Senior Back-end Security Engineer - Java / Kotlin / Golang

Overview: We're working with a fast-growing Cloud Security Client on the hunt for an experienced Senior Backend Engineer to join their world-class engineering team.

This is a rare opportunity to shape the architecture and scalability of a runtime-powered Cloud-Native Application Protection Platform used by global enterprise customers.

As part of a highly skilled, collaborative team, you'll work on complex backend challenges using modern Java/Kotlin in a fully cloud-native environment with exposure to cutting-edge tools and real-world security impact.

Key Responsibilities:

• Own the full lifecycle of backend services, from design and development through to deployment, monitoring, and optimisation
• Contribute to architectural direction and technical decision-making across microservices
• Conduct peer design and code reviews as part of a high-trust, high-performing team
• Collaborate with DevOps, frontend, and product teams to deliver scalable and secure features
• Continuously improve system performance, reliability, and efficiency in production at scale

Essential Skills & Experience:

• Experience building high-performance backend systems using Java, Kotlin, or Golang
• Strong understanding of cloud platforms (AWS, GCP, or Azure) and modern deployment workflows
• Experience working with data-intensive systems - including databases, messaging queues, and event-driven services
• Proven ability to deliver production-grade services in a microservices-based architecture
• Comfortable working in CI/CD pipelines and containerised environments (e.g. Docker, Kubernetes)
• Collaborative mindset and a strong sense of ownership and initiative

Desirable Skills:

• Exposure to systems like Neo4j, ElasticSearch, TimescaleDB, RabbitMQ, Redis
• Experience working on security-focused platforms or distributed cloud infrastructure
• Familiarity with observability and monitoring tools at scale

Why Apply?

• Play a key role in one of the most exciting and fast-growing companies in cloud security
• Tackle complex engineering challenges with a talented global team
• Work with modern tech in a truly cloud-first, high-impact environment
• Competitive salary, flexibility, and the opportunity to shape product and platform direction from an early stage

What's in it for you?

• Salary up to £120k
• 35 days holiday
• Private pension & healthcare