Senior Java Platform Engineer – API Gateways & Edge

Anaplan; York and North Yorkshire; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Anaplan in York, UK is seeking an Engineer IV to lead design, delivery, and architecture of platform capabilities powering enterprise-scale API gateways, edge routing, and developer acceleration.

You will build high-throughput backend engines for multi-tenant orchestration, collaborate with architects across the Platform Experience domain, and drive deployment innovations with GitOps (ArgoCD, Helm) while ensuring observability and scalability.

Qualifications

• Extensive background in software engineering within enterprise-scale, high-throughput platform or data-centric environments.
• Understand, leverage, and integrate modern AI tools and concepts—includ­ing agentic programming patterns and LLM-assisted workflows—to accelerate platform engineering and developer velocity.
• Deep expertise in backend JVM languages (Java and/or Kotlin) with a strong understanding of distributed systems internals.
• Proven track record of delivering API-first infrastructures, API Gateways (e.g., Traefik), and edge routing solutions that guarantee enterprise reliability under sustained traffic loads (2K+ requests per second).
• Hands-on experience with Kubernetes, containerized deployments, and managing complex CI/CD pipelines (strong familiarity with GitOps, ArgoCD, and high-velocity release workflows).
• Solid grounding in event-driven architecture, real-time data processing, and managing complex database transaction scopes at scale.
• Experience balancing rapid prototyping and fast iteration with long-term sustainability and quality-you have a bias for action and prefer to try and iterate rather than wait for perfect information.
• Exceptional technical communicator with a proven ability to align globally distributed teams.

Responsibilities

• Design, deliver, and architecture of platform capabilities powering API gateways, edge routing, and developer acceleration.
• Build and scale high-throughput backend engines that manage core request orchestration, multi-tenant isolation, and API-first solutions serving thousands of tenants and users.
• Partner with architects to set technical direction, aligning implementation patterns for complex initiatives across the Platform Experience domain.
• Drive deployment infrastructure with modern GitOps workflows (ArgoCD, Helm) and highly available containerized orchestration.
• Own foundational features end-to-end—from design through production—while improving observability and addressing concurrency challenges.
• Deliver integration between backend microservices and UI components, resolving complex CORS and distributed edge proxy requirements.
• Mentor engineers across global teams through design reviews and pair programming to foster engineering excellence.

Skills

Software engineering

Backend development

API-first architectures

Kubernetes

CI/CD pipelines

GitOps

Java/Kotlin

Distributed systems

Code mentorship

Team collaboration

Tools

Traefik

ArgoCD

Helm

Kubernetes

Job description

Anaplan in York, UK is seeking an Engineer IV to lead design, delivery, and architecture of platform capabilities powering enterprise-scale API gateways, edge routing, and developer acceleration.

You will build high-throughput backend engines for multi-tenant orchestration, collaborate with architects across the Platform Experience domain, and drive deployment innovations with GitOps (ArgoCD, Helm) while ensuring observability and scalability.