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Flex

Flex splits your bills into smaller, stress-free payments throughout the month. Start today with your rent bill!

Staff Software Engineer, Fullstack

Full-stack EngineerSoftware EngineerFull TimeRemoteLeadTeam 201-500Since 2019H1B SponsorCompany SiteLinkedIn

Location

California + 1 moreAll locations: California, New York

Posted

2 days ago

Salary

$200K - $250K / year

Seniority

Lead

Bachelor Degree7 yrs expEnglishAWSDynamo DBGradleJavaJunitReactReact NativeReduxSpringType Script

Job 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.

Job 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

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