Top Senior 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.

Design, build, deploy, and support scalable Java microservices on AWS. Provide technical leadership, architectural direction, code reviews, troubleshooting, proof-of-concept development, and cross-functional collaboration. Work with high-throughput data, messaging systems, distributed architectures, observability, and AI-assisted development tools. Participate in on-call support, mentor engineers, lead architectural initiatives, and deliver reliable SaaS platform features.

Build scalable, API-first platform capabilities through manifest-driven development. Develop Java and Kotlin backend services and Python workers for third-party integrations, collaborate across engineering teams, participate in architecture reviews, and troubleshoot production systems using logs, metrics, and traces. The role requires expertise in highly scalable systems, object-oriented design, REST services, relational databases, responsive messaging, caching, and software quality practices.

Design and implement scalable backup software for endpoints, servers, and cloud applications. Develop Java and Kotlin services, optimize databases and queries, debug production systems, and resolve distributed-system performance issues. Contribute code, reviews, architecture discussions, documentation, and cross-team reliability initiatives. Mentor engineers and help deliver resilient products operating at large scale.

Lead development and architecture of highly scalable Java services supporting NinjaOne’s third-party patching catalog. Design high-availability systems, solve complex scalability and system-design challenges, improve quality and performance, collaborate cross-functionally, mentor engineers, and own technical initiatives. The role requires expertise in Java, RESTful APIs, Spring, relational databases, caching, asynchronous application design, and large-scale cloud systems.

Develop and architect scalable Java software for NinjaOne’s endpoint management platform. The role involves building high-availability services, leading technical initiatives, making architectural decisions, improving quality practices, collaborating cross-functionally, mentoring engineers, and addressing scalability, performance, and technical debt challenges.

Develop and scale backend patch-management software using Java and Kotlin for millions of endpoints. Implement enterprise software, design scalable systems, build REST services, work with relational databases and caching systems, and uphold rigorous testing and quality standards. Collaborate with AI workflow, server, platform, design, and product teams. React or Angular experience may support occasional frontend work.

Design and develop scalable, highly available software systems for NinjaOne’s IT Operations platform. Build Java and Kotlin applications, implement enterprise design patterns, optimize systems serving millions of endpoints, and contribute production code. Responsibilities include REST service development, relational database work, client-server messaging, caching, scalability improvements, and quality testing. The role collaborates with engineers to deliver reliable cloud services supporting worldwide operations.

Design, develop, and deliver mission-critical server-side and UI software within a SAFe DevOps environment. Use TDD/BDD and CI/CD to implement secure Java (and multi-language) solutions, integrate databases and services, and automate testing for high-assurance defense programs requiring an active TS/SCI with polygraph.

Develop advanced analytics in Java to transform complex data into actionable intelligence. Collaborate with mission stakeholders to define analytical requirements, build innovative capabilities, integrate solutions into customer platforms, analyze diverse data and metadata sources, identify relationships, address information gaps, and support national security missions.

Develop and deploy Java-based analytic software supporting target discovery and mission analytics. Collaborate with analysts and stakeholders to translate mission needs into automated workflows, rapidly prototype solutions, evaluate and integrate analytic capabilities, and support software through testing, documentation, operational deployment, and sustainment. Work within approved cloud architectures and perform design reviews, configuration management, unit testing, integration testing, debugging, and performance evaluation.

Develop and sustain a high-performance geospatial collaboration and intelligence reporting tool. Responsibilities include implementing mission-driven enhancements, maintaining existing code, troubleshooting application interfaces, testing, integration, and resolving production issues. The developer will work with Java, C/C++, scripting languages, databases, search platforms, REST services, and Linux. Participation in a rotating pager schedule is required for emergency 24/7 support.

Develop and sustain front-end interfaces for intelligence reporting and geospatial collaboration tools. Responsibilities include enhancing Section 508 accessibility, redeveloping user interfaces, integrating and troubleshooting application interfaces, and performing software development, testing, maintenance, and problem resolution using Java, GWT, PrimeFaces, Quarkus, HTML, CSS, and JavaScript.

Develop and maintain Linux-based tools and services supporting products including GitLab, Artifactory, MinIO, Jupyter, and SPARTANDESK. Build Java applications and Bash, Python, and PHP automation scripts; implement infrastructure as code with Ansible; manage CI/CD pipelines, Docker containers, Git workflows, and system documentation. Collaborate with developers, administrators, project managers, and mission customers to deliver integrations and sustain mission applications.

Develop and maintain software solutions supporting national security missions. The engineer will assist with daily software engineering responsibilities and contribute to timely, innovative solutions using Python, Kotlin, Java, Terraform, Elasticsearch/OpenSearch, and AWS. The role requires substantial experience on comparable programs, a relevant bachelor's degree or equivalent experience, and an active Top Secret/SCI clearance with a favorable polygraph.

Develop and support software solutions for national security missions. Responsibilities include Java software engineering, requirements gathering, workflow documentation, problem solving, and collaboration using Confluence and Jira. Preferred experience includes AWS, Maven, Git/GitLab, MapReduce, JUnit, Python, Linux, streaming capabilities, and AI. The role requires a current Top Secret/SCI clearance with favorable polygraph and U.S. citizenship.

Develop and modernize scalable Java and Angular applications processing large volumes of enterprise data. Responsibilities include REST API development, relational database optimization, containerization with Docker and Kubernetes deployment, automated testing, GitLab CI/CD, technical documentation, and backup database administration. The role contributes to architecture decisions, troubleshooting, code reviews, and mission-critical software modernization while requiring an active Top Secret/SCI clearance with favorable Polygraph.

Lead design and delivery of scalable, resilient distributed systems. Act as technical authority across teams, mentor engineers, drive architecture and CI/CD best practices, troubleshoot production issues, optimize performance, and enhance observability while writing production-grade Java.

Maintain and support Java-based healthcare SaaS applications across multiple customer environments. Responsibilities include bug fixes, feature delivery, refactoring, deployments, security remediation, SQL and data migrations, code reviews, configuration improvements, and production support. The role requires a generalist software engineer comfortable with Java, Angular, SQL, REST APIs, enterprise applications, and customer-facing environments.

Develop and support cloud-native Java software for massively parallel, data-intensive analytics platforms. Build scalable distributed systems using Kubernetes, Hadoop, and Accumulo; automate authorization-to-operate processes through the Risk Management Framework; and deploy and maintain AWS cloud resources with Terraform and CI/CD pipelines. Collaborate with multidisciplinary teams on mission-critical national security systems while troubleshooting, testing, securing, and improving enterprise software.

Develop and maintain Java-based web applications that automate data management and approvals for intelligence community data custodians. Design complex algorithms, ensure quality and performance, improve documentation and development processes, gather software requirements, and support installation and operational monitoring. The role uses Agile methods and technologies including Quarkus, PrimeFaces, SQL, PostgreSQL, and Elasticsearch.

Develop and maintain cloud-based software supporting intelligence operations. Design scalable distributed systems, integrate and test software components, build modern React web applications using JavaScript, TypeScript, and Kotlin, and work with massive datasets using HBase, Accumulo, or BigTable. Produce technical documentation and operate in Linux/UNIX environments while collaborating with cross-functional teams on high-performance, secure solutions.

Design, develop, test, operate, and secure software systems using Java and advanced security practices. Responsibilities include code reviews, vulnerability mitigation, debugging, architecture-wide development, RESTful services, technical documentation, and collaboration on reliable, scalable solutions. The role requires an active TS/SCI clearance with current polygraph and supports national security programs.

Develop and maintain Java applications for large-scale distributed computing environments supporting the Intelligence Community. Responsibilities include full lifecycle software development, system integration, testing, deployment, CI/CD, Infrastructure as Code, containerized microservices, production monitoring, troubleshooting, performance optimization, and Tier III on-call support. The role also involves code and architecture reviews, stakeholder collaboration, and mentoring junior developers.

Develop and maintain Java applications, RESTful services, and Angular frontends using Spring Boot and NgRx. Deploy applications to cloud platforms, practice TDD, manage CI/CD with Jenkins, and work with Oracle and PostgreSQL databases. Participate in agile processes, collaborate with cross-functional teams, mentor engineers, and independently lead technical initiatives and feature delivery.