Founder's Associate, Strategy Team

Flex•Miami, FL

3d•Hybrid

About The Position

Flex is building the AI-native private bank for business owners, re-architecting the entire financial system for entrepreneurs. 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. The company moves fast, ships relentlessly, and operates with extreme ownership. Their customers are affluent business owners ($3–$200M in revenue) who are underserved by outdated banks and fragmented tools. Flex has raised $100M+ in equity and $300M+ in debt. The company values building mission-critical software that directly controls how money moves at scale, fostering a high-bar, low-ego environment with exceptional people and real ownership. They prioritize execution, quality, clarity, and results, aiming to build something that will define how a generation of owners runs their businesses. Roles are available in San Francisco, Miami, New York, and fully remote.

Requirements

3–5 years in top-tier investment banking (TMT/fintech coverage), private equity, management consulting, late-stage venture capital, or a fast-growing startup
A track record of outperformance — clear signals you were trusted with more scope, faster, than your peers
Strong quantitative and analytical skills: advanced Excel, working knowledge of SQL, and comfort dissecting messy data and building models from scratch
Extreme rigor and comfort operating in ambiguity at speed — priorities here change faster than the plan does
Demonstrated ability to sustain a high-intensity pace: this role will regularly require ~12-hour days, 5–6 days a week, especially in year one
This role is based in Miami or NYC but will involve travel

Nice To Haves

Ideal background in math, physics, or another highly quantitative field
Understanding of fintech, banking, or financial infrastructure

Responsibilities

Take on the CEO’s highest-priority problems directly — strategic projects, market research and competitive work, financial analysis, and cross-functional execution, often with no existing playbook
Identify problems, develop solutions, and execute them; often working on multiple initiatives
Build and own the models and analyses that inform major company decisions
Collaborate with and move fluidly across various departments as business priorities shift
As the early stages of this team grows, you will help recruit, ramp, and manage the associates who join after you