SECTION I · THE BRIEF
Brief #32906Updated 03 NOV 2026LOS ANGELESLeverY COMBINATOR
Employbl Company Profile

Sales Development Representative

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
Company size
20–50
Posted
Today
Via
Lever
Section II · Full ProfileFree with an account
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Headcount & which departments are hiringLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked

Free · 2 minutes · the funding and stack behind this role

Sales Development Representative

Epsilon3· Los AngelesView company profile


Job title
Sales Development Representative
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.

As an SDR at Epsilon3, you won't just be dialing numbers - you will be the primary driver of pipeline growth for groundbreaking companies. You’ll serve as the front line of our revenue organization, engaging engineers, operations leaders, and executives across aerospace, defense, and advanced manufacturing.

If you thrive in a fast-paced environment, love breaking down complex technical software for prospective buyers, and get fired up by hitting and exceeding pipeline targets, this is your launching pad.
Responsibilities
  • Drive Outbound Pipeline: Proactively prospect and engage key decision-makers across email, phone, LinkedIn, and industry events to build high-quality outbound opportunities.

  • Qualify & Convert: Assess inbound interest quickly, evaluate technical fit, and turn curiosity into qualified pipeline for our Account Executives and Leadership team.

  • Master the Tech Stack: Leverage tools like Salesforce/HubSpot, Outreach, LinkedIn Sales Navigator, and Fathom to execute hyper-personalized outreach campaigns at scale.

  • Partner with GTM Leadership: Work hand-in-hand with Sales and Marketing to refine messaging, test new angles, and hone our go-to-market playbook.

  • Own Your Metrics: Track, analyze, and optimize your activity performance. You’ll know your numbers inside out and constantly test ways to improve conversion rates.

  • Become a Subject Matter Expert: Build a deep understanding of our software, customer workflows, and the evolving frontier of hardware, defense, and space tech.

  • Basic Qualifications
  • Proven Track Record: 1+ years of B2B SaaS sales or business development experience, with a history of consistently meeting or exceeding quota.

  • Technical Acumen: Ability to speak comfortably to technical personas. A STEM degree, engineering background, or past experience selling complex SaaS solutions is highly preferred.

  • Exceptional Communication: Top-tier written and verbal skills with a talent for persuasive copywriting.

  • Tech Stack Fluency: Hands-on experience with CRMs (Salesforce/HubSpot) and sales engagement tools (Outreach, SalesLoft, Apollo, etc.).

  • Relentless Drive & Curiosity: Self-motivated, coachable, resilient, and constantly seeking ways to level up your craft.

  • Clearance Eligibility: U.S. Citizenship is required for this role (future security clearance may be required due to the nature of our customer base).

  • Bonus Points If You Have
  • Worked in aerospace, defense, and advanced manufacturing domain

  • Engineering pedigree

  • View job listing ↗
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    Epsilon3 headquarters

    Los Angeles, CA

    Company size

    20–50 employees

    Founded

    2021

    Total raised

    $18,825,000

    View company profile ↗

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    Funding rounds