Sr. Software Engineer, SaaS

POSITION SUMMARY

We are looking for an experienced, passionate, and resourceful senior-level engineer with a proven track record to join the EarnIn payroll services team. In this role, you will participate in the design, development, and implementation of both backend services and the frontend experiences that power EarnIn’s new payroll SaaS product. You’ll work across the stack to ensure backend systems and user-facing applications are well-aligned, intuitive, and reliable for payroll customers.

Come make a difference with us and have fun doing it! This position is ideally hybrid from our Mexico City office as part of our expanding site, though remote can be considered. EarnIn offers excellent benefits, including healthcare, internet and cell phone reimbursement, a learning and development stipend, and potential opportunities to travel to our Mountain View, CA headquarters. Our salary ranges are determined by role, level, and location.

WHAT YOU’LL DO

• Design & build key backend components such as payroll and tax processing engines, ledger services, and pay cycle management.
• Develop services and APIs using Go (Golang) that are robust, secure, and optimized for performance and maintainability.
• Partner closely with frontend engineers to design APIs and data models that enable intuitive, performant, and scalable user experiences.
• Contribute to frontend development for the payroll SaaS product, helping build and maintain user-facing features that are reliable, accessible, and easy to use.
• Collaborate closely with product managers, designers, and fellow engineers to deliver high-impact features that meet the needs of payroll customers end to end.
• Design, implement, and maintain scalable and reliable backend microservices for EarnIn’s new payroll SaaS product.
• Investigate and resolve production issues across the stack with a focus on root cause analysis, long-term stability, and continuous improvement.
• Contribute to building a modern, best-in-class payroll platform that handles time-critical financial workflows with precision and reliability.
• Conduct code reviews to ensure code quality, adherence to best practices, maintainability, and alignment with project requirements, while providing constructive feedback to team members across backend and frontend codebases.
• Ensure the delivery of high-quality software features within established timelines.

WHAT WE’RE LOOKING FOR

• 4+ years of development experience in a fast-paced environment.
• Bachelor’s degree in computer science, computer engineering, or a related technical discipline, or equivalent industry experience.
• Proficient in one or more modern programming languages (e.g., Go, Python, C#, or similar) with a solid understanding of software engineering best practices.
• Experience building or contributing to modern frontend applications (e.g., React, Vue, TypeScript, or similar frameworks) and a strong appreciation for user experience and usability.
• Hands-on experience working with relational databases.
• Cloud experience, AWS preferred.
• Experience managing infrastructure and service configurations using Configuration as Code (e.g., Helm, Kustomize, Terraform).
• Deploy and operate backend services in a Kubernetes-based environment, optimizing for resiliency, scalability, and performance.
• Comfort collaborating across the stack, including working closely with design and product to translate requirements into user-facing functionality.
• Excellent written and verbal communication skills.
• Ability to thrive in a fast-paced, dynamic environment with a strong bias toward action and results.

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