Join Capital
Join Capital is a Berlin-based early-stage venture capital firm investing €1–5 million at Pre-Seed to Series A into European deep technology startups across defence, security, space and dual-use sectors, currently raising a €235 million Fund III anchored by the EIF.
- Company typePrivate
- Founded2021
- HeadquartersBerlin, Germany
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Join Capital does
Join Capital is a Berlin-based early-stage venture capital firm that invests in European deep-technology startups with applications across defence, security, space and dual-use industries. The firm operates three pooled investment vehicles — Fund I (consumer internet/technology in the EU and Switzerland), Fund II (B2B, Industry 4.0, PropTech and Enterprise SaaS across Germany, Italy, the wider EU/UK and opportunistically the US) and Fund III (Join Capital Global Strategic Technologies Fund III), the current active vehicle targeting €235 million for early-stage deeptech in NATO Allied and Partner countries. Join Capital typically deploys €1–5 million at Pre-Seed to Series A, frequently leading or co-leading and taking board seats, and supports portfolio companies through a proprietary Ambassador Network of defence and industry leaders and the invite-only Asymmetric Advantage forum.
The firm's underlying IP is concentrated in its sourcing, diligence and portfolio-support platform rather than in a discrete technology product. Differentiators cited include deep sector expertise in defence and dual-use technologies, access to an Ambassador Network that provides privileged procurement and customer pathways, the Asymmetric Advantage forum as a recurring community/ecosystem asset, and a stated preference for early-stage companies with real intellectual property at TRL 4+. Portfolio companies span autonomous drone interception (Thyra), non-toxic satellite propulsion (ISPTech), confidential multi-cloud computing (Enclaive), defence-grade RF geolocation (Quadsat), Very Low Earth Orbit air-breathing propulsion satellites (Kreios Space), photonic integrated circuits (PhotonPath), fibre-sensing critical infrastructure monitoring (Optics11) and ML-generated control software for safety-critical systems (Hypercritical).
Join Capital's revenue model is standard asset management: management fees on committed/managed capital across its three funds, with future upside from carried interest on portfolio exits. The firm has no product pricing. Its go-to-market combines direct founder engagement at conferences and ecosystem events, content marketing via Medium and LinkedIn, the Asymmetric Advantage forum for LP and portfolio cultivation, and an ambassador-driven distribution channel into European defence procurement. The largest LP commitment disclosed is the €50 million anchor from the European Investment Fund into Fund III under the InvestEU Defence Equity Facility, expected to mobilise over €500 million in total European defence innovation support.
Join Capital firmographics
Firmographics- Name
- Join Capital
- Legal name
- JOIN Capital GmbH
- Website
- https://join.capital
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Join Capital is a Berlin-based early-stage venture capital firm investing €1–5 million at Pre-Seed to Series A into European deep technology startups across defence, security, space and dual-use sectors, currently raising a €235 million Fund III anchored by the EIF.
- Ownership category
- akta.pro rank
Join Capital industry classification
Industry- Product category
- Venture Capital
- NAICS
- Other Investment Pools and Funds (5259), Portfolio Management and Investment Advice (523940), All Other Financial Investment Activities (52399)
- SIC
- Investment Advice (6282)
- akta.pro primary industry
- Sector-Focused Venture Capital (Vertical Specialists) (FSANAAAD)
Keywords
Where Join Capital is headquartered
LocationHeadquarters
- HQ city
- Berlin
- HQ country
- Germany
- HQ region
- Europe
Offices3 records
Markets served
Join Capital business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Others
Revenue model
- Fund Management / Capital Returns: As a venture capital firm, Join Capital generates returns through equity investments in early-stage deep tech companies. Returns are realized through portfolio company exits via acquisitions, IPOs, or secondary transactions. The firm manages multiple funds (Fund I, Fund II, Fund III) targeting different technology sectors and investment stages.
Go-to-market motion1 record
Distribution channels2 records
Marketing channels5 records
Join Capital product offering
Product offeringCore offering
Join Capital is a Berlin-based venture capital firm that invests €1–5M per company in early-stage deep tech startups at Pre-Seed to Series A stages across defence, space, enterprise technology (quantum, AI/cybersecurity), and industrial sectors in Europe and NATO-aligned regions. The firm manages three funds (Fund I, Fund II, and Fund III targeting €235M) and typically leads or co-leads rounds while taking board seats. Beyond capital, Join Capital provides portfolio companies with strategic guidance, operational support, and privileged access to an Ambassador Network of defence, industry, and enterprise leaders, as well as the Asymmetric Advantage forum.
Product overview
Join Capital is a Berlin-based venture capital firm investing in early-stage deep tech companies across defence, space, industrial, and enterprise sectors. The firm manages multiple investment funds (Fund I, Fund II, and Fund III focusing on global strategic technologies) and does not offer a unified product/platform. Instead, it provides venture capital investment services alongside portfolio company support including access to an Ambassador Network and the Asymmetric Advantage forum. The portfolio consists of eight distinct portfolio companies spanning autonomous defence systems, satellite propulsion, confidential computing, RF geolocation, photonic integrated circuits, and AI-powered industrial software.
Differentiator
Problem solved
Functional benefit
Products and services
- Join Capital Fund I Wholly owned fund vehicle (Join Capital Fund I GmbH & Co. KG) that invests in consumer internet and technology companies in the EU and Switzerland, with at least 50% of commitments allocated to SMEs. Provides limited-partner investors with exposure to early-stage European consumer/tech equity returns.
- Join Capital Fund II Wholly owned fund vehicle (Join Capital Fund II GmbH & Co. KG) that invests at growth-oriented seed and early-stage in B2B, Industry 4.0, PropTech, and Enterprise SaaS across Germany, Italy, broader Europe (including the UK and Switzerland), and opportunistically the US. Provides limited-partner investors with exposure to early-stage European enterprise software returns.
- Join Capital Global Strategic Technologies Fund III Wholly owned fund vehicle (Join Capital Global Strategic Technologies Fund III GmbH & Co. KG) targeting €235 million to invest in approximately 25 early-stage deep tech startups across Europe in defence, security, space, and dual-use technologies for NATO Allies and NATO Partners. Anchored by a €50 million commitment from the European Investment Fund. Provides limited-partner investors with exposure to early-stage European defence and deep tech equity returns.
- Ambassador Network
Quantifiable outcome
- EIF commitment of €50 million expected to unlock over €500 million in total support for European defence innovation
- +1 more outcomes
Companies that use Join Capital
Customer profileNamed customers8 records
Segments4 records
Ideal customer profiles1 record
Join Capital technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
Join Capital partnerships and signals
Strategic signalScale indicators4 records
Recent moves5 records
Expansion highlights5 records
Join Capital competitors and assessment
Company assessmentMarket position
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Join Capital social profiles
Digital presenceJoin Capital financial estimates
Financial estimateRevenue estimate
Valuation estimate
Join Capital leadership team
Management profileNumber of profiles
Profiles5 records
Join Capital subsidiaries and ownership
Company hierarchySubsidiaries3 records
Join Capital funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Join Capital M&A and investment
M&A and investmentM&A
Investments52 records
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Join Capital
What does Join Capital do?
Join Capital is a Berlin-based venture capital firm that invests €1–5M per company in early-stage deep tech startups at Pre-Seed to Series A stages across defence, space, enterprise technology (quantum, AI/cybersecurity), and industrial sectors in Europe and NATO-aligned regions. The firm manages three funds (Fund I, Fund II, and Fund III targeting €235M) and typically leads or co-leads rounds while taking board seats. Beyond capital, Join Capital provides portfolio companies with strategic guidance, operational support, and privileged access to an Ambassador Network of defence, industry, and enterprise leaders, as well as the Asymmetric Advantage forum.
Is Join Capital a public or private company?
Join Capital is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Join Capital founded?
Join Capital was founded in 2021. It employs 1 to 10 people.
Where is Join Capital based?
Join Capital is headquartered in Berlin, Germany, in the Europe region.
How does Join Capital make money?
One revenue line is on record: fund Management / Capital Returns.
Does Join Capital have an API?
No public API is recorded for Join Capital.
What industry is Join Capital in?
Join Capital's product category is Venture Capital. Its primary akta.pro industry code is FSANAAAD, Sector-Focused Venture Capital (Vertical Specialists). Its NAICS code is 5259 and its SIC code is 6282.