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 job Flex is looking for a Software Engineer who will be responsible for implementing the various backend systems that support all business features.In this role, you will be part of the backend engineer team, responsible for the services and integrations that power our products, such as Payment, Billing, Identity, partner integration, etc. You'll be designing, developing, testing, and scaling systems needed to deliver great user and partner experiences.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 and implementation for APIs they build and can drive their production rollouts to completion with minimum oversight. Minimum Qualifications Minimum of 6 years experience in software engineeringMinimum of 4 years experience with JavaAbility to work on a globally-distributed team with a high degree of ownershipExperience working with technical and non-technical stakeholders, successfully aligning and setting expectations on scope and deliveryAbility to grow in a fast-paced and dynamic environment that will challenge you to always bring your bestExperience building robust, fault-tolerant systems with multiple external dependenciesExperience designing, building, and maintaining data pipelinesProficient 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 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.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 pay100% company-paid medical, dental, and vision401(k) + company equityUnlimited paid time off with a PTO minimum + 13 company paid holidaysParental leaveFlex Cares Program: Non-profit company match + pet adoption coverageFree Flex subscriptionFor full time non-US employees, we offer:Competitive PayCompany EquityUnlimited PTO Apply for this job indicates a required fieldFirst Name Last Name Email PhoneResume/CVLinkedIn Profile WebsiteAre you authorized to work in the United States? Select Will you now, or in the future, require sponsorship for employment visa status (e.g. H-1B visa status)? Select Does your salary fall within our estimated range for this role? If not, please specify your salary request. Select