Propulsion Engineer II - Engine Design

Firefly Aerospace; Bertram (TX); On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Health benefits

Dental benefits

Vision benefits

Relocation assistance

Educational reimbursement

Short-term disability

Flexible PTO

Job summary

Firefly Aerospace is seeking a Design Engineer for Alpha Engines to own CAD models and large engine assemblies, ensuring robust design data and manufacturability. You will develop and maintain detailed drawings with GD&T, manage configuration and BOMs in the PLM system, and collaborate across manufacturing, quality, and suppliers.

The role emphasizes expert CAD with 3D modeling of complex assemblies, GD&T, and knowledge of manufacturing processes.

Qualifications

• B.S. in Mechanical, Aerospace, or related field or equivalent design/drafting experience.
• 1–3 years of mechanical hardware design experience.

Responsibilities

• Own and manage CAD models and large assemblies for Alpha engine hardware.
• Create, release, and review manufacturing drawings with GD&T per ASME Y14.5.
• Maintain configuration integrity and BOMs in PLM; support change control.
• Collaborate with manufacturing, quality, and suppliers to ensure manufacturability.

Skills

3D CAD

GD&T

ASME Y14.5

Modeling large assemblies

Configuration management

Manufacturing knowledge

Problem solving

Communication

Education

B.S. in Mechanical/Aerospace or related

1–3 years hardware design experience

Tools

Siemens NX

Teamcenter

PLM systems

NX Open / scripting

Job description

ABOUT FIREFLY AEROSPACEFirefly 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.About the RoleThe Alpha Engines team is responsible for the design, integration, and operation of the Reaver and Lightning engines that power the first and second stages of Firefly’s Alpha launch vehicle.As a Design Engineer for Alpha Engines, you will own the CAD of the large engine assemblies, manage configuration and revision control, develop and implement proper design standards and processes, assist the team with translating the design intent of their hardware into producible, well-toleranced models and drawings, and be the team’s go-to expert for CAD and GD&T.This role requires expert command of CAD and GD&T, meticulous attention to detail, extreme ownership of the design data that drives manufacturing and inspection, and clear communication with cross-functional partners including propulsion, systems, production, and quality. The successful candidate will be a self-starter who enjoys challenging assumptions, thrives in a fast-paced development environment, and seeks to make impactful contributions to Firefly’s mission.ResponsibilitiesOwn and manage the CAD models and large, multi-level assemblies for Alpha engine hardware, maintaining assembly structure, mates, and configuration integrity as the design maturesCreate, release, and review detailed manufacturing drawings with appropriate GD&T that properly communicates design intent per ASME Y14.5Analyze tolerance stackups across assembliesEstablish and enforce CAD best practices, modeling standards, templates, and assembly structures that keep large assemblies robust, performant, and maintainableManage configuration, revision, and change control of models, drawings, and bills of materials within the PLM system, including release workflowsCollaborate with manufacturing, quality, and suppliers to ensure drawings are manufacturable and inspectable, and support disposition of non-conformancesSupport design reviews with up-to-date model and drawing deliverablesLead development of design concepts that reduce part count, complexity, cost, and lead time while preserving design intent and maximizing reliabilityProvide hands-on CAD and GD&T support to the broader Alpha Engines teamQualificationsRequiredB.S. in Mechanical, Aerospace, or a related engineering discipline, or equivalent design and drafting experience1-3 years of experience in mechanical design of hardwareExpert proficiency with 3D CAD, including the modeling and management of large, complex assemblies (Siemens NX strongly preferred)Strong command of GD&T, tolerancing, and ASME Y14.5, and the ability to produce complete, manufacturable, and inspectable engineering drawingsExperience with PLM and configuration management tools (Teamcenter preferred), including formal revision and change controlExperience performing tolerance stackups and fit, clearance, and interference analysis across assembliesWorking knowledge of manufacturing and inspection methods (precision machining, castings/forgings, additive manufacturing, welding, sheet metal, assembly, and NDT) and design for manufacturabilityDeep knowledge of engineering fundamentals and a demonstrated history of applying first principles to arrive at simple, robust solutionsExcellent problem-solving, communication, and technical writing skillsProven ability to rapidly develop solutions with partially defined or evolving requirementsDesired QualificationsAdvanced degree in Mechanical Engineering, Aerospace Engineering, or an equivalent field5+ years creating flight hardware CAD and drawings for launch vehicle, spacecraft, or liquid rocket engine propulsion systemsExperience administering or customizing NX and Teamcenter (templates, standards, item types, and release workflows)Familiarity with Python, NX Open, or other scripting to automate CAD and drawing tasksExperience with model-based definition (MBD) and GD&T-driven inspection, including CMM and first-article inspectionIn-depth knowledge of cryogenic, high-pressure, or high-temperature hardware and compatible material selectionProven experience reducing the complexity of large integrated assemblies to reduce part count, cost, and lead timeDemonstrated experience supporting the full hardware lifecycle, from blank-sheet design through applicationFirefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, relocation benefits, educational reimbursement, short term disability, and flexible PTO options.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.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.