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?
Flex is looking for a Full Stack Software Engineer to join our core platform team and help build out our core services to enhance and extend our business functions
In this role you will be part of the core platform team, responsible for the user growth initiatives that unblock our next 10x growth journey. You’ll be designing, developing, testing, and scaling our app and platform needed to deliver great user and partner experiences.
You’ll work closely with your product, design and analytics peers to solve our users' most pressing problems around rent payment. You’ll roll out changes to our customers in an agile manner with a delivery cadence that favors small, frequent iterations. The ideal candidate will be comfortable leading scoping, design, prioritization, and implementation for APIs and services they build and can drive their production rollouts to completion with minimum oversight.
QualificationsMinimum Qualifications
- 2+ years of professional software development experience.
- 2+ years of hands-on experience with Java.
- 2+ years of experience with React or React Native.
- 2+ years of experience with TypeScript.
- Having experience building high-quality mobile and web UIs to specifications is a must to have.
- Proficient in Java frameworks and tools used at Flex, including Spring (core/web/boot), Gradle, JUnit, and JVM (memory/performance tuning, GC).
- Experience with Service-Oriented Architecture, REST APIs, Message Queues, and scalable architectures.
- Experience with architectures and tools in React Native and React ecosystems (Hooks, Components, Context, Redux).
- Experience with AWS (EKS, Aurora RDS, Elasticache, DynamoDB) and containerization tools.
Preferred Qualifications
- Proficient in CI/CD systems (preferably GitHub Actions), git, and automation.
- Skilled in observability and monitoring tools, such as DataDog, to ensure high availability.
- Experienced with big data platforms and tooling, including Snowflake.
- Proficient in Infrastructure as Code, using tools like CDK and Terraform.
- Skilled at elevating team standards through best practices, and mentoring junior engineers.
- Excellent written and verbal communicator, with experience in cross-functional collaboration.
For working locations in NY/NJ/CA, the base salary pay range will be $179,000-$194,000
For all other states, the base salary pay range will be $161,000-$175,000
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:
- Competitive pay
- 100% company-paid medical, dental, and vision
- 401(k) + company equity
- Unlimited paid time off with a PTO minimum + 13 company paid holidays
- Parental leave
- Flex Cares Program: Non-profit company match + pet adoption coverage
- Free Flex subscription
For full time non-US employees, we offer
- Competitive Pay
- Company Equity
- Unlimited PTO
What We Do
Flex is an early-stage, remote-first FinTech startup that is bringing flexible payments to recurring bills. Flex is a multi-bill platform. We began by revolutionizing rent — Americans’ largest recurring bill. Flex enables its users to pay rent and bills throughout the month on a schedule that better fits their finances. With Flex, everybody can better manage their bills and budget.
Why Work With Us
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 NYC, but we are remote-friendly with employees located globally (US, Canada, Brazil, and Israel). We value the unique and dynamic perspectives our team brings every day.
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