Frontend Developer Jobs in Leesburg, VA (NOW HIRING)

Halvik Corp delivers a wide range of services to 13 executive agencies and 15 independent agencies. Halvik is a highly successful WOB business with more than 50 prime contracts and 500+ professionals delivering Digital Services, Advanced Analytics, Artificial Intelligence/Machine Learning, Cyber Security and Cutting-Edge Technology across the US Government. Be a part of something special!

Provide solutions supporting front-end requirements and features. Capable of coordinating and delivering user interface and experience across USPTO for Patent Center modules. Participate in design meetings, understand complex architectures and integrations. Ensure code quality through code reviews.

Work with USPTO Product Managers and UX designers to translate requirements and business objectives into complete user interfaces. Experienced in UI/UX design and development, user sessions, wireframes, 508 compliance, browser compatibility, coding.

• Collaboration: Work with clients, key stakeholders, as well as cross functional teams.
• Technical Performance: Front end expertise to build project platforms using TypeScript to develop rich User Interfaces. Designs wireframes based on Bootstrap 4 designed for Angular. Use RxJS to deal with async implementation and call backs. Use Angular forms to build reactive forms. Ensures the application is covered with unit tests, and is 508 compliant.

• Education: Bachelor's Degree in Computer Science, IT or related field experience
• Experience: 5+ years of experience
• Modern JavaScript & TypeScript: Fluency in Angular 18+, asynchronous patterns (Promises, async/await), closures, event loops, and this binding. Strong TypeScript capability, including generics and utility types.
• HTML5 & DOM API: Understanding of semantic HTML and the browser's rendering pipeline.
• CSS & Layouts: Understanding of responsive design using Flexbox and CSS Grid, along with modern features like CSS Container Queries.
• Framework Expertise: Proficiency with Angular. Candidates must understand framework-specific rendering lifecycles (e.g., avoiding unnecessary re-renders). Proficiency in understanding State Management.
• Accessibility Standards: Ability to use semantic HTML, WAI-ARIA attributes, and manage focus for keyboard navigation. Custom control accessibility is also critical.
• Web Security: Preventing Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), and implementing secure authentication patterns (e.g., HTTP-only cookies vs. Local Storage).
• Troubleshooting expertise: Strong Angular troubleshooting requires deep debugging of change detection, RxJS, routing, forms, performance, builds, and API issues, plus clear triage, root-cause analysis, and effective communication of fixes.
• Testing Strategies: Unit, integration, and End-to-End (E2E) testing using tools like Jest, Vitest. Candidates should understand what and how to test behaviors instead of implementation details.
• System Design Reasoning: Ability to decompose complex UI problems, define API interfaces, and plan for data models before writing code
• Compliance:Must be eligible to obtain Public Trust

• Backend knowledge of Java, Spring Boot and Node.js integration
• Understanding of AWS architecture and AI technologies

• Company-supported medical, dental, vision, life, STD, and LTD insurance
• Benefits include 11 federal holidays and PTO
• Eligible employees may receive performance-based incentives in recognition of individual and/or team achievements.
• 401(k) with company matching
• Flexible Spending Accounts for commuter, medical, and dependent care expenses
• Tuition Assistance
• Charitable Contribution matching

Halvik'spay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Halvik Corp is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.