Senior Software Engineer

At McMillan Shakespeare, we’re not just modernising systems—we’re redefining how financial services technology delivers value at scale.

We’re looking for a Senior Software Engineer who thrives on ownership, architectural influence, and lifting engineering standards. This is not a “mid-level stepping stone” role—this is for someone who already operates at a senior level, and wants to shape the future of our platforms, not just maintain them.

If you’re passionate about modern architecture, AI-driven solutions, and improving business-as-usual systems, this is a high-impact opportunity to make your mark.

Making a difference isn’t just our purpose, it’s what motivates our people every day. For us, work is not about ticking a box. It’s about knowing that it matters. We make a meaningful difference every day by making it easier for our customers to focus on what matters in their lives.

Here’s how you will make a difference in this role…

This role is about technical leadership and real impact, not just delivery.

Your key responsibilities in this role will include:

• Drive technical quality, scalability, and security across applications and integrations
• Lead and uplift engineering standards through mentoring and code reviews
• Partner with Product, Architecture, and Business stakeholders to shape solutions
• Champion modern engineering practices (CI/CD, observability, automation)
• Contribute to and improve event-driven, cloud-native systems
• Play a key role in production support and incident leadership

To be considered for this role you will have (Non-Negotiable)

We are deliberately targeting experienced engineers. Please only apply if you meet the majority of the below:

Core Engineering Expertise

• Strong hands-on experience with C# and .NET (Core / 5+)
• Deep experience building ASP.NET Core APIs and distributed systems
• Proven experience designing microservices architectures
• Strong knowledge of event-driven systems (essential)
• Advanced experience with NoSQL (Cosmos DB or MongoDB) (essential)

Cloud & Platforms

• Recent experience with Microsoft Azure, including:App Services, Functions, Service Bus, Key Vault, API Management
• Previous exposure to multi-cloud environments (AWS and/or GCP) (required)

Modern & AI-Driven Development

• Hands-on experience delivering Generative AI solutions in productionIncluding RAG pipelines and LLM integrations
• Experience building or working with Agentic AI systems or intelligent automation
• Familiarity with tools like GitHub Copilot, Cursor, or similar AI-assisted development tools

Engineering Mindset

• You take ownership and drive outcomes
• You think beyond code—architecture, scalability, and business impact
• You actively mentor others and raise the bar
• You’re comfortable engaging non-technical stakeholders

What Sets You Apart

• You’ve improved or modernised legacy/BAU systems, not just built new ones
• You bring a continuous improvement mindset and challenge the status quo
• You understand how to balance speed, quality, and risk in financial services

What we can offer you:

· Strong culture and the support of a values-based recognition program

· Novated leasing benefits and discounts

· 12 weeks paid parental leave

· Comprehensive learning and development opportunities to support your career growth

· Sonder digital wellbeing platform, providing personalised support 24/7, plus annual flu vaccinations

· Default Income Protection Insurance reimbursed for members of the MMS Default Super Fund

· Exempt Employee Share Plan

· Volunteer leave & Career break

· MMS Rewards program

Embracing our value of Everyone Matters we hold a collective commitment to foster an environment where all differences are valued and respected.

· We encourage individuals from all backgrounds including Aboriginal and Torres Strait Islander peoples, those caring for someone or living with a disability, LGBTQIA+ and culturally diverse applicants to apply.

· We value the skills and attributes veterans can bring to our organisation.

· We embrace hybrid working and welcome conversations about flexibility.

Please note all successful candidates will undergo background checks (including criminal history and ASIC checks) and an NDIS Workers Screening Check if appropriate. All information provided will be treated confidentially.

We acknowledge Aboriginal and Torres Strait Islander people as the Traditional Custodians of the lands where we live, learn and work.

If you identify as a person living with disability and require adjustments to our recruitment process, please contact us at