Senior Backend Engineer (Golang)

mx51 is a payments-as-a-service solution for banks, non-bank acquirers, and other merchant service providers. We are building a payment platform that allows merchants to accept payments in-store, in-app and online, whilst consolidating all their data on a real-time business management dashboard.

As a Senior Backend Engineer within the mx51 Backend team, you will be instrumental in the delivery of key projects for the business. You will play a vital role in developing our platform utilised by major financial institutions across Australia.

In this role, you will:

• Develop, and maintain high-throughput, fault-tolerant microservices written in Go to support our backend infrastructure


• Create and optimise RESTful and gRPC APIs, ensuring scalability and performance


• Implement robust data models and query optimisations for PostgreSQL databases


• Drive continuous improvement in code quality through code reviews, testing, and refactoring


• Collaborate with DevOps to containerize applications using Docker and deploy to Kubernetes clusters on AWS


• Work cross-functionally with product, design, and other engineering teams to deliver solutions that meet customer needs


• Stay current with emerging technologies and industry best practices, recommending and implementing improvements to our tech stack


• Evaluate and incorporate AI tooling to improve automation, increase quality, and reduce bottlenecks

About You

• Technical Leadership - Provide technical direction and influence product decision through sound architectural judgement  


• Communication - Articulate technical concepts clearly in both written and verbal form when interacting with your team and stakeholders across the business.


• Problem Solving - Approach complex technical challenges with curiosity and a systematic mindset, seeking to understand root causes before implementing solutions


• Expertise - Passion for software engineering craft and in particular back end development. You will  have significantly contributed to the engineering of production-grade microservices.


• Adaptability - Respond quickly to changing business priorities and working conditions.


• Values - Consistently demonstrate mx51 values in all aspects of your work and collaboration.