Java Backend Developer - MQ, Kafka Messaging Systems
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Responsibilities
- Design, implement, and optimize backend services handling high-volume data flows with strict performance and reliability requirements.
- Develop Java‑based components using modern frameworks (Spring/Spring Boot or equivalent).
- Build and maintain asynchronous and event‑driven workflows using messaging systems such as MQ, Kafka, or RabbitMQ.
- Implement performance tuning, profiling, and observability to support sub‑second latency and 99.99% availability goals.
- Drive solutioning and system designs for new features, integrations, and platform enhancements across distributed systems.
- Ensure service robustness through automated testing (unit, integration, load tests) and CI/CD workflows.
- Apply secure‑by‑design principles, including threat modeling, safe data handling, API hardening, and least‑privilege access.
- Implement and support authentication and authorization patterns (e.g., OAuth 2, mTLS, JWT, service‑to‑service auth).
- Participate in architecture reviews, offering technical leadership and mentorship to junior engineers.
- Diagnose and resolve complex production issues across infrastructure, code, and messaging layers.
- Enhance platform reliability via improved logging, monitoring, alerting, and operational tooling.
Required Qualifications
- 5+ years of hands‑on backend development experience in large‑scale, high‑throughput environments.
- Strong proficiency in Java (Java 8+, multithreading, concurrency libraries, performance optimization).
- Solid understanding of Linux fundamentals (filesystem, networking basics, shell operations, performance tools).
- Extensive experience with Message Queue systems (IBM MQ, Kafka, RabbitMQ, ActiveMQ, etc.).
- Deep knowledge of asynchronous programming, non‑blocking IO patterns, and event‑driven system design.
- Good understanding of modern network protocols, including HTTP/2 (multiplexing, header compression, flow control, performance benefits).
- Experience implementing and maintaining CI/CD pipelines and DevOps tooling, including Jenkins, Chef Infra/Chef Habitat, Terraform, and PCF CLI.
- Demonstrated ability to design scalable system architectures and evaluate design trade‑offs.
- Basic understanding of Authentication/Authorization concepts and secure communication patterns.
- Familiarity with containerization and orchestration (Docker, Kubernetes) is an asset.
- Excellent debugging, problem‑solving, and performance‑profiling skills.
Preferred Qualifications
- Experience in financial services, real‑time scoring, risk systems, or other low‑latency domains.
- Exposure to observability stacks (Splunk, Prometheus, Grafana, ELK).
- Knowledge of DevOps practices, automation, and additional IaC tools.
- Hands‑on understanding of reliability engineering (circuit breakers, retries, backpressure, failover strategies).
- Ability to lead complex technical initiatives and drive cross‑team alignment.
What We Look For
- A strong ownership mindset with a passion for delivering secure, high‑quality, and resilient services.
- Ability to influence architecture, mentor engineers, and uplift engineering standards.
- Strong communication skills and the ability to work in a fast‑paced, collaborative environment.
Experience Required: 8 years
Seniority Level: Mid‑Senior level
Employment Type: Full‑time
Job Function: Information Technology
Industries: IT Services and IT Consulting