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Senior Staff Software Engineer Fullstack

CesiumAstro

Job Location:

Westminster, CA - USA

Yearly Salary: $ 184000 - 225000

Posted: 21 August 2026 (6 hours ago)

Application Deadline: 18 November 2026

Vacancies: 1 Vacancy

Job Summary

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.

AtCesiumAstro 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 CesiumAstro is the place for you. We are actively seeking passionate collaborative energetic and forward-thinking individuals to join our team.

We are seeking a Staff Software Engineer to support several new space-centric programs across the DoW and IC. We are looking for engineers who thrive in a fast-paced startup environment and enjoy solving hard problems. Our culture is simple: work hard solve real problems build things that matter.

JOB DUTIES AND RESPONSIBILITIES

Build modern full-stack applications in support of space mission systems.
Integrate and modernize legacy space-related ground and flight software.
Develop distributed applications leveraging microservices cloud-native architectures and Distributed Ledger Technology (DLT)/consensus frameworks.
Support on-orbit and ground system integration & test including emulation simulation and interface validation.
Implement DevSecOps pipelines automated testing and secure software practices.
Develop modern UI/UX interfaces for mission operators and analysts.
Work closely with space system engineers mission integrators and operations teams.
Contribute to a mission-focused engineering culture where your ideas truly shape the product.

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

Bachelors degree in Software Engineering Computer Engineering or relevant field.
12 years of relevant software engineering experience.
Demonstrated technical leadership across software modernization or distributed systems
Experience architecting microservices APIs message buses and high-availability systems
Expertise integrating and testing software for space-based or ground mission systems
Ability to mentor junior engineers and guide design decisions
Experience with DoD/IC programs ATO processes or DevSecOps on classified systems
Experience developing in C C# Rust Python or Go.
Experience with SQL/NoSQL database design and integration.
Experience with cloud services (AWS Azure or GovCloud variants).
Experience with GitHub Jira and Confluence.
U.S. Citizenship is required for this position along with the ability to obtain a Secret security clearance.
Ability to travel up to 10%.

PREFERRED EXPERIENCE

Existing security clearance (TS/SCI preferred).
Experience supporting DoD/IC programs.
Experience building software for spacecraft OPS software or flight/ground segment integration.
Experience with high-performance computing distributed processing or real-time systems.
Experience with performance tuning and resource-constrained environments.
Experience with DevSecOps IaC and automated test frameworks.
Familiarity with DLT blockchain or consensus protocols.
Experience with modern UI/UX frameworks (React Vue Svelte Blazor etc.).

$184000 - $225000 a year

CesiumAstro considers several factors when extending an offer including but not limited to the role and associated responsibilities a candidates 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.

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

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro 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 analyzing resumes or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed please contact us.

Required Experience:

Staff IC

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