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Python Developer Iii Jobs

Firefly Aerospace

Spheros Environmental

Hybrid

Onsite

Flight Dynamics Engineer III Trajectory Elytra - Careers At Firefly Aerospace	

	

	

	


	
	
	

	
	
	

		 							
	 
		
	
	
	
	
	
	













						
				
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										<p>Career Opportunities with Firefly Aerospace</p>
<p><em><strong>Come be a part of the 21st Century Space Race!</strong></em></p>
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				<div>Careers At Firefly Aerospace</div>								
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		<h2>Flight Dynamics Engineer III (Trajectory), Elytra</h2>	
	
	
			
		
		      			      	<b>Department:</b>
					Aerospace Software Engineering		      					
		      			      	<b>Location:</b>
					Cedar Park, TX<br />					
		      		      		      		      		      		      		



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		<div><p><a><strong>ABOUT FIREFLY AEROSPACE </strong></a></p>

<p>Firefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space � anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24-hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space. </p>

<h1><strong>SUMMARY</strong></h1>

<p>As a Senior Flight Dynamics Engineer specializing in trajectory and maneuver design at Firefly, you will design and optimize spacecraft trajectories and maneuver sequences for operational missions spanning LEO and cislunar space. In this role, you will develop targeting algorithms, create error budgets, and serve as a flight dynamics operator while collaborating with cross-functional teams to translate mission designs into executable operations. This position combines advanced mission design with hands-on operational support while mentoring junior engineers in a fast-paced, mission-critical environment.</p>

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<h1><strong>RESPONSIBILITIES</strong></h1>

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	<li>Optimize spacecraft trajectories to satisfy mission requirements while balancing delta-V budgets, mission duration, and payload constraints</li>
	<li>Design and maintain mission designs from the conceptual phase through the end of spacecraft mission operations</li>
	<li>Develop algorithms to target maneuvers that achieve spacecraft mission objectives</li>
	<li>Create maneuver error budgets and perform sensitivity analysis to assess robustness to execution uncertainties</li>
	<li>Formulate and analyze contingency maneuver plans and abort scenarios for off-nominal conditions</li>
	<li>Interface with cross-discipline teams to translate maneuver plans into executable command sequences and operational procedures</li>
	<li>Serve as a flight dynamics operator for spacecraft missions and perform maneuver reconstruction to improve spacecraft models</li>
	<li>Perform verification and validation of flight dynamics models and software using analytical solutions, benchmarks, flight data, and unit tests</li>
	<li>Author technical documentation and analysis reports that communicate flight dynamics concepts and results to diverse audiences</li>
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<h1><strong>QUALIFICATIONS</strong></h1>

<h2>Required</h2>

<ul>
	<li>Bachelor's degree in aerospace engineering, physics, mathematics, or related field</li>
	<li>5-8 years of experience in spacecraft flight dynamics with significant depth in mission design or maneuver planning</li>
	<li>Experience supporting operational spacecraft missions through multiple mission phases</li>
	<li>Advanced understanding of orbital mechanics theory and applications</li>
	<li>Understanding of spacecraft attitude control and its impact on maneuver execution accuracy</li>
	<li>Strong understanding of targeting and optimization methods</li>
	<li>Knowledge of estimation theory and uncertainty modeling</li>
	<li>Experience in software development and modeling/simulation for spaceflight applications</li>
	<li>Working knowledge of Python and Linux</li>
	<li>Proficiency with one or more commercial trajectory design software tools (STK, FreeFlyer, GMAT, or similar)</li>
	<li>Excellent communication and presentation skills</li>
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<h2>Desired</h2>

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	<li>Advanced degree (master's or PhD) in aerospace engineering, physics, mathematics, or related field</li>
	<li>Expert-level proficiency in STK for spacecraft trajectory design</li>
	<li>Python proficiency and experience with JPL's MONTE software suite</li>
	<li>Software engineering expertise including skills in version control (Git), code review, automated testing, documentation, and CI/CD workflows</li>
	<li>Comprehensive knowledge of spacecraft subsystems and their impact on trajectory design and maneuver planning</li>
	<li>Proven ability to mentor and develop junior engineers while managing technical responsibilities</li>
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<p><strong>Firefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, educational reimbursement, short term disability, and flexible PTO options.</strong></p>

<p><em>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. </em></p>

<p><em>Firefly Aerospace, Inc. is an Equal Opportunity Employer; employment with Firefly is governed based on merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.</em></p>
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Flight Dynamics Engineer III (Trajectory), Elytra

Flight Dynamics Engineer

Design and optimize spacecraft trajectories and maneuver sequences; develop targeting algorithms; support operational missions; mentor engineers.

<p class="MsoNormal"><strong>Staff Hydrogeologist / Environmental Engineer II-III</strong></p>
<p class="MsoNormal"><strong>Location:</strong> Round Rock, Texas (Hybrid Work Option)<br /><strong>Compensation:</strong> $34 - $44/hour </p>
<p class="MsoNormal">Spheros Environmental is seeking a <strong>Staff Hydrogeologist / Engineer II - III</strong> to join our growing team of hydrogeologists and engineers working to develop and manage groundwater supplies within Texas and Oklahoma. The position will primarily focus on quantitative analysis and numerical modeling of groundwater, but will also include opportunities for well design, siting, and oversight and field investigations associated with groundwater level and quality monitoring.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">The successful applicant will show strong quantitative or programming skills and the ability to apply these to solve groundwater problems. Candidates will be considered across a range of experience levels. Successful applicants at the Hydrogeologist / Engineer II level will show aptitude towards these tasks, a drive for learning these skills, and a strong work ethic.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><strong>Key Responsibilities:</strong></p>
<ul style="margin-top:0in" type="disc"><li class="MsoNormal"><strong>Technical Tasks:</strong> Collect and evaluate hydrogeologic data using analytical and numerical methods. Develop or assist in developing conceptual and numerical groundwater models. Write codes or use software tools to analyze the outputs of groundwater models. Prepare or assist in the preparation of reports and technical presentations to communicate findings to clients.</li><li class="MsoNormal"><strong>Sampling & Analysis:</strong> Coordinate field sampling, ensure the safe collection of groundwater, surface water, and soil samples, and collaborate with laboratories. Collect pump test data and evaluate using analytical methods and software. Review geophysical logs and other geological data to assist with well design.</li><li class="MsoNormal"><strong>Field Project Support:</strong> Oversee drilling contractors, manage project deadlines, and prepare regular status updates. Ensure that all tasks are completed in accordance with company Health and Safety Plans. Coordinate with subcontractors, contractors, and clients to ensure smooth project execution and meet deliverables.</li></ul>
<p class="MsoNormal" style="margin-left:0.5in"> </p>
<p class="MsoNormal"><strong>Qualifications:</strong></p>
<ul style="margin-top:0in" type="disc"><li class="MsoNormal"><strong>Education & Experience: </strong>Degree in civil, environmental, or water resources engineering; geology or earth sciences; or related field. Bachelor’s degree with at least two years’ prior experience; or master’s or doctoral degree.</li><li class="MsoNormal"><strong>Licensure/Certification:</strong> Valid driver’s license. Professional Engineer (PE) or Professional Geologist (PG) certification, or the ability to obtain certification preferred. Applicants at the EIT/GIT will be considered at the Hydrogeologist / Engineer II – III level, while those with PE/PG credentials will be considered at the Hydrogeologist / Engineer III – V level.</li><li class="MsoNormal"><strong>Technical Skills:</strong> Strong computer skills and experience with computer programming or numerical modeling. Proficiency in some combination of the following tools is expected: Excel, ArcGIS Pro/QGIS, AutoCAD/Civil 3D, Python, MODFLOW, Groundwater Vistas, FloPy and/or other relevant computer software.</li></ul>
<p class="MsoNormal" style="margin-left:0.5in"> </p>
<p class="MsoNormal"><strong>Why Spheros Environmental?</strong></p>
<ul style="margin-top:0in" type="disc"><li class="MsoNormal"><strong>Flexible Work Environment:</strong> Enjoy the benefits of a hybrid work setup, with one to two days per week working from home.</li><li class="MsoNormal"><strong>Competitive Pay & Benefits:</strong> Pay of $34 - $44 per hour, with bonuses and 401(k) contributions based on company performance. Pay will be commensurate with prior experience and education.</li><li class="MsoNormal"><strong>Professional Growth:</strong> We offer ample opportunities for training and career development.</li><li class="MsoNormal"><strong>Inclusive Culture:</strong> Spheros Environmental is committed to fostering a diverse and supportive work environment.</li></ul>
<p class="MsoNormal"><strong>Apply now! </strong>Spheros Environmental is an equal opportunity employer. </p>
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Staff Hydrogeologist / Environmental Engineer II-III

Hydrogeologist / Environmental Engineer

Bachelor's in civil, environmental, or water resources engineering; geology or earth sciences; 2+ years experience or advanced degree; PE/PG preferred; valid driver's license; programming/numerical modeling skills.

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