Top Java Developer Jobs in Baltimore, MD

Lead development of scalable Java backend applications and high-availability cloud services. Design architectures, REST APIs, databases, caching systems, and distributed session infrastructure. Mentor engineers, drive technical initiatives, address performance and scalability challenges, and uphold quality and automation practices for endpoint management products.

Develop advanced Java analytics that transform complex data into actionable information. Collaborate with mission stakeholders to define analytical requirements, build innovative software capabilities, integrate solutions into customer platforms, and analyze diverse data sources to uncover relationships and address information gaps. Design, test, debug, integrate, and maintain complex software applications while supporting mission objectives.

Develop and integrate Java-based web applications using Java EE, Spring, JavaScript, HTML, CSS, XML, SQL, and web services. Work with application servers, build and deployment tools, source control, code-quality platforms, and frameworks including WildFly, Tomcat, Jenkins, Maven, and Nexus. Implement web services and microservices using technologies such as JAX-WS, Apache CXF, JAXB, and WS-Security, while supporting web application design and integration.

Develop and maintain enterprise full-stack applications using Java, Spring Boot, Angular, and PostgreSQL. Responsibilities include building microservices and REST APIs, optimizing databases, modernizing frameworks, managing Docker-based deployments and AWS infrastructure, troubleshooting systems, and supporting DevOps automation. The engineer will collaborate across teams, participate in code reviews, maintain documentation, and deliver secure, scalable applications for mission-critical government operations.

Develop and adapt Java software applications and services for deployment across multiple customer environments. Remove customer-specific dependencies, abstract configurations, and build interfaces for authorization workflows and key management. Contribute across client applications, portal and proxy services, and key management components while collaborating on planning, implementation, testing, troubleshooting, and defect resolution. The role requires deep Java, JavaScript, Kubernetes, Agile, encryption, and software development experience, plus an active TS/SCI clearance with polygraph.

Develop and deploy mission-critical software within a SAFe Agile and DevOps environment. Responsibilities include architecting server-side Java business logic, developing user interfaces, applying TDD and automation, integrating databases and application servers, and supporting secure systems engineering. The role requires collaboration, requirements decomposition, testing, continuous integration, and independent task prioritization while working with technologies including Java, Python, C/C++, SQL, Linux, Windows, and enterprise testing tools.

Designs, develops, and maintains tools and services supporting Atlassian Jira and Confluence. Collaborates with developers, system administrators, project managers, and mission customers to deliver integrations and streamline workflows. Develops automation scripts, applies Linux administration and software development practices, builds CI/CD pipelines, uses Ansible and Docker, manages source code with Git, documents system changes, and supports mission applications in Linux environments.

Develop and maintain software solutions supporting U.S. government missions. Responsibilities include Java development, requirements gathering, documentation, workflow support, problem solving, and collaboration using tools such as Confluence and Jira. Desired experience includes AWS, Maven, Git, GitLab, MapReduce, JUnit, Python, Linux, streaming capabilities, and AI. The position requires an active Top Secret/SCI clearance with a favorable polygraph.

Develop software using AWS managed services and technologies including Hadoop, Accumulo, Terraform, Java, and Python. The engineer will support mission-critical U.S. government programs, innovate solutions, and deliver software within projects of similar scope and complexity. The role requires extensive software engineering experience, a relevant bachelor’s degree or equivalent experience, and an active Top Secret/SCI clearance with a favorable polygraph.

Develop and maintain software solutions supporting national security missions. The engineer will contribute to daily software development responsibilities, innovate on customer-focused solutions, and work with Python, Kotlin, Java, Terraform, Elasticsearch/OpenSearch, and AWS. The role requires a Top Secret/SCI clearance with a favorable polygraph and U.S. citizenship.

Develop and enhance software supporting U.S. government missions using Java, MapReduce, cloud technologies, GhostMachine, and QTA. The role requires extensive software engineering experience, a bachelor's degree or equivalent experience, and an active Top Secret/SCI clearance with a favorable polygraph. This is a direct-hire position with no third-party staffing firms accepted.

Maintains, troubleshoots, upgrades, and integrates containerized applications deployed in Kubernetes and Linux environments. Develops software and automation using Python, Java, Bash, PHP, and Ansible; manages CI/CD workflows with GitLab and source control with Git. Supports mission services, documents configurations and system changes, assists external customers, and may provide training. Requires extensive COTS/GOTS integration experience and an active Top Secret/SCI clearance with favorable polygraph.

Develop and maintain software using AWS managed services and technologies including Hadoop, Accumulo, Terraform, Java, and Python. The engineer will deliver solutions supporting U.S. government national security missions, collaborate on projects of similar scope and complexity, and continuously innovate. The role requires a current Top Secret/SCI clearance with favorable polygraph, U.S. citizenship, a bachelor’s degree or equivalent experience, and significant software engineering experience.

Develops and maintains Linux-based tools and services supporting products such as GitLab, Artifactory, MinIO, Jupyter, and SPARTANDESK. Builds automation scripts, Java applications, CI/CD pipelines, infrastructure-as-code workflows, and containerized services. Collaborates with developers, system administrators, project managers, and mission customers to integrate systems, document configurations, sustain applications, and improve productivity. Requires an active Top Secret/SCI clearance with favorable polygraph and U.S. citizenship.

Develop and maintain software supporting U.S. government mission needs using Python, Kotlin, Java, Terraform, Elasticsearch/OpenSearch, and AWS. The engineer will assist with daily software engineering responsibilities, innovate solutions, and contribute to projects of similar scope and complexity. The role requires a current Top Secret/SCI clearance with favorable polygraph, U.S. citizenship, seven years of software engineering experience, and a relevant bachelor’s degree or qualifying experience substitution.

Provides L3/L4 support and develops Java solutions integrated with IBM i/AS400 systems. Responsibilities include incident resolution, root cause analysis, architecture and solution design, application enhancements, project delivery, code reviews, mentoring, documentation, and stakeholder collaboration. The role uses ServiceNow and JIRA within ITIL processes and requires participation in on-call rotations.

Develop and maintain Java and Spring microservices using Docker and Kubernetes. Monitor systems with Grafana and Prometheus, manage code with Git, and support mission-critical government software. The role also involves debugging, documentation, Agile collaboration, and potentially CI/CD, data indexing, and dataflow management. Applicants must hold an active Top Secret/SCI clearance with favorable polygraph and have 20 years of relevant software engineering experience.

Develop and maintain complex full-stack software systems supporting mission-critical environments. Responsibilities include architecting scalable solutions, processing large data sets, optimizing performance, building reusable components, collaborating with stakeholders, mentoring developers, and supporting the full software development lifecycle from design through deployment and sustainment.

Develop backend software and contribute to UI development for mission-focused government programs. The role requires building, improving, and supporting software solutions using MongoDB, Scala, Java, and AWS while collaborating on projects of similar scope and complexity. Candidates must hold an active Top Secret/SCI clearance with a favorable polygraph and be U.S. citizens.

Develop and maintain Java software for a mission analytics platform. Build Docker containers, create Helm charts, manage Kubernetes deployments, use Terraform, update code, and support fellow developers. The role requires extensive software engineering experience, a bachelor’s degree or equivalent experience, and an active Top Secret/SCI clearance with a favorable polygraph.

Develop scalable backend Java applications, REST APIs, and services in Linux/Unix environments. Collaborate within Agile teams through code reviews, debugging, problem solving, and technical design. Support complex customer mission solutions while applying software engineering best practices. Desired work includes backend architecture, distributed systems, CI/CD, automated testing, DevOps, cloud infrastructure, containers, and scripting.

Develop and maintain enterprise Java applications and production front-end interfaces. Build responsive, accessible UIs with JavaScript or TypeScript frameworks, integrate them with Spring Boot services through REST and event-driven APIs, and develop RESTful and SOAP services. Manage relational databases, optimize performance, apply secure coding practices, write tests, conduct code reviews, collaborate with QA, DevOps, UX, and product teams, and maintain technical documentation.

Build and operate core components of Elasticsearch’s distributed Serverless offering. Improve concurrent indexing, cluster coordination, data allocation, scalability, performance, and resilience across large distributed systems. Investigate and resolve complex concurrency, stability, and performance issues end to end, while collaborating across teams and supporting engineers with difficult technical problems.

Designs, builds, and operates core distributed systems for Serverless Elasticsearch. Responsibilities include improving concurrent indexing, cluster coordination, scalability, resilience, and performance across nodes and petabytes of data. The role investigates complex concurrency and stability issues, supports support engineers, owns operational resolutions, and leads projects across multiple engineers and teams.

Build Java and JavaScript services that ingest public health IT data, monitor FHIR endpoints, validate resources, and create reproducible compliance evidence cases. Responsibilities include developing REST services, AWS/DynamoDB data models, deterministic validators, endpoint monitoring, scheduling, retries, rate limiting, audit logging, testing, and documentation. The role requires protecting against collection of patient data, PHI, credentials, and tokens while supporting replayable and human-reviewed validation workflows.