a job - it's a chance to help define a category. 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 platform, 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

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 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 Team We sell security to some of the most demanding enterprise security teams in the world, and we've held ourselves to that bar from day one. Our engineers have already built a platform architecture we're genuinely proud of - strong foundations across authentication, data isolation, and secrets handling - but it's been built by generalist engineers who split their time across security and everything else on the roadmap. It's good precisely because good engineers cared about it, not because it had a specialist behind it. Now we want to bring in someone whose full time focus is security architecture, to take that foundation and push it further than a generalist team has the bandwidth to. This isn't an audit or compliance function, and it's not a rescue mission. It's an engineering one, building on top of something solid rather than starting from zero. About the Role The Senior DevOps Engineer is responsible for designing, building and maintaining the highly scalable infrastructure that powers our applications. This role is a blend of automation, infrastructure design and CI/CD pipeline development. What You'll Do Your primary focus is the automation and standardisation of our cloud infrastructure and deployment processes. Develop reusable modules to enforce consistency and best practices across all environments. Design and implement highly available and fault tolerant architectures on AWS utilising multiple AZs and regions. Build, maintain, and optimise CI/CD pipelines using GitLab CI/CD. Manage and configure GitLab Runners (specifically on Docker or AWS EC2/ECS) for scalable and efficient job execution, ensuring fast feedback loops for developers. What Success Looks Like You evangelise and implement DevOps best practices, including shift left security, monitoring, alerting and logging. The platform provides an outstanding experience with minimal friction for both the development and operations teams, allowing everyone to do their best work. Highly available, well maintained platform backed by repeatable processes that allow us to meet and exceed the highest standards for security and resilience. What You Bring Experience with infrastructure as code tooling (preferably Terraform/OpenTofu). Experience with cloud services (preferably AWS). Understanding of networking and web applications. Knowledge of Docker and container orchestration platforms. Knowledge of Linux/Unix based operating systems. Experience of CI/CD tooling (GitLab, GitHub, etc.). Experience of troubleshooting issues with infrastructure and web applications. Proficient in one or more scripting languages (Bash, Python etc.). Experience with monitoring and log management tooling (Prometheus, Grafana, ELK, CloudWatch etc.). Experience working within a fast moving software development organisation. You Might Be a Fit if You Have a solid understanding of development processes; you likely started as a developer before moving into DevOps and identify as "more Dev than Ops." Love the idea of building and maintaining resilient, modern infrastructure designed to handle massive, high concurrency workloads. Thrive in fast paced startup environments where ambiguity is common and you have the agency to solve it. See AI as a fundamental tool to help you architect, deploy, and monitor systems smarter, faster, and better. Actively use AI tools (Claude Code, Cursor, or similar) to accelerate your work, from writing IaC and debugging pipelines to researching and prototyping new architecture. Stay current on how AI is changing the DevOps and SRE domains, with strong opinions on where it adds value and where it introduces risk. Refuse to default to the infrastructure playbook you've been running for the last decade-instead, you look for ways to automate the mundane and rethink legacy workflows. Choose to spend your energy on the complex engineering problems that actually require your expertise, rather than manual, repetitive tasks. Why Join Us This isn't just a job - it's a chance to help define a category. 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 platform, the culture, and the direction of the company from day one