Senior Manager of Account Management (New Verticals)

New York, NY; San Francisco, CA
Full-time
Posted Nov 12, 2026

Skills

Account Management
Financial Modeling

Job description

Flex is a growth-stage, NYC headquartered FinTech company that is building the payment layer for life's financial obligations, giving households one place to see, split, and pay their bills around how they live and get paid. By offering greater choice over how and when payments are made and allowing eligible on time payments to help build a positive credit history, Flex puts households back in control of their cash flow.

That work brings together people with different perspectives who challenge the status quo and take ownership of solving difficult problems. For you, that means doing the best work of your career next to people who make you better, and together bringing ideas to life that make a real impact for the people we serve.

About the Role

Flex is seeking an ambitious, results-driven Senior Manager of Account Management to launch, manage, and retain and grow high-impact enterprise partnerships. This role is ideal for a driven strategic operator with a proven record of delivering measurable results through partnership growth. You'll play a critical role in developing and executing partnership strategies that directly impact Flex’s bottom line. This position offers a hybrid work environment with the flexibility to work remotely.

What you’ll do

Partnership Development & Launch

•Partner with cross-functional teams to lead to launch of new strategic partnerships aligned with Flex’s growth objectives

•Lead the creation of joint business plans, financial modeling, and growth initiatives

•Define, implement and run winning operating rhythm to maximize value 

•Collaborate cross-functionally with Sales, Marketing, Product, Engineering, Support and Legal teams at Flex and partner organizations to maximize execution and impact

Partner Growth & Operations:

•Manage and expand relationships with Flex’s largest strategic partners, fostering trust and long-term collaboration across the organization

•Build and deliver on your partnership business plan; drive progress on key partner initiatives, resolving issues and aligning stakeholders to deliver measurable wins

•Own day-to-day partner operations, ensuring smooth execution and communications

•Drive monthly and quarterly partnership business reviews

•Track, analyze, and report on partnership performance metrics, identifying areas for improvement and ensuring accountability

•Design and oversee partnership GTM efforts working closely with product, sales and marketing teams 

Strategy 

•Develop and implement processes and frameworks to manage partnerships efficiently.

•Align partnership initiatives with Flex’s broader strategic objectives.

•Provide insights and strategic recommendations to continuously enhance partnership value. 

Key Qualifications:

•6-8+ years of relevant experience in FinTech/SaaS business development, strategic partnerships, enterprise sales, investment banking, or top-tier strategy consulting roles

•Demonstrated success launching and scaling strategic partnerships or managing high-value strategic client relationships.

•Exceptional skills in relationship-building, cross-functional collaboration, stakeholder alignment, and execution.

•Strong analytical capabilities, with experience leveraging data-driven insights to inform strategic decisions.

•Excellent communication, negotiation, and presentation abilities, capable of influencing at senior levels.

•Highly organized, detail-oriented, and capable of managing multiple high-stakes projects simultaneously.

•Comfortable thriving in fast-paced, dynamic environments with a proactive and flexible approach.

•Experience leveraging AI tools to improve account planning, customer communications, and portfolio management at scale

•Self-driven with an ownership mindset, committed to delivering measurable impact.

•Bachelor’s degree required.

Compensation

Flex takes a market-based approach to pay, ensuring compensation is commensurate with a candidate's experience and our internal leveling guidelines. For candidates located in our Tier 1 (NYC/Bay Area) and Tier 3 (Salt Lake City) markets, the base salary pay range for this role is below. Flex utilizes a geographic pay differential based on a cost of labor index. If you are located outside of the cities listed below, your starting pay will be adjusted to align with the market conditions of your specific geographic zone. Please speak with your recruiter for additional information regarding the specific range for your location.

Tier 1 (NYC/Bay Area)

$200,000 — $255,000 USD

Tier 3 (Salt Lake City)

$170,000 — $215,000 USD

Life at Flex

Building a successful company takes a diverse team of intelligent, curious, determined, empathetic, and self-aware people. Our headquarters is in New York City, with employees across the US, Australia, Canada, and South America. We’re growing quickly and deliberately, with a focus on building an inclusive culture. We value the perspectives our people bring and take 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

View our benefits and more at getflex.com/careers .