Senior Java Developer

Karthik Consulting, LLC; United States; Remote; USD 125,000 - 130,000; Full time

Job summary

Karthik Consulting, LLC is seeking a Senior Java Developer to deliver hands-on engineering across the full SDLC using Spring Boot and DevSecOps practices.

The role emphasizes building secure, scalable Java web applications, integrating RESTful services, managing databases with Flyway, and implementing CI/CD pipelines with Jenkins and GitLab, including AI-enabled enhancements where appropriate. Remote work option is provided.

Qualifications

• Hands-on Java development in a web-based environment.
• Spring Boot, REST APIs, SQL and Flyway expertise.
• CI/CD using Jenkins or GitLab and DevSecOps practices.
• Production support and incident management.

Responsibilities

• Apply DevSecOps practices throughout delivery.
• Build/maintain CI/CD pipelines with Jenkins and/or GitLab.
• Implement automated testing and quality gates.
• Integrate security checks into pipelines.
• Manage database versioning with Flyway.
• Troubleshoot production issues and optimize performance.
• Support integration efforts and coordinate with security/ops/architecture.
• Participate in Agile ceremonies and maintain coding standards.
• Identify AI opportunities while meeting governance requirements.
• Design and develop Java web applications using Spring Boot.
• Develop and integrate RESTful APIs (and SOAP where needed).

Skills

Java

Spring Boot

REST APIs

CI/CD

DevSecOps

SQL

Troubleshooting

Communication

Autonomy

AI integration

Tools

Flyway

Jenkins

GitLab

Docker

Kubernetes

Job description

Position Summary

The Senior Java Developer will provide hands-on engineering across the full SDLC, applying modern Spring Boot development practices and DevSecOps delivery using Jenkins/GitLab CI/CD, with database change management via Flyway. This role also includes evaluating and integrating AI-enabled capabilities where appropriate and compliant.

Work Environment

Salary: $125-$130K

Role Type: Remote

Experience Level: 18+ years of hands-on software engineering and enterprise Java development experience

Program Context

USPS Postal Alert Notification System (PANS) enables real time data entry, analysis and response to emergency incidents both natural and man-made. The PANS system links several legacy systems within the USPS infrastructure to relate and more efficiently utilize data provided by these systems. It enables real time reporting of incidents; management decisions based upon data; enterprise wide archiving and acquisition of subject matter experts and resources; archival of incident data and response for later operational and financial audit; tracking of identified mail pieces so that affected employees/facilities assets are identified; key contact and response resource data for each facility; real time communications for incident involved teams; access to contract resources for incident management.

Key Responsibilities

• Apply DevSecOps practices throughout delivery.
• Build/maintain CI/CD pipelines using Jenkins and/or GitLab.
• Implement automated testing (unit/integration) and quality gates.
• Integrate security checks (SAST/DAST/dependency scanning) into pipelines
• Manage database versioning and deployments using Flyway (migrations, baseline strategy, rollback approach where applicable).
• Troubleshoot and resolve production issues; perform root-cause analysis; optimize performance and reliability.
• Support integration efforts (including COTS integration) and coordinate with security, operations, and architecture teams.
• Participate in Agile ceremonies, peer reviews, and technical documentation; uphold coding standards and best practices.
• Identify opportunities to incorporate AI (e.g., intelligent automation, summarization, anomaly detection) while meeting USPS/ security governance requirements.
• Design, develop, test and maintain Java web applications using Spring Boot and related frameworks.
• Develop and integrate RESTful APIs (and SOAP where needed), ensuring secure and reliable service communication.

Qualifications

Minimum Qualifications:

• Senior-level Java Experience: Hands-on experience in Java development within a web-based environment.
• Strong Technical Skills with:
  • Spring Boot (building services, configuration, profiles, security patterns)
  • REST APIs and service integration
  • Relational databases and SQL
  • Flyway for database migration and version control
  • Jenkins and/or GitLab for CI/CD
• DevSecOps Experience: Proven experience including automated build/test/deploy practices and secure coding practices.
• Production Support: Experience supporting applications in production, including incident support and operational stability.
• Communication & Autonomy: Strong written/verbal communication skills and the ability to work independently on complex initiatives.

Preferred Qualifications:

• 18+ years of development hands on experience.
• Experience with AI-enabled application features or integrating AI services/APIs in an enterprise setting.
• Experience with COTS integration and enterprise modernization efforts.
• Experience in regulated environments (government/federal) with security/compliance constraints.
• Familiarity with containerization and cloud-ready deployment patterns (Docker/Kubernetes).
• USPS/Postal domain experience.