System Integration Engineering

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge.For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses. These buses hold the payloads of our customers and are flown on launch vehicles.Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society: ranging from earth observation to communications and more.About the RoleApex is seeking a dynamic, organized, and driven Mission Integration Engineer to join our expanding team. As a company at the forefront of space exploration and satellite technology, Apex is looking for an individual capable of independently owning complex spacecraft analysis and serving as the primary liaison between our customers and technical teams to ensure mission success. The Mission Integration Engineer is also responsible for acting as a generalist across our programs to support customer mission integration.Responsibilities:Support space vehicle I&T planning and execution including payload integration, spacecraft level environmental test, and launch vehicle integrationPerform mission analysis, including orbital mechanics, trajectory planning, and spacecraft deployment strategiesServe as the primary technical liaison between internal technical teams and customersAnalyze results of coupled loads analysis (CLA), thermal analysis, and perform electromagnetic compatibility (EMC) assessments.Generate mission specific technical budgets (power, mass, data, pointing, etc)Travel to launch sites for payload integration, system checkouts, and launch rehearsalsWork with mission operations teams to track and maintain spacecraft in its operational orbitSupport the development of technical documentation, integration procedures, and lessons learned to improve future missionsWork with engineering, business development, and external partners to shape future missionsSupport proposals for future missions by defining technical approaches, feasibility studies, and cost estimatesDevelop and maintain customer system-level documentation, including specifications, interface control documents, and system design descriptions.Support requirements analysis, verification, and validation activities to ensure compliance with customer needs and industry standards.Identify and assess technical risks associated with system design, development, and operationPerform system-level failure mode and effects analysis (FMEA) and support reliability engineering effortsCollaborate effectively with multidisciplinary teams, including electrical, mechanical, and software engineers, to ensure system integration and performance.Participate in customer meetings, design reviews, and project status updates.Person status is required as this position needs to access export-controlled data.Bachelor’s degree or higher in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, or a related field.Strong understanding of space systems, launch vehicle mechanics, orbital dynamics, and mission operationsExperience working with prime contractors or government entitiesExperience with CubeSat, small satellite, or rideshare mission integrationFamiliarity with flight software, embedded systems, and space communications protocols (CCSDS, S-band, X-band, etc.).Previous spacecraft, launch vehicle, or payload engineering experienceAdvanced proficiency in Microsoft Excel and other office productivity toolsProficiency in Python, MATLAB, STK, FreeFlyer, GMAT, or other mission analysis tools.Strong interpersonal skills to collaborate effectively across the Apex teamHigh attention to detail with a focus on delivering concise and technical review contentAbility to work in a dynamic, fast-changing environment with shifting priorities and deadlinesWhy Join Apex?We're a fast-growing startup that has raised more than $500M in funding, and we invest heavily in our people from day one.What We Offer For Full-time Employees:Receive equity in Apex, letting you benefit from the work you createBest-in-class healthcare: 100% company-paid medical, dental, and vision for you and your dependents, plus $100k life insurance at no costComprehensive PTO package to reset and recharge - starting at 15 days vacation, growing to 20+ days annually, plus 10 paid holidaysCompetitive 401(k) plan with generous matching - 100% match on first 3%, 50% on next 2%8 weeks paid parental leave plus childcare reimbursement up to $350/day for work-related travelDaily catered lunch and unlimited snacks to keep you fueled throughout the dayVibrant community: Monthly office socials, pickleball tournaments, run club, and gatherings for you and your familyYour dream desk setup and all the tools you need to be your most productive selfWorld-class Playa Vista office with the benefit of in-person collaboration with amazing coworkers and flexibility to integrate work and lifeReal impact opportunity: We celebrate diversity and are committed to creating an inclusive environment for all employees. Candidates and employees are always evaluated based on merit, qualifications, and performance. We will never discriminate on the basis of race, color, 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.