Senior UI Developer

📍 Job Overview

Job Title: Senior UI Developer

Company: Nightwing

Location: Annapolis Junction, MD, United States

Job Type: Full time

Category: Software Development / Engineering

Date Posted: 2026-09-10

Experience Level: 5-10 Years

Remote Status: On-site

🚀 Role Summary

• Spearhead the design and development of enterprise-grade Java applications, with a strong emphasis on OSGi framework principles for modular and dynamic service architectures.

• Drive the development and maintenance of applications on Apache Karaf, effectively leveraging its runtime container capabilities for deploying and managing OSGi bundles.

• Play a key role in building and enhancing software-defined networking (SDN) platforms, contributing to the creation of controllers, plugins, and sophisticated network management applications.

• Architect and implement scalable microservices architectures designed to support distributed network functions and real-time data processing.

📝 Enhancement Note: The provided job description is for a "Senior Java Developer," not a "Senior UI Developer" as initially stated in the input. The role heavily emphasizes backend Java development within the context of cybersecurity, SIGINT, and software-defined networking, rather than front-end user interface development. This enhancement will proceed assuming the intended role is Senior Java Developer, aligning with the detailed responsibilities and qualifications.

📈 Primary Responsibilities

• Design, develop, and implement enterprise-grade Java applications adhering to OSGi framework principles for modular, dynamic service architectures.

• Build and maintain applications on Apache Karaf, utilizing its runtime container for efficient deployment and management of OSGi bundles.

• Contribute to the development of software-defined networking (SDN) platforms, including controllers, plugins, and network management applications.

• Develop modular services to enable dynamic network configuration, monitoring, and orchestration capabilities.

• Design and implement RESTful APIs and northbound/southbound interfaces for enhanced network programmability and seamless integration.

• Construct scalable microservices architectures supporting distributed network functions and real-time data processing.

• Optimize application performance for high-throughput, low-latency environments handling complex network traffic.

• Collaborate effectively with network engineers, architects, and cross-functional teams to deliver innovative networking solutions.

• Implement robust automated testing strategies, including unit, integration, and system-level tests for mission-critical components.

• Actively participate in code reviews, technical design sessions, and contribute to critical architectural decisions.

• Ensure adherence to agile development practices and configuration management standards, leveraging modern DevSecOps tools and workflows.

• Troubleshoot and resolve complex issues within distributed systems and network control applications.

📝 Enhancement Note: The core responsibilities provided are highly specific to backend Java development within a complex networking and cybersecurity context. The emphasis on OSGi, Apache Karaf, and SDN indicates a need for deep technical expertise in these niche areas, rather than general software development. The inclusion of DevSecOps and automated testing highlights a modern development lifecycle expectation.

🎓 Skills & Qualifications

Education: A STEM degree (Science, Technology, Engineering, Mathematics) or equivalent practical experience.

Experience: 5+ years of professional Java development experience.

Required Skills:

• Strong expertise in OSGi framework architecture, including bundle lifecycle management, service registry, and modularity principles.

• Proven experience with Apache Karaf or similar OSGi runtime containers (e.g., Apache Felix, Eclipse Equinox).

• Deep understanding of Java frameworks such as Spring, Spring Boot, and dependency injection patterns.

• Demonstrated experience with software-defined networking (SDN) concepts, network protocols, and programmable network architectures.

• Proficiency in building RESTful web services and working with API design patterns.

• Experience with messaging systems and event-driven architectures (e.g., Kafka, ActiveMQ, RabbitMQ).

• Solid understanding of multithreading, concurrency, and asynchronous programming in Java.

• Familiarity with version control using Git and CI/CD automation tools.

• Strong analytical and problem-solving abilities, with proven experience debugging complex distributed systems.

• Excellent communication and teamwork skills, coupled with a passion for innovation and collaboration.

• Active TS/SCI security clearance with Polygraph.

• U.S. citizenship is required. Preferred Skills:

• Experience contributing to open-source SDN controller platforms and network virtualization projects.

• Knowledge of network protocols such as OpenFlow, NETCONF, RESTCONF, BGP, and OSPF.

• Experience with YANG data modeling and network device configuration management.

• Familiarity with Network Function Virtualization (NFV) and Virtual Network Functions (VNF).

📝 Enhancement Note: The qualifications are highly specialized, pointing to a niche role within network-centric cybersecurity. The explicit requirement for a TS/SCI with Polygraph clearance and U.S. citizenship significantly narrows the candidate pool and indicates work on sensitive government projects. The emphasis on OSGi and Karaf suggests a deep dive into modular Java architectures.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrations of modular Java application design using OSGi principles, showcasing bundle lifecycle management and service registration.

• Case studies of applications developed and deployed on Apache Karaf or similar OSGi runtimes, highlighting deployment strategies and runtime management.

• Examples of contributions to or development within Software-Defined Networking (SDN) platforms, detailing controller or plugin development.

• Proof of experience in building scalable microservices architectures, including system design, API interactions, and data flow.

• Documentation of RESTful API design and implementation, illustrating API contracts and integration patterns. Process Documentation:

• Workflow designs for developing and deploying OSGi bundles within an enterprise context, detailing the development lifecycle.

• Implementation strategies for automated testing frameworks within a Java/OSGi/SDN environment, emphasizing unit, integration, and system testing.

• Documentation of CI/CD pipeline configurations for Java applications, showcasing build, test, and deployment automation using Git and related tools.

• Case studies of performance optimization for high-throughput, low-latency Java applications, detailing methodologies and achieved results.

📝 Enhancement Note: Given the technical depth of the role, a portfolio showcasing concrete examples of OSGi, Karaf, and SDN development is crucial. The emphasis should be on demonstrating practical application of these technologies, rather than theoretical knowledge. Process documentation should highlight how the candidate has managed complex development lifecycles and ensured quality in mission-critical systems.

💵 Compensation & Benefits

Salary Range: $122,000 - $253,000 annually. This range is provided by the employer and reflects compensation commensurate with qualifications, years of relevant experience, and demonstrated expertise. Compensation will be determined based on these factors to ensure alignment with skills, responsibilities, and market standards.

Benefits:

• Comprehensive medical insurance coverage.

• Vision insurance coverage.

• Dental insurance coverage.

• 401k retirement savings plan.

• Paid time off (PTO).

• Paid holidays.

• Additional insurance provisions (details not specified).

Working Hours: Standard 40 hours per week, on-site.

📝 Enhancement Note: The salary range is substantial, reflecting the senior level, specialized technical skills required, and the critical nature of the work (requiring high-level security clearance). The benefits package is standard for a full-time role, with specific mention of health insurance, retirement savings, and paid time off. The on-site requirement is clearly stated.

🎯 Team & Company Context

🏢 Company Culture

Industry: Cyber, Data Operations, Systems Integration, and Intelligence Mission Support Services. Nightwing operates within the defense and intelligence sectors, providing technically advanced solutions.

Company Size: The specific size is not provided in the raw data, but the context suggests a company with significant government contracts and a focused operational scope.

Founded: The founding date is not provided, but the company's mission-focused nature and technical capabilities suggest a mature organization with a history of supporting demanding customer challenges.

Team Structure:

• The role is part of a team focused on developing strategic and tactical SIGINT solutions.

• Expect collaboration with network engineers, architects, and other cross-functional teams.

• The development environment is described as collaborative, embracing creativity, integrity, and constant improvement.

• The team works with state-of-the-art tools and focuses on mission-critical operations. Methodology:

• Agile development practices are expected, alongside modern DevSecOps tools and workflows.

• Emphasis on modular, dynamic service architectures using OSGi.

• Development of scalable microservices and software-defined networking solutions.

• Implementation of automated testing strategies for mission-critical components.

Company Website: Nightwing (implied to be nightwing.com based on domain_derived)

📝 Enhancement Note: Nightwing operates in a highly specialized and sensitive sector (cyber, intelligence). The culture is likely to be demanding, security-conscious, and technically rigorous, with a strong emphasis on mission success. The team structure will involve close collaboration with technical experts and potentially government stakeholders.

📈 Career & Growth Analysis

Operations Career Level: Senior Developer. This implies a role with significant technical responsibility, potential for mentoring junior developers, and a key contribution to architectural decisions. The focus is on deep technical expertise in Java, OSGi, and SDN.

Reporting Structure: While not explicitly stated, a Senior Developer typically reports to a Development Lead, Engineering Manager, or Architect. They will collaborate closely with architects and network engineers.

Operations Impact: The role has a direct impact on mission-critical operations by developing and enhancing advanced cyber, data operations, and intelligence support services. The software-defined networking solutions are crucial for national security.

Growth Opportunities:

• Deepen expertise in emerging SDN technologies, network programmability, and distributed systems through hands-on project work.

• Opportunities to gain experience with cutting-edge Java frameworks, OSGi architectures, and next-generation networking technologies.

• Potential to move into technical leadership roles, architectural design, or specialized areas within SIGINT solutions.

• Professional development through working with state-of-the-art tools and on challenging, impactful projects.

📝 Enhancement Note: This senior role offers significant technical growth within specialized areas of Java development, networking, and cybersecurity. Advancement likely involves increasing technical leadership, architectural influence, or specialization in highly sought-after domains like SIGINT and SDN.

🌐 Work Environment

Office Type: On-site position at Nightwing's National Business Park, Maryland location.

Office Location(s): Annapolis Junction, MD, 20701, USA.

Workspace Context:

• A collaborative environment that embraces creativity, integrity, and constant improvement.

• Access to state-of-the-art tools and technologies for development.

• Work alongside the nation's finest service members and skilled professionals.

• The environment is described as dynamic and values technical excellence and innovation.

Work Schedule: Full-time, with the specific working hours detailed as 40 hours per week. The on-site nature suggests a standard professional work schedule.

📝 Enhancement Note: The on-site requirement in Annapolis Junction, MD, is a key factor. The workspace is designed to foster collaboration and innovation, utilizing advanced tools to support mission-critical work in the cybersecurity and intelligence domain.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Review of resume and qualifications, with a strong emphasis on matching required experience (Java, OSGi, Karaf, SDN) and security clearance.

• Technical Interview(s): In-depth discussions focusing on Java development, OSGi principles, Apache Karaf usage, SDN concepts, microservices architecture, and distributed systems. Expect to be asked about problem-solving approaches for complex technical challenges.

• Portfolio Review: Candidates will likely be asked to present and discuss their portfolio, highlighting specific projects demonstrating their expertise in the required technologies. This is a critical step to validate practical skills.

• Security & Cultural Fit: Assessment of U.S. citizenship and active TS/SCI with Polygraph clearance. Evaluation of teamwork, communication skills, and alignment with Nightwing's collaborative and mission-driven culture.

• Final Interview: May involve senior leadership or stakeholders to discuss overall fit and long-term contributions.

Portfolio Review Tips:

• OSGi & Karaf Deep Dive: Prepare detailed explanations of OSGi bundle development, service lifecycle management, and deployments within Apache Karaf. Showcase specific examples of modular architectures you've designed or implemented.

• SDN & Network Programmability: Highlight any contributions to SDN controllers, plugins, or network management applications. Be ready to discuss network protocols and programmable network concepts with practical examples.

• Microservices & API Design: Present case studies of microservices you've built, emphasizing scalability, inter-service communication, and API design. Clearly articulate the problem solved and the benefits achieved.

• Problem-Solving & Debugging: Include examples of complex distributed systems issues you've encountered and how you resolved them. Focus on your systematic approach to debugging and performance optimization.

• DevSecOps & CI/CD: Demonstrate your understanding and experience with Git, CI/CD pipelines, and automated testing within a secure development environment.

Challenge Preparation:

• Be prepared for coding challenges that test core Java skills, concurrency, and potentially OSGi-specific concepts.

• Expect scenario-based questions related to designing or troubleshooting distributed systems, SDN components, or microservices architectures.

• Practice articulating complex technical solutions clearly and concisely, as you will need to explain your design choices and problem-solving methodologies.

📝 Enhancement Note: The interview process will be technically rigorous, heavily focused on validating deep expertise in niche areas like OSGi and SDN. A well-prepared portfolio that clearly demonstrates practical application of these technologies is essential for success. Security clearance is a non-negotiable prerequisite.

🛠 Tools & Technology Stack

Primary Tools:

• Java: Core programming language.

• OSGi Framework: Essential for modular application design.

• Apache Karaf: Runtime container for OSGi bundles.

• Spring Framework / Spring Boot: For enterprise Java application development.

• Git: Version control system.

• CI/CD Tools: For build, test, and deployment automation.

• DevSecOps Tools: Integrated security and development workflows.

Analytics & Reporting:

• While not explicitly listed as primary tools, experience with performance monitoring and debugging tools for distributed systems is implied. CRM & Automation:

• Not directly relevant to this role's core responsibilities.

📝 Enhancement Note: The technology stack is highly specialized, focusing on enterprise Java development within an OSGi ecosystem and integrating with SDN platforms. Proficiency in these specific tools and frameworks is paramount.

👥 Team Culture & Values

Operations Values:

• Technical Excellence: A strong emphasis on deep technical knowledge and skill in Java, OSGi, and SDN.

• Mission Focus: Dedication to supporting critical national security missions through advanced technology solutions.

• Collaboration: Working effectively within cross-functional teams, including network engineers and architects, to achieve common goals.

• Innovation: Embracing creativity and seeking out disruptive technologies to solve complex challenges.

• Integrity & Security: Upholding high standards of integrity and adhering to strict security protocols due to the sensitive nature of the work.

Collaboration Style:

• Highly collaborative, requiring close interaction with network engineers, architects, and other developers.

• Expectation of active participation in code reviews and technical design sessions.

• Openness to sharing knowledge and contributing to a team environment focused on continuous improvement.

📝 Enhancement Note: The team culture at Nightwing is likely to be highly professional, security-conscious, and driven by mission objectives. Collaboration is key, but within a framework of strict security protocols and technical rigor.

⚡ Challenges & Growth Opportunities

Challenges:

• Mastering and applying advanced OSGi framework principles in complex, dynamic service architectures.

• Developing and optimizing applications for high-throughput, low-latency environments within software-defined networks.

• Integrating modular services and managing dependencies in a distributed system.

• Troubleshooting complex issues across interconnected network components and distributed applications.

• Navigating the requirements of a highly secure development environment and maintaining an active TS/SCI with Polygraph clearance. Learning & Development Opportunities:

• Deepen expertise in emerging SDN technologies, network programmability, and distributed systems.

• Gain hands-on experience with cutting-edge Java frameworks, OSGi architectures, and next-generation networking technologies.

• Opportunities to contribute to open-source projects in the SDN space.

• Potential for professional growth into architectural roles or technical leadership positions within the cybersecurity and intelligence domain.

📝 Enhancement Note: This role presents significant technical challenges that require continuous learning and adaptation. The growth opportunities are substantial for individuals seeking to become experts in specialized areas of networking and cybersecurity development.

💡 Interview Preparation

Strategy Questions:

• Technical Architecture: "Describe a complex distributed system you've designed or worked on. What were the key challenges, and how did you address them using principles like OSGi or microservices?"

• Problem Solving: "Imagine a scenario where network latency is impacting your Java application's performance. How would you diagnose and resolve this issue, considering both application and network factors?"

• OSGi & Karaf Expertise: "Explain the advantages of using an OSGi framework and Apache Karaf for enterprise applications. Provide an example of a modular service you've developed and how its lifecycle was managed."

• SDN Concepts: "How would you approach developing a controller for a software-defined network? What key protocols and APIs would you consider, and what are the trade-offs?"

Company & Culture Questions:

• "What attracts you to Nightwing and our mission in the cyber and intelligence domain?"

• "How do you approach collaboration with network engineers and architects on mission-critical projects?"

• "Describe your experience working in a security-conscious environment. How do you ensure compliance with strict protocols?"

• "How do you stay current with advancements in Java, OSGi, and SDN technologies?" Portfolio Presentation Strategy:

• Highlight OSGi/Karaf Projects: Clearly showcase the modularity, service registration, and bundle lifecycle management in your OSGi-based applications.

• Demonstrate SDN/Networking Experience: Present any work related to SDN controllers, network management, or programmable networks, explaining your role and the impact.

• Quantify Results: For microservices or performance optimization projects, use metrics (e.g., latency reduction, throughput increase, error rate decrease) to demonstrate the value of your work.

• Walk Through Code/Design: Be prepared to discuss specific code snippets or architectural diagrams to illustrate your technical decisions and problem-solving approach.

• Focus on Security Integration: If applicable, highlight how security considerations were integrated into your development process.

📝 Enhancement Note: Interview preparation should focus heavily on demonstrating deep technical expertise in Java, OSGi, Karaf, and SDN, supported by concrete examples from your portfolio. The ability to articulate complex technical concepts and problem-solving strategies clearly is crucial.

📌 Application Steps

To apply for this Senior Java Developer position:

• Submit your application through the provided Workday link: https://nwis.wd12.myworkdayjobs.com/NW/job/Annapolis-Junction-MD/Senior-UI-Developer_JR102060

• Tailor your Resume: Ensure your resume prominently features your experience with Java, OSGi, Apache Karaf, SDN, RESTful APIs, microservices, and any relevant security clearances (TS/SCI with Polygraph). Use keywords from the job description.

• Prepare Your Portfolio: Curate a portfolio that showcases projects demonstrating your expertise in OSGi framework architecture, Apache Karaf deployments, SDN development, and scalable microservices. Be ready to present and discuss these in detail.

• Practice Technical Explanations: Rehearse explaining complex technical concepts, your problem-solving methodologies, and the architecture of your past projects, particularly those involving distributed systems and network programmability.

• Research Nightwing: Understand Nightwing's mission, its role in the cyber and intelligence sectors, and the importance of its technical solutions. Be prepared to articulate why you are a good fit for their mission-driven culture.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions. The job title in the original listing may need verification as it states "Senior UI Developer" but the description is for a "Senior Java Developer".