Senior Middleware Engineer
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Job Description
Senior Middleware Engineer leading messaging and integration platforms including RabbitMQ and Redis. Collaborating with DevOps and development teams to deliver resilient solutions across the organization.
Responsibilities:
- Architect, deploy, and operate enterprise messaging and middleware platforms including RabbitMQ, Redis, and Azure Service Bus across development, staging, and production environments.
- Design and govern event-driven and message-driven integration patterns: pub/sub, competing consumers, dead-letter handling, saga/choreography, and request-reply.
- Lead performance engineering for middleware: tune RabbitMQ broker configuration, channel and prefetch settings, Redis eviction policies, cluster topology, and Azure Service Bus namespace tiers and partitioning.
- Define and enforce standards for message schema design, versioning, serialisation (JSON, Avro, Protobuf), and backward/forward compatibility.
- Implement and maintain High Availability and Disaster Recovery for middleware: RabbitMQ mirrored/quorum queues, Redis Cluster and Sentinel, Azure Service Bus geo-redundancy and paired namespaces.
- Establish end-to-end observability: distributed tracing (OpenTelemetry), metrics (Prometheus/Grafana), and alerting for queue depth, consumer lag, connection pool saturation, and error rates.
- Collaborate with application development teams to review integration designs, message flow architectures, and service mesh configurations before production release.
- Own middleware security posture: TLS configuration, certificate management, RBAC/ACL policies on brokers, Managed Identity authentication for Azure Service Bus, and secrets management.
- Drive Infrastructure-as-Code adoption for middleware provisioning using Terraform, Bicep, or Ansible.
- Support CI/CD pipeline integration for automated deployment, configuration, and smoke-testing of middleware components.
- Lead incident response and post-incident reviews for Severity 1 middleware outages; produce actionable remediation plans.
- Mentor mid-level and junior engineers; produce architecture decision records (ADRs), runbooks, and operational documentation.
Requirements:
- 7+ years of software engineering or platform engineering experience, with 4+ years focused on middleware and integration platforms.
- Demonstrable senior-level expertise across RabbitMQ, Redis, and Azure Service Bus in production enterprise environments.
- Strong understanding of distributed systems fundamentals: eventual consistency, idempotency, at-least-once vs exactly-once delivery, and the two-generals problem.
- Experience designing and implementing event-driven microservices architectures and service integration patterns (EIP).
- Proficiency in at least one primary programming language commonly used for integration workloads: C# (.NET), Java/Kotlin, Python, or Go.
- Hands-on experience with Kubernetes or container orchestration for middleware workloads (Helm charts, operators).
- Infrastructure-as-Code experience with Terraform, Bicep, or Ansible for middleware provisioning.
- Strong observability skills: distributed tracing with OpenTelemetry, metrics with Prometheus/Grafana, and structured logging.
- Experience with secure middleware configuration: TLS/mTLS, certificate rotation, secrets management (Azure Key Vault, HashiCorp Vault).
- Proven ability to lead technical initiatives, produce architectural documentation, and mentor engineers.
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