Senior Site Reliability Engineer
Alpen Labs
NAMER · Full Time · 12 May, 2026
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All funds
crypto
crypto
john-pfeffer
$81Tdisclosed portfolio round capital
10 Apr, 2024last investment
2portfolio companies
0team members
Analyst signals
Portfolio activity and matriculation
Metrics use all recorded activity through 22 Jul 2026 across seed, series b. Later-round outcomes are capped at the period end.
100%companies with a later round · 2/2
0.80×median round-size step-up · n=1
Not availablemedian valuation step-up · n=0
0%recorded-solo rate · 0 solo / 2 syndicated
Blockchain Platforms · 1 companiesFinance · 1 companies
These are activity signals, not fund-return metrics. Round capital is the full disclosed financing amount, not this fund's check size. “Recorded solo” means only one investor is present in the source data and is a lead signal, not verified lead status; syndicated rounds are a co-investor or follower signal. IRR, TVPI, DPI, ownership, exits, and market beta cannot be calculated from the available records.
Opportunities
Crypto jobs across john-pfeffer's portfolio
9 current roles at companies backed by john-pfeffer, sourced from JobStash's crypto job board.
Head of Ecosystem Marketing
Alpen Labs
Remote · Full Time · 1 May, 2026
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General Application
Alpen Labs
New York City (Preferred), Remote · Full Time · 6 Apr, 2026
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Engineering Team Lead
Alpen Labs
Remote · Full Time · 6 Apr, 2026
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Executive Assistant - Nepal
Alpen Labs
Kathmandu · Full Time · 9 Jul, 2025
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Executive Assistant - Nepal
Alpen Labs
Kathmandu · Full Time · 9 Jul, 2025
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Executive Assistant - Nepal
Alpen Labs
Kathmandu · Full Time · 3 Jul, 2025
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Infrastructure Lead
Alpen Labs
Remote · Full Time · 30 May, 2025
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Infrastructure Lead
Alpen Labs
Remote · Full Time · 30 May, 2025
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People
Team
No team details are available yet.
Portfolio
Investments
Full financing histories for portfolio companies. Highlighted rounds are those where john-pfeffer is recorded as an investor.
Alpen Labs
Blockchain Platforms
Alpen Labs develops Alpen, an EVM-compatible Bitcoin validity rollup and testnet for building Bitcoin-native financial applications. The platform enables developers to deploy smart contracts and build applications involving BTC lending, payments, vaults, and other programmable financial use cases.
Ledn
Finance
Ledn provides Bitcoin-backed loans and cryptocurrency savings accounts allowing users to access liquidity without selling digital assets.