Flex
Overview
Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s 2025 and paying rent on time is expensive, inflexible, and difficult. Flex enables 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 (Fullstack) who will be responsible for implementing the various backend and frontend systems that support all business features. You will be part of the product engineering 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. A minimum of 4+ years of experience with Java and 3+ years with React/Typescript is required for this position. Responsibilities
Implement backend and frontend systems that support all business features. Design, develop, test, and scale services and integrations powering products (Payment, Billing, Identity, partner integration, etc.). Collaborate with product, design, and engineering peers to solve user problems around rent payment. Roll out changes to customers in an agile manner with small, frequent iterations. Lead scoping, design and implementation for APIs and drive production rollouts with minimal oversight. Minimum Qualifications
6+ years of professional software development experience. 4+ years of hands-on experience with Java. 3+ years of experience with React or React Native. 3+ years of experience with TypeScript. Experience building high-quality mobile and web UIs to specifications is a must to have. Ability to work on a globally-distributed team with a high degree of ownership. Experience working with technical and non-technical stakeholders, aligning and setting expectations on scope and delivery. Ability to grow in a fast-paced and dynamic environment that challenges you to bring your best. Experience building robust, fault-tolerant systems with multiple external dependencies. Proficient in Java frameworks and tools used at Flex, including Spring (core/web/boot), Gradle, JUnit, and JVM concepts (memory/performance tuning, GC). Experience with Service-Oriented Architecture, REST APIs, Message Queues, and scalable architectures. Experience with 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. Experience with big data platforms and tooling, including Snowflake. Proficient in Infrastructure as Code, using tools like CDK and Terraform. Mentors junior engineers and elevates team standards through best practices. Excellent written and verbal communicator, with experience in cross-functional collaboration. 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 $197,000-$213,000 For all other states, the base salary pay range will be $177,000-$192,000 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 + 13 company paid holidays Parental leave Flex Cares Program Free Flex subscription For full time non-US employees, we offer Competitive Pay Company Equity Unlimited PTO We are an equal opportunity employer.
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Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s 2025 and paying rent on time is expensive, inflexible, and difficult. Flex enables 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 (Fullstack) who will be responsible for implementing the various backend and frontend systems that support all business features. You will be part of the product engineering 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. A minimum of 4+ years of experience with Java and 3+ years with React/Typescript is required for this position. Responsibilities
Implement backend and frontend systems that support all business features. Design, develop, test, and scale services and integrations powering products (Payment, Billing, Identity, partner integration, etc.). Collaborate with product, design, and engineering peers to solve user problems around rent payment. Roll out changes to customers in an agile manner with small, frequent iterations. Lead scoping, design and implementation for APIs and drive production rollouts with minimal oversight. Minimum Qualifications
6+ years of professional software development experience. 4+ years of hands-on experience with Java. 3+ years of experience with React or React Native. 3+ years of experience with TypeScript. Experience building high-quality mobile and web UIs to specifications is a must to have. Ability to work on a globally-distributed team with a high degree of ownership. Experience working with technical and non-technical stakeholders, aligning and setting expectations on scope and delivery. Ability to grow in a fast-paced and dynamic environment that challenges you to bring your best. Experience building robust, fault-tolerant systems with multiple external dependencies. Proficient in Java frameworks and tools used at Flex, including Spring (core/web/boot), Gradle, JUnit, and JVM concepts (memory/performance tuning, GC). Experience with Service-Oriented Architecture, REST APIs, Message Queues, and scalable architectures. Experience with 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. Experience with big data platforms and tooling, including Snowflake. Proficient in Infrastructure as Code, using tools like CDK and Terraform. Mentors junior engineers and elevates team standards through best practices. Excellent written and verbal communicator, with experience in cross-functional collaboration. 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 $197,000-$213,000 For all other states, the base salary pay range will be $177,000-$192,000 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 + 13 company paid holidays Parental leave Flex Cares Program Free Flex subscription For full time non-US employees, we offer Competitive Pay Company Equity Unlimited PTO We are an equal opportunity employer.
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