Senior Engineering Manager, Flex
Payments
$240-300k
+ Company equity
Flexible rent payment application
Job no longer available
Flexible rent payment application
501-1000 employees
Job no longer available
$240-300k
+ Company equity
501-1000 employees
Company mission
To help people pay for the things that matter most.
Role
Who you are
- 8+ years of backend engineering experience and 3+ years managing engineers
- Experience building or operating payments, fintech, banking system
- Strong understanding of distributed systems reliability and data integrity
- Experience owning production services with strict uptime and correctness requirements
Desirable
- Experience with payment rails (ACH, card networks, RTP, wires, payouts)
- Experience integrating payment processors (Stripe, Checkout, Adyen, bank APIs, etc.)
- Experience in regulated environments (KYC, NACHA, chargebacks, reconciliation)
- Familiarity with financial ledger or accounting correctness principles
- Background scaling high-growth consumer or fintech platforms
What the job involves
- We are hiring a Senior Engineering Manager to lead the Payments platform team, responsible for the systems that charge customers, collect funds, and handle refunds
- This team owns the end-to-end payment lifecycle: authorization, charge, refund, reconciliation, and financial integrity across multiple payment rails and processors
- You will lead a team of backend engineers responsible for building a highly reliable, compliant, and cost-efficient payments platform that supports rapid product expansion while safeguarding customer funds
- This role requires hands-on leadership, you will drive architecture, execution, operational excellence, and team growth while partnering closely with Product, Risk, Finance, Compliance, and external financial partners
- Define and execute the long-term architecture of Flex’s multi-rail payments platform (Card, ACH, RTP, OCT, FedNow, etc)
- Ensure financial correctness across ledgering, settlement, reconciliation, and refunds
- Drive reliability and resilience for mission-critical money movement systems
- Guide design reviews and make high-impact technical decisions
- Lead cross-team initiatives spanning product, risk, and finance workflows
- Own delivery of large, ambiguous projects from concept to production
- Improve system scalability, observability, and incident response practices
- Reduce payment processing costs through routing strategy and platform optimization
- Manage, mentor, and grow a team of backend engineers
- Establish strong ownership culture and operational excellence
- Hire and develop senior engineers and future technical leaders
- Elevate engineering quality, testing discipline, and design rigor
- Ensure high availability and financial accuracy SLAs
- Lead incident response for payment-related issues
- Build guardrails to prevent financial and compliance risk
- Partner with Risk & Compliance teams on regulated workflows
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
- Medical, Dental & Vision: Your healthcare will be available from Day 1— giving you immediate peace of mind — with best in class coverage and options.
- Parental Leave: Step away with paid time off to focus on family and life’s newest chapter.
- NYC HQ: Collaborate in our lively New York headquarters, with new office space on the way!
- 401(k) Retirement Savings: Plan ahead with our 401(k) program to grow your future. And starting early 2026, employees will be eligible for a company match!
- Flex Giving: Flex Giving empowers employees to support local nonprofits advancing housing stability in the communities we call home.
- Employee Assistance Fund: Confidential financial support to teammates facing unexpected hardships or emergencies.
- Hybrid Work Policy: Work flexibly from home, with in-person collaboration and events that matter.
- Unlimited PTO + Holidays: Take the time you need— whether that’s a vacation, recharge, or simply a long weekend
- Free Flex Subscription: As a Flex employee, you'll have full access to our services without charge.
- GrubHub Credit: Enjoy meal credits while in the office, so you’re fueled for the workday ahead.
Company HQ
Midtown Manhattan, New York, NY
Leadership
Shragie Lichtenstein
(Co-Founder & CEO)Prior to co-founding Flex in 2019, Shragie co-founded Boundless Reality. They graduated from Yeshiva University in 2015 with a Bachelor's Degree in Finance.
YeTong Shao
(Co-Founder)Prior to co-founding Flex in 2019, YeTong co-founded Boundless Reality alongside Shragie. They graduated from the University of Chicago with a Bachelor's Degree in Mathematic & Economics.
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