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Senior Software Engineer

EarnIn

$186,300 - $227,700
Oct 1, 2025
Los Angeles, CA, US
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EarnIn is looking to solve the business problem of providing real-time financial flexibility for individuals living paycheck to paycheck by building scalable and robust backend systems that support rapid product evolution and high-throughput transaction processing.

Requirements

  • 4+ years of software engineering experience, with a track record of delivering scalable backend solutions.
  • Experience working in microservices architectures, designing and building distributed systems.
  • Proficiency in at least one modern backend programming language, with the ability to adapt to multiple technologies (we work with Java, Kotlin, C-Sharp, and Python).
  • Strong expertise in SQL databases, as well as additional experience in NoSQL systems, is a plus.
  • Experience designing architectures that enable rapid iteration, either from early-stage product development or within Research & Development teams is a plus
  • Hands-on experience with continuous integration and deployment tools, ensuring seamless and efficient development workflows.
  • Experience in functional and integration testing, ensuring backend services maintain high reliability.

Responsibilities

  • Design and implement new features, breaking down complex problems into elegant, scalable, and maintainable solutions.
  • Architect and maintain robust microservices integrations, leveraging REST/gRPC APIs and event-driven messaging patterns (events/queues) to build flexible and extensible systems.
  • Collaborate with Product teams to define technical solutions in ambiguous environments, ensuring that backend architectures support rapid product iteration and expansion.
  • Ensure scalability and performance by developing services designed to handle high-throughput and real-time transaction processing.
  • Proactively identify and mitigate risks to ensure our backend systems remain secure, reliable, and resilient.
  • Mentor and guide engineers, providing technical leadership through design reviews, code reviews, and architectural guidance.
  • Develop test automation to enable continuous integration and deployment, maintaining high development velocity.

Other

  • Experienced, collaborative, and resourceful Senior Backend Engineer
  • Thrive in uncertain environments and excel at defining technical solutions
  • Collaborating closely with Product teams to refine requirements.
  • Experience in fintech or has built 0-to-1 products
  • Excellent written and verbal communication skills, with the ability to collaborate effectively across teams.