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 2025 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?

As we continue to grow our talented team, we remain committed to radical transparency, integrity, and individual growth. We believe that your unique background and experience adds tremendous value to the organization and will empower you to take absolute ownership of business challenges and the execution of solutions.

What we need:

Flex is looking for a backend engineer to join our core platform team. We want engineers with ideas (because they’ll definitely be heard on our small and tight-knit team) and ambition! Successful devs will feel comfortable in a startup environment and will be happy to work in a remote-first team with a lot of independence.

What You'll Do

Design, implement and maintain our Finance service and internal tooling, including financial reporting, reconciliation/audit process.
Design and develop new APIs and functionalities to support large money movements across our banking partners via different payment rails, such ACH.
Scale out core platform to support business growth while maintaining performance and reliability
Continuously improving our daily operations with automation, tooling, design evolution, observability etc.
Work closely with product, analytics, finance and engineering peers to launch new financial features into our platform

What We’re Looking For:

6+ years of experience in software development or a related field
Experience in technical leadership, guiding engineering teams through complex projects
Experience with Java, Python, Golang, or TypeScript/Node.js.
Strong experience with relational SQL and NoSQL databases, such as MySQL/PostgreSQL/DynamoDB
Experience in designing and developing the fault-tolerant and scalable distributed systems
Experience with AWS cloud services: ESC/EKS, Lambda, API Gateway, VPN, RDS etc
Infrastructure as code(AWS CLI, AWS CDK/Terraform)
Strong communication skills with the ability to understand and explain technical issues to a non-technical audience
Follow engineering best practices as well as propose new ones
Experience with finance reporting and reconciliation
Deep experience with writing complex query and data mining

Life at Flex:

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.

We offer many employee benefits. For full time, U.S. based employees we offer: