Harmonic Security

Cybersecurity

SeniorBackendEngineer

£85–120k ~AI est. London, United Kingdom FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Senior Backend Engineer at Harmonic Security. Skills: Backend services, Distributed systems, Event-driven architecture, API design. Own deliveries and features. Design backend services”

Industry & Context.

Cybersecurity

What They're Looking For.

Must Have

3–5+ years software engineering, Java ecosystem experience, Event-driven architectures understanding, Asynchronous processing patterns understanding, Messaging systems understanding, Distributed system design understanding, RESTful APIs design experience, Web hooks design experience, Service-to-service integrations design experience, AWS, GCP, or Azure experience, Modern observability tooling experience, Logging platforms experience, Monitoring platforms experience, Performant applications track record, Reliable applications track record, Scalable applications track record

Nice to Have

Cybersecurity products experience, Identity products experience, Governance products experience, Compliance products experience, Data protection products experience, Enterprise SaaS environments experience, Architectural decisions understanding, Scalability, reliability, maintainability balance, Speed of execution balance, Security, observability, operational excellence focus, Software development, distributed systems, data-intensive applications blend, Authentication technologies familiarity, Identity technologies familiarity, OAuth familiarity, OpenID Connect familiarity, SAML familiarity, SCIM familiarity, Entra ID familiarity, Okta familiarity, Enterprise identity providers familiarity, Fast-paced startup environments experience, Shaping culture experience, Shaping engineering practices experience

What You'll Do.

Own deliveries and features

Design backend services

Build backend services

Implement core domain logic

Build backend services for operational use cases

Build backend services for analytics use cases

Build backend services for reporting use cases

Expose well-designed APIs

Power customer-facing UI experiences

Provide backend APIs for visibility

Provide backend APIs for analytics

Provide backend APIs for configuration

How You'll Work.

Team & Collaboration

Cross-functional teams

Full Job Description

Harmonic Security lets teams adopt AI tools safely by protecting sensitive data in real time with minimal effort. It gives enterprises full control and stops leaks so that their teams can innovate confidently.   We are led by cybersecurity experts and backed by top investors including N47, Ten Eleven Ventures, and In-Q-Tel. We have achieved early traction and product-market fit with a world-class team, and we are now focused on building a category-defining company. This is your opportunity to join us early and shape not just a product, but a category. 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 Our Product Delivery team is the engine that turns vision into impact. We ship early and often, getting valuable features into the hands of customers quickly and iterating from there. We work in the open by default, sharing progress and ideas, and we trust each other to own outcomes. We’re a small but mighty crew where every person plays a critical role and we’re committed to using AI to work smarter and faster. ABOUT THE ROLE We’re looking for a Backend Engineer who has an appreciation for all things security and system interconnectivity. This is a very hands-on technical role where you will be responsible for designing, building and maintaining scalable integrations between our core applications, identi

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