Senior Backend Engineer

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 Engineer within the mx51 Backend team, you will be instrumental in delivering key projects for the business, playing a vital role in developing our platform, which is used by businesses to take payments across Australia.

In this role, you will:

• Build and maintain high-throughput, fault-tolerant microservices in Go that power our backend.
• Design technical solutions to meet our customer needs.
• Shape data models and optimise queries for our PostgreSQL databases.
• Champion code quality through code reviews, testing, and refactoring.
• Work closely with product, design, and other engineering teams to deliver solutions our customers love.
• Keep an eye on emerging tech and best practices, and bring good ideas back to the team.
• Champion AI tooling and automation to improve quality and remove bottlenecks.

About You

• You're eager to learn, happy to share what you know, and open-minded when facing challenges.
• You enjoy software engineering, especially back-end development.
• You have good experience building production-grade microservices.
• You embrace change and help bring your team along positively.
• You care as much about the product and the user as you do the code.
• You're curious about using AI to work smarter.
• You strive to uphold the mx51 values.

What we offer

• Work from overseas up to 4 weeks per year
• Annual team offsite
• Social events run by our social committee
• Swap a public holiday and take an alternative day off
• Paid leave for volunteering
• Employee Share Option Plan (subject to invitation)
• Paid parental leave for primary and secondary carers
• Novated lease and salary sacrifice options