Proposal Specialist
ApexLos AngelesPosted 2 April 2026
Job Description
Proposal Specialist
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.
We’d love for you to join us on our mission of providing humankind access to the galaxy beyond our planet.
ABOUT THE ROLE
As a Proposal Specialist, you are a critical driver of Apex’s business growth. Through collaborating with Business Development, Product, and Mission Management stakeholders, you will drive Apex’s growth by compiling high-quality and compelling proposals to win contracts. You will work across all of Apex’s markets: US Government, Commercial, and International Government.
You will maintain Apex’s suite of productized proposal templates and content library. Detail-oriented, an effective communicator, and a creative writer, you are capable of transforming complex technical concepts into persuasive proposals, white papers, presentations, and other material. By understanding customer requirements, you will effectively deliver content that aligns with customer business goals/needs.
Apex is fast-paced, and you'll be expected to make decisions independently by weighing many needs and priorities. In this role, you'll wear many hats, arising to new business challenges while growing your skills and domain expertise on the job. We are looking for mission-driven teammates who can jump into any new business pursuit with enthusiasm and operate at a high quality within tight deadlines.
Responsibilities:
- Serve as a primary author of responses to Request for Information (RFIs), Request for Proposal (RFPs), and other new business opportunities.
- Oversee and quarterback the entire proposal lifecycle, and own final delivery of complete proposals including: technical, cost/price, schedule, and other content.
- Translate technical concepts into easily digestible reading materials for a variety of audiences.
- Create persuasive content that showcases product strengths, capabilities, and solutions to address customer needs.
- Take high-level details as well as rough draft content and convert them into high-impact content for proposals.
- Align your work with established guidelines and quality standards.
- Produce high-caliber work on time, every time.
Requirements:
- 2+ years of experience writing, drafting, and editing proposals for US government or other sophisticated aerospace & defense customers
- Experience working with cross-functional teams (engineering, BD, contracts, etc.) under tight deadlines
- Meticulous, proactive, and highly organized
- Clear communicator whether communication is synchronous or asynchronous, in-person or virtual, written or spoken
- Solid writing and editing skills
- Coachable and team-oriented; ability to receive and offer constructive feedback that promotes individual and team success
- Strong organizational skills and ability to manage multiple concurrent deadlines
- Direct experience in spacecraft or spacecraft-adjacent markets (Nice to have)
- Active TS or TS/SCI clearance (Nice to Have)
#LI-JC1
WHY JOIN APEX?
Apex believes in creating a work environment that you look forward to embracing every day. Our employees love working at Apex, and we want you to love it too. We're a fast-growing startup backed by $200M in Series D funding, and we invest heavily in our people from day one.
WHAT WE OFFER FOR ... (truncated, view full listing at source)
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