SECTION I · THE BRIEF
Brief #70646Updated 14 MAY 2026LOS ANGELES, CALeverY COMBINATOR
Employbl Company Profile

Senior Product Designer

Epsilon3 is building the future of spacecraft operations software. If you’re excited about space, join our team! https://angel.co/company/epsilon3

Location
Los Angeles, CA
Company size
20–50
Posted
1mo ago
Via
Lever
Section II · Premium ProfileMembers only
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked

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Senior Product Designer - Epsilon3

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Job Title
Senior Product Designer
Job Location
Los Angeles
Job Description
Epsilon3 is a multi-product operations management platform revolutionizing the way teams build, launch, and operate spacecraft and other advanced hardware systems.
Launched in 2021, our company is led by engineers from SpaceX, Google, and NASA, who have experience supporting over 100 space missions. Innovative teams at Blue Origin, Rocket Lab, Axiom Space, Firefly Aerospace, and many others depend on our web-based (SaaS) solutions to plan and track high-stakes procedures. We raised a $15M Series A funding round led by Lux Capital, Y Combinator (YC S21), and other world-class investors.
We are looking for a Senior Product Designer to lead the end-to-end design of mission-critical interfaces. You will work at the intersection of human-computer interaction and aerospace engineering, solving complex problems related to real-time telemetry, AI-assisted decision making, and high-stakes procedure management.
As a senior member of the team, you will be helping map the entire service ecosystem— translating research and feedback to service blueprints and into high-fidelity, testable prototypes.
Technical Challenges
  • Human-AI Interaction: Designing intuitive patterns for AI/ML features that boost team efficiency and enable fast, data-driven decisions without sacrificing human agency.

  • Complex Service Blueprints: Mapping multi-user, multi-environment workflows where real-time synchronization and traceability is mission-critical.

  • Data Visualization: Architecting visualizations for high-bandwidth data streams and telemetry that remain legible under high-stress operational conditions.

  • Design for Reliability: Ensuring mission-critical security and reliability within a modern, delightful web and app based (SaaS) environment.

  • Responsibilities
  • Service Design & Information Architecture: Lead the creation of service blueprints and complex user flows that map out the entire lifecycle of a mission.

  • End-to-End Execution: Own the full design cycle: from deep-dive user research and discovery calls to ideation, high-fidelity prototyping, and developer handoff.

  • Prototyping & Testing: Build advanced, data-driven prototypes (using Figma, Framer, or code) to validate complex workflows with users before they hit production.

  • AI Tooling Integration: Research and implement AI-assisted design workflows and advocate for UX patterns that make AI features within the platform transparent and actionable.

  • Design Systems: Contribute to and evolve our specialized design system, ensuring consistency across operational dashboards, procedure tools, and mobile solutions.

  • Collaborative Leadership: Work closely with engineering to ensure technical feasibility and participate in customer discovery to translate raw requirements into elegant solutions.

  • Qualifications
  • 6+ years of experience in Product Design, UI/UX, or Interaction Design, preferably within complex enterprise SaaS, industrial software, or aerospace.

  • Masters or Bachelor’s Degree in HCI, Design, Computer Science, or a related technical field.

  • Expert Prototyper: Proven ability to move from abstract service blueprints to high-fidelity, testable prototypes that simulate real-world data and logic.

  • Systems Thinker: Deep experience in Information Architecture and a track record of simplifying high-density data for professional users.

  • Technical Literacy: Strong understanding of modern web technologies (React, Node.js) and the ability to design for the constraints of real-time, high-security cloud/on-prem environments.

  • Startup Mentality: Comfortable navigating ambiguity, managing multiple concurring projects, and iterating rapidly in a Lean/Agile environment.

  • US Citizenship (future security clearance may be required)

  • Must be located in the US

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    Where this role is based

    Los Angeles, CA

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    Epsilon3 Headquarters Location

    Los Angeles, CA

    View company profile

    Epsilon3 Company Size

    Between 20 - 50 employees

    Epsilon3 Founded Year

    2021

    Epsilon3 Total Amount Raised

    $18,825,000

    Epsilon3 Funding Rounds

    View funding details
    • Series A

      $15M

    • Series A

      $15M

    • Seed

      $2.7M

    • Seed

      $2.7M

    • Seed

      $125K

    • Seed

      $125K

    • Seed

      $1M

    • Seed

      $1M

    Epsilon3's Investors

    Company Collections For Epsilon3