Episode 53

full
Published on:

7th Oct 2026

What makes a great early hire at a hard tech startup?

What makes someone a great hire at an early-stage hard tech startup?

When you're building your first team, it's easy to look for the best engineer, the deepest technical expert, or the person with the strongest pedigree. But the person who's perfect for a 100-person company may not be the person you need when you're building your first 10.

In this episode of VHTB, Matt Gjertsen (Built), Justus Kilian (Space Capital), and Brian Mejeur (AdAstra Talent Advisors) get into what makes early-stage hires different and why the definition of great talent has to change as a company grows.

How much should founders value specialization versus adaptability? We talk about why early hires need to work across a broad set of problems, how a single person can raise the bar for everyone who comes after them, and why some of your first employees should be talent magnets who make other exceptional people want to join.

We also get into why assembling a team of individual superstars doesn't always produce the strongest team. Existing trust, communication, and experience working together can help early teams move faster, especially when the company inevitably has to change direction.

And underneath all of this is one of the most important qualities an early-stage hire can have: the ability to learn quickly. When you're operating in white space, today's problem may not be tomorrow's problem, which means the people you hire need to be able to adapt just as quickly as the company does.

Episode Highlights

[00:00] What makes a great early-stage hire different from a great employee?

[02:45] Why your earliest hires need to have an outsized impact

[05:00] Why early-stage startups need breadth, not just specialization

[07:00] How founders should think about their first 10 hires

[09:00] How existing trust and team chemistry can help startups move faster

[10:30] Why superstar teams can create more friction

[11:00] Why adaptability matters when an early-stage startup has to pivot

[12:00] The most important ability Justus looks for in early-stage hires

[13:00] Why experience gives early employees a useful mental model

[15:00] What the interview process can reveal beyond technical ability

[17:00] Why early-stage hiring is more about momentum than pedigree

Episode Takeaways

  • Early-stage hires have an outsized influence because each person represents a much larger percentage of the company.
  • Your first employees aren't just filling roles. They're establishing the standard for skill, execution, culture, and the people who join after them.
  • A strong early hire can be a talent magnet who attracts other exceptional people through their network, reputation, and credibility.
  • Early-stage companies often need people with broad, adaptable skill sets because roles and priorities can change quickly.
  • Success for an early hire can mean building a function and eventually handing it to someone more specialized as the company grows.
  • A collection of individual superstars doesn't automatically create a high-performing team. Existing trust and shared working experience can help teams reach productive velocity faster.
  • Early-stage startups are more likely to pivot, making adaptability especially important when there aren't enough people to reorganize around every new problem.
  • The rate of learning can be more valuable than mastery of one narrow domain when employees are constantly working in unfamiliar territory.
  • Experience gives early hires mental models for communication, escalation, decision-making, and solving problems without established processes.
  • As a company matures, hiring criteria can shift toward deeper specialization because the organization has more people, structure, and clarity around the problems it needs to solve.

Subscribe to VHTB for more conversations on the talent, culture, and capital shaping the hard tech startup ecosystem.

Links & Resources

Show artwork for A VC, a Headhunter, and a Trainer Walk into a Bar

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

Profile picture for Brian Mejeur
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

Profile picture for Seyka Mejeur
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

Profile picture for Justus Kilian
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

Profile picture for Matthew Gjertsen
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.