Senior Software Engineer

2 weeks ago

Sydney, New South Wales, Australia Outsized Full time $200,000 - $250,000 per year

Contract:
6 Months

Location:
Sydney (Hybrid)

Start Date:
ASAP

About the Role

A leading payments platform is seeking a
Senior Software Engineer
to join its
Cards Connect squad
. This role is ideal for a backend engineering specialist with experience delivering secure, scalable, and high-performance payment solutions.

As part of a cross-functional squad, you will contribute to the design and evolution of a
robust issuing and digital payments ecosystem
, working on complex engineering challenges that demand innovation, creativity, and strong system design principles.

Key Responsibilities

  • Collaborate with Product Owners, BAs, QA Engineers, and Software Engineers to design and deliver scalable and performant backend solutions.
  • Lead technical delivery including architecture, development, deployment, and maintenance of backend services.
  • Work primarily across the
    C# / .NET
    stack to build resilient services aligned to the technology roadmap.
  • Contribute to continuous improvement of engineering practices, system design, and performance optimisation.
  • Ensure solutions meet high standards of security, compliance, and operational excellence.
  • Troubleshoot complex issues to maintain platform stability and reliability.
  • Provide technical guidance and mentorship within the squad.

Essential Experience

  • Minimum
    10+ years of software engineering experience
    , with a strong backend engineering focus.
  • Recent hands-on experience (last 3–4 years) with
    C# / .NET (v5.0+)
    .
  • Proven track record designing and delivering scalable, cloud-native systems.
  • Strong understanding of microservices and distributed system architectures.
  • Proficiency in unit testing, TDD, and BDD practices.
  • Experience working in Agile delivery environments.
  • Excellent problem-solving skills, collaborative mindset, and clear communication style.

Desirable Skills

  • Domain knowledge in Issuing / experience working with an Issuer
    (highly desirable)
  • Experience with
    Actor-based systems
    (Microsoft Orleans, Akka, or similar)
  • Payments / financial services industry experience

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