Lead the development of FP&A function, implement modern FP&A platforms, manage budgeting and forecasting, and partner with leaders to shape financial strategies.
Flex is building the AI-native private bank for business owners.
We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and financial operations—rebuilt from the ground up as a single, intelligent system. Flex is the full financial home for ambitious owners.
Since launching publicly in September 2023, Flex has scaled from zero to nine-figure annualized revenue, with a clear path to profitability by late 2026. We move fast, ship relentlessly, and operate with extreme ownership.
Our customers are affluent business owners ($3–$200M in revenue)—the backbone of the economy and one of the most underserved segments in finance. They’re stuck with outdated banks and fragmented tools. We’re replacing all of it. The opportunity is massive: a ~$1T+ revenue market hiding in plain sight. Our ambition is to build a $100B+ company by delivering a product that is fundamentally better—not incrementally improved.
Flex has raised $100M+ in equity and $300M+ in debt.
- Mission-critical problems: We build software that directly controls how money moves at scale.
- High bar, low ego: Small teams, exceptional people, real ownership.
- Speed over comfort: We prioritize execution, quality, clarity, and results.
- Enduring impact: What we’re building will define how a generation of owners runs their businesses.
Team & Locations
We hire exceptional people who want to build hard things and see their work matter immediately. Roles are available in: San Francisco, Miami, New York, and fully remote.
Flex Fuels Ambition.
We're looking for an FP&A Manager to build our FP&A function from 0 to 100. The financial models, the planning cadence, the tech stack itself — you'll own the blueprint.
This role sits at the intersection of finance, technology, and AI. The shift in modern FP&A is decisive: from periodic reporting to continuous, real-time, AI-augmented planning. Routine work is collapsing. Decision support is expanding. We want someone who's already thinking this way.
✅ What You’ll Do
- Build the FP&A function from 0 to 100 — design the planning cadence, reporting architecture, and operating rhythm from scratch
- Implement a modern FP&A platform (Pigment, Runway, or Abacum) end-to-end: vendor selection, data model design, integrations, and rollout
- Own annual budgeting, rolling forecasts, and long-range planning — built as a continuous, driver-based forecasting capability
- Build and maintain the financial models that drive real executive decisions on pricing, headcount, capital allocation, and GTM investment
- Run board-level reporting and investor materials — translating financial complexity into clear executive narratives
- Design the FP&A data layer: pull directly from the warehouse with SQL, build dashboards, and automate the reporting pipeline so the numbers are always live
- Own scenario planning as a continuous capability — run one-click shocks across pricing, demand, FX, and headcount with side-by-side P&L, balance sheet, and cash impact
- Embed AI agents across the workflow — automated variance detection with drafted commentary, anomaly monitoring on key metrics, narrative generation for monthly reviews and board packs, and natural-language Q&A on financial data
- Partner with GTM, Product, and Engineering leaders on the unit economics, capacity planning, and trade-offs that shape the roadmap
⚡️What Makes You a Great Fit
- 5+ years of FP&A experience, ideally at a high-growth fintech company
- Proven 0-to-100 builder — you've stood up an FP&A function or substantially rebuilt one, not just maintained one that already exists
- Hands-on implementation experience with a modern FP&A platform (Pigment, Runway, or Abacum strongly preferred
- SQL fluency is a must — you go to the warehouse before you go to the BI tool. Comfort with Looker, Hex, Mode, or similar
- AI-native operator — you've already integrated tools like Claude into your daily workflow, you've used AI to draft variance commentary, automate forecast refreshes, or generate board narratives, and you have opinions on which workflows should and shouldn't be agentic yet
- Strong storytelling chops — variance numbers don't drive decisions, narratives do. You can write the commentary the CFO wants to read
- Builder energy — you'd rather design a process than inherit one, and ambiguity excites you more than it stresses you out
Why Join Us
Build something generational — Capture the full lifecycle of money for ambitious business owners.
Work on real money, real risk — Payments, credit, and banking at serious scale.
Solve hard problems — AI, underwriting, compliance, and global finance from first principles.
True ownership — Small teams, high trust, real accountability.
Founder-level exposure — Direct access to leadership, customers, and investors.
High bar, high taste — Move fast without cutting corners.
Elite peers — People here are builders, not tourists.
Real upside — Meaningful equity if you help build something big.
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