Founder's Associate, Strategy Team

Posted 2 Hours Ago
Be an Early Applicant
Hiring Remotely in Miami, FL, USA
In-Office or Remote
200K-200K Annually
Mid level
Fintech • Financial Services
The Role
Works directly with the CEO on high-priority strategic projects, market research, competitive analysis, financial modeling, and cross-functional execution. The associate identifies ambiguous problems, develops solutions, builds decision-making analyses, and adapts across departments as priorities change. As the team grows, this role will help recruit, onboard, and manage additional associates.
Summary Generated by Built In
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 They’re stuck with outdated banks and fragmented tools.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.

About the Role

    This is a new program and the chance to be part of the founding team of the Office of the CEO. We’re creating a small team of high-caliber operators working directly for our Founder & CEO on whatever the company’s highest-priorities are. It is not a rotational program or a fixed analyst lane — scope is set by what the company needs solved, not by a job description. You will be the one to help identify what these opportunities are.

What You'll Do

    • 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

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

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.

Skills Required

  • 3-5 years of experience in top-tier investment banking, private equity, management consulting, late-stage venture capital, or a fast-growing startup
  • Track record of outperformance and receiving increased responsibility faster than peers
  • Strong quantitative and analytical skills
  • Advanced Excel skills
  • Working knowledge of SQL
  • Ability to dissect messy data and build financial models from scratch
  • Rigor and ability to operate effectively in ambiguity and at speed
  • Ability to sustain a high-intensity work pace of approximately 12-hour days, 5-6 days per week
  • Ability to work in Miami or New York City and travel as needed
  • Background in mathematics, physics, or another highly quantitative field
  • Understanding of fintech, banking, or financial infrastructure
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Austin, TX
66 Employees
Year Founded: 2020

What We Do

End-to-end finance platform for businesses

Similar Jobs

PNC Bank Logo PNC Bank

System Reliability & Support Lead

Machine Learning • Payments • Security • Software • Financial Services
Remote or Hybrid
USA
55000 Employees

Rapid7 Logo Rapid7

Manager, Product Management

Artificial Intelligence • Cloud • Information Technology • Sales • Security • Software • Cybersecurity
Remote or Hybrid
United States
2400 Employees
145K-196K Annually

Wipfli Logo Wipfli

Healthcare Revenue Cycle Billing Specialist II (SNF)

Cloud • Fintech • Software • Business Intelligence • Consulting • Financial Services
Remote or Hybrid
United States
2900 Employees
23-30 Hourly

PNC Bank Logo PNC Bank

Product Manager

Machine Learning • Payments • Security • Software • Financial Services
Remote or Hybrid
USA
55000 Employees
100K-223K Annually

Similar Companies Hiring

Hanover Park Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
42 Employees
Kepler  Thumbnail
Artificial Intelligence • Fintech • Software
New York, New York
9 Employees
Onshore Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
60 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account