Mid-Level Frontend JavaScript Software Engineer (Hybrid) in San Antonio

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Job DescriptionJob Description

X-Bow Systems is expanding and looking to fill a remote position for a Mid-Level Frontend JavaScript Software Engineer.

As an employee at X-Bow, you will serve a critical role in helping us execute advanced technology projects and programs for the U.S. Department of Defense (DoD), other government agencies, commercial customers and internal R&D initiatives. We are seeking a talented and motivated Frontend JavaScript Software Engineer (Mid-Level) to join our development team. You'll be responsible for building responsive, scalable, and maintainable web applications using modern JavaScript frameworks. You should have a solid foundation in frontend development principles, care deeply about user experience, and be comfortable collaborating with designers, backend engineers, and product stakeholders. As a key member of a small, dynamic, and highly skilled team, you will be expected to actively collaborate with others as well as work independently to accomplish assignments and responsibilities successfully.

This position is located in Luling TX and classified as hybrid.

Responsibilities

• Develop and maintain user-facing features with clean, well-documented JavaScript (ES6+)
• Translate UI/UX design wireframes into high-quality code
• Ensure the technical feasibility of UI/UX designs
• Build reusable code and libraries for future use
• Optimize applications for maximum speed and scalability
• Work closely with backend developers to integrate APIs and ensure seamless functionality
• Participate in code reviews and contribute to best practices
• Debug and resolve performance and usability issues
• Collaborate with QA engineers to write testable code and verify application behavior
• Stay current with emerging frontend technologies and propose their adoption where appropriate

Qualifications

• 3–5 years of professional experience in frontend development
• Strong proficiency in JavaScript, including ES6+ syntax and best practices
• Experience with HTML5, CSS3, and responsive web design
• Proficiency in one or more frontend frameworks such as React, Vue, or Angular
• Experience with version control systems, especially Git
• Understanding of RESTful APIs and asynchronous request handling (e.g., fetch, axios)
• Familiarity with frontend build tools such as Webpack, Vite, or similar.
• Ability to write unit and integration tests using tools like Jest, React Testing Library, or Cypress
• Comfortable working in agile teams using tools like Jira, GitHub/GitLab, and CI/CD pipelines
• Must be able to obtain and maintain a Secret clearance
• Must be a US Persons as defined by § 120.62 of the ITAR

Soft Skills

• Strong communication and collaboration abilities
• Proactive mindset with a willingness to take ownership
• Passion for clean, maintainable, and testable code
• Problem-solving skills and attention to detail
• Ability to learn quickly and adapt to changing requirements

X-Bow Launch Systems, Inc. (pronounced "Crossbow") is a U.S. defense technology and rocket propulsion company that has developed an innovative, low-cost method to manufacture solid rocket motors. Our propulsion technology, space launch, and modular boost platforms make us a unique and highly desirable aerospace supplier to the defense and security industries.

General Disclosure

X-Bow Launch Systems, Inc. is an Equal Opportunity Employer; employment with X-Bow Launch Systems, Inc. is based on merit, competence, and qualifications and will not be influenced in any manner by , , , , /, veteran status, status, , , , marital status, mental or physical or any other legally protected status.

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