NASDAQ: COIN · PUBLIC · Coinbase

Senior Software Engineer- Blockchain Network

Internal APIs that turn a chain's state machine into something the rest of Coinbase can list, stake, and custody without each team running its own node religion.

You are deciding whether to join a profitable-on-average, loss-making-this-quarter public company, on a named internal platform, with liquid stock and a headcount that has already been cut once in 2026.

Blockchain Lab analysis, for a candidate deciding whether to apply. We are not the employer. Compensation on this posting: Not disclosed.

Listing age

27 days

Equity

Listed stock

FY2025 revenue

$7.18 billion

Where

Remote - USA

Status: Open on the employer board — checked 2026-10-06
Board updated: 2026-09-09 · 27 days before this check
Location: Remote - USA
Remote eligibility: Remote - USA
Employment: Full time, as described on Coinbase's careers pages generally; confirm on the posting
Compensation: Not disclosed
Experience, as stored: Employer stated: 5+ years of software engineering and ownership of production services.
Original post date: Not disclosed

Apply on the employer site The company Practice project

This seat

Blockchain Lab analysis

Blockchain Networks: protocol integrations behind assets and staking, as the employer describes the team.

It does not own the consumer candle chart, Base's roadmap as a public chain, or a new token. Remote - USA is the constraint.

This is platform work inside a public company that just printed a loss in the June 2026 quarter after a profitable 2025. The platform does not get to be late because trading was soft. Assets still have to credit.

The interesting engineering is the boring kind: reorgs, reward accounting, a chain upgrade at a height, an API another team already depends on. Senior means you have broken one of those and fixed it.

Updated 9 September 2026. Six of these Coinbase reqs are open at once. They are different teams. Do not apply to all of them with the same letter.

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: 2012, by Brian Armstrong and Fred Ehrsam.
Base: Remote-first. The corporate address used on filings is One Madison Avenue, Suite 2400, New York. Reincorporated from Delaware to Texas, stockholder consent 4 November 2025.
Status: Public since the 14 April 2021 direct listing. About 4,951 full-time employees as of the 31 December 2025 figure carried on Yahoo Finance.
People: Brian Armstrong, co-founder, chairman and CEO. Emilie Choi, president and COO. Alesia Haas, CFO. Fred Ehrsam remains a director. He co-founded Paradigm and is not the operator.

Coinbase is the cleanest company on this desk to underwrite, and it is still a cyclical. Fiscal 2025 did $7.18 billion of revenue and roughly $1.26 billion of net income. The quarter ended June 2026 did $1.22 billion and lost about $359 million. If your offer assumes last year's bonus, read this year's quarter. Trading is no longer 90 percent of the story, which is why these roles exist: networks, nodes, wallets, wrapped assets such as cbBTC, and fiat payments rails are internal platforms with their own on-call, not features of the candle chart.

The corporate form changed. Stockholders acted by written consent on 4 November 2025 to reincorporate from Delaware to Texas. The company describes itself as remote-first and, in some 2026 descriptions, as having no headquarters. That is not the same as 'anyone, anywhere'. Every role stored here says Remote - USA except Product Security, which says Remote - Canada. Those words are the eligibility constraint. A London candidate should not apply to them and hope.

Secondary coverage in 2026 described a workforce reduction of about 14 percent, on the order of 700 people, in May 2026. We did not re-derive that from a filing in this pass. Ask the recruiter whether the team you would join was touched, and what the current on-call load is. Public-company equity is the compensation fact the postings refuse to quantify: bands were not disclosed. None of the six roles states a salary. Do not invent one from levels.fyi in your head and then negotiate against a rumour.

Founders

Brian Armstrong

Co-founder, chairman, CEO

Born 1983. Has run Coinbase since founding. FY2025 reported pay was about $9.71 million, with a much larger exercised-equity figure beside it. The company still concentrates voting power in Class B stock. You are joining his instrument.

Fred Ehrsam

Co-founder and director

Born 1989. Left day-to-day work years ago and built Paradigm. He still files as a director and still sells stock on preset plans. Do not expect him in your design review. Do expect his votes to matter.

What the company sells

Trading

Still the cycle. The share of net revenue from trading has fallen from the 2021 extreme, but a quiet quarter still shows up as a loss.

Subscription and services

Custody, staking, USDC economics, Coinbase One, and prime. This is the line management wants you to believe is the company.

Base and platform engineering

The layer-2 launched in 2023, plus internal blockchain platform teams: networks, nodes, wallets, wrapped assets, payments. The roles on this desk sit here, not on the consumer growth squad.

Capital

FY2025 revenue

$7.18 billion

About +9% on FY2024. Standardised from filings.

FY2025 net income

About $1.26 billion

A real profit year. Not a promise about 2026.

Q2 2026

$1.22 billion revenue, about −$359 million net

Quarter ended June 2026. The cycle is not over.

Market cap

Near $50 billion

About $189 a share on 6 Oct 2026. 52-week range has been wide.

2012–2021
Venture, then a direct listing
About $86 billion at the 14 April 2021 debut
No new shares were sold in the listing. The reference print and the first trade were not the same number; debut valuations reported in the press clustered from the high tens of billions to around $100 billion depending on the print. Equity raised before the listing is a separate, smaller figure. The company later issued convertible debt, including a May 2021 offering.
2023–2025
Operating era, not a round
Public equity
Base launched in 2023. Coverage in 2025 described the SEC case as dropped, an S&P 500 inclusion, a MiCA permission, and the Deribit acquisition. Confirm each in the filing that matters to your team. They are not one event.

What should change your mind

Cycle. A down quarter cuts the narrative, the bonus, and sometimes the team.
Regulation remains a business line. A dropped case is not a statute.
Remote-USA and Remote-Canada are different jobs. Geography is not a preference on these postings.
Platform scope. 'Blockchain platform' is several teams. The posting title is the team. Read it.

Ask them

Which ledger does this team own, and what is the on-call rotation?
Was this team part of the 2026 reduction, and is the req a backfill?
What is the cash band and the refresh, in writing, before you spend a loop on it?
For Canada: which employing entity, and are you expected to overlap U.S. hours?

Sources

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

How the first months would actually go

Illustrative preparation

Not the employer’s onboarding plan.

Days 1–30: one chain's upgrade runbook, read and annotated.
Days 31–60: a small API change with a consumer inside the company, and a rollback.
Days 61–90: an incident review you led, even if the incident was minor. Senior is a behaviour.

A week you can rehearse

Pick a chain Coinbase already supports and write how you would detect a bad tip.
Separate 'node is up' from 'credit is correct'.
Ask which languages and which on-call the team actually uses. The posting is not the pager.

What to take into the room

Illustrative preparation

How do you design an integration so a reorg cannot double-credit?
Tell a staking or rewards bug with the accounting, not the vibe.
Why this team and not Nodes, in one paragraph that mentions a system?

Proof you can build before you apply

The indexer lab. Reconciliation is the overlap between this seat and every other backend seat on the desk.

Open Event indexer with reconciliation. Ingest events, retry safely, drop duplicates, and reconcile against a second source.

Walk away if

The loop is six weeks of puzzles and no one on the team attends.
On-call is follow-the-sun and your region is the night shift they did not mention.
They will not put a band in writing after the onsite.

What the employer actually wrote

Employer stated. Coinbase's Blockchain Networks team turns protocol state machines into internal APIs for assets, stablecoins, and staking.

Own the design and delivery of blockchain network infrastructure that abstracts blockchain complexity into reliable, platform APIs
Lead multi-quarter initiatives including new chain integrations, re-architecture efforts, and data migrations that improve system latency, reliability, and cost
Define and maintain APIs, SLOs, and observability for the systems you build, including on-call ownership
Partner with product and platform teams to establish data contracts and ship SDKs and platform primitives that drive adoption across Coinbase
Build deep technical context across multiple top blockchain protocols (e.g., Bitcoin, Ethereum) and apply that knowledge to simplify cross-chain operations

Source: the employer’s public Greenhouse record, job 8094196. Open the original. First seen by this desk 2026-10-06. Nothing above the fold is a substitute for that page.

A reading of the work

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

Draw the retry. Say what is idempotent and what is not.
Show how a reorg or a duplicate event is reconciled, not just ingested.
Put the SLO next to the API, not in a slide.

Still not disclosed

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.

Not a recommendation to apply. Not an employer assessment. Figures from public reporting move, and a database is not a filing. How this desk labels evidence. Report a listing.

Coinbase · Remote - USA · pay not disclosed

Apply