Legionarius

legionarius.org

defense & space

legionarius.org

Boston, Massachusetts, United States

11-50 employees

LinkedIn Profile

About Legionarius

defense & space manufacturing

Decision Makers at Legionarius

1 contact

Alexander Gruentzig

CEO and Co-Founder

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· 1 decision maker · Emails available

Sales Outreach Angle

Legionarius. Use StackWho to identify the right decision-maker email for targeted sales outreach, recruiting, or partnership development.

Legionarius's Position in the StackWho Database

• Legionarius is 1 of 1,981 defense & space companies tracked in StackWho.
• 1,955 defense & space companies in our database have verified decision-maker emails (99% of the cohort).
• 10,409 companies in Massachusetts are in the StackWho database.
• 714 defense & space companies are in the 11-50 employee range (same size as Legionarius).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Legionarius use?

Full technology stack data for Legionarius is available on StackWho.

How do I contact the decision makers at Legionarius?

StackWho has verified email addresses for 1 decision maker at Legionarius. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Legionarius directly for sales, recruiting, or partnerships.

What industry is Legionarius in?

Legionarius operates in the defense & space industry, headquartered in Boston, Massachusetts, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.