Principal Software Engineer

We are seeking a hands-on Principal Software Engineer to design, develop, and modernize enterprise applications supporting SSA. The ideal candidate brings strong technical leadership and expertise in Java, Spring Boot, Angular/React, AWS, OpenShift, web services, and Agile development., * Design and develop applications from functional requirements using Twelve-Factor App principles.

• Build responsive, accessible user interfaces and reusable web components using Angular, React, TypeScript, JavaScript, HTML, and CSS.
• Develop web interfaces that comply with Section 508 accessibility requirements and browser compatibility standards.
• Design and implement microservices and RESTful APIs using Java and Spring Boot.
• Develop and maintain enterprise batch applications using Spring Batch and JSR 352, with job scheduling through Control-M.
• Build and maintain SOAP web services using JAX-WS, Apache Axis, and WSDL, including WS-Security integration with IBM DataPower, WS-I interoperability, and MTOM/SOAP with Attachments.
• Develop data access layers for IBM Db2 and PostgreSQL using JPA, Hibernate, and Spring Data across z/OS, Linux, and other environments.
• Support cloud deployments, containerization, and CI/CD pipelines using AWS, OpenShift, Docker, Jenkins, Git, and Bitbucket.
• Improve application throughput, scalability, and response times through asynchronous processing, caching, load balancing, and efficient resource utilization.
• Develop automated unit and integration tests using JUnit, Mockito, PowerMock, Cucumber, and Gherkin.
• Create proofs of concept, reusable templates, architecture documentation, and UML diagrams using tools such as Visio and Confluence.
• Collaborate with business analysts, QA engineers, project managers, and customer stakeholders to deliver technical solutions.
• Lead technical discussions, recommend emerging technologies, and improve architecture, code quality, development standards, and delivery processes.
• Provide hands-on technical leadership and mentor junior and mid-level developers.

• Bachelor’s degree in Computer Science, Mathematics, Engineering, or a related field. A master’s or doctoral degree may substitute for a portion of the required experience.
• 10+ years of relevant software engineering experience, including Java, Spring Boot, and Angular/React development.
• Extensive hands-on experience designing and developing enterprise applications using Java and JEE technologies.
• Experience serving as a hands-on Technical Lead.
• Strong experience with modern JavaScript, TypeScript, single-page applications, responsive design, and frameworks such as Angular, React, and Express/Node.js.
• Experience designing and deploying cloud-native applications on AWS with PostgreSQL.
• Strong knowledge of Red Hat OpenShift, Docker, and platform-as-a-service environments.
• Experience designing high-throughput, low-latency systems that support large volumes of concurrent requests.
• Experience with Spring technologies, including IoC, MVC, Transactions, Security, Batch, JDBC, and Spring Boot.
• Experience with JPA, Hibernate, Db2, Tomcat, WebSphere, and Struts.
• Experience with REST and SOAP web services, XML, JSON, JAXP, JAXB, JAX-WS, Axis, Jersey, and CXF.
• Knowledge of authentication and security technologies, including LTPA, OAuth 2.0, and JWT.
• Experience with CI/CD and development tools such as Jenkins, Git/Bitbucket, Jira, Nexus, Maven, SonarQube, Fortify, and UrbanCode Deploy.
• Experience with automated testing, Test-Driven Development (TDD), and Behavior-Driven Development (BDD).
• Ability to identify and resolve application security vulnerabilities, code quality issues, and technical debt.
• Experience tuning application performance, including CPU and memory utilization, response times, and scalability in cloud environments.
• Experience working in Agile teams, including familiarity with Agile practices, terminology, and tools such as Agility.
• Strong communication, collaboration, and technical documentation skills.
• Willingness to work on-site in Woodlawn, MD, five days per week and attend an in-person final interview.
• Ability to obtain and maintain Public Trust clearance.

Preferred Qualifications

• Experience designing Kafka-based event-driven architectures, including producers, consumers, topics, partitions, consumer groups, replication, retention policies, and cluster monitoring.
• Experience with Kafka Connect and Kafka Streams for data ingestion and real-time processing.
• Understanding of emerging AI technologies and their application to system architecture, efficiency, and new capabilities.
• Experience implementing Section 508 accessibility standards for web applications.
• Experience writing technical white papers and system design documents.
• Prior experience supporting federal or state government IT projects.
• Exposure to low-code platforms such as ServiceNow, Pega, or Microsoft Power Platform.