Senior UI Application Engineer

📍 Job Overview

Job Title: Senior UI Application Engineer Company: CACI International Location: Linthicum Heights, MD, United States Job Type: Full-time Category: Engineering / Software Development / UI Engineering Date Posted: May 20, 2026 Experience Level: Senior (10+ years) Remote Status: On-site

🚀 Role Summary

• Develop, test, deploy, and sustain modern web-based applications using Angular 14+ to support enterprise-level system security evaluation and authorization processes.
• Build intuitive, data-driven single-page application (SPA) dashboards that effectively visualize complex data originating from ReST endpoints, enhancing project visibility and workflow efficiency.
• Create UI mockups and prototypes to facilitate new development efforts and ensure alignment with user needs and project objectives.
• Integrate UI components seamlessly with backend services, ensuring robust request/response handling and accurate, polished data presentation.
• Enhance application aesthetics and user experience through expert application of CSS for styling and presentation.

📝 Enhancement Note: This role is positioned within the "Secure the Enterprise" initiative, indicating a focus on national security or government-related projects. The emphasis on Angular 14+, SPA dashboards, and ReST APIs suggests a modern, forward-thinking frontend development environment. The requirement for TS/SCI with Polygraph clearance is a critical factor for this position.

📈 Primary Responsibilities

• Architect and implement robust, scalable, and maintainable frontend solutions using Angular 14+, adhering to best practices in application development and performance optimization.
• Design and develop responsive, user-friendly SPA dashboards capable of consuming and displaying data from various ReST endpoints, providing actionable insights for system security evaluation and authorization workflows.
• Collaborate closely with backend engineers, UI/UX designers, and stakeholders to define requirements, translate user stories into technical specifications, and ensure seamless integration of frontend and backend systems.
• Lead the creation of UI mockups and interactive prototypes, employing tools like Balsamiq, to gather feedback, validate design concepts, and communicate technical vision to diverse audiences.
• Implement and maintain comprehensive unit and integration tests for frontend components and services, ensuring code quality, reliability, and adherence to performance benchmarks.
• Optimize application performance, focusing on rendering speed, data loading efficiency, and overall user experience, particularly for complex data visualizations.
• Contribute to the continuous monitoring and improvement of deployed applications, addressing bugs, implementing enhancements, and ensuring system security and compliance.
• Provide technical leadership and mentorship to junior developers, fostering a collaborative and high-performing team environment focused on innovation and mission success.

📝 Enhancement Note: The responsibilities highlight a senior-level contribution, encompassing not just development but also architecture, testing, and mentorship. The iterative nature of "sustain" and "enhance" implies ongoing engagement with the application lifecycle. The focus on "streamlined approvals" and "continuous monitoring" suggests that operational efficiency and data visibility are key outcomes expected from this role's contributions.

🎓 Skills & Qualifications

Education:

• Required: A technical degree is mandatory. The specific level of experience required is inversely proportional to the educational attainment:
  • High School Diploma/GED: 12 years of relevant technical experience.
  • Associate’s Degree: 10 years of relevant technical experience.
  • Bachelor’s Degree: 8 years of relevant technical experience.
  • Master’s Degree: 6 years of relevant technical experience.
  • Doctorate: 4 years of relevant technical experience.
• All education and experience must be from accredited institutions and directly related to the role's technical requirements.

Experience:

• Minimum of 4 years of relevant experience with a Doctorate, up to 12 years with a High School Diploma/GED, demonstrating progressive responsibility in UI application engineering.
• Proven technical leadership experience in UI development.

Required Skills:

• Active Security Clearance: TS/SCI with Polygraph is a mandatory requirement.
• Core Frontend Technologies: High proficiency in TypeScript and JavaScript.
• Angular Framework: Hands-on expertise developing user interfaces with the Angular Framework (specifically Angular 14+).
• API Integration: Experience analyzing JSON structures and working effectively with ReST APIs for data retrieval and manipulation.
• CSS Styling: Strong skills in CSS for sophisticated UI styling, presentation, and responsive design.
• Single-Page Applications (SPA): Proven experience building modern SPA dashboards.

Preferred Skills:

• Project Management Tools: Experience with Jira and Confluence for agile project management and documentation.
• Agile Methodologies: Familiarity with Agile development principles or Scaled Agile Framework (SAFe).
• Cloud Platforms: Exposure to Amazon Web Services (AWS).
• Databases: Familiarity with MongoDB.
• Prototyping Tools: Experience with tools such as Balsamiq for UI mockups and prototyping.

📝 Enhancement Note: The tiered experience requirement based on education is a common practice in government contracting roles to accommodate diverse candidate backgrounds. The emphasis on Angular 14+ indicates a need for up-to-date framework knowledge. The "Desired" skills point towards a broader ecosystem of tools and methodologies that would enhance a candidate's suitability.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Angular Project Examples: Showcase at least two significant projects developed using Angular (ideally v14+), demonstrating your ability to build complex SPAs, integrate with ReST APIs, and manage application state.
• UI/UX Design Contributions: Include examples of UI mockups or prototypes created (e.g., using Balsamiq or similar tools), highlighting your process for translating functional requirements into intuitive user interfaces.
• Data Visualization: Present a project or component that effectively visualizes complex data from APIs, detailing the data structures (JSON) and the techniques used for presentation.
• Code Quality & Testing: Provide examples of well-structured, maintainable code (e.g., through GitHub links or code snippets), along with evidence of unit or integration testing practices.

Process Documentation:

• Workflow Design: Demonstrate how you approach designing user workflows for complex applications, focusing on user-centricity and efficiency for tasks like system security evaluation and authorization.
• API Integration Strategy: Outline your methodology for integrating frontend applications with backend ReST APIs, including error handling, data transformation, and performance considerations.
• Styling & Theming: Explain your approach to CSS styling, ensuring consistency, maintainability, and responsiveness across different devices and screen resolutions.
• Agile Development Practices: If applicable, describe your experience within Agile or SAFe frameworks, including participation in ceremonies, sprint planning, and backlog refinement.

📝 Enhancement Note: For a Senior UI Application Engineer, a portfolio is crucial. It should not only display completed projects but also articulate the candidate's thought process, problem-solving approach, and understanding of modern development methodologies. The focus should be on impact, efficiency, and technical excellence within the specified technology stack.

💵 Compensation & Benefits

Salary Range: $113,200 - $237,800 USD per year

Benefits:

• Comprehensive Healthcare: Medical, dental, and vision insurance plans.
• Wellness Programs: Initiatives and resources to support employee well-being.
• Financial Planning: Access to financial advisory services and planning tools.
• Retirement Savings: Robust 401(k) or similar retirement savings plan with potential company match.
• Family Support: Benefits designed to support employees and their families, potentially including parental leave or childcare resources.
• Continuing Education: Opportunities for professional development, including tuition reimbursement, certifications, and access to learning platforms.
• Flexible Time Off: A unique flexible time off benefit allowing employees to take the time they need.
• Other Time Off Benefits: Standard paid time off, holidays, and sick leave.

Working Hours: 40 hours per week. The company culture emphasizes flexibility, though specific on-site requirements may influence daily scheduling.

📝 Enhancement Note: The salary range is broad, reflecting the significant impact of location (Linthicum Heights, MD is a high cost-of-living area, especially with government contracting), the extensive experience range (4-12 years), and the highly specialized TS/SCI with Polygraph clearance. The benefits package emphasizes a holistic approach to employee well-being and career development, with "Flexible Time Off" being a notable differentiator.

🎯 Team & Company Context

🏢 Company Culture

Industry: Government Contracting / Information Technology / Defense & Aerospace. CACI International is a major player in providing IT solutions and services to government agencies, particularly within the defense and intelligence sectors. This context implies a strong emphasis on mission success, security, compliance, and long-term client relationships. Company Size: Large enterprise (CACI International is a publicly traded company with tens of thousands of employees globally). This size offers stability, extensive resources, and diverse career pathways but may also mean navigating larger organizational structures. Founded: 1962. CACI has a long history, indicating established processes, a deep understanding of government contracting, and a stable operational framework.

Team Structure:

• The role is part of the "Secure the Enterprise" initiative, suggesting a dedicated team focused on specific security modernization goals.
• The team likely comprises various engineering disciplines, including frontend, backend, DevOps, security analysts, and project managers, working collaboratively.
• Reporting structure is likely within an engineering department, potentially under a lead engineer or program manager, with direct collaboration across functional roles.

Methodology:

• Data-Driven Approach: The role emphasizes building "data-driven user interfaces" and visualizing "complex data," indicating a strong reliance on analytics and metrics for decision-making and progress tracking.
• Agile/SAFe Practices: While not strictly mandated, familiarity with Agile or SAFe is preferred, suggesting that iterative development, sprint planning, and cross-functional team collaboration are likely employed.
• Continuous Improvement: The mention of "continuous monitoring and streamlined approvals" implies a culture of ongoing process refinement and optimization.

Company Website: https://www.caci.com/

📝 Enhancement Note: CACI's focus on government contracting means that adherence to strict security protocols, contractual obligations, and client requirements are paramount. The company culture is likely built around integrity, mission focus, and technical excellence. The "Secure the Enterprise" initiative points to a critical, high-impact project.

📈 Career & Growth Analysis

Operations Career Level: Senior UI Application Engineer. This level signifies a seasoned professional expected to lead complex development efforts, mentor junior team members, and contribute significantly to architectural decisions. It's a position of influence and responsibility beyond individual contribution.

Reporting Structure: The role likely reports to a Lead UI Engineer, Engineering Manager, or Program Manager responsible for the "Secure the Enterprise" initiative. Collaboration will be extensive with cross-functional teams including backend engineers, system administrators, cybersecurity analysts, and project stakeholders.

Operations Impact: This role directly impacts the efficiency and effectiveness of system security evaluation and authorization processes. By building intuitive, data-driven interfaces, the engineer will simplify complex workflows, improve visibility into security statuses, and accelerate approval cycles, thereby strengthening the overall security posture of the enterprise. This translates to reduced risk, improved compliance, and more streamlined operational security.

Growth Opportunities:

• Technical Specialization: Deepen expertise in Angular, modern frontend architectures, and potentially related cloud technologies (AWS) or security tools.
• Leadership Development: Transition into roles such as Lead UI Engineer, Technical Lead, or Architecture roles, managing larger teams or more complex projects.
• Cross-Functional Skill Expansion: Gain exposure to backend technologies, DevOps practices, or cybersecurity principles relevant to the "Secure the Enterprise" mission.
• Program Management: Opportunities to move into program management or project leadership roles, leveraging technical understanding to oversee broader initiatives.
• Government Contracting Expertise: Develop specialized knowledge within the government contracting space, becoming an expert in navigating its unique requirements and opportunities.

📝 Enhancement Note: The "Senior" title, coupled with the high-clearance requirement, positions this as a critical role with significant growth potential, particularly within the government contracting sector. The emphasis on modernization and automation suggests opportunities to drive innovation and shape future solutions.

🌐 Work Environment

Office Type: On-site in Linthicum Heights, MD. This is a standard requirement for roles involving TS/SCI with Polygraph clearances, ensuring physical security and controlled access to sensitive information and systems. Office Location(s): Linthicum Heights, Maryland, within the Baltimore-Washington metropolitan area, a hub for government contracting and intelligence agencies. This location offers proximity to major government facilities and a strong talent pool.

Workspace Context:

• Secure Environment: The workspace will be within a secure facility, adhering to strict protocols for personnel and information handling.
• Collaborative Setup: While on-site, expect a collaborative environment conducive to team-based development, including potential for shared workspaces, meeting rooms, and dedicated project areas.
• Technology Access: Access to high-performance workstations, secure networks, and necessary software tools (e.g., IDEs, collaboration platforms) will be provided.

Work Schedule: Typically a standard 40-hour work week. While the company offers flexible time off, the on-site nature and clearance requirements may necessitate adherence to specific core working hours or project-driven schedules.

📝 Enhancement Note: The on-site requirement is non-negotiable due to the TS/SCI with Polygraph clearance. This environment is geared towards highly secure operations, demanding strict adherence to protocols and potentially limiting remote work flexibility during working hours, though overall time off policies are flexible.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: HR or recruiter call to assess basic qualifications, clearance status, and interest.
• Technical Screening: Interview with a hiring manager or senior engineer to evaluate technical skills, particularly in Angular, TypeScript, JavaScript, and ReST APIs. Expect questions on SPA development and data visualization.
• Portfolio Review Session: A dedicated session where you will present key projects from your portfolio. Be prepared to walk through your code, explain architectural decisions, discuss challenges encountered, and articulate the impact of your work.
• On-site/Virtual Interview: Further interviews, potentially including a whiteboard coding exercise or a system design challenge focused on UI applications. This stage may also assess cultural fit and collaboration style.
• Final Interview: Discussions with senior leadership or program stakeholders to confirm suitability for the role and project.

Portfolio Review Tips:

• Curate Selectively: Choose 2-3 of your strongest, most relevant projects that showcase your Angular expertise, API integration skills, and ability to build data-driven dashboards.
• Demonstrate Impact: For each project, clearly articulate the problem it solved, your specific contributions, the technologies used, and the measurable outcomes or benefits achieved (e.g., improved efficiency, enhanced user experience, reduced errors).
• Code Walkthrough: Be prepared to present code samples, explaining your design patterns, logic, and how you addressed specific technical challenges. Highlight code quality, testing strategies, and maintainability.
• Tool Proficiency: If you used preferred tools like Balsamiq, Jira, or Confluence, be ready to discuss how they were integrated into your development process.
• Storytelling: Frame your project presentations as compelling narratives that highlight your problem-solving skills and technical leadership.

Challenge Preparation:

• Angular Fundamentals: Review core Angular concepts, component lifecycle, data binding, services, routing, and RxJS.
• TypeScript/JavaScript: Brush up on advanced TypeScript features and modern JavaScript (ES6+) syntax and best practices.
• API Design & Consumption: Understand ReST principles, HTTP methods, status codes, and how to effectively consume and display JSON data.
• UI/UX Principles: Familiarize yourself with basic UI/UX design principles, responsive design, and accessibility standards.
• Problem-Solving Scenarios: Practice solving hypothetical UI development challenges, focusing on breaking down problems, evaluating trade-offs, and articulating your solution clearly.

📝 Enhancement Note: The interview process for a role requiring TS/SCI with Polygraph often involves multiple stages to thoroughly vet candidates. The portfolio review is a critical component, demanding not just technical skill but also the ability to communicate complex technical concepts and demonstrate tangible impact.

🛠 Tools & Technology Stack

Primary Tools:

• Angular Framework (v14+): The core technology for building the web applications. Expertise in components, services, modules, routing, and state management is essential.
• TypeScript: The primary language for developing Angular applications, ensuring type safety and enhanced code maintainability.
• JavaScript (ES6+): Foundational knowledge for understanding and working with web technologies.
• HTML5 & CSS3: Essential for structuring and styling web content, including advanced techniques for responsive design and animations.

Analytics & Reporting:

• ReST APIs: Critical for data retrieval and interaction with backend services. Understanding JSON data structures is key.
• Data Visualization Libraries: While not explicitly listed, libraries like Chart.js, D3.js, or Angular-specific charting components are likely used to build the SPA dashboards.
• Browser Developer Tools: Essential for debugging, performance analysis, and inspecting application behavior.

CRM & Automation:

• Jira: Preferred tool for agile project management, issue tracking, and workflow management.
• Confluence: Preferred tool for documentation, knowledge sharing, and collaborative content creation.
• Git/Version Control: Standard for code management, collaboration, and maintaining code history.

Other Potential Tools (Desired):

• AWS (Amazon Web Services): Cloud platform experience may be required for deployment or backend integration.
• MongoDB: Familiarity with NoSQL databases.
• Balsamiq: Tool for creating low-fidelity wireframes and mockups.

📝 Enhancement Note: The technology stack is heavily focused on modern frontend development with Angular as the central framework. Proficiency in TypeScript, CSS, and ReST API integration is non-negotiable. Experience with Agile tools like Jira and Confluence, along with potential cloud exposure (AWS), would be significant advantages.

👥 Team Culture & Values

Operations Values:

• Integrity: Paramount in government contracting, emphasizing honesty, ethical conduct, and trustworthiness in all actions and communications.
• Mission Focus: A deep commitment to supporting and achieving the customer's mission objectives, particularly concerning national security and enterprise protection.
• Innovation & Modernization: A drive to adopt cutting-edge technologies and methodologies (like Angular 14+, automation) to improve existing systems and processes.
• Collaboration & Teamwork: Valuing collective effort and open communication to solve complex problems and achieve shared goals.
• Excellence & Quality: A commitment to delivering high-quality, reliable, and performant applications that meet stringent standards.

Collaboration Style:

• Cross-Functional Integration: Expect close collaboration with backend engineers, security specialists, QA testers, and project managers to ensure seamless integration and alignment on project goals.
• Open Communication: An environment that encourages asking questions, sharing ideas, and providing constructive feedback, especially during development and review phases.
• Agile Mindset: Embracing iterative development, continuous feedback loops, and adaptability to changing requirements, likely facilitated by tools like Jira and Confluence.
• Knowledge Sharing: A culture where team members are encouraged to share expertise, best practices, and lessons learned to foster collective growth.

📝 Enhancement Note: The company's emphasis on "A culture of integrity," "An environment of trust," and "A focus on continuous growth" directly shapes the team's operational values. For this role, integrity and mission focus are likely the most critical, followed by a proactive approach to adopting modern technologies for security enhancement.

⚡ Challenges & Growth Opportunities

Challenges:

• Security Clearance Requirements: The TS/SCI with Polygraph is a significant hurdle, requiring extensive background checks and ongoing compliance.
• Complex Legacy Systems Integration: Modernizing security evaluation processes may involve integrating new UIs with existing, potentially complex or older, backend systems.
• Rapid Technological Evolution: Keeping pace with advancements in Angular and frontend technologies while maintaining stability and security.
• Meeting Stringent Security Standards: Ensuring all developed applications adhere to rigorous government security protocols and compliance requirements.
• Balancing User Experience with Security: Designing intuitive interfaces that simplify workflows without compromising security protocols.

Learning & Development Opportunities:

• Advanced Angular Training: Opportunities to deepen expertise in Angular features, performance optimization, and architectural patterns.
• Cloud Technology Exposure: Learning and applying AWS services relevant to modern application deployment and management.
• Cybersecurity Fundamentals: Gaining a better understanding of cybersecurity principles and how UI applications contribute to enterprise security.
• Agile/SAFe Certifications: Pursuing certifications to formalize knowledge in agile methodologies.
• Mentorship Programs: Access to senior engineers and leaders for guidance on career progression and technical challenges.
• Conferences & Workshops: Potential to attend industry events focused on frontend development, UI/UX, or cybersecurity.

📝 Enhancement Note: The challenges are inherent to high-security government contracting roles, demanding meticulousness and adaptability. The growth opportunities are substantial, allowing for significant professional development in both technical and leadership capacities within a specialized and high-demand field.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex UI you built using Angular. What were the key challenges, and how did you overcome them? How did you ensure data visualization was effective?" (Focus on problem-solving, technical depth, and impact).
• "How do you approach integrating a new frontend application with existing ReST APIs? What are your considerations for error handling, data transformation, and performance?" (Assess API integration strategy and technical rigor).
• "Walk me through your process for creating UI mockups and prototypes. How do you ensure they meet user needs and align with project requirements?" (Evaluate UI/UX design process and stakeholder communication).
• "How do you stay current with the latest trends and best practices in Angular and frontend development?" (Gauge commitment to continuous learning).
• "Describe a time you provided technical leadership or mentored junior developers. What was your approach, and what was the outcome?" (Assess leadership and team contribution).

Company & Culture Questions:

• "What interests you about CACI International and this specific 'Secure the Enterprise' initiative?" (Demonstrate research and genuine interest).
• "How do you align with our core values of integrity, trust, and continuous growth?" (Connect your personal values and work ethic to CACI's principles).
• "Given the sensitive nature of this role, how do you prioritize security and compliance in your development work?" (Highlight your understanding of security protocols).
• "How do you view the balance between delivering features quickly and ensuring high code quality and application stability?" (Showcase pragmatic development philosophy).

Portfolio Presentation Strategy:

• Structure Your Narrative: For each project, start with the problem, your role and approach, the technical solution, key challenges, and the measurable results.
• Highlight Key Technologies: Explicitly mention your use of Angular 14+, TypeScript, CSS, and ReST APIs.
• Showcase Data Visualization: Detail how you handled complex data and presented it effectively in dashboards.
• Code Snippets: Be ready to share relevant code snippets that demonstrate best practices, efficient algorithms, or clever solutions.
• Address Questions Proactively: Anticipate questions about your design choices, trade-offs made, and how you handled specific technical hurdles.
• Enthusiasm & Clarity: Present with confidence and clarity, conveying your passion for UI engineering and your ability to contribute to the team's mission.

📝 Enhancement Note: Interview preparation should focus on demonstrating not only technical proficiency but also strong problem-solving skills, leadership potential, and alignment with the company's values, especially integrity and mission focus, given the nature of the role.

📌 Application Steps

To apply for this Senior UI Application Engineer position:

• Submit Your Application: Navigate to the CACI careers portal via the provided link and complete the online application form. Ensure all requested information is accurate and complete.
• Tailor Your Resume: Update your resume to clearly highlight your experience with Angular (version 14+), TypeScript, JavaScript, CSS, ReST APIs, and SPA development. Quantify achievements whenever possible (e.g., "Improved data loading performance by 30%"). Emphasize any experience with government projects or security clearances.
• Prepare Your Portfolio: Curate a portfolio showcasing 2-3 of your most impactful UI projects. Focus on those demonstrating strong Angular skills, data visualization, and API integration. Be ready to present your code and discuss your design process and the business impact of your work.
• Research CACI International: Familiarize yourself with CACI's mission, values, and recent projects, particularly those related to government contracting and cybersecurity initiatives. Understand their commitment to integrity and innovation.
• Practice Interview Responses: Rehearse answers to common technical and behavioral interview questions, focusing on the STAR method (Situation, Task, Action, Result) for behavioral questions and technical deep-dives for role-specific inquiries. Practice presenting your portfolio projects concisely and effectively.

⚠️ 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.