Senior Staff Decision Scientist, Flex
Risk
$216-270k
+ company stock options
Flexible rent payment application
Posted today
Flexible rent payment application
501-1000 employees
Posted today
$216-270k
+ company stock options
501-1000 employees
Company mission
Flex's mission is to empower as many renters as possible with flexibility over their most significant recurring expense.
Role
Who you are
- 10+ years of experience in payments, risk, credit, decision science, or platform analytics
- Strong hands-on skills in Python and SQL and working with large, messy datasets
- Experience working on high-scale transactional systems (payments, lending, marketplaces, fintech, or similar)
- Familiarity with concepts like authorization optimization, loss modeling, cohort/vintage analysis, or unit economics
- Strong product and business intuition—you care about shipping impact, not just analysis
- Comfortable operating cross-functionally and owning ambiguous, high-leverage problem spaces
- Background in fintech, payments, or large tech platforms is a strong plus
What the job involves
- As a Senior Staff Decision Scientist on the Risk & Decision Science team, you’ll own the strategy and optimization of Flex’s payment decisioning stack
- This includes authorization optimization, PSP routing, retries/failover logic, and cost vs. risk tradeoffs across millions of dollars of payment volume
- This is a high-impact, senior individual contributor role where you’ll work at the intersection of payments, product, engineering, finance, and data to improve core platform economics and customer experience
- If you’ve worked on payments platforms, risk systems, credit, or large-scale decisioning at companies like Stripe, PayPal, Square, Adyen, Affirm, or big tech, this role is very much in that vein
- Own and evolve Flex’s payment decisioning and routing strategy across multiple PSPs
- Use data to increase authorization rates while reducing processing costs and losses
- Design and evaluate retry, failover, and fallback strategies to improve reliability and performance
- Analyze large-scale payment and risk data to identify product and platform improvements
- Build models and forecasts to understand the impact of policy and product changes
- Run experiments and measure tradeoffs between growth, risk, cost, and user experience
- Partner closely with Product, Engineering, Finance, and Operations to ship improvements to the payments platform
- Define metrics and dashboards to monitor performance and guide strategy
- Communicate clear, actionable recommendations to leadership and stakeholders
Our take
Many people struggle to pay their rent every month, with a variety of bills hitting their bank accounts simultaneously. Whilst many of these people earn enough money to cover their bills, the inflexible nature of monthly bills can make the all-in-one payment a harder obstacle.
Flex provides a mobile application for the flexible payment of rent, allowing users to pay their landlords through flexible payment plans, reschedule payments when necessary, and protect their funds through Overdraft Protection. The company achieves this by partnering with estate agents and paying their resident's bills upfront, taking on the challenges that landlords would normally have due to late payments.
Flex has experienced extremely rapid growth since its founding which has caused some issues, as it struggled to keep up with the surge in new customers. Having made improvements to its product and scaled its customer service team, it is set to continue providing a service that has come to be highly valued by both tenants and landlords.
Freddie
Company Specialist at Welcome to the Jungle
Insights
10% employee growth in 12 months
Company
Funding (last 2 of 5 rounds)
Feb 2022
$160m
SERIES C
Apr 2021
$46.6m
SERIES B
Total funding: $225.1m
Company benefits
- 100% company-paid medical, dental, and vision
- 401(k) + company stock options
- Unlimited paid time off + company paid holidays
- Parental leave + IVF and adoption support
- Flex Cares Program: Non-profit company match + pet adoption coverage
- Pet Insurance
- Free Flex subscription
Company HQ
Midtown Manhattan, New York, NY
Leadership
Shragie Lichtenstein
(Co-Founder & CEO)Experience working in venture capital investments for Point72 and TVC. Also co-founded Boundless Reality.
YeTong Shao
(Co-Founder)Experience as Data Science Researcher. Also co-founded Boundless Reality.
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