Jobs at Firefly Aerospace

Supports month-, quarter-, and year-end general ledger close processes, prepares journal entries and financial reporting, maintains internal control documentation, assists with audits, performs financial analysis, and collaborates cross-functionally. Requires a bachelor’s degree in Accounting or Finance, at least two years of progressive accounting experience preferred, advanced Excel and ERP skills, and familiarity with SOX-compliant environments. CPA certification or active pursuit is preferred.

Own turbopump hardware across its lifecycle, from requirements and fluid/mechanical design through analysis, manufacturing, testing, qualification, and flight operations. Lead turbomachinery design improvements, first-principles modeling, tolerance analysis, test planning, data review, anomaly resolution, and system-level trade studies. Support assembly, quality, non-conformance disposition, engine testing, stage testing, and launch operations while serving as the Alpha engine turbomachinery subject matter expert.

Develops, qualifies, and continuously improves CNC and KUKA robotic machining processes for aerospace composite structures. Responsibilities include toolpath programming, robotic simulation, tooling and fixturing, workholding, process capability, inspection, troubleshooting, documentation, nonconformance resolution, equipment implementation, and production support. The engineer partners with design and manufacturing teams to deliver safe, high-quality, cost-effective processes meeting demanding aerospace tolerances and schedules.

Lead and mentor a team to design and troubleshoot instrumentation and control systems for launch vehicles while managing project milestones and budgets.

Designs, develops, tests, qualifies, and supports propulsion valves, regulators, and actuators across their full product lifecycle. Leads design reviews, qualification and acceptance testing, failure investigations, nonconformance resolution, production support, and cross-functional hardware delivery. Develops simulation-based design methods, validates hardware through testing, standardizes solutions, and improves cost, reliability, yield, and manufacturability for aerospace propulsion systems.

Designs, analyzes, builds, and commissions fluid ground support equipment for launch sites, test stands, and production facilities. Responsibilities include developing P&IDs, sizing components, creating CAD and bills of materials, procuring hardware, supporting fabrication and installation, troubleshooting with technicians and welders, leading design reviews, and supporting activation at test and launch sites. Systems include cryogenic, propellant, incompressible, pneumatic, hydraulic, and high-pressure gas applications.

Designs, analyzes, builds, and commissions fluid ground support systems for launch sites, test stands, and production facilities. Responsibilities include P&IDs, component sizing, CAD, bills of materials, procurement, fabrication support, installation, testing, design reviews, troubleshooting, mentoring, and technical leadership. Systems include cryogenic, propellant, incompressible, pneumatic, hydraulic, and high-pressure gas systems. The role requires travel to support ground-system construction and activation.

Designs and maintains infrastructure-as-code, CI/CD pipelines, automation, monitoring, and Linux-based systems across development, staging, and production. Troubleshoots infrastructure and deployment issues, supports engineering teams, performs root-cause analysis, responds to incidents, manages Git workflows, and implements security and compliance controls. Participates in on-call support and collaborates with IT, software engineering, systems engineering, and security teams.

Leads a 15+ person mechanical engineering team responsible for ground support equipment, test stands, launch infrastructure, structural systems, hydraulic equipment, and integration hardware. Oversees design, FEA, structural analysis, project delivery, budgets, vendors, commissioning, operational support, technical reviews, standards, and continuous improvement. Partners across engineering, manufacturing, launch operations, procurement, customers, and executive leadership while ensuring compliance with applicable engineering and aerospace standards.

Designs, implements, monitors, and troubleshoots campus, datacenter, WAN, firewall, and mission-critical network infrastructure. Manages network upgrades and migrations, improves resilience and performance, develops automation, and supports launch and spacecraft vehicle networks. Collaborates with IT and engineering teams, resolves high-risk issues, maintains documentation, and conducts network assessments. The role is fully onsite in Briggs, Texas and requires substantial networking experience, including routing, switching, security, automation, and network monitoring.

Manage cybersecurity authorization and compliance for mission-critical space and enterprise systems. Lead RMF processes, ATO packages, SSPs, POA&Ms, SARs, continuous monitoring, control assessments, STIG validation, vulnerability remediation, and CMMC/NIST compliance. Translate national security requirements into system controls, support engineering reviews, coordinate with system owners and Authorizing Officials, and brief executives and government customers. The role also supports DCSA assessments, security audits, incident response, and secure system development.

Designs, builds, tests, and deploys AI-powered tools and applications supporting manufacturing and business operations. Develops quality-control and production-automation systems, MLOps and model-evaluation pipelines, data pipelines, APIs, and integrations. Partners with business and technical teams, coordinates infrastructure needs, conducts system audits, creates documentation, troubleshoots issues, and improves AI/ML capabilities within an Agile/Scrum environment.

Leads end-to-end execution of $1M–$20M+ capital projects, including rocket test stands, launch sites, and test infrastructure. Serves as technical arbiter across engineering disciplines, manages scope, schedules, budgets, risks, contractors, and cross-functional teams, and drives design reviews through commissioning. Reviews technical deliverables, coordinates instrumentation and safety systems, communicates with executives, and ensures compliance with aerospace, construction, and safety standards. Travel to project sites and support for critical milestones are required.

Develop and integrate critical C++ platform software, firmware, SDK components, libraries, APIs, and onboard applications for spacecraft systems. Work with embedded Linux, sensors, cameras, hardware buses, networking, multithreaded software, and heterogeneous compute platforms. Support perception integration, simulation, hardware and software testing, spacecraft integration, mission operations, system-level debugging, architecture decisions, technical reviews, and engineering mentorship.

Leads spacecraft systems engineering across design, fabrication, testing, launch, and mission operations. Owns system architectures, requirements, interfaces, technical budgets, verification plans, design reviews, risk management, and configuration control. Resolves test failures and nonconformances while coordinating hardware, software, manufacturing, integration, and operations teams. Supports offsite testing and lunar mission operations, including extended shifts. Requires deep interdisciplinary aerospace expertise and extensive spacecraft lifecycle experience.

Coordinates procurement, fabrication, assembly, testing, coating, and commissioning of ground support equipment for aerospace programs. Improves work-order processes, manages suppliers and schedules, supports make-or-buy decisions, reconciles design intent with as-built hardware, participates in design reviews, creates manufacturing bills of materials and RFQs, manages inventory, and dispositions nonconformances. The role works closely with engineers, technicians, welders, purchasers, contractors, and leadership at an on-site rocket manufacturing facility.

Design and develop tooling, fixtures, and production equipment for aerospace composite components. Optimize and implement manufacturing processes, drive continuous improvement and quality control, resolve nonconformances, create work instructions, mentor engineers, and collaborate with cross-functional teams to meet cost, schedule, and quality goals for composite rocket hardware.

The Senior Hardware Design Engineer will lead circuit card development, collaborate with teams on avionics platforms, and troubleshoot designs for space applications.

The Propulsion Engineer II will design, develop, and deliver propulsion components, manage product lifecycle, and lead cross-functional teams for high-performance valve systems.

As a Spacecraft Systems Engineer II, you will develop spacecraft systems, manage technical budgets, validate architecture, and ensure operational efficiency for space missions.