Company Description

Lumen Solutions Group Inc. is a technology consulting Services company based in Florida. We provide a wide array of experienced business and IT professionals supporting clients from solution design to implementation and support. We specialize in professional IT consulting services, IT Staffing, Business/IT Strategy, Business Process Blueprints, Enterprise Architecture, and Enterprise Transformation.

Job Role: Senior Java Backend Developer

Job Location: Washington, DC. (Remote)

Job Type: Long Term Contract

Job Summary

About the Role We are seeking an experienced Senior Java Backend Developer to design, build, and maintain complex enterprise-grade web applications. This role requires strong backend expertise, hands-on experience with Kafka, and deep knowledge of AWS cloud technologies. You will collaborate closely with Product Owners and Architects to deliver scalable, high-performance solutions.

Key Responsibilities

• Design, build, and maintain complex web applications with a focus on backend development.
• Write, maintain, and optimize high-quality Java code following best practices.
• Perform Kafka configuration and administration.
• Develop clean, efficient, and scalable backend solutions ensuring performance and code quality.
• Conduct code reviews, provide constructive feedback, and drive continuous team improvement.
• Create and maintain data models to ensure data integrity across enterprise systems.
• Implement complex data operations supporting backend development standards.
• Collaborate with Product Owners to break down requirements and align with project goals.
• Work closely with Architects to ensure alignment with overall solution design.

Minimum Qualifications

• Bachelor’s degree in a related field or equivalent experience.
• 8+ years of hands-on experience in Java development (Senior level).
• 3+ years of experience working with Kafka - (Kafka Admin experience).
• Strong experience with messaging and data-streaming platforms.
• Proven experience designing and developing applications using AWS services, including: S3, Lambda, Elastic Beanstalk SQS, SNS, API Gateway EC2, Data Pipeline, CloudWatch CodeCommit, CloudFormation.
• Hands-on experience with Angular, Java, J2EE, Spring, and REST APIs.
• Strong expertise in AWS cloud ecosystem including: Lambda, Kinesis, DynamoDB/Aurora, Redshift, Node.js.
• Solid experience with Kafka (Kafka Admin experience is a plus).
• Strong background in data modeling and database design.

Preferred Skills

• Experience in building scalable, high-performance distributed systems.
• Strong understanding of microservices architecture.
• Familiarity with modern DevOps practices and CI/CD pipelines.

Lumen Solutions Group Inc is an equal opportunity employer. All qualified applicants will be considered for employment without regard to any legally protected status.