Ostium

1 week ago

Financial Controller

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 6 hours agoStatus: Live

Job Summary

Direct accounting operations and implement institutional-grade financial frameworks across US GAAP and onchain activity. Own the monthly and quarterly close, consolidated reporting, and NAV/positions accounting, reconciling fee, spread, and liquidation revenue daily against blockchain data. Oversee digital asset/crypto treasury, controls and reconciliation infrastructure, audit readiness, and multi-entity tax, while managing treasury, reporting, and core corporate accounting (AP, payroll, vendor management, equity/token compensation).

Location: Anywhere

Workplace: Remote

Employment Type: Full time

Job Function: Finance & Accounting

Seniority: Manager level

Key Responsibilities

•Own monthly and quarterly consolidated close across all entities, producing US GAAP financials from fiat and onchain activity.
•Perform NAV & positions accounting, valuing collateral and reconciling P&L and fee/funding/spread/liquidation revenue with daily onchain-to-books reconciliation.
•Own digital asset accounting including crypto treasury, stablecoin flows, wallet-level reconciliation, gas, and digital asset fair value treatment.
•Build controls and reconciliation infrastructure wiring onchain data into the books for chain-speed reconciliation.
•Manage external audit readiness and first-audit process, coordinating crypto and multi-entity tax across jurisdictions and supporting entity structuring.
•Manage treasury and reporting, including cash and stablecoin balances, runway, collateral movements, and investor/board reporting.
•Own core corporate accounting including AP, payroll, vendor management, and equity/token compensation accounting.

Key Requirements

•CPA (Active) with deep US GAAP fluency and demonstrated ownership of a full audit-ready close.
•Hands-on dual-domain experience reconciling both TradFi (positions, NAV, brokerage/fund accounting) and crypto/digital asset accounting.
•Experience in a broker-dealer, prime broker, hedge fund, fund administrator, or trading firm handling positions, margin, and mark-to-market.
•Onchain fluency: read block explorers, understand wallets and smart contract interactions, and reconcile directly to onchain data.
•Fluency with a core ERP (QuickBooks) and a crypto subledger.
•High agency building or materially rebuilding a finance function in a resource-constrained environment.
•Comfort being the entire function before building a team.

Experience:CryptoDigital assetsDeFiTradingBroker-dealerHedge fundVC-backed startup

Education:Certification / Diploma

Skills:Audit readinessControlsReconciliationAttention to detailHigh agency

Certifications:CPA

Tech Stack:US GAAPQuickBooksBlock explorerSmart contractsStablecoinsDeFiBlockchain

Company Brief

Ostium

Develops a decentralized on‑chain perpetuals exchange enabling users to trade stocks, commodities, FX, and indices from self‑custodial wallets, aiming to bring traditional markets on‑chain with transparent, auditable market rules.

Industry: Trading Platforms

Company Size: Small (11 to 50 employees)

Growth: Growth Stage Startup

Valuation: USD 250M to 500M

Funding: Series A

Headquarters: New York, United States

Founded: 2022

Website LinkedIn

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Ostium

1 week ago

Financial Controller

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 6 hours agoStatus: Live

Job Summary

Location: Anywhere

Workplace: Remote

Employment Type: Full time

Job Function: Finance & Accounting

Seniority: Manager level

Key Responsibilities

•Own monthly and quarterly consolidated close across all entities, producing US GAAP financials from fiat and onchain activity.
•Perform NAV & positions accounting, valuing collateral and reconciling P&L and fee/funding/spread/liquidation revenue with daily onchain-to-books reconciliation.
•Own digital asset accounting including crypto treasury, stablecoin flows, wallet-level reconciliation, gas, and digital asset fair value treatment.
•Build controls and reconciliation infrastructure wiring onchain data into the books for chain-speed reconciliation.
•Manage external audit readiness and first-audit process, coordinating crypto and multi-entity tax across jurisdictions and supporting entity structuring.
•Manage treasury and reporting, including cash and stablecoin balances, runway, collateral movements, and investor/board reporting.
•Own core corporate accounting including AP, payroll, vendor management, and equity/token compensation accounting.

Key Requirements

•CPA (Active) with deep US GAAP fluency and demonstrated ownership of a full audit-ready close.
•Hands-on dual-domain experience reconciling both TradFi (positions, NAV, brokerage/fund accounting) and crypto/digital asset accounting.
•Experience in a broker-dealer, prime broker, hedge fund, fund administrator, or trading firm handling positions, margin, and mark-to-market.
•Onchain fluency: read block explorers, understand wallets and smart contract interactions, and reconcile directly to onchain data.
•Fluency with a core ERP (QuickBooks) and a crypto subledger.
•High agency building or materially rebuilding a finance function in a resource-constrained environment.
•Comfort being the entire function before building a team.

Experience:CryptoDigital assetsDeFiTradingBroker-dealerHedge fundVC-backed startup

Education:Certification / Diploma

Skills:Audit readinessControlsReconciliationAttention to detailHigh agency

Certifications:CPA

Tech Stack:US GAAPQuickBooksBlock explorerSmart contractsStablecoinsDeFiBlockchain

Company Brief

Ostium

Industry: Trading Platforms

Company Size: Small (11 to 50 employees)

Growth: Growth Stage Startup

Valuation: USD 250M to 500M

Funding: Series A

Headquarters: New York, United States

Founded: 2022

Website LinkedIn