Aptimized · 13 hours ago
Senior Java Application Developer
Washington, DC
Contract
Onsite
Senior LevelAptimized is seeking a Senior Java Application Developer to support the modernization of legacy systems. The role involves upgrading systems from Java/JDK 8 to Java/JDK 21 and requires expertise in various Java technologies and tools for a successful migration.
ConsultingE-CommerceEnterprise Resource Planning (ERP)Information TechnologySecurity
No H1B
Security Clearance RequiredU.S. Citizen OnlyHiring Manager
Anthony De Stefano
Responsibilities
Support up to 3 legacy mission-essential systems in the upgrade from Java/JDK 8 to Java/JDK 21 technology and beyond with operations and maintenance
Leverage knowledge of Object-Oriented Programming, software development methodologies, and the Java language to seamlessly transition our systems to the desired version
Ensure smooth and successful migration using technologies such as Servlet, JSP, Tag Library, JavaBean, and SQL Server database
Modernize the user interface and enhance the overall user experience using tools like Maven, JavaScript, jQuery, Knockout.js, HTML, and CSS
Be well-versed in Windows authentication, SSL, session management, and Single Sign-On (SSO) technologies
Familiarity with RESTful web services, JSON parsing, and multipart/form-data file management is highly valued
Expertise in vulnerability remediation techniques such as CSRF, SQL injection, XSS, and reflection attacks
Previous experience successfully migrating Java applications across multiple major versions
Knowledge of common pitfalls and solutions when upgrading Java applications
Understanding of deprecated features and their modern replacements
Experience identifying and resolving compatibility issues
Proficiency with build tools (Maven/Gradle)
Experience updating build pipelines to accommodate newer Java versions
Dependency management skills and handling library compatibility challenges
Experience with continuous integration/continuous deployment (CI/CD) pipelines (Azure DevOps, GitLab)
Experience with application performance monitoring tools and techniques
Knowledge of log management and analysis systems
Ability to create and maintain runbooks for operational procedures
Proficiency in identifying and resolving production issues
Understanding of JVM tuning and garbage collection optimization
Experience implementing and maintaining automated health checks
Knowledge of security patch management and vulnerability assessment
Version control with Git
Familiarity with application servers (e.g., Tomcat, WebSphere, WildFly)
Knowledge of common enterprise integrations (SQL Server databases, messaging systems)
Experience with containerization technologies (Docker, Kubernetes) is a plus
Excellent written and verbal communication skills
Strong problem-solving abilities and attention to detail
Ability to document migration processes, decisions, and technical debt
Self-motivated with the ability to work independently
Collaborative approach when working with existing development teams
Strong time management skills to deliver migration within schedule constraints
Experience providing on-call support and incident management
Qualification
Required
US citizenship required per government contract
Must be able to obtain Public Trust clearance
Java experience
Strong aptitude in modernizing systems
Support up to 3 legacy mission-essential systems in the upgrade from Java/JDK 8 to Java/JDK 21 technology and beyond
Expertise in technologies such as Servlet, JSP, Tag Library, JavaBean, and SQL Server database
Proficiency in tools like Maven, JavaScript, jQuery, Knockout.js, HTML, and CSS
Well-versed in Windows authentication, SSL, session management, and Single Sign-On (SSO) technologies
Familiarity with Spring, Spring MVC, and ORM technologies like Hibernate and JPA
Familiarity with RESTful web services, JSON parsing, and multipart/form-data file management
Expertise in vulnerability remediation techniques such as CSRF, SQL injection, XSS, and reflection attacks
Previous experience successfully migrating Java applications across multiple major versions
Knowledge of common pitfalls and solutions when upgrading Java applications
Understanding of deprecated features and their modern replacements
Experience identifying and resolving compatibility issues
Proficiency with build tools (Maven/Gradle)
Experience updating build pipelines to accommodate newer Java versions
Dependency management skills and handling library compatibility challenges
Experience with continuous integration/continuous deployment (CI/CD) pipelines (Azure DevOps, GitLab)
Experience with application performance monitoring tools and techniques
Knowledge of log management and analysis systems
Ability to create and maintain runbooks for operational procedures
Proficiency in identifying and resolving production issues
Understanding of JVM tuning and garbage collection optimization
Experience implementing and maintaining automated health checks
Knowledge of security patch management and vulnerability assessment
Version control with Git
Familiarity with application servers (e.g., Tomcat, WebSphere, WildFly)
Knowledge of common enterprise integrations (SQL Server databases, messaging systems)
Experience with containerization technologies (Docker, Kubernetes)
Excellent written and verbal communication skills
Strong problem-solving abilities and attention to detail
Ability to document migration processes, decisions, and technical debt
Self-motivated with the ability to work independently
Collaborative approach when working with existing development teams
Strong time management skills to deliver migration within schedule constraints
Experience providing on-call support and incident management
Company
Aptimized
APTIMIZED provides application support, technology optimization and consulting services.
Founded in 2013
51-200 employees
Funding
Current Stage
Growth StageCompany data provided by crunchbase