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Urgent! Senior Java Developer Job Opening In USA, USA – Now Hiring SmarTek21

Senior Java Developer



Job description

About the Role We’re seeking a Senior Java Developer to design, optimize, and scale distributed backend systems.


You’ll work on complex, performance-critical services using modern Java and the Spring ecosystem.


This role is ideal for someone who thrives in cloud-native environments and enjoys solving challenging concurrency and scalability problems.


Key Responsibilities Design, develop, and maintain backend services using Java 11+ and Spring Boot .


Build and optimize microservices architectures with distributed tracing and circuit breakers.


Write high-performance, concurrent Java code using modern patterns (CompletableFutures, ExecutorService, Virtual Threads).


Integrate and optimize databases such as PostgreSQL, MySQL, Redis, and MongoDB.


Implement event-driven and message-based systems using Kafka or RabbitMQ .


Ensure observability through OpenTelemetry , Prometheus , and Grafana dashboards.


Deploy and maintain applications in Docker and Kubernetes environments with Helm.


Collaborate with DevOps to streamline CI/CD using Maven/Gradle, Jenkins, and ArgoCD.


Profile and tune the JVM for low latency and high throughput using JFR and async-profiler .


Participate in design reviews, provide mentorship, and uphold code quality standards.


Required Skills & Experience 8+ years of hands-on Java development experience.


Expert knowledge of Java 11+ features :



  • Streams, Lambdas, CompletableFutures, Virtual Threads.

  • Deep experience with the Spring ecosystem (Boot, Cloud, Security, WebFlux, Data JPA).
  • Strong grasp of microservices design patterns and distributed system principles.
  • Proficiency in container orchestration using Kubernetes and Helm.
  • Proven experience with messaging systems like Kafka or RabbitMQ.
  • Hands-on experience with monitoring and logging stacks (ELK, Prometheus, Grafana).
  • Familiarity with CI/CD pipelines and artifact management tools.
  • Nice to Have Experience with CQRS , event sourcing , or reactive programming .
  • Knowledge of service mesh (Istio, Linkerd) or service discovery (Consul, Eureka).
  • Familiarity with cloud environments (AWS, GCP, Azure).
  • This is a Remote (work from home) position.
  • For the individuals located in the United States Who We are...
  • SmarTek21, founded in 2006, is an innovative digital transformation leader dedicated to empowering organizations through design-led, data-centric solutions.
  • We believe that exceptional user experiences and intelligent data-driven insights are pivotal in shaping the future of business.
  • At the heart of our approach is Design-Led Engineering, where we combine strategic design principles with cutting-edge technology to create tailored solutions that deliver significant business outcomes.
  • Our commitment to accelerating digital transformation includes specialized expertise in Agile DevOps, Data Engineering and analytics, Testing Automation and support, and comprehensive Managed Application and Infrastructure Services.
  • We’ve evolved from our consulting and development roots into a full-spectrum service provider, integrating advanced technologies like Generative AI (GenAI) to facilitate our clients' seamless, transformative digital journeys.
  • A passion unites our dynamic team of technology visionaries and business strategists for innovation and excellence.
  • At SmarTek21, you'll join a collaborative environment dedicated to shaping the digital landscape and driving impactful results for organizations worldwide.
  • SmarTek21 is committed to fostering a diverse and inclusive environment.
  • We encourage applications from individuals of all backgrounds and experiences.
  • Powered by JazzHR

  • Required Skill Profession

    Computer Occupations



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