Staff Software Engineer, Fullstack

🕒 March 16

🏄 California, New York – Remote

🏄 California – Remote 🗽 New York – Remote

💵 $200k - $250k / year

⏰ Full Time

🔴 Lead

🧑‍💻 Full-stack Engineer

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Flex

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2019

💳 Fintech

🏠 Real Estate

👥 B2C

Fintech • Real Estate • B2C

Flex is a financial technology company that enables renters to split and schedule rent payments, pay move-in costs over time, and build credit through on-time rent reporting. It offers consumer-facing payment products (rent split, pay-over-time, and move-in loans) and partners with property owners and property-management systems to help properties collect on-time rent and retain residents. Flex operates via bank partnerships and regulated lending/servicing subsidiaries to provide loans and payment processing while emphasizing security and regulatory compliance.

📋 Description

• Focus on creating exceptional user and partner experiences that drive engagement and retention. • Partner closely with product managers, designers, and data scientists, data analysts to identify and solve critical user onboarding challenges. • Design, develop, test, and deploy robust APIs, services and data pipelines that enhance user onboarding and overall platform experience. • Implement changes through an agile methodology, prioritizing rapid iteration and continuous improvement. • Utilize data and analytics to measure the impact of your work and identify opportunities for optimization.

🎯 Requirements

• 7+ years of professional software development experience. • 3+ years of hands-on experience with Java. • 3+ years of experience with React or React Native. • 3+ years of experience with TypeScript. • Having experience building high-quality mobile and web UIs to specifications is a must to have. • Proficient 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 architectures and tools in React Native and React ecosystems (Hooks, Components, Context, Redux). • Experience with AWS (EKS, Aurora RDS, Elasticache, DynamoDB) and containerization tools.

🏖️ Benefits

• Competitive medical, dental, and vision available from Day 1 • Company equity • 401(k) plan with company match (our company match kicks off at the beginning of 2026) • Unlimited paid time off + 13 company paid holidays • Parental leave • Flex Cares Program • Free Flex subscription