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# Senior Backend Engineer

- **Company:** Harmonic, Inc.
- **Location:** Greater London, UK
- **Experience:** Expert
- **Salary:** £89,000.0 - £105,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, User Authentication, Microsoft Azure, Big Data, Data Security, Distributed Systems, Gradle, Apache Maven, Enterprise Messaging Systems, OAuth, OpenID, Openid Connect, Azure Active Directory, Security Assertion Markup Language (SAML), Software Engineering, Systems Integration, Datadog, Data Logging, Okta, Spring-boot, Backend, Event Driven Architecture, Build Tools, Software Coding, Restful APIs, Webhooks, Microservices
- **Published:** September 8, 2026
- **Apply:** https://www.collegerecruiter.com/job/2840620884-senior-backend-engineer

## About the Role

* 3-5+ years of professional software engineering experience building backend services and distributed systems in the Java ecosystem (Java, Spring Boot, Maven/Gradle)
 * Strong understanding of event-driven architectures, asynchronous processing patterns, messaging systems, and distributed system design
 * Proven experience designing and maintaining RESTful APIs, webhooks, 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, * 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
 * Leverage AI tools as an engineer to help you build smarter, faster and better

## Description

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, identity providers and data security platforms., * Design, build, and own backend services in a microservices-based, event-driven architecture

 * Implement core domain logic that drives key product workflows and system behavior
 * Ingest and process high-volume usage and event data from customer-facing endpoints
 * Build backend services that support operational, analytics, and reporting use cases
 * Model, persist, and manage domain data, enabling querying, filtering, and lifecycle management
 * Expose well-designed APIs and webhooks consumed by customers, UIs, and external systems
 * Power customer-facing UI experiences by providing backend APIs for visibility, analytics, and configuration


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