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Frontend Software Engineer
CX2
Software Engineering
El Segundo, CA, USA
Posted on May 23, 2025
CX2 is a next-generation defense technology company founded to deliver spectrum dominance for the United States and our allies. CX2’s AI-enabled hardware and software platforms detect, disrupt and defend the electromagnetic spectrum across land, air, sea and space domains.
CX2 is seeking an experienced front end software engineer to enhance the UI/UX of our electromagnetic spectrum intelligence and effects management platform. In this role, you will be responsible for curating soldier-facing mobile and web interfaces, present high volume sensor data in real time, and shipping highly performant geospatial applications. Your work will help deliver a full stack platform to seamlessly visualize, orchestrate, and manage CX2’s sensor and effector systems across any battlefield. As a key member of CX2’s foundational engineering team, your expertise will direct the evolution of our core software stack, deepen our engineering culture, and deliver powerful electromagnetic warfare capabilities. This role will be based at our company HQ in El Segundo, CA.
Overall Responsibilities
- Empathetic User Experiences: Carefully curate intuitive interfaces and workflows that surface immediately actionable spectrum insights, compound the effectiveness of a single EW operator, and minimize cognitive load on users.
- Dynamic, Low Latency Applications: The electromagnetic battle space changes rapidly, our platforms should as well. You’ll prioritize both low latency and rich interactivity as you build, but you’ll also understand when and how to handle tradeoffs in imperfect conditions.
- Mobile and Web Functionality: Users will leverage CX2 from both touchscreen mobile devices and larger computers with various network and compute capacity. Optimizing performance and usability for a variety of form factors and hardware requires careful resource management, continuous evaluation of new tools and frameworks, and detailed software observability.
Required Qualifications
- Minimum 4 years of experience shipping highly performant, data-intensive front end software applications.
- Expertise with React, JavaScript/TypeScript and CSS, Vite, Jest/Vitest and Playwright.
- Demonstrated ability to build products from the ground up, translate customer problems to well-scoped engineering tasks, determine task priority and sequencing, and operate under limited or ambiguous requirements.
- Strong fluency with state management, responsive design, and performance optimization.
- Proficiency maintaining design systems, and component libraries.
- Ability to work extended hours and/or weekends as needed for mission critical deadlines.
ITAR Requirements
- To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.
Bonus Points
- Experience with APIs (REST, GraphQL, WebSocket).
- Familiarity with web security, authentication, and authorization.
- Experience developing applications that function offline or do not require constant internet access (PWAs).
- Proficiency with responsive web experiences.
What We Offer
- Competitive salary, stock options and benefits, including health, vision and dental.
- 401K enrollment at 90 days.
- Generous PTO + most Federal Holidays observed.
- Professional growth and development opportunities.
- Collaborative and inclusive work environment.
- High levels of responsibility and autonomy.
- Access to the latest tools and technologies as well as the hardest problems in electronic warfare.
CX2 is a next-generation defense technology company, headquartered in El Segundo, California. Our mission is to secure spectrum dominance for the United States and our allies, by building AI-enabled hardware and software platforms to detect, disrupt and defend the electromagnetic spectrum across land, air, sea and space. Founded by a team of veteran entrepreneurs, with backgrounds from Meta, SpaceX, Epirus and a16z, we are backed by the leading venture investors in the defense ecosystem.
Equal Opportunity Employer
CX2 is committed to equal employment opportunity. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, disability, veteran status, or any other protected characteristic under federal, state, or local law, including those with a criminal history, in compliance with the CA Fair Chance Initiative for Hiring Ordinance.
To view CX2's privacy policy, please visit: https://www.cx2.com/privacy