Account Manager

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.

Since launching publicly in September 2023
, Flex has scaled from zero to nine-figure annualized revenue
, with a clear path to profitability by late 2025
. 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 They’re stuck with outdated banks and fragmented tools.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.

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.

As an Account Manager at Flex, you’ll take full ownership of a portfolio of high-growth customers, driving adoption, retention, and expansion across our suite of financial products. You’ll play a key role in helping businesses scale efficiently by building strong relationships, identifying growth opportunities, and ensuring every customer gets maximum value from Flex.

You.’ll also serve as the voice of the customer, turning feedback and insights into actionable recommendations that shape future products and features. Your input will directly influence how Flex evolves to better serve the needs of our customers and the broader market.

• Own customer relationships: Serve as the main point of contact for a portfolio of clients, ensuring onboarding, satisfaction, engagement, and long-term retention.
• Drive revenue growth: Identify opportunities to expand customer value, deepening product adoption, and aligning new Flex solutions to their specific business needs and pain points.
• Proactively manage accounts: Analyze customer health, usage, and spend patterns to anticipate needs and mitigate churn risk.
• Influence product direction: Gather and synthesize customer feedback to help shape future features, workflows, and user experiences.
• Build scalable processes: Help design, refine, and document customer success playbooks for an evolving, fast-moving startup environment.
• Collaborate cross-functionally: Partner with Sales, Product, Risk, and Operations to deliver a seamless experience and measurable business outcomes.

• 2–5 years of experience in Customer Success, Account Management, within Fin Tech, SaaS, or financial services.
• Proven ability to manage a book of business, drive renewals, and expand account value.
• Excellent communication skills, able to distill complex financial or technical topics into clear, actionable insights.
• Entrepreneurial mindset with comfort operating in ambiguity and a fast-changing environment.
• Strong analytical instincts and a passion for helping customers succeed.
• Proven track record of hitting and exceeding quotas. Consistently a top 10% performer.

$80,000 - $100,000 a year

This position is also eligible for a commission-based incentive plan. The estimated on-target earnings (OTE) for this role, including base and variable compensation, is $,000.

Flex is growing quickly — you’ll help shape the direction of a product and company with real momentum.

We’re well-capitalized with strong backing and a clear long-term vision.

You’ll work with a sharp, driven team that values autonomy, clarity, and quality.

Join ambitious builders who care deeply about winning together — and having fun while doing it.

Annual team on‑sites. From Bogota to Mexico City, the entire Flex team gets together once a year to align and build camaraderie.