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Blockchain LabBlockchain LabTHE VENTURE STUDIO

PRIVATE · ARBITRUM

Offchain Labs

Offchain Labs builds Arbitrum, Prysm, and now the ZeroDev wallet stack. ARB is the DAO's token, not the company's stock.

You are deciding whether to work on Nitro, a req created in April 2025, or on ZeroDev keys inside a company that bought ZeroDev in August 2025 for an undisclosed price.

The company you would actually join

Blockchain Lab analysis

Public reporting and the employer’s own releases. Not a relationship with Blockchain Lab. Not a credit opinion.

Founded
2018. Steven Goldfeder is the chief executive. Harry Kalodner and Ed Felten are the co-founders the company's technical history is told through.
Base
Both seats say Remote. Neither says worldwide.
Status
Private. The posting says backed by $124 million. That is the employer's sum, not a fresh round.
People
The ZeroDev acquisition closed into this company on 13 August 2025. Price not disclosed.

Offchain is the company. Arbitrum One is the chain most people mean. The DAO is a third thing, with its own token. The posting leans on the ecosystem — Robinhood, BlackRock, Ethena, Securitize, Aave, Apechain are names the employer lists as using the stack. Those are distribution claims. They are not your customer list on day one, and they are not revenue.

The two seats age differently. Nitro's Lever record was created on 17 April 2025 and was still up on 6 October 2026. Seventeen months is long enough that the team you imagine may have shipped the work or lost the headcount. ZeroDev's record was created on 7 July 2026, after the August 2025 acquisition had had a year to settle. The work there is key custody without becoming a custodian: committees, secret sharing, TEEs, passkeys. If you cannot draw who can reconstruct a key, you are not the hire, however strong your Go is.

Founders

Steven Goldfeder

Co-founder and CEO

The operating executive of the company that ships Arbitrum the software, which is not the same organisation as the Arbitrum DAO that holds the ARB token. Confusing those two is how candidates mis-price an offer.

Ed Felten and Harry Kalodner

Co-founders

Felten is the Princeton systems figure; Kalodner the long-time builder beside Goldfeder. The Nitro seat is their stack. The ZeroDev seat is a product they bought. Different grandparents, same payroll.

What the company sells

Arbitrum

The posting's claim: Arbitrum One is the most widely adopted Ethereum scaling stack, and over 100 teams have used the technology to build their own chains. Employer-stated.

Nitro

The core you would join on the older req: distributed systems, performance, security of that stack. Go, C++, or Rust, plus WebAssembly and compilers as familiarity.

ZeroDev

Smart accounts. The wallet seat builds Go services for non-custodial signing: distributed keys, TEEs, passkeys. Acquired, not founded here.

Capital

Employer-stated capital

$124 million

On the posting. Not itemised by round here.

ZeroDev price

Not disclosed

13 August 2025 release.

These seats' pay

Not disclosed

Neither posting states a band.

ARB

Not your equity

DAO token. A grant of ARB would be a token grant. Ask if one exists. Do not assume it.

  1. On the posting

    Employer's own sum

    $124 million

    The Lever text says the company is backed by $124 million. This brief does not add a newer priced round on top of that sentence. Historical Series A and Series B figures circulate in databases. They are not repeated here as if this desk re-read the closes.

  2. 13 Aug 2025

    Acquisition of ZeroDev

    Not disclosed

    Offchain's release: strategic acquisition of ZeroDev, terms not disclosed. ZeroDev's own note says the product keeps supporting many chains, not only Arbitrum. The wallet seat exists because of this deal.

What should change your mind

  • Stale Nitro req. Created April 2025. Confirm it is alive.
  • Undisclosed acquisition price. ZeroDev equity, if you had any, is already a story. New hires do not inherit it.
  • Remote without a country list.
  • Token confusion. ARB is not Offchain stock.

Ask them

  • Is the Nitro seat a 2025 req that nobody closed, and who would you report to?
  • What of ZeroDev is still the roadmap versus what was acqui-hired?
  • Which countries can the remote contract actually employ?
  • Is any compensation denominated in ARB?

Sources

If a figure is not in those sources, it is not in this brief on purpose.

Open roles on this desk

  • Senior Backend Engineer, Nitro

    Senior backend on Nitro, the software under Arbitrum. The Lever record was created on 17 April 2025 and was still open on 6 October 2026. Pay is not disclosed. ARB is not your equity.

    Remote · board 2025-04-17

  • Senior Backend Engineer, ZeroDev Wallet

    Go services for ZeroDev's non-custodial wallets: distributed keys, TEEs, passkeys. You would work for Offchain Labs, which bought ZeroDev on 13 August 2025. Price of that deal was not disclosed. Pay on this posting is not disclosed.

    Remote · board 2026-07-07