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CesiumAstro creates out-of-the-box communication systems for space and airborne platforms.
The Role
Build and modernize full-stack software for space mission systems, including distributed microservices, cloud-native applications, mission-system integration, DevSecOps pipelines, automated testing, and operator-focused UI/UX. The role supports ground and flight software, simulation, emulation, interface validation, and secure classified-system development. Responsibilities include collaborating with space systems and operations teams, making architecture decisions, mentoring engineers, and contributing to DoD and intelligence-community programs.
Summary Generated by Built In
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 CesiumAstro, 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 Senior 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
- Bachelor’s degree in Software Engineering, Computer Engineering, or relevant field.
- 5+ 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.).
CesiumAstro 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.
CesiumAstro 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.
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.
Skills Required
- Bachelor's degree in Software Engineering, Computer Engineering, or a relevant field
- 5+ years of relevant software engineering experience
- Technical leadership in software modernization or distributed systems
- Experience architecting microservices, APIs, message buses, and high-availability systems
- Experience integrating and testing software for space-based or ground mission systems
- Ability to mentor junior engineers and guide design decisions
- Experience with DoD or intelligence-community programs, ATO processes, or DevSecOps on classified systems
- Experience developing in C++, C#, Rust, Python, or Go
- Experience with SQL or NoSQL database design and integration
- Experience with AWS, Azure, or GovCloud cloud services
- Experience with GitHub, Jira, and Confluence
- U.S. citizenship and ability to obtain a Secret security clearance
- Ability to travel up to 10%
- Existing security clearance, with TS/SCI preferred
- Experience supporting DoD or intelligence-community programs
- Experience building spacecraft, operations, or flight/ground-segment software
- Experience with high-performance computing, distributed processing, or real-time systems
- Experience with performance tuning and resource-constrained environments
- Experience with DevSecOps, infrastructure as code, and automated test frameworks
- Familiarity with distributed ledger technology, blockchain, or consensus protocols
- Experience with modern UI/UX frameworks such as React, Vue, Svelte, or Blazor
CesiumAstro Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about CesiumAstro and has not been reviewed or approved by CesiumAstro.
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Healthcare Strength — Health coverage includes medical, dental, vision, life and disability insurance, plus FSAs and mental health benefits. Feedback suggests the health package is comprehensive for a growth-stage aerospace firm.
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Retirement Support — Offerings include a 401(k) with company matching and other retirement-plan elements. Feedback suggests core retirement mechanisms are in place alongside standard financial benefits.
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Leave & Time Off Breadth — Generous PTO, paid holidays, paid sick days, and bereavement leave are included. Feedback suggests time-off options are broad on paper across multiple leave types.
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The Company
What We Do
We build high-throughput, plug-and-play phased array communication payloads for space and airborne platforms. CesiumAstro’s full-stack, multi-mission hardware and software products enable a diverse range of commercial and defense objectives. Full-system engineering design is at the heart of every CesiumAstro product. We deliver high-performance solutions under rapid development timelines.
Why Work With Us
At CesiumAstro, we’re a team. We’re passionate, respectful, and determined colleagues ready to help at a moment’s notice. We’re mentors excited to enable our peers with the knowledge they need to succeed. Together, we’re visionaries committing to building memories that will last a lifetime.
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