Liquidity Operations

Ostium is on a simple mission: make it possible for anyone with a digital wallet to trade stocks, commodities, currencies, and crypto with full transparency. No brokers, no freezes, no hidden spreads. We’re replacing the opaque, offshore brokerage model with a transparent, permissionless trading stack built onchain. Every trade, deposit, and withdrawal is verifiable through open, auditable code. We’ve raised $27.9M+ from General Catalyst, Jump, Local Globe, Susquehanna (SIG), GSR, Alliance DAO, Soma Capital, Balaji Srinivasan, Meltem Demirors, and others.

Ostium is building the neo prime broker, a single venue where traders access crypto, FX, commodities, and equities through perpetuals with deep liquidity and tight pricing. Every trade we quote depends on market data feeds, hedging counter parties, and prime broker relationships working in the background, and someone has to own that stack.

As Liquidity Operations, you'll own our prime broker and liquidity provider relationships end to end, own the quality of the market data feeding into the platform, and support the Hedging & Pricing team on the operational work that keeps risk clean. When something breaks in that stack, whether it's a stale feed, a prime broker dispute, or a settlement mismatch, you'll own the resolution.

This is a role for someone equally comfortable on a call with a prime broker negotiating terms and on Slack with an engineer debugging a price feed. You should be someone who reads SQL, writes scripts when needed, and can prototype an integration before handing it off. You'll report to the COO and work closely with the CTO, Trading, and Engineering teams.

This is an in-office role based in New York City.

• Prime Broker Relationships: Own our prime broker and liquidity provider relationships end to end, including onboarding, commercial negotiations, ongoing performance monitoring, and escalations across crypto, FX, and commodities counter parties. You'll be the primary point of contact when renegotiating terms and when Engineering needs help resolving counter party issues.

• Market Data Operations: Partner with Engineering to evaluate, integrate, and monitor market data feeds. Own data quality, coverage, and reliability across venues. When a feed fails or an oracle drifts, you'll drive the operational resolution.

• Hedging & Pricing Support: Work directly with the Hedging & Pricing team on position reconciliation, margin and collateral workflows, settlement processes, and other operational work that keeps risk management running smoothly. Ostium's pricing is only as strong as the infrastructure supporting it, and you'll own that infrastructure.

• Venue & Counter party Coverage: Manage relationships across crypto exchanges, FX ECNs, and commodity liquidity providers. Understand pricing, exposure, and commercial opportunities while continuously improving our terms.

• Execution & Liquidity Reporting: Build and maintain the internal source of truth for how our external infrastructure is performing. Track execution quality, prime broker performance, market data reliability, and liquidity costs, then surface actionable insights.

• Engineering Operations Bridge: Serve as the bridge between commercial, trading, and technical teams. Translate business requirements into operational solutions and ensure alignment across counter parties, Engineering, and Trading.

• Domain Fluency: 3 to 6 years of experience at a prime broker, hedge fund middle or back office, market maker, trading operations team, or a markets-focused consulting or investment banking firm. You understand market microstructure across at least one of crypto, FX, commodities, or listed derivatives, and can quickly learn the others.

• Technical Competence: Strong SQL skills, with the ability to write Python scripts or other automation when needed. You understand APIs, common failure modes, and can prototype integrations, analyze data independently, and communicate effectively with engineers about pipelines, latency, and feed schemas. You won't be writing production code, but you should be able to build a working prototype before handing it off.

• Counterpart…