Episode 25

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Published on:

3rd Dec 2025

How do startups defy the Valley of Death and ignite growth?

The Valley of Death, Part III: Breaking Through the Other Side

In this final part of our Valley of Death series, the VHTB team, Matt Gjertsen of Better Every Day Studios, Brian Mejeur of AdAstra Talent Advisors, and Justus Kilian of Space Capital, break down how space startups can escape the treacherous middle of growth and begin to scale successfully.

After early wins and the slog of the mid-valley, companies reach a critical inflection point: delivering on commitments, scaling operations, and building the leadership capacity to sustain growth. We will outline practical steps, mindset shifts, and structural strategies that distinguish startups that stall from those that soar. From empowering frontline managers to refining processes, and from talent alignment to capital strategy, we talk through how these lessons can be put into practice.

Episode Highlights:

00:00 How to Escape the Valley of Death

01:05 Defining the Exit by Looking at Delivery, Unit Economics, and Investor Perspective  

03:33 Building Managerial Muscle in the Crucial Middle Layer of Leadership  

06:51 Scaling Teams from One-Off Hires to Cohesive Groups  

08:40 Using Process as a Growth Lever While Balancing Structure with Agility  

12:56 Considering Capital Options: Private vs. Public, Predictability, and Liquidity  

15:49 Driving Strategic Growth by Investing in Talent, Technology, and Efficiency  

18:45 Synthesizing the Three Stages through Clarity, Reflection, and Consistency  

21:14 Empowering Leadership to Prepare Teams for Sustainable Growth  

Episode Takeaways

  • Execute Consistently: Deliver on contracts and scale operations while maintaining quality.
  • Invest in Managers: Strong middle management is the connective tissue that turns strategy into execution.
  • Build Processes Thoughtfully: Structure enables efficiency without sacrificing innovation or speed.
  • Foster Open Communication: Align motivations, career paths, and expectations to retain top talent.
  • Strategize Capital: Leverage private and public options wisely to support long-term growth.
  • Empower Leadership Evolution: Prepare executives and managers to adapt roles as the organization scales.

Subscribe to VHTB for more insights on the talent, culture, and finance sides of space startups.

Resources & Links:

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About the Podcast

A VC, a Headhunter, and a Trainer Walk into a Bar
VHTB is your guide to the talent, culture, and capital forces shaping the hard tech startup ecosystem. Each episode, hosts Justus Kilian of Space Capital, Seyka, and Brian Mejeur of AdAstra Talent Advisors, and Matt Gjertsen of BUILT bring stories and lessons from the front lines of building and backing some of the most innovative companies on the planet.

About your hosts

Brian Mejeur

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Founder, CTO/COO, Advisor | Space, Clean Tech & Defense Talent Expert | Ex-SpaceX Engineer | Husband | Dad

Brian is one of the founders of AdAstra Talent Advisors where he functions as CTO and COO while partnering with leading early stage startups in Space, Defense, and Clean Tech.

Having spanned 7 years at SpaceX, a stint at an early stage startup, and holding BS & MS degrees in Aerospace Engineering, Brian’s experience in the trenches as an engineer and in operations allows him to relate first hand to the talent and hiring needs of AdAstra's clients.

Seyka Mejeur

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Founder, CEO, Advisor | Space, Clean Tech & Defense Talent Expert | Pilot | Wife | Mom
(titles not in order of importance)

Relentlessly resourceful and unusually optimistic, Seyka is deeply involved with world-changing startups. As a founder and CEO of AdAstra Talent Advisors, she builds thriving teams in NewSpace, Clean Tech, and Defense - empowering innovation that future generations depend on.

With a passion for relationships and a belief in the power of empowered teams, she helps visionary leaders turn bold ideas into reality.

Justus Kilian

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Justus is a Partner at Space Capital, a seed-stage venture firm investing in space-based infrastructure and their applications. Portfolio companies include SpaceX, Impulse Space, Varda, and Xona. He is active on multiple portfolio company boards and manages the firm’s recruiting platform, Space Talent. Before his current roles, Justus worked at Acumen, a $250M early-stage venture firm investing across East Africa and South Asia supporting over 50 companies through growth, turnaround, and exit.

Matthew Gjertsen

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Matt Gjertsen is the founder of BUILT, a leadership development company that focuses on turning great engineers into great managers. Prior to starting his own company, Matt spent five years as the head of Training & Development at SpaceX, and 10 years training future military leaders as an Instructor Pilot in the U.S. Air Force. He and his team are on a mission to help train better managers that build better companies, to create a better world.