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EarnIn Logo EarnIn · IT - Software Development

Software Engineer (Backend)

Mexico, Mexico City · Job Posted December 08, 2025
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Job Description

We’re looking for a Backend Engineer to join our Growth Engineering team, which builds the systems and experiments that help millions of people discover, onboard, and engage with EarnIn. You’ll work on high-impact product areas across the member journey — from activation to retention — designing scalable backend services that power rapid experimentation, personalization, and data-informed product decisions.

Job Responsibility

  • Design and implement backend features that drive EarnIn’s Growth funnel — from onboarding and cross-sell to retention and engagement
  • Build and maintain scalable, event-driven microservices that enable experimentation, real-time personalization, and data-driven decision-making
  • Collaborate with Product, Data, and Marketing teams to translate growth hypotheses into technical solutions and run experiments that move key metrics
  • Ensure system performance, scalability, and reliability, especially under high throughput and real-time conditions
  • Develop automation and testing frameworks to maintain velocity and confidence in continuous integration and deployment pipelines
  • Debug and resolve production issues, working across multiple service layers to maintain system stability and uptime
  • Proactively identify opportunities to generalize solutions, building reusable infrastructure and APIs that accelerate team development
  • Partner with mobile, web, and analytics teams to ensure cohesive end-to-end experiences across platforms

Requirements

  • 3+ years of backend software engineering experience, ideally in distributed or microservice-based systems
  • Strong fundamentals in service architecture and API design, with experience building reliable, performant systems at scale
  • Proficiency in at least one modern backend language, such as Kotlin, Java, C#, or Python, and openness to learning new technologies as needed
  • Experience with SQL databases (e.g., PostgreSQL, MySQL) and familiarity with NoSQL systems is a plus
  • Familiarity with event-driven patterns (queues, messaging, background jobs) and REST/gRPC services
  • Collaborative mindset, with experience working alongside product, data, and design teams to deliver user-facing impact
  • Strong testing and debugging skills, with experience maintaining high-quality services in production
  • Excellent communication and problem-solving abilities, with a proactive approach to learning and iteration

Nice to have

Experience with experimentation frameworks, growth systems, or AI-powered personalization tools

What we offer

  • healthcare
  • internet and cell phone reimbursement
  • a learning and development stipend
  • potential opportunities to travel to our headquarters in Mountain View
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