Senior Software Engineer II - Fullstack

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At Cesium Astro
, we are developers and pioneers of out‑of‑the‑box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross‑functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands‑on, interactive, and autonomous work, Cesium Astro is the place for you. We are actively seeking passionate, collaborative, energetic and forward‑thinking individuals to join our team.

We are looking for a Senior Software Engineer to lead the design and development of user‑facing applications that power Cesium Astro’s mission‑critical platforms. This role will translate complex requirements into elegant, functional, and scalable UIs, working closely with backend, Dev Ops, and machine learning teams to deliver robust, high‑performance systems.

• Build and maintain user‑facing features for Cesium Astro’s web‑based dashboards and applications.
• Collaborate with backend, Dev Ops, and machine learning engineers to integrate complex data and workflows into intuitive frontends.
• Partner with product and business stakeholders to translate user needs into functional UI solutions.
• Contribute to reusable component libraries to ensure consistent aesthetics and behavior across applications.
• Participate in QA, testing and release cycles to ensure high‑quality, reliable software.
• Provide technical leadership in frontend development, mentoring team members and influencing design decisions.

• Bachelor’s or higher degree in Computer Science, Engineering, or related technical field.
• 6+ years of professional experience building web application frontends.
• Proven track record of leading or independently delivering frontend features in production systems.
• Strong proficiency in JavaScript and Type Script.
• Deep experience with modern frontend frameworks, particularly Vue.js, and tools such as Axios.
• Excellent communication skills with the ability to articulate design and technical choices.

• Experience developing tools that visualise and communicate complex quantitative information.
• Backend development experience, ideally with Python APIs.
• Familiarity with Dev Ops and deploying web applications using infrastructure‑as‑code (e.g., Terraform).
• Experience integrating complex APIs (e.g., Elasticsearch).
• Previous experience in small, fast‑moving teams or early‑stage environments.

Cesium Astro considers several factors when extending an offer, including but not limited to the role and associated responsibilities, a candidate’s work experience, education/training and key skills. Full‑time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.

Cesium Astro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status or any other characteristic protected by applicable federal, state or local law.

Cesium Astro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to Cesium Astro team members will be considered property of Cesium Astro and we will not be obligated to pay any referral fees.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analysing resumes or assessing responses. These tools assist our recruitment team but do not replace human judgement. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.