UI Developer

📍 Job Overview

Job Title: UI Developer

Company: Two Six Technologies

Location: Aurora, Colorado / Herndon, Virginia

Job Type: Full-Time

Category: Software Development / Front-End Engineering

Date Posted: May 26, 2026

Experience Level: 5-10 Years

Remote Status: On-site

🚀 Role Summary

• Develop and implement robust, user-centric UI features for enterprise-level tools supporting critical intelligence community and Department of Defense (DoD) missions.

• Contribute to a fast-paced, collaborative, and iterative delivery environment focused on solving complex technical challenges.

• Engage in UI web application framework development and conduct thorough UI testing to ensure high-quality user experiences.

• Leverage a strong foundation in JavaScript/TypeScript and software engineering principles to build scalable and maintainable front-end solutions.

📝 Enhancement Note: This role is specifically for a Front-End Developer with a strong emphasis on UI development and testing within the context of government and intelligence sector projects. The requirement for an active TS/SCI clearance with Poly is a critical differentiator, indicating a need for candidates with deep experience in secure development environments and potentially sensitive data handling.

📈 Primary Responsibilities

• Design, develop, and implement advanced UI features and components using JavaScript/TypeScript and modern front-end frameworks.

• Collaborate closely with cross-functional teams, including back-end developers, designers, and product managers, to translate requirements into functional and visually appealing user interfaces.

• Write comprehensive unit and end-to-end tests to ensure the quality, reliability, and performance of UI applications.

• Participate actively in code reviews, providing constructive feedback to peers and ensuring adherence to coding standards and best practices.

• Troubleshoot and debug front-end issues, optimizing applications for maximum speed, scalability, and responsiveness.

• Contribute to the continuous improvement of development processes, workflows, and tooling within an Agile framework.

• Integrate UI components with back-end services and APIs, ensuring seamless data flow and functionality.

• Stay abreast of emerging front-end technologies and trends, evaluating their potential application to enhance existing or new product features.

📝 Enhancement Note: The responsibilities highlight a hands-on development role with significant emphasis on testing and collaboration. The context of serving the intelligence community suggests a need for attention to detail, security consciousness, and the ability to work with potentially complex data visualizations or specialized user interfaces.

🎓 Skills & Qualifications

Education:

Experience:

• Minimum of 5 years of progressive experience in software engineering.

• Minimum of 2 years of hands-on experience with JavaScript and/or TypeScript.

Required Skills:

• Proficient in JavaScript and/or TypeScript for front-end development.

• Experience with modern UI web application frameworks (e.g., React, Angular, Vue.js - specific framework not explicitly stated but implied by "UI web application frameworks").

• Understanding of UI testing methodologies and experience with relevant tools.

• Strong problem-solving and analytical skills.

• Familiarity with version control systems, particularly Git.

Preferred Skills:

• Experience with JavaScript unit testing frameworks such as Jasmine, Karma, or Vitest.

• Proficiency in end-to-end testing tools like Cypress.

• Experience utilizing Git and Jira within a structured development workflow.

• Demonstrated experience working in an Agile development environment.

• Familiarity with web visualization frameworks, including D3.js or Cesium.

• Experience with SCSS and the Bootstrap CSS framework.

• Knowledge of observer design patterns and libraries like RxJS.

• Understanding of user-centered design principles.

• Experience with design tools such as Sketch or Figma.

📝 Enhancement Note: The "Nice to haves" strongly suggest a preference for candidates who can hit the ground running with established testing practices, CI/CD workflows (implied by Git/Jira/Agile), and potentially complex data visualization needs (D3.js, Cesium). Experience with design tools indicates a strong appreciation for UX/UI integration.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase well-documented code samples demonstrating proficiency in JavaScript/TypeScript and UI development.

• Present case studies of complex UI features or applications developed, highlighting problem-solving approaches and technical implementation details.

• Include examples of UI testing strategies and how they were applied to ensure code quality and application stability.

Process Documentation:

• Provide examples of how you have documented UI development processes, including component design, testing procedures, and integration steps.

• Illustrate your approach to iterative development and how feedback loops were incorporated into the UI development lifecycle.

• Detail your methods for optimizing UI performance and ensuring a responsive user experience across different devices and browsers.

📝 Enhancement Note: For a UI Developer role, especially one requiring a security clearance, a portfolio is crucial. It should not only showcase aesthetic design but also the underlying code quality, testing rigor, and an understanding of secure development practices. The emphasis should be on tangible contributions and measurable outcomes in previous projects.

💵 Compensation & Benefits

Salary Range: $121,986 - $182,979 USD per year.

Benefits:

• Comprehensive Medical Insurance

• Dental Insurance

• Vision Insurance

• Life Insurance

• Disability Insurance

• Retirement Benefits (e.g., 401(k) plan)

• Paid Leave (Vacation, Sick Time, Holidays)

• Tuition Assistance for continued education and professional development

Working Hours:

• Standard full-time work week, typically 40 hours.

• While the role is on-site, there may be occasional flexibility or potential for overtime depending on project demands, common in government contracting environments.

📝 Enhancement Note: The provided salary range is specific to the United States and is based on the provided data. The range reflects a mid-to-senior level developer role in a specialized sector. The benefits package is standard for a reputable technology company, with specific emphasis on professional development and educational support, which is beneficial for staying current in the rapidly evolving UI development field.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology / Government Contracting / Defense & Intelligence

Company Size: The provided data does not specify the exact size of Two Six Technologies, but the nature of their work and the need for specialized roles suggest a mid-to-large sized organization with a significant presence in government contracting.

Founded: The founding date is not specified in the provided data; however, the company's focus on innovative solutions for complex challenges implies a history of technological expertise and adaptation.

Team Structure:

• The UI Developer will likely be part of a larger software engineering team, potentially organized into project-specific squads or pods.

• This team will include other front-end developers, back-end developers, system architects, QA engineers, and potentially UI/UX designers.

Methodology:

• The company emphasizes an iterative delivery environment, suggesting an Agile or Scrum-based methodology.

• Focus on building, deploying, and implementing innovative products that solve complex challenges.

• A collaborative and inclusive approach to problem-solving is a core tenet.

• Emphasis on user-centered design and robust UI features for enterprise tools.

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

📝 Enhancement Note: Two Six Technologies operates in a critical sector, meaning their culture likely balances innovation with rigorous process, security, and mission focus. The emphasis on collaboration and solving complex problems suggests a team environment where intellectual curiosity and technical excellence are highly valued.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a mid-to-senior level UI Developer. It requires a solid foundation of practical experience (5+ years) and specific technical skills (2+ years in JS/TS). The responsibilities involve contributing significantly to core product features and engaging in testing, indicating a level of autonomy and ownership.

Reporting Structure: The UI Developer will likely report to a Software Engineering Manager or a Technical Lead, who oversees a team of developers working on specific projects or product lines. Collaboration will extend across multiple teams and potentially client-facing technical representatives.

Operations Impact: While this is a development role, its impact is critical to the operational effectiveness of tools used by the intelligence community and DoD. A well-designed, performant, and reliable UI directly affects user productivity, data comprehension, and the ability to execute missions successfully. This role contributes to the 'usability' aspect of operational deployment.

Growth Opportunities:

• Technical Specialization: Deepen expertise in specific UI frameworks, visualization libraries (D3.js, Cesium), or front-end architecture patterns.

• Lead Developer: Progress to a Senior or Lead UI Developer role, taking on more architectural responsibilities, mentoring junior developers, and driving technical decisions.

• Cross-Disciplinary Learning: Gain exposure to back-end development, DevOps practices, or cloud technologies, especially within secure environments.

• Project Leadership: Move into roles with greater project management or technical leadership responsibilities within specific government contracts.

• Security Clearance Advancement: Further develop security clearance levels or specialize in secure development practices.

📝 Enhancement Note: The growth path for a UI Developer in this sector is strongly tied to both technical depth and the ability to navigate complex, secure environments. Opportunities often involve taking on more responsibility for critical systems that have direct real-world impact.

🌐 Work Environment

Office Type: This position is specifically designated as On-site, requiring the developer to work from one of the company's offices in Aurora, Colorado, or Herndon, Virginia. This is common for roles requiring access to classified networks or sensitive government systems.

Office Location(s):

• Aurora, Colorado

Workspace Context:

• The work environment is described as collaborative, iterative, and fast-paced, typical of modern software development teams.

• Developers will have access to necessary development tools, hardware, and potentially specialized software required for government projects.

• The emphasis on collaboration suggests opportunities for direct interaction with team members, fostering knowledge sharing and problem-solving.

Work Schedule:

• A standard 40-hour work week is expected, typical for full-time employment.

• Given the nature of government contracts, there may be periods requiring extended hours or flexibility to meet project deadlines, though this would typically be communicated and managed by project leads.

📝 Enhancement Note: The on-site requirement is a critical factor for security clearance and access to necessary government infrastructure. The collaborative and iterative environment is designed to foster rapid development and problem-solving, which is essential for the fast-paced nature of government contracting work.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A recruiter or hiring manager will likely conduct an initial phone screen to assess basic qualifications, experience, and interest in the role and company.

• Technical Interview(s): Expect one or more technical interviews, which may include:

  • Live Coding: Practical exercises to assess JavaScript/TypeScript proficiency, problem-solving skills, and algorithmic thinking.
  • System Design/Architecture: Discussions about how to design and build scalable, maintainable UI components or applications.
  • Behavioral Questions: Scenarios assessing teamwork, conflict resolution, and adaptability in a professional setting.
  • Portfolio Review: A dedicated session to walk through selected projects from your portfolio, explaining your contributions, technical decisions, and outcomes.

• Security Clearance Verification: This is paramount. The process will involve thorough background checks and verification of your active TS/SCI clearance.

• Final Interview: Potentially with senior leadership or key project stakeholders to discuss cultural fit and long-term alignment.

Portfolio Review Tips:

• Curate Strategically: Select projects that best showcase your UI development skills, particularly those involving complex interfaces, data visualization, or challenging technical problems.

• Highlight Your Role: Clearly articulate your specific contributions, the technologies used, and the challenges you overcame. Quantify achievements whenever possible (e.g., "improved load time by 20%").

• Showcase Testing: Include examples of how you implemented unit and end-to-end tests. Discuss your testing philosophy and its impact on code quality.

• Demonstrate Collaboration: Be prepared to discuss how you worked with designers, back-end developers, and other team members.

• Technical Depth: Be ready to explain the "why" behind your technical decisions, not just the "what."

Challenge Preparation:

• Coding Challenges: Practice common JavaScript/TypeScript coding problems, focusing on data structures, algorithms, and DOM manipulation. Familiarize yourself with frameworks like React or Angular if you have experience.

• UI Design Principles: Review user-centered design principles and common UI patterns.

• Testing Frameworks: Refresh your knowledge of testing tools like Jasmine, Karma, or Cypress.

• Security Awareness: Understand basic secure coding practices relevant to front-end development, especially concerning data handling and potential vulnerabilities.

📝 Enhancement Note: The security clearance is a non-negotiable requirement and will be a primary focus throughout the hiring process. Candidates should be prepared to discuss their clearance status and willingness to undergo further vetting. The portfolio review is an excellent opportunity to demonstrate practical application of skills and problem-solving abilities.

🛠 Tools & Technology Stack

Primary Tools:

• Programming Languages: JavaScript, TypeScript

• UI Frameworks: Experience with modern frameworks such as React, Angular, or Vue.js is expected, though not explicitly named.

• Version Control: Git is a mandatory requirement.

• Project Management: Jira is a preferred tool for workflow management.

Analytics & Reporting:

CRM & Automation:

Preferred Visualization & Styling Tools:

• Visualization: D3.js, Cesium (for advanced data visualization)

• Styling: SCSS, Bootstrap

Testing Tools (Preferred):

• Unit Testing: Jasmine, Karma, Vitest

• End-to-End Testing: Cypress

📝 Enhancement Note: The technology stack emphasizes modern front-end development practices. Proficiency in JavaScript/TypeScript and experience with common frameworks are essential. The preferred tools (D3.js, Cesium, testing frameworks) indicate a desire for developers who can handle complex visualizations and ensure high code quality through robust testing.

👥 Team Culture & Values

Operations Values:

• Innovation for Impact: A drive to build innovative solutions that directly address complex challenges for national security and intelligence.

• Collaboration & Trust: A strong emphasis on teamwork, open communication, and mutual trust to achieve mission objectives.

• Technical Excellence: A commitment to high-quality code, rigorous testing, and continuous learning to maintain a leading edge.

• Integrity & Security: Adherence to the highest standards of ethical conduct and security protocols, crucial for working with sensitive information.

• User Focus: Dedication to creating intuitive and effective user experiences that empower end-users in demanding operational environments.

Collaboration Style:

• Cross-Functional Integration: Active collaboration with back-end engineers, designers, product managers, and potentially client representatives to ensure cohesive product development.

• Agile & Iterative: Embracing an iterative development process with regular feedback loops and adaptability to changing requirements.

• Knowledge Sharing: A culture that encourages sharing of best practices, technical insights, and lessons learned among team members.

• Problem-Solving Orientation: A collective approach to tackling complex technical challenges, leveraging the diverse expertise within the team.

📝 Enhancement Note: The company culture is shaped by its mission-critical work. Expect a professional environment that values technical prowess, teamwork, and a strong sense of responsibility. The emphasis on collaboration and innovation is key to solving the tough problems faced by their clients.

⚡ Challenges & Growth Opportunities

Challenges:

• Security Environment: Navigating the complexities of working within a highly secure environment, including strict protocols and potentially limited access to external resources.

• Complex Requirements: Developing UIs for sophisticated enterprise tools that must meet stringent functional and performance requirements for intelligence and defense users.

• Rapid Iteration: Adapting quickly to evolving project needs and incorporating feedback in a fast-paced, iterative development cycle.

• Technology Evolution: Staying current with rapidly advancing front-end technologies while also ensuring compatibility and security within established government systems.

Learning & Development Opportunities:

• Advanced UI/UX Techniques: Opportunities to deepen knowledge in areas like complex data visualization, responsive design, and accessibility standards.

• Secure Development Practices: Gaining expertise in secure coding principles and practices relevant to government and defense applications.

• Cross-Training: Potential to learn about back-end technologies, cloud infrastructure, or DevOps practices within the company's technology ecosystem.

• Industry Conferences & Certifications: Support for attending relevant tech conferences or pursuing certifications that enhance UI development skills and industry knowledge.

• Mentorship: Access to experienced senior developers and technical leads who can provide guidance and career advice.

📝 Enhancement Note: The challenges in this role are often tied to the high stakes of the work being done. Growth is typically achieved by mastering these challenges, expanding technical depth, and taking on increasing responsibility within critical projects.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex UI feature you developed. What were the challenges, your approach, and the outcome?" (Focus on problem-solving, technical implementation, and quantifiable results).

• "How do you ensure the quality and reliability of your front-end code? Discuss your experience with unit and end-to-end testing." (Highlight testing methodologies, tools, and their impact).

• "Walk us through your process for collaborating with designers and back-end developers to deliver a new feature." (Emphasize communication, workflow, and integration strategies).

Company & Culture Questions:

• "What interests you about Two Six Technologies and our work with the intelligence community/DoD?" (Research the company's mission and recent projects).

• "How do you handle working in a fast-paced, iterative environment with evolving requirements?" (Demonstrate adaptability and a proactive approach).

• "Describe a time you disagreed with a team member or technical lead. How did you resolve it?" (Focus on professional conflict resolution and collaboration).

Portfolio Presentation Strategy:

• Structure: Organize your portfolio by project. For each project, clearly state the problem, your role, the technologies used, your specific contributions, the challenges faced, and the results achieved (quantify if possible).

• Code Snippets: Prepare to share and discuss key code snippets that demonstrate your JavaScript/TypeScript skills, framework usage, or innovative solutions.

• Testing Emphasis: If applicable, showcase examples of your testing approach within your projects.

• Conciseness: Be prepared to present your most relevant projects within the allocated time, focusing on impact and technical depth.

• Engagement: Be ready to answer detailed questions about your projects and your decision-making process.

📝 Enhancement Note: Your ability to clearly articulate your technical contributions, demonstrate problem-solving skills, and align with the company's mission and security requirements will be key. Be prepared to discuss your TS/SCI clearance status and any relevant experience working in secure environments.

📌 Application Steps

To apply for this UI Developer position:

• Submit your application through the provided link on the Two Six Technologies careers page.

• Portfolio Customization: Tailor your resume and portfolio to highlight your JavaScript/TypeScript experience, UI development skills, testing methodologies, and any experience with government or defense projects.

• Resume Optimization: Ensure your resume clearly states your years of experience, education, and specific technical skills, using keywords relevant to UI development and the listed requirements. Explicitly mention your active TS/SCI clearance.

• Interview Preparation: Practice answering technical questions, behavioral scenarios, and be ready to present your portfolio effectively, focusing on your contributions and problem-solving approaches.

• Company Research: Thoroughly research Two Six Technologies, their mission, and their impact in the defense and intelligence sectors. Understand their commitment to innovation and security.

⚠️ 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.