Finance Expert - Technical Accounting

Obsidian; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Obsidian in London seeks a Non-Investment Finance Expert to produce and evaluate expert-grade deliverables for frontier AI finance work, including PnL reconciliations and multi-statement models.

You’ll work from messy source files and write CFO-ready narratives; 3+ years in hands-on finance, CPA/CA/CIMA preferred, US GAAP/IFRS strong, and advanced Excel modeling required.

Qualifications

• 3+ years in hands-on non-investment finance role (e.g., product control / FP&A / treasury).
• Strong knowledge of US GAAP and IFRS with ability to interpret complex guidance.
• Advanced Excel modeling with linked 3-statement models and pro forma scenarios.

Responsibilities

• Build and review deliverables such as PnL and mark-to-market reconciliations, and pro-forma models.
• Reason from primary sources and separate material items from distractors.
• Write CFO-ready narratives explaining assumptions, variances, and recommendations.

Skills

Advanced Excel modeling

US GAAP / IFRS

Education

CPA / CA / ACA / ACCA / CIMA

Job description

Non-Investment Finance Expert — AI Training & Evaluation

We're building frontier AI for complex, real-world finance work, and we need senior finance practitioners to produce and evaluate expert-grade work products that set the bar for what "correct, professional output" looks like. You'll work through realistic, document-heavy scenarios — messy source files, distractors, ambiguous guidance — and either produce the deliverable yourself or judge AI-generated attempts against a professional standard. This is hands-on finance craft, not survey-taking.

What you'll do

• Build and review deliverables such as: PnL and mark-to-market reconciliations (trader vs. accounting, month-end marks, commissions, adjustments); vendor / AP payment reconciliations under cash constraints with controls (PO, P-card, aging); integrated 3-statement and pro-forma models including purchase-accounting impacts (ASC 805 deferred-revenue haircut, PPA amortization, synergy phasing); covenant and credit analysis; and partnership / professional-services allocations (profit-pool waterfalls, capital accounts).

• Reason from primary sources — term sheets, purchase/partnership agreements, trial balances, memos, emails — and separate what's material from deliberate distractors.

• Write clear, CFO/partner-ready narratives that explain assumptions, variances, and recommendations.

Who we're looking for

• 3+ years in a hands-on non-investment finance role: product control / financial control, corporate FP&A, technical accounting, treasury / financial operations / AP–P2P, commercial-banking credit, or professional-services / partnership finance.

• CPA / CA / ACA / ACCA / CIMA (or equivalent) strongly preferred.

• Strong US GAAP / IFRS (bonus: ASC 805 & 606) and advanced Excel modeling (linked 3-statement models, reconciliations, pro formas).

• Comfort exercising professional judgment on incomplete or ambiguous information.

• Note: a CFA / investing / portfolio-management background is not required — this is operational and technical finance, not markets.