Senior Systems Engineer II
CesiumAstro
Austin, United States
October 30, 2025
Apply NowSenior Systems Engineer II
Austin, TX
Engineering – Advanced Product Development /
Full-time /
On-site
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.
In this role, a systems engineer is responsible for utilizing commercial modeling and simulation tools to synthesize conceptual aerospace and defense systems into executable digital models to aid multi-disciplined design teams in quickly and accurately evaluating expected performance against design requirements. This candidate will be expected to build expertise across commercial digital modeling and simulation tools, in particular leveraging Ansys STK (System Tool Kit) software which delivers a physics-based, mission-centric digital design and test environment for analyzing and designing systems across various domains like space, air, sea, and ground missions.
This candidate will be expected to continually expand and build their knowledge and use of this systems modeling and simulation environment while also incorporating external simulation artifacts from other multi-physics modeling and simulation tools commonly utilized by domain-centric design engineering groups such a CFD tools, mechanical CAD solutions, RF systems design and test tools, optics, and many other engineering discipline focus areas.
It will be critically important for this candidate to be able to communicate with colleagues across multi-disciplines and help incorporate their designs, analysis results, and model anticipated system behaviors through a fully integrated digital simulation approach. Familiarity with Model Based Systems Engineering (MBSE) practices is highly desired.
JOB DUTIES AND RESPONSIBILITIES
- Effectively leverage a digital modeling and simulation ecosystem of tools to support the design, test, validation and verification needs of internal project team leaders.
- Proactively identify workflow automations to help establish streamlined processes for repeatable modeling and simulation chains for efficient re-use of established our organization's unique mod/sim techniques.
- Support briefings to design team leaders to demonstrate/share results during design review milestones.
- Proactively investigate interoperability across existing design tools that our engineering organization leverages, and suggest/lead identified improvements to help establish and build our end-to-end digital engineering toolchains.
- Working closely with development and engineering design teams to inject digital modeling and simulation tools into their workflows in non-disruptive ways by helping to lead data pipeline integrations, automations, and routines that increase overall efficiency and shorten design lifecycles.
- Collaborating with software developers, DevOps, and infrastructure teams to ensure application stability and performance.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
- A minimum of 2 years of experience with a bachelor's degree in aerospace engineering, or a related field is required.
- Demonstrable experience or familiarity with digital systems engineering methodologies.
- Familiarity with STK and its modules (e.g., Astrogator, SOLIS, TETK) for digital mission engineering is critical.
- Knowledge of various operating systems, devices, and software applications is expected.
- Proficiency with common engineering scripting languages (MATLAB, Python, Javascript, and similar).
- Familiarity (or ability to gain necessary skills) with general engineering design tools commonly used across disciplines such as Fluids, Electronics, Thermal, Optics, and Mechanical tools such as the Ansys tool suites.
- Experience with Model Based Systems Engineering practices and languages (SysML)
- Proficiency in functional digital systems engineering and understanding of design, test, review methodologies.
- Experience with test case design and execution, as well as defect tracking and reporting tools.
- Strong understanding of product design/test workflows in a commercial production environment
- Excellent analytical and problem-solving skills to interpret technical data and information, and resolve complex issues.
- Ability to perform root cause analysis and develop effective solutions.
- Exceptional written and verbal communication skills are essential for interacting with customers, development teams, and other stakeholders.
- Strong teamwork and collaboration skills to work effectively with diverse teams.
- Customer-focused mindset and commitment to customer satisfaction.
- Organizational skills to manage workload, prioritize tasks, and keep track of documentation and records.
- Ability to manage simulation and process data management holistically and document configuration changes.
- Staying updated with the latest advancements in application design and technology.
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 not through our approved vendor list or Talent Acquisition 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. 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.