Senior Software Engineer (Go Tooling)

POSITION SUMMARY

EarnIn is seeking a Senior Frameworks Engineer to design, build, and evolve the shared frameworks and libraries that power our microservices and APIs across multiple runtimes, with a primary focus on Golang and secondary support for Kotlin/Spring Boot. As part of the Developer Experience team, you will be a domain expert who strengthens the foundational plumbing of our services—including bootstrappers, observability, authentication, communication protocols, and CI/CD scaffolding. You will deliver impactful solutions that simplify complexity for developers, enabling them to build high-quality, scalable systems more efficiently.

In this role, you’ll collaborate closely with teammates and cross-functional partners, contribute to technical strategy through thoughtful design and implementation, and advocate for frameworks that improve both developer experience and customer outcomes. You will balance short-term deliverables with long-term maintainability, mentor junior engineers, and model mission-driven ownership, creativity, and resilience. This position will ideally be hybrid from our Mexico City office as part of our expanding site, though a remote arrangement is possible. EarnIn provides excellent employee benefits, including healthcare, internet/cell phone reimbursement, a learning and development stipend, and potential opportunities to travel to our Mountain View HQ. Our salary ranges are determined by role, level, and location.

WHAT YOU'LL DO 

• Design, implement, and maintain core frameworks and libraries in Golang that support bootstrapping, shared services, observability hooks, authentication, RPC/REST tooling, and CI/CD templates.
• Partner with the Kotlin framework owner and other engineers to ensure cross-runtime consistency, enabling a unified developer experience across Go, Kotlin, and other supported runtimes.
• Build reusable components for logging, tracing, metrics, configuration management, rate limiting, and service-to-service communication.
• Keep shared frameworks aligned with evolving industry standards (e.g., OpenTelemetry, gRPC/HTTP middleware, Go upgrades, Spring Boot integrations), reducing fragmentation and technical debt.
• Participate in architecture and design reviews, provide well-thought-out recommendations, and advocate for best practices.
• Deliver solutions that balance speed, quality, and scalability, ensuring testing, monitoring, and performance considerations are built into your work.
• Contribute to code reviews and support teammates through documentation, guidance, and collaborative problem-solving.
• Collaborate across platforms, backend, and ML teams to design framework features that improve productivity while meeting customer needs.
• Demonstrate ownership by anticipating near-term challenges, proactively mitigating risks, and following through on commitments with transparency and integrity.

WHAT WE'RE LOOKING FOR 

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).
• 4+ years of software development experience, including contributions in framework, platform, or infrastructure engineering.
• Strong expertise in Golang and experience building frameworks, libraries, or developer tooling.
• Experience with Kotlin/Java (Spring Boot) or other backend runtimes (C#, Python, TypeScript) is a plus.
• Knowledge of service-oriented and event-driven architectures, including gRPC, REST, and messaging/eventing systems.
• Familiarity with observability stacks, OpenTelemetry, and performance tuning.
• Experience with AWS managed services, container orchestration (Kubernetes), and CI/CD pipelines.
• Strong communication skills with the ability to advocate for customers, collaborate effectively with teammates, and approach challenges with candor and compassion

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