Java Developer / OneStream, Associate (Part Time - Regular)

• Design, develop, test, maintain, and enhance Java-based enterprise applications supporting NIH business operations.
• Develop scalable backend services using Java 11+ (or higher), Spring Boot, and modern software engineering practices.
• Modernize legacy applications by migrating business functionality into maintainable Java architectures.
• Participate throughout the SDLC including analysis, design, development, testing, deployment, production support, and continuous improvement.
• Develop reusable application components and shared libraries to improve maintainability and reduce technical debt.

• Participate in application architecture discussions and contribute to technical solution designs aligned with enterprise standards.
• Collaborate with Enterprise Architecture, Database Administrators, DevSecOps, and IT Security teams to ensure solutions meet security, scalability, and performance requirements.
• Translate business requirements into technical specifications, user stories, and implementation plans.
• Support technical design documentation and architecture artifacts throughout project delivery.

• Design and develop RESTful APIs and backend services supporting enterprise applications.
• Integrate Java applications with databases, cloud services, third-party platforms, and internal enterprise systems.
• Develop and maintain Java integration services connecting enterprise applications with financial, budgeting, reporting, HR, and other enterprise business platforms.
• Design and implement secure RESTful APIs and integration services supporting enterprise platforms such as OneStream, ERP systems, HR applications, ServiceNow, Salesforce, or other enterprise business systems where applicable.
• Develop middleware, microservices, and data synchronization services that exchange information between Java applications and enterprise platforms using REST APIs, SOAP services, JSON/XML, messaging technologies, scheduled batch processing, or ETL frameworks.
• Troubleshoot, optimize, and maintain enterprise integrations to ensure high availability, performance, scalability, and data integrity across connected business applications.
• Develop efficient SQL queries, stored procedures, and data access layers using JPA/Hibernate.
• Support secure authentication and authorization mechanisms for enterprise applications.

• Support automated CI/CD pipelines using Jenkins, GitHub Actions, GitLab CI, or similar DevOps platforms.
• Utilize Git for source code management, branching strategies, code reviews, and release management.
• Follow enterprise configuration management, change management, and release governance processes.
• Collaborate with DevOps engineers to automate deployments and improve software delivery efficiency.

• Develop unit tests, integration tests, and participate in regression and performance testing activities.
• Support User Acceptance Testing (UAT) and defect resolution throughout release cycles.
• Participate in peer code reviews to maintain coding standards and software quality.
• Maintain technical documentation, design documentation, API documentation, and operational support guides.
• Support knowledge transfer and documentation for production support teams.

• Develop applications following secure coding practices and federal cybersecurity requirements.
• Collaborate with IT Security teams to remediate vulnerabilities identified through code scanning and security assessments.
• Support RMF documentation, vulnerability remediation, and ATO readiness activities where applicable.
• Ensure applications comply with organizational security policies and data protection requirements.

• Support application deployments and post-production validation activities.
• Troubleshoot application defects, production issues, and performance bottlenecks.
• Participate in root cause analysis and implement corrective actions.
• Support production stabilization during hyper-care periods following major releases.
• Provide technical support and knowledge transfer to operations and maintenance teams.

• Previous NIH experience (strongly desired)
• 3+ years professional experience developing enterprise Java applications.
• 3+ years experience using Java (Java 8 or higher; Java 11+ preferred).
• 2+ years experience developing applications using Spring Framework and Spring Boot.
• 2+ years experience developing RESTful APIs and backend services.
• 2+ years experience using JPA/Hibernate or similar ORM frameworks.
• 2+ years experience writing SQL queries and working with relational databases such as Oracle, SQL Server, PostgreSQL, or MySQL.
• 2+ years experience working in Agile/Scrum or SAFe environments.
• 1+ year experience supporting applications within regulated environments requiring SDLC documentation, testing evidence, and governance (Federal preferred).
• Experience integrating Java applications with enterprise platforms such as OneStream , ServiceNow, or similar enterprise business applications is highly desirable.
• Experience designing and developing API-based integrations using REST, SOAP, JSON, XML, messaging technologies (Kafka, RabbitMQ, JMS), or ETL/data integration frameworks.
• Experience supporting enterprise financial systems, budgeting, planning, reporting, or Enterprise Performance Management (EPM) solutions through Java-based integrations is preferred.
• Education: Bachelor's degree in Computer Science, Software Engineering, Information Systems, Information Technology, or related technical discipline (or equivalent experience).
• Certification (Preferred) Oracle Certified Professional Java Developer (OCP) Spring Professional Certification AWS Certified Developer – Associate Microsoft Azure Developer Associate Security+ (preferred for federal environments) Certified Scrum Developer (CSD) or Scrum certification

• AWS Certified Developer – Associate

• Security+ (preferred for federal environments)
• Certified Scrum Developer (CSD) or Scrum certification
• Technical Skills (Required) Java Development Strong experience with Java 8/11+ Object-Oriented Programming (OOP) Exception handling, collections, concurrency, multithreading Performance tuning and optimization Spring Framework Spring Boot Spring MVC Spring Data JPA Spring Security Dependency Injection (IoC) API and Backend Deployment RESTful API development JSON/XML processing API security OAuth2, JWT authentication Backend service integration Enterprise application integration REST/SOAP Web Services Enterprise middleware and API integration Database Development Oracle SQL Server PostgreSQL MySQL SQL optimization Stored procedures JPA/Hibernate Cloud and DevSecOps Git GitHub GitLab Jenkins Maven Gradle Docker Kubernetes (preferred) CI/CD pipeline support Testing and Quality Assurance JUnit Mockito Integration Testing Functional Testing Performance Testing SonarQube Static Code Analysis Security and Compliance Secure Coding Practices (OWASP) Vulnerability remediation RMF awareness Section 508 awareness (where applicable) Authentication and authorization best practices Enterprise Integration Technologies REST APIs SOAP Web Services JSON/XML Messaging technologies (Kafka, RabbitMQ, JMS) ETL/Data Integration API Gateway technologies OAuth2/OpenID Connect Enterprise Platforms (Preferred) OneStream integration ( Highly Desired) ServiceNow
• Java Development Strong experience with Java 8/11+ Object-Oriented Programming (OOP) Exception handling, collections, concurrency, multithreading Performance tuning and optimization
• Strong experience with Java 8/11+

• Exception handling, collections, concurrency, multithreading
• Performance tuning and optimization
• Spring Framework Spring Boot Spring MVC Spring Data JPA Spring Security Dependency Injection (IoC)
• Spring Boot
• Spring MVC

• Spring Security

• API and Backend Deployment RESTful API development JSON/XML processing API security OAuth2, JWT authentication Backend service integration Enterprise application integration REST/SOAP Web Services Enterprise middleware and API integration
• RESTful API development
• JSON/XML processing
• API security
• OAuth2, JWT authentication
• Backend service integration
• Enterprise application integration

• Enterprise middleware and API integration
• Database Development Oracle SQL Server PostgreSQL MySQL SQL optimization Stored procedures JPA/Hibernate
• Oracle
• SQL Server
• PostgreSQL
• MySQL
• SQL optimization
• Stored procedures
• JPA/Hibernate
• Cloud and DevSecOps Git GitHub GitLab Jenkins Maven Gradle Docker Kubernetes (preferred) CI/CD pipeline support
• Git
• GitHub
• GitLab
• Jenkins
• Maven
• Gradle
• Docker
• Kubernetes (preferred)
• CI/CD pipeline support
• Testing and Quality Assurance JUnit Mockito Integration Testing Functional Testing Performance Testing SonarQube Static Code Analysis
• JUnit
• Mockito
• Integration Testing
• Functional Testing
• Performance Testing
• SonarQube

• Security and Compliance Secure Coding Practices (OWASP) Vulnerability remediation RMF awareness Section 508 awareness (where applicable) Authentication and authorization best practices

• Vulnerability remediation
• RMF awareness
• Section 508 awareness (where applicable)
• Authentication and authorization best practices
• Enterprise Integration Technologies REST APIs SOAP Web Services JSON/XML Messaging technologies (Kafka, RabbitMQ, JMS) ETL/Data Integration API Gateway technologies OAuth2/OpenID Connect
• REST APIs

• JSON/XML
• Messaging technologies (Kafka, RabbitMQ, JMS)
• ETL/Data Integration
• API Gateway technologies
• OAuth2/OpenID Connect
• Enterprise Platforms (Preferred) OneStream integration ( Highly Desired) ServiceNow
• OneStream integration ( Highly Desired)
• ServiceNow
• Preferred Skills Microservices architecture Event-driven architecture Cloud-native application development AWS, Azure, or Google Cloud Platform Docker and Kubernetes Messaging technologies (Kafka, RabbitMQ, ActiveMQ)

supporting NIH, HHS, or other federal agencies Experience modernizing legacy Java applications Experience integrating Java applications with OneStream or other Enterprise Performance Management (EPM) platforms.

developing middleware, microservices, or ETL processes that synchronize data between Java applications and enterprise financial platforms Experience supporting financial planning, budgeting, forecasting, financial consolidation, reporting, or enterprise operational systems through Java-based integrations.

designing secure API integrations between Java applications and enterprise business systems using REST APIs, messaging technologies, or middleware frameworks.

Familiarity with enterprise financial data models, API-based integrations, and secure data exchange between Java applications and enterprise platforms.

Familiarity with AI-assisted development tools such as GitHub Copilot, Cursor, Claude Code, Codex, or similar to improve development productivity, code quality, documentation, and modernization efforts.

• Microservices architecture
• Event-driven architecture
• Cloud-native application development
• AWS, Azure, or Google Cloud Platform
• Docker and Kubernetes
• Messaging technologies (Kafka, RabbitMQ, ActiveMQ)
• Experience supporting NIH, HHS, or other federal agencies
• Experience modernizing legacy Java applications
• Experience integrating Java applications with OneStream or other Enterprise Performance Management (EPM) platforms.
• Experience developing middleware, microservices, or ETL processes that synchronize data between Java applications and enterprise financial platforms
• Experience supporting financial planning, budgeting, forecasting, financial consolidation, reporting, or enterprise operational systems through Java-based integrations.
• Experience designing secure API integrations between Java applications and enterprise business systems using REST APIs, messaging technologies, or middleware frameworks.
• Familiarity with enterprise financial data models, API-based integrations, and secure data exchange between Java applications and enterprise platforms.
• Familiarity with AI-assisted development tools such as GitHub Copilot, Cursor, Claude Code, Codex, or similar to improve development productivity, code quality, documentation, and modernization efforts.

The projected compensation range for this position is $43,27/hr to $49.04/hr benchmarked in the Washington, D.C. metropolitan area.

The salary range provided is a good faith estimate representative of all experience levels.

at LCG is determined by various factors, including but not limited to role, location, the combination of education/training, knowledge, skills, competencies, certifications, and work experience.

LCG offers a competitive, comprehensive benefits package which includes health insurance options (medical, dental, vision), life and disability insurance, retirement plan contributions, as well as paid leave, federal holidays, professional development, and lifestyle benefits.

Devoted to Fair and Inclusive Practices

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

If you are interested in applying for employment with LCG and need special assistance or an accommodation to apply for a posted position, contact our Human Resources department by email at hr@lcginc.com .

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