Software Engineer II, Frontend, Mobile and Web

<div class="content-intro"><p>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 2026 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?</p></div><h1><span style="font-size: 12pt;"><strong>About the role</strong></span></h1> <p><span style="font-size: 10pt;">Flex is looking for a Software Engineer II that will be responsible for the development of our core user experience across our mobile and web platforms. In this role you will be working closely as part of a team to launch new features across our web and mobile platforms. You’ll be developing, designing, testing, and scaling new product offerings that solve complex problems in a simple way for all of our users. </span></p> <p><span style="font-size: 10pt;">You can expect to be working closely with other cross functional partners across our organization on a daily basis. Our team works in an agile manner, and some of the partners you can expect to work with in this role include designers, product managers, and quality engineers. We expect you to be able to be hands-on and execute on work as both an individual, while also building products that allow for flexibility as we are evolving our product offerings.</span></p> <h1><span style="font-size: 12pt;"><strong>What you’ll do</strong></span></h1> <ul> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Work closely with product, design, and engineering peers to launch new features across our web and mobile platforms</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Design, test, and scale new features to solve complex problems in a simple way for our customers</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Be hands-on and execute work as an individual, while also building products that allow for flexibility as we evolve our product offerings</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">The ideal candidate will be comfortable leading scoping, design, implementation for mobile/web features</span></li> </ul> <h1><span style="font-size: 12pt;"><strong>Key qualifications</strong></span></h1> <ul> <li style="font-size: 10pt;"><span style="font-size: 10pt;">A minimum of 2 years experience in React.js or React Native is required for this position.</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Strong computer science fundamentals </span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">A strong focus on building high quality mobile and web UIs to specifications</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Experience with various architectures and tools within the React Native and React ecosystems (Hooks, Components, Context, Redux).</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Experience delivering products at a large scale without performance bottlenecks (hundreds of thousands to millions of users)</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Write maintainable code that uses industry best practices to improve the entire software development life cycle (unit testing, linting, automation).</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Ability to write well-documented and testable TypeScript code</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Familiarity with REST API’s and tooling across web and mobile ... (truncated, view full listing at source)