Microservices Architects

Company Description

Opasa is a technology services company based in Melbourne, VIC, focused on enhancing technology capabilities to drive business value, innovation, and growth. The company provides services in key areas such as Data/AI, Cloud, Cyber Security, and Digitization of customer journeys and business processes. Opasa is known for its expertise in solving complex IT challenges and supporting strategic business goals.

Job Location: Melbourne, Australia

Preferred only Australia Work permit, student Visa holders, and PR, AU citizens with full working rights.

Packages starts: AUD 120,000 plus superannuation

Job type: WFH (If any Client meetings need to visit Clients offices)

Engagement: Full time permanent role

We are looking for a microservices architect with deep technical expertise in designing and implementing large-scale, event-driven, real-time systems. The role requires strong hands-on knowledge of containerised platforms (Kubernetes, OpenShift), messaging and event streaming (Kafka), API management (WSO2), distributed data (Couchbase), and traffic management (F5). The ideal candidate will have proven experience building high-throughput, low-latency, fault-tolerant architectures in mission-critical environments.

Key Responsibilities

• Design and document microservices architectures, including service boundaries, data flows, integration patterns, and event-driven topologies.
• Define and enforce standards for containerised deployments on OpenShift/Kubernetes, including resource optimization, scaling policies, and resilience patterns.
• Architect event streaming solutions using Kafka (topics, partitions, schema registry, stream processing, event sourcing, replay).
• Implement robust API management and gateway patterns with WSO2, including authentication, authorization, rate limiting, and observability.
• Define caching and persistence strategies using Couchbase, ensuring low-latency reads/writes in distributed environments.
• Work with F5 load balancers to implement secure, high-performance ingress, service routing, and SSL/TLS offloading.
• Establish observability standards (metrics, logs, traces) using tools such as Prometheus, ELK/EFK, or OpenTelemetry.
• Collaborate with DevOps engineers to implement automated CI/CD pipelines, canary releases, and blue-green deployments.
• Mentor developers and engineers on microservices design principles, distributed systems patterns, and performance tuning.
• Perform technical reviews, troubleshooting, and root-cause analysis of production issues.

Required Technical Skills

• Expert-level knowledge of microservices patterns (saga, CQRS, event sourcing, sidecar, service mesh).
• Hands-on experience with Kubernetes/OpenShift, Helm, Operators, and cluster security.
• Advanced Kafka skills (producer/consumer tuning, partitioning strategies, Kafka Streams, Connect, schema evolution).
• Strong background in API management and gateway technologies (preferably WSO2) including OAuth2.0, JWT, and service mediation.
• Experience designing with NoSQL stores (Couchbase preferred) in distributed, high-availability clusters.
• Networking and traffic management knowledge (F5 LTM/GTM, ingress controllers, DNS).
• Strong understanding of resilience and fault tolerance techniques: circuit breakers, retries, bulkheads, idempotency.
• Proficiency in at least one backend programming language (C++, Go, or similar).
• Familiarity with service mesh (Istio, Linkerd) and distributed tracing (Jaeger, Zipkin).

Desirable

• Experience with real-time analytics and stream processing frameworks (Flink, Spark Streaming).
• Background in DevSecOps practices: security scanning, secrets management, policy-as-code.
• Knowledge of performance/load testing at scale (JMeter, Gatling).