Back-End Java Developer Senior - Lumen Solutions Group, Inc.

Position Title: Back-End Java Developer Senior

Analysis and Design Support:

• Participate in client discussions to support technical analysis on business requirements and priorities.
• Perform the analysis, design, documentation, implementation, and maintenance of large/complex IT solutions projects related to passenger rail transportation systems.
• Conduct detailed business analysis to architect & design IT solutions that meet functional and technical requirements.
• Document and deliver sizing, external design, detail design, and other documents as required by the project.

Application Development:

• Design, develop, test, and implement business-critical, cloud-native, enterprise-level services focusing on high availability and high performance.
• Develop and integrate Kafka streams for real-time data processing and event-driven architectures using Amazon Managed Streaming for Kafka (MSK).
• Develop and maintain technical documentation.

Production and Testing Support:

• Provide ongoing support, perform problem analysis and resolution.
• Employ Test Driven Development methodologies to create use-case scenarios and unit test cases.

Required Skills and Qualifications

Technical Expertise:

• Strong back-end development experience with Java v17+, including extensive use of the Spring and Spring Boot 3.x ecosystems.
• Experienced in REST and SOAP-based API development.
• Proficient in developing Data Access Layers (DAO) using Spring Data JPA, SQL, and Hibernate.
• Skilled in using build process automation tools like Gradle and Maven.
• Experienced in implementing CI/CD pipelines using tools such as Git, Atlassian BitBucket, and JIRA.

Testing and Methodology:

• Solid experience with Test Driven Development and Behavior Driven Development, using tools such as Junit, Mockito, PowerMock, Cucumber, and Cypress.
• Understanding of the Twelve-Factor Application Methodology.

Cloud and Security:

• Hands-on experience with cloud-native design, development, and delivery using AWS technologies like EC2, S3, Lambda, SQS, SNS, API Gateway, RDS/Aurora, and others.
• Knowledge of application security vulnerabilities and mitigation techniques.

Soft Skills:

• Excellent oral and written communication skills.
• Strong analytical thinker with the capability to troubleshoot and resolve intricate issues.

Education and Experience :

• Bachelor s degree in Computer Science, Systems Engineering, or a related technical field, or an equivalent combination of education and 7+ years of relevant work experience.

Nice-to-Have Skills

• Knowledge of Electronic Data Interchange (EDI) systems and processes.
• Familiarity with AWS Step Functions and other advanced AWS services.
• Ability to work effectively under deadlines in an agile delivery environment, including experience with SAFe 6.x.

***Lumen and / or its clients will not provide equipment (Laptop, monitor, etc.) to the selected contractor. The contractor must have their own equipment. Access to a virtual desktop set up (software) will be provided by Lumen s client, allowing the user access to the required systems and technology.***

Lumen Solutions Group Inc. is an Equal Opportunity Employer and does not discriminate in employment on the basis of Minority/Gender/Disability/Religion/LGBTQI/Age/Veterans.