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Senior Staff Software Engineer

Remote (U.S.)

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?

About the role

Flex is looking for a Senior Staff 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 shared service team, responsible for the core platform that covers our major business functions such as Payment, Ledger, Identity&Auth, Settlement etc.  You’ll be designing, developing, testing, and scaling the platform needed to deliver great user and partner experiences and a reliable end-to-end payment process.

You’ll work closely with your product, design and engineering 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.

Skills that are required

  • Bachelor or above degree in Computer Engineering or a related field
  • Minimum of 8 years experience in software engineering, with at least 3 years of technical leadership experience in a hands-on capacity
  • You have experience with the Java frameworks and tools we use at Flex such as Spring (core/web/boot), Gradle and JUnit
  • You have experience with relational SQL and NoSQL databases, such as MySQL/PostgreSQL/DynamoDB
  • You have experience designing and implementing services in distributed services environment at scale
  • You have experience with observability and monitoring tools such as DataDog for maintaining high availability
  • You write high-quality code that is testable, maintainable, scalable, and secure
  • Ability to work on a globally-distributed team with a high degree of ownership
  • Experience leading the delivery of multiple highly impactful products end to end, on time with a high quality bar
  • Experience working with technical and non-technical stakeholders, successfully aligning and setting expectations on scope and delivery
  • Ability to drive yourself and your team to bring quality and consistency to their code and architecture, without compromising velocity
  • Ability to grow in a fast-paced and dynamic environment that will challenge you to always bring your best
  • Experience in designing and developing solutions that maximize ROI and lead to significant business impact
  • Experience working in FinTech and familiar with major payment rails 
  • Experience working on AWS cloud based applications
The salary compensation range for this role will be commensurate with the candidate's experience and Flex's internal leveling guidelines and benchmarks.
  • For working locations in NY/NJ/CA, the base salary pay range will be $247,000-$266,000
  • For all other states, the base salary pay range will be $220,000-$239,000

#LI-Remote

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

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