Senior Software Engineer, Fullstack - Remote

Overview

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?

In Short

• Join a FinTech company focused on improving the rent payment experience.
• Implement backend systems that support business features.
• Design, develop, test, and scale systems for user and partner experiences.
• Collaborate with product, design, and engineering teams.
• Lead scoping, design, and implementation for APIs.
• Work in an agile environment with frequent iterations.
• Minimum of 4 years of professional software development experience required.
• Experience with Java, React, and TypeScript is essential.
• Ability to work on a globally-distributed team.
• Focus on building robust, fault-tolerant systems.

Requirements

• 4+ years of professional software development experience.
• 3+ years with Java, React or React Native, and TypeScript.
• Experience building high-quality mobile and web UIs.
• Ability to align and set expectations with stakeholders.
• Experience with Service-Oriented Architecture and REST APIs.
• Proficient in Java frameworks and tools.
• Experience with AWS and containerization tools.
• CI/CD systems knowledge is preferred.
• Excellent communication skills.
• Experience with observability and monitoring tools.

Benefits

• 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: Non-profit company match + pet adoption coverage.
• Free Flex subscription.