CyberX Info System · 5 hours ago
Java Full Stack Developer
Chicago, IL
Contract
Onsite
Senior Level, Lead/Staff
8+ years expCyberX Info System is seeking an experienced Full Stack Developer with strong expertise in Core Java and advanced Spring technologies. The role involves building high-performance backend microservices and scalable front-end applications, contributing to system design, and delivering enterprise-grade solutions.
BlockchainDigital MarketingGraphic DesignInformation TechnologyMobile AppsSEOSoftwareWeb DesignWeb Development
Hiring Manager
Irfan Ahmad
Responsibilities
Develop, enhance, and maintain Spring Boot microservices using Core Java and advanced Spring features
Implement Reactive Programming using Spring WebFlux, Reactor, and non-blocking I/O patterns
Build scalable REST APIs, asynchronous communication flows, and event-driven components
Integrate and work extensively with Kafka for event streaming, pub/sub, and message processing
Design and implement distributed systems with high availability and resiliency
Develop responsive, user-friendly UI applications using React / Angular / Vue (based on project needs)
Integrate frontend applications with backend APIs and microservices
Ensure modular, reusable components and consistent design patterns
Deploy and run microservices on major cloud platforms: AWS / Azure / GCP
Utilize Docker, Kubernetes, Helm for containerization and orchestration
Build and maintain CI/CD pipelines (Jenkins, GitHub Actions, Azure DevOps, GitLab)
Implement observability—logging, monitoring, tracing—using ELK, Prometheus/Grafana, Splunk, or Cloud-native tools
Design and optimize Cassandra data models, queries, and partition strategies for large-scale datasets
Use Spring Data Cassandra (Reactive) to build reactive persistence layers
Integrate additional data platforms like Redis, RDBMS, or NoSQL stores as needed
Contribute to design discussions and create scalable, secure microservices architecture
Follow 12-factor, cloud-native, and domain-driven design (DDD) principles
Apply security frameworks (OAuth2, JWT, Spring Security) across services and APIs
Write clean, well-tested code using JUnit, Mockito, Testcontainers, and contract testing
Participate in code reviews, architectural discussions, and pair programming
Work closely with product owners, architects, and cross-functional teams in an Agile environment
Qualification
Required
5–10+ years of hands-on experience in Core Java (Java 8–21)
Advanced-level expertise in Spring Boot, Spring Cloud, WebFlux, Reactive Streams
Strong experience building microservices with distributed systems and RESTful APIs
Hands-on experience with Kafka (producers, consumers, streams, schema registry)
Solid knowledge of Cassandra with performance tuning and data modeling
Front-end development experience using React / Angular / Vue
Strong understanding of concurrency, multithreading, and non-blocking programming models
Experience working with AWS, Azure, or GCP cloud architectures
Proficiency with Docker, Kubernetes, Git, CI/CD pipelines
Strong analytical, debugging, and problem-solving skills
Excellent communication and teamwork abilities
Self-driven and capable of leading full-stack solutions independently
Preferred
Knowledge of Kafka Streams, ksqlDB, or event-driven microservice patterns
Experience with GraphQL, API Gateways (Kong, Apigee, or Spring Cloud Gateway)
Cloud or Java certifications (AWS, GCP, OCI, Java, K8s)
Prior experience with serverless or micro-frontend architectures
Company
CyberX Info System
Cyberx Info System's unique brand differentiation is our relentless focus on customer-centric mobile app development.
201-500 employees
Funding
Current Stage
Growth StageLeadership Team
Rachel Noor
Company Owner
Company data provided by crunchbase