Staff Software Engineer: Perpetuals

Blockchain Lab analysis

Architecture for price, position, order, and liquidation across extension and mobile. Decimals and dead feeds are in scope because the employer put them there.

It does not own Linea, Besu, or Teku. Those are the other company in the announced split. Do not take this seat to work on the L2.

Blockchain Lab analysis

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

Founded

2014, by Joseph Lubin.

Base

The perpetuals posting says EMEA - Remote. That is a region, not a country, and not a promise of worldwide eligibility.

Status

Private. Last priced round was the March 2022 Series D at about $7 billion. A split into MetaMask and a new Consensys was announced on 9 September 2026, to complete by year end.

People

Joe Lubin, Ethereum co-founder, has been chief executive since the start. After the split he is slated to be chairman and CEO of MetaMask, and executive chairman of the new infrastructure company. Mike Kriak is named CEO of that new Consensys, David Cunningham president.

1. Jul 2019

   Series A

   $10 million

   SK Group, per Sacra's October 2025 compilation.

2. Apr 2021

   Series B

   $65 million

   JPMorgan and Mastercard reported among participants.

3. Nov 2021

   Series C

   $200 million at about $3.2 billion

   Marshall Wace and Third Point named on the round.

4. 14 Mar 2022

   Series D

   $450 million at about $7 billion

   Led by ParaFi, Anthos participating. Microsoft has been reported as a backer of the company. Total capital across these rounds is about $715 million. No later priced round was found.

• Entity risk through the end of 2026. Title, team, and product can be redrawn by a separation agreement you will not see.
• A $7 billion mark from 2022 is not a current valuation. No newer priced round was found.
• Consumer derivatives. Perpetuals inside a wallet used by non-professionals is a product risk and a regulatory risk. EMEA does not make that smaller.
• Feed and liquidation correctness. This is where the seat can lose people money. Treat the posting's mention of decimal precision as the job, not as flavour.

Ask them

• Will the offer be from the MetaMask entity or from the new Consensys?
• Is perpetuals shipping, and in which jurisdictions is it actually offered?
• Who owns the price feed, and what is the failure mode when it stalls?
• What happened to headcount and scope in the 2022 and 2024 cuts, and is this seat a backfill?
• EMEA remote: which countries, which entity, which hours?

• Decrypt on the 9 Sep 2026 split
• The Block on the split
• Sacra funding history

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

Illustrative preparation

Not the employer’s onboarding plan.

1. Days 1–30: the current architecture, including what is already in extension versus mobile. Staff means you can hold both.
2. Days 31–60: one change on the failure path, reviewed by someone who has worn the pager.
3. Days 61–90: a short note on a jurisdiction or a leverage level you would not ship. Put your name on the no.

A week you can rehearse

• Write the state machine: price, position, order, liquidation. Mark the decimal.
• Write the feed-failure behaviour before the happy path.
• Say which entity you think will employ you in January. Then ask.

Illustrative preparation

• What happens to an open position when the oracle stalls?
• How do you test a liquidation without using a mainnet user?
• Why is this a wallet feature rather than a venue? Have a product answer and an architecture answer.

Proof you can build before you apply

• The state-machine lab, with an explicit adversarial case for a stale price. That maps more cleanly to this posting than a generic client story.

Open State-machine simulator. A small state machine with an honest path and one adversarial case.

• Protocol atlas
• Canon

• They cannot tell you which legal entity pays you after the split.
• Perpetuals is a slide, and the staff seat is a mobile bug queue.
• There is no answer on regional eligibility beyond 'EMEA'.

Employer stated. MetaMask Perpetuals: architecture for price, position, order, and liquidation flows across extension and mobile, with decimal precision and feed failure in scope.

• Own the technical architecture and roadmap for MetaMask's Perpetuals experience across Extension and Mobile — from real-time price/position data flows to order execution and margin/liquidation UX.
• Set technical direction and standards for trading-critical features: precision/decimal handling, state consistency under high-frequency updates, and resilience to feed/connectivity failures.
• Drive cross-team technical alignment with other experience teams and backend/protocol integration teams to ship complex, multi-team projects.
• Identify and de-risk the hardest technical problems on the roadmap before they become blockers; make build-vs-buy and architecture trade-off calls for the domain.
• Partner with the Engineering Manager on prioritization, providing the technical judgment that shapes what gets built and in what order.

Source: the employer’s public Greenhouse record, job 8138475. Open the original. First seen by this desk 2026-10-06. Nothing above the fold is a substitute for that page.

Blockchain Lab analysis. These lines are a reading of the advertisement. They are not extra hiring requirements.

• Separate the state transition from the networking story. They fail differently.
• Name the assumption the client makes about the peer set.
• Show a test where the honest path and the adversarial path diverge.

• Compensation, unless a figure appears in the header. None of these eighteen postings stated one.
• Closing date, and the day the role was first published. The board timestamp is an update.
• Visa sponsorship, on-call, and the employing subsidiary.