Senior Backend Engineer (Full Stack Mindset) - Remote

Overview

As one of the first pioneers of earned wage access, our passion at EarnIn is building products that deliver real-time financial flexibility for those with the unique needs of living paycheck to paycheck. Our community members access their earnings as they earn them, with options to spend, save, and grow their money without mandatory fees, interest rates, or credit checks.

We’re fortunate to have an incredibly experienced leadership team, combined with world-class funding partners like A16Z, Matrix Partners, DST, Ribbit Capital, and a very healthy core business with a tremendous runway. We’re growing fast and are excited to continue bringing world-class talent onboard to help shape the next chapter of our growth journey.

In Short

• Design, implement, and evolve Kotlin-based backend services that support key user-facing product features.
• Break down complex product and system requirements into clean, scalable service architectures.
• Build and maintain asynchronous workflows, including job execution, messaging patterns, and queue-based processing.
• Contribute to the design and rollout of robust REST/gRPC APIs and data contracts used across mobile and web clients.
• Collaborate closely with mobile, frontend, product, and design teams to ensure consistency and cohesion across platforms.
• Own the reliability, observability, and performance of the services you build in production environments.
• Write well-tested, maintainable code and participate in continuous integration pipelines and automation frameworks.
• Participate in incident response and root cause analysis to help improve system resilience.
• Provide technical guidance and mentorship to L3 engineers through design reviews, pair programming, and architecture discussions.
• Actively collaborate across domains, including product, data, finance, and analytics, to align services with real-world business needs.

Requirements

• 4+ years of software engineering experience, with a track record of shipping and maintaining backend services, and a bachelor’s, or equivalent industry experience.
• Strong Kotlin experience required, especially in backend systems.
• Proven experience working in microservice-based architectures and event-driven communication models.
• Hands-on experience designing and implementing REST/gRPC APIs and messaging workflows.
• Solid understanding of SQL databases, schema design, and performance optimization.
• Familiarity with distributed systems, including monitoring, alerting, and failure handling.
• Experience working with CI/CD pipelines and production deployment practices.
• Effective communication and collaboration skills across time zones and teams.
• Experience mentoring other engineers and providing technical leadership.
• Exposure to frontend or mobile client integration is a plus.
• Proactive interest in working with AI tools and on AI-driven solutions is a plus.
• Experience or interest in multiple backend technologies and languages is a plus.

Benefits

• Excellent healthcare benefits.
• Internet/cell phone reimbursement.
• Learning and development stipend.
• Potential opportunities to travel to our Mountain View HQ.