Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s hard to believe that it’s 2026 and paying rent on time is expensive, inflexible, and difficult. We’re here to change that! Flex enables our users to pay rent throughout the month on a schedule that better fits their finances and budget. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense. After deliberately keeping a stealth profile as we built up unprecedented investor support and an enthusiastic user base, we are looking for motivated individuals to help us keep our mission growing. Will you be a part of the team?
About the role
As the Senior Manager, Account Management, you will be responsible for leading a team of Account Managers and directly owning a portfolio of Flex’s most strategic partners. This role sits at the intersection of partner success and revenue growth, with a clear mandate to drive retention, expansion, and long-term value across existing accounts.
Reporting to the Vice President of Account Management, you will play a critical role in translating account strategy into execution. You will ensure partners are deeply engaged with Flex’s products, expanding their portfolios over time, and realizing increasing business value through adoption, integrations, and new growth initiatives. The ideal candidate is a hands-on leader with strong commercial instincts, operational rigor, and a passion for building durable partner relationships in high-growth B2B or B2B2C environments.
What you’ll do
Account Ownership & Growth
- Own and grow a portfolio of mid-market and enterprise accounts, with responsibility for renewals, upsells, cross-sells, and expansion revenue.
- Develop and execute account plans that identify growth opportunities across new products, expanded portfolios, and deeper integrations.
- Partner closely with Sales to ensure seamless handoffs, aligned account strategies, and consistent partner experiences
Partner Relationship Management
- Build and maintain strong, senior-level relationships within partner organizations, serving as a trusted advisor and primary point of contact post-sale.
- Proactively identify partner needs, risks, and opportunities, ensuring timely escalation and resolution when necessary.
- Drive executive business reviews and strategic planning conversations with key partners.
Team Leadership & Development
- Lead, coach, and develop a team of Account Managers, setting clear expectations around performance, accountability, and partner outcomes.
- Support hiring, onboarding, and ramping of new team members as the Account Management organization scales.
- Foster a collaborative, high-performance, and inclusive team culture.
Operational Excellence & Metrics
- Track and manage key performance indicators related to retention, expansion pipeline, adoption, utilization, and partner health.
- Maintain accurate forecasting and CRM hygiene to support revenue predictability and leadership reporting.
- Use data and insights to inform account strategies, prioritize efforts, and continuously improve team performance.
Cross-Functional Collaboration
- Work closely with Product, Growth, Marketing, RevOps, and Partner Success teams to support product launches, co-marketing initiatives, and expansion programs.
- Surface partner feedback and insights to internal stakeholders to help shape roadmap priorities and go-to-market strategy.
Key qualifications
- 8–12+ years of experience in Account Management, Partner Success, Business Development, or related roles, with at least 3+ years in people management.
- Proven track record of driving retention and expansion within existing customer or partner portfolios.
- Experience managing complex, multi-stakeholder relationships in B2B, B2B2C, FinTech, PropTech, or SaaS environments.
- Strong commercial acumen with the ability to identify and close growth opportunities post-sale.
- Demonstrated ability to lead, coach, and develop high-performing teams.
- Strong operational discipline, including experience with CRM tools (e.g., Salesforce), forecasting, and KPI management.
- Excellent communication, presentation, and stakeholder management skills.
- Comfortable operating in a fast-paced, high-growth, and highly cross-functional environment.
The compensation range for this role will be commensurate with the candidate's experience and Flex's internal leveling guidelines and benchmarks. This is a commission earning role. The OTE (On Target Earnings) listed below:
We understand that it takes a diverse team of highly intelligent, curious, determined, empathetic, and self aware people to grow a successful company. Our HQ is located in New York City, but we have employees located throughout the US, Australia, Canada and South America. We are growing quickly, but deliberately, with a focus on building an inclusive culture. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity workplace.
Offices
Roles posted in New York, San Francisco, and Salt Lake City are hybrid positions with on-site expectations of 2-3 days per week in our local offices. For candidates outside of these areas, you may be eligible for our relocation assistance program.
Benefits
For full-time U.S. employees we offer:
- Competitive medical, dental, and vision
- Company equity
- 401(k) plan with company match
- Unlimited paid time off + 13 company paid holidays
- Parental leave
- Free Flex subscription
For full-time non-U.S. employees, we offer:
- Competitive compensation + company equity
- Unlimited PTO
Skills Required
- 8-12+ years of experience in Account Management, Partner Success, Business Development, or related roles
- At least 3+ years of people management experience
- Proven track record driving retention and expansion within existing customer or partner portfolios
- Experience managing complex, multi-stakeholder relationships in B2B, B2B2C, FinTech, PropTech, or SaaS environments
- Strong commercial acumen and ability to identify and close post-sale growth opportunities
- Demonstrated ability to lead, coach, and develop high-performing teams
- Strong operational discipline, including CRM tools such as Salesforce, forecasting, and KPI management
- Excellent communication, presentation, and stakeholder management skills
- Comfort operating in a fast-paced, high-growth, highly cross-functional environment
Flex Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Flex and has not been reviewed or approved by Flex.
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Fair & Transparent Compensation — Pay is considered solid for a growth‑stage fintech, particularly in technical roles, and a public pay‑equality pledge signals intent to manage internal equity. Feedback suggests compensation is viewed as competitive relative to the company’s size and stage.
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Healthcare Strength — Health coverage is described as starting on day one and positioned as “best in class” with medical, dental, and vision. This immediacy and breadth are highlighted across the careers materials and company channels.
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Leave & Time Off Breadth — Time away programs include unlimited PTO, company holidays, and paid parental leave. Feedback suggests these policies contribute to a modern benefits stack alongside hybrid flexibility.
Flex Insights
What We Do
Flex, an NYC-headquartered FinTech company, has created a trusted rent payment experience. It’s hard to believe that it’s 2024 and paying rent on time is expensive, inflexible, and difficult; we’re here to change that! We enable our users to pay rent throughout the month on a schedule that better fits their finances and budget, while also helping them build credit. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense.
Why Work With Us
We believe it takes a diverse team of curious, determined, empathetic, and self aware people to grow a successful company. We value the unique and dynamic perspectives our team brings to solve critical problems that impact the lives of our users and the financial decisions they make.
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